Amber, Industrial communication and control systems

Remote Monitoring & Control Systems

Menu navigation menu

  1. ML-215
  2. ML-315
  3. ML-2013
  4. WDL-x14 - Borehole Logger
  5. Low Power DTU
  6. Product Comparison
  7. Accessories
  8. Data Logger Power Consumption Calculator
  9. Remote Solar Powered Weather Station
  10. Logger Software
 

The ML-215 with rugged IP67/68 outdoor enclosure is a small, ultra low power, cost effective data logger with built-in QUAD-band GPRS-modem.

The data logger can acquire physical signals by 2 current loop inputs, 2 voltage inputs, 1 resistance input and 3 digital inputs. The data logger is provided with one serial port to capture measurements from ASCII, MODBUS/RTU, NMEA or SDI-12 compatible sensors. 

The ML-315  data logger is similar to the ML-215, but with a built-in dual band 3G-modem with GPRS fall-back. The ML-315 is available in several editions with an integrated tiny solar panel to power the logger

The ML-2013 data logger is similar to the ML-215, but provided with two additional hires voltage inputs to connect a/o loadcells and pyranometers directly to the logger. The ML-2013 is available in several editions with an integrated tiny solar panel to power the logger.

Low power remote Data Terminal Unit, forming a wireless (GPRS/UMTS) transparent communication channel between an RS-232 device, RS-485  network or SDI-12 bus and host software (TCP-server).

The data loggers support MQTT, FTP. email , TCP and HTTP (POST & GET) to transfer logged data.

 

ML-215

The ML–215 data logger is a small, ultra low power, cost effective data logger with built–in QUAD–band GPRS modem. This small data logger, is further provided with an internal temperature sensor, 2 GB micro SD card and an 2FF SIM card slot. The logger can be powered by an internal 3.6 Volt Lithium battery that will last for years when the logger is configured in a lowpower mode. It is also possible to power the data logger using an optional integrated 3xAA NiMH PV–panel or 8..30V external DC source.

The data logger can acquire physical signals by 2 current loop inputs, 2 voltage inputs, 1 potentiometer input and 3 digital inputs. The data logger is provided with one serial port to capture measurements from ASCII, MODBUS/RTU, NMEA or SDI–12 compatible sensors. External sensors can be powered by the data logger itself, to prevent them to consume power while the data logger is a sleep.

Up to 8 mathematical channels are available to calculate meaningful engineering values derived from sensed values (e.g. a polynomial to calculate a flow from a stream level).

Logged data can be pushed to a central host by MQTT,TCP, FTP, SMTP(e–mail)  at configurable intervals.

The ML–215 is available in several editions and as ML–315 (3G) with 3G instead of GPRS MODEM.

 When equipped with the integrated solar panel a complete self providing remote monitoring station can be arranged, all you need is a logger and applicable sensor(s). This self providing 2G logger is costs saving, because you don’t need: a) solar panels,  b) big batteries, c) cellular modem and d) encapsulating cabinet.

 

ML–215DS-LI, ML–215AD-LI,  ML–215ADS-LI  A D–Size 3.6V Lithium battery powerd ML–215 with blind cover (Using a SAFT–LSH20 battery is recommended)

 

 

ML–215DS-PV, ML–215AD-PV,  ML–215ADS-PV  A ML–215 with cover with integrated 1Wp tiny solar panel charging 3x AA 2100mAh NiMH batteries (Using LSD NiMH batteries like GP Recyko+ is recommended) 

 

ML–215DS-DC, ML–215AD-DC,  ML–215ADS-DC   An externally 8..30V DC powered ML–215 with blind cover and charging circuit for 3x AA NiMH (backup) batteries. This edition is very suitable to connect to a non continues external DC source

 

  

ML–215–TFT A ML–215 with TFT screen

 

Features 

Data logging

1 second to 1 day intervals

regular, alarm and independent intervals 

daily operation time bracket (e.g. 07:00AM to 20:00PM or 21:00PM – 06:00AM)

 

5x analog inputs

2x current loop inputs (0/4..20mA, 12bit resolution)

2x voltage inputs (0..10V, 12bit resolution)

1x potentionmeter input (max. 10M, 12bit resolution) a/o to connect a wind direction sensor

3x digital inputs (status, event or puls counter) a/o to connect a flow meter, rain gauge or reed relay based wind speed sensor

1x digital open collector alarm output to switch on a relay in case a parameter value is outside its limits (e.g. a high water level)

 

Internal sensors (a/o battery, processor temperature, signal strength)

8x calculation channels, to derive engineering values from sensed values using mathematical operators and functions (a/o cos, sin, atan2, ln, sqrt)

1x Serial port for connecting external sensors (RS–232, RS–485 or SDI–12)

Serial port drivers

ASCII: Sensors autonomously outputting readable lines of numeric values

MODBUS/RTU: Read–out value registers from MODBUS/RTU slave devices

NMEA–0183: GGA (GPS) , DBT (Depth), HDG(Heading) en MWV (Wind)

SDI–12: Read–out of up to 16 devices with up to 20 parameters per device using aC!, aM!, aCx! or aMx! commands

SBD: To ouput data by Iridium satellite modems (960x)

Optional JPEG camera solar–powered–remote–JPEG–camera–CAM–D13M or remote–JPG–camera–CAM–S03M

Optional GPS receiver datalogger–GPS–E3329–receiver

Built–in QUAD–band GPRS modem

2FF (Class B) SIM–CARD slot

2GB SD–CARD

 

100mA@3.6V average operating 1) current during a duty cycle of less than 1 sec 2) per log interval. 

250mA@3.6V average operating current during 20..60 sec. 3G data transfer  

100uA@3.6V sleep current

12V@100mA switchable power outlet to power external sensors

Power supply

3.6V DC input for internal Lithium battery 3)

Optional 3xAA NiMH solar charger integrated in cover

Optional 8..30V DC–Adapter integrated in cover

 

Data push

1 minute to 1 day intervals

regular and alarm intervals (direct push on alarm raise or fall)

daily operation time bracket (e.g. 07:00AM to 20:00PM or 21:00PM – 06:00AM)

native, JSON or CSV log files by HTTP(SSL/TLS), FTP(TLS Explicit), e-Mail(SMTP), secure TCP(AES-128) or MQTT

JPG pictures by HTTP(SSL/TLS), FTP(TLS Explicit), e-Mail(SMTP), secure TCP(AES-128) or MQTT

SBD messages by Iridium satellite modems (960x)

Alerts by SMS, e-Mail or MQTT

Configuration and FW upgrade by:  › Terminal interface: USB (local) or TCP (remote)  Over-the-air file transfer: TCP, HTTP or MQTT

Web–browser (remote, in combination with the yDocInsights webserver)

 

Rugged and waterproof (130x120x75mm)

IP68 enclosure (LI & DC models) 4)

IP67 enclosure (PV  model)

Optional pole mounting bracket

Integrated GSM antenna, external GSM antenna optional

Wide temperature operating range –30°C +75°C

 

1) 100mA if no external sensors to be powered.

2) 1 sec. if external sensors are responsive and don’t require time to warm up

3) Lithium batteries not included

4) IP68 testing carried out at a depth of 2m for 2 hours

Use our online Data logger power consumption calculator to estimate the battery life of your application or to determine settings fitting local solar power yield.

 

Product sheets and additional files

view all files »

ML-215ML-215 Datasheet

 

ML-315

The ML–315 data logger is a small, ultra–low power, cost effective data logger with built–in 3G–modem available for the various regions. This small data logger, is further provided with an internal temperature sensor, 2 GB micro SD card and an 2FF SIM card slot. The logger can be powered by an internal 3.6 Volt Lithium battery that will last for years when the logger is configured in a low power mode. It is also possible to power the data logger using an optional integrated 3xAA NiMH PV–panel or 8..30V external DC source.

The data logger can acquire physical signals by 2 current loop inputs, 2 voltage inputs, 1 potentiometer input and 3 digital inputs. The data logger is provided with one serial port to capture measurements from ASCII, MODBUS/RTU, NMEA or SDI–12 compatible sensors.

 External sensors can be powered by the data logger itself, to prevent them to consume power while the data logger is a sleep.

 Up to 8 mathematical channels are available to calculate meaningful engineering values derived from sensor input values (e.g. a polynomial to calculate a flow from a stream level).

Logged data can be pushed to a central host by MQTT, TCP, FTP, SMTP(e–mail)  at configurable intervals.

The ML–315 is available in several editions and as ML–215 (2G) with GPRS instead of 3G MODEM.

 When equipped with the integrated solar panel a complete self providing remote monitoring station can be arranged, all you need is a logger and applicable sensor(s). This self providing 3G logger is costs saving, because you don’t need: a) solar panels,  b) big batteries, c) cellular modem and d) encapsulating cabinet

 

ML–315DS-LI, ML–315AD-LI,  ML–315ADS-LI  A D–Size 3.6V Lithium battery powerd ML–315 with blind cover (Using a SAFT–LSH20 battery is recommended)

 

 

ML–315DS-PV, ML–315AD-PV,  ML–315ADS-PV  A ML–315 with cover with integrated 1Wp tiny solar panel charging 3x AA 2100mAh NiMH batteries (Using LSD NiMH batteries like GP Recyko+ is recommended) 

 

ML–315DS-DC, ML–315AD-DC,  ML–315ADS-DC   An externally 8..30V DC powered ML–315 with blind cover and charging circuit for 3x AA NiMH (backup) batteries. This edition is very suitable to connect to a non continues external DC source

 

  

ML–315–TFT A ML–315 with TFT screen

 

Features

Data logging

1 second to 1 day intervals

regular, alarm and independent intervals 

daily operation time bracket (e.g. 07:00AM to 20:00PM or 21:00PM – 06:00AM)

 

5x analog inputs

2x current loop inputs (0/4..20mA, 12bit resolution)

2x voltage inputs (0..10V, 12bit resolution)

1x potentiometer input (max. 10M, 12bit resolution) a/o to connect a wind direction sensor

3x digital inputs (status, event or pulse counter) a/o to connect a flow meter, rain gauge or reed relay based wind speed sensor

1x digital open collector alarm output to switch on a relay in case a parameter value is outside its limits (e.g. a high water level)

 

Internal sensors (a/o battery, processor temperature, signal strength)

8x calculation channels, to derive engineering values from sensed values using mathematical operators and functions (a/o cos, sin, atan2, ln, sqrt)

1x Serial port for connecting external sensors (RS–232, RS–485 or SDI–12)

Serial port drivers

ASCII: Sensors autonomously outputting readable lines of numeric values

MODBUS/RTU: Read–out value registers from MODBUS/RTU slave devices

NMEA–0183: GGA (GPS) , DBT (Depth), HDG(Heading) en MWV (Wind)

SDI–12: Read–out of up to 16 devices with up to 20 parameters per device using aC!, aM!, aCx! or aMx! commands

SBD: To ouput data by Iridium satellite modems (960x)

Optional JPEG camera CAM–D1.3M or low–power–remote–JPG–camera–CAM–S03M CAM–x0.3M

Optional GPS receiver  GPS-E3229

Built–in 3G–MODEM with GPRS fallback.

2FF (Class B) SIM–CARD slot

2GB SD–CARD

100mA@3.6V average operating1) current during a duty cycle of less than 1 sec 2) per log interval. 

250mA@3.6V average operating current during 20..60 sec. 3G data transfer  

100uA@3.6V sleep current

12V@100mA switchable power outlet to power external sensors

Power supply

 

3.6V DC input for internal Lithium battery 3)

Optional 3xAA NiMH solar charger integrated in cover

Optional 8..30V DC–Adapter integrated in cover

 

 

Data push

1 minute to 1 day intervals

regular and alarm intervals (direct push on alarm raise or fall)

daily operation time bracket (e.g. 07:00AM to 20:00PM or 21:00PM – 06:00AM)

native, JSON or CSV log files by HTTP(SSL/TLS), FTP(TLS Explicit), e-Mail(SMTP), secure TCP(AES-128) or MQTT

JPG pictures by HTTP(SSL/TLS), FTP(TLS Explicit), e-Mail(SMTP), secure TCP(AES-128) or MQTT

SBD messages by Iridium satellite modems (960x)

Alerts by SMS, e-Mail or MQTT

Configuration and FW upgrade by: Terminal interface: USB (local) or TCP (remote)Over-the-air file transfer: TCP, HTTP or MQTT

 Web–browser (remote, in combination with the yDocInsights webserver)

 

Rugged and waterproof (130x120x75mm)

IP68 enclosure (LI & DC models) 4)

IP67 enclosure (PV  model)

Optional pole mounting bracket

Integrated GSM antenna, external GSM antenna optional

Wide temperature operating range –30°C +75°C

1) 100mA if no external sensors need to be powered.

2) 1 sec. if external sensors are responsive and don’t require time to warm up

3) Lithium batteries not included.

4) IP68 testing carried out at a depth of 2m for 2 hours

Use our online Data logger power consumption calculator to estimate the battery life of your application or to determine settings fitting local solar power yield.

 

Product sheets and additional files

view all files »

ML-315ML-315 Datalogger

 

ML-2013

The ML–2013 datalogger is a small, ultra low power, high–end datalogger with built–in QUAD–band GPRS–modem. This small datalogger, is further provided with an internal temperature sensor, 2 GB micro SD card and an 2FF SIM card slot. The logger can be powered by an internal 3.6 Volt Lithium battery that will last for years when the logger is configured in a low–power mode. It is also possible to power the datalogger using an optional integrated 3xAA NiMH solar panel.

The datalogger can acquire physical signals by 4 current loop inputs, 4 digital inputs and 2 hires amplified differential voltage inputs, which can be used to connect pyranometers or in combination with a stable excitation voltage to connect “Wheatstone resistive bridge sensors” like loadcells. The datalogger is provided with generic serial port drivers to capture measurements from ASCII, MODBUS/RTU, NMEA or SDI–12 transponders, custom drivers can be developed on request. External sensors/transponders can be powered by the datalogger itself, to prevent them to consume power while the datalogger is a sleep. The excitation voltage is switched off during sleep as well.

Up to 8 mathematical channels are available to calculate meaningful engineering values derived from sensed values (e.g. a polynomial to calculate a flow from a stream level).

Logged data can be pushed to a central host by TCP, FTP or SMTP(e–mail) at configurable intervals.

The ML–2013 is available in several  editions. When equipped with the integrated solar panel a complete self providing remote monitoring station can be arranged, all you need is a logger and applicable sensor(s). This self providing GPRS logger is costs saving, because you don’t need: a) solar panels,  b) big batteries, c) signal amplifiers, d) cellular modem and e) encapsulating cabinet.

 

 

ML–2013-LI  A D–Size 3.6V Lithium battery powerd ML–2013 with blind cover (Using a SAFT–LSH20 battery is recommended)

 

 

ML–2013–PV An ML–2013 with cover with integrated 1Wp tiny solar panel charging 3x AA 2100mAh NiMH batteries (Using LSD NiMH batteries like GP Recyko+ is recommended) 

 

 

ML–2013–DC  An externally 8..30V DC powered ML–2013 with blind cover and charging circuit for 3x AA NiMH (backup) batteries. This edition is very suitable to connect to a non continues external DC source

 

 

 

ML–2013–TFT A ML–2013 with TFT screen

 

Features

Data logging

1 second to 1 day intervals

regular, alarm and independent intervals 

daily operation time bracket (e.g. 07:00AM to 20:00PM or 21:00PM – 06:00AM)

4x analog inputs (0/4..20mA 12bit resolution, accuracy <0.1%FS)

1x differential input (±250/500/1000/2000mV, 16bit resolution) a/o to connect pyranometers

1x differential input (±10/20/40/80mV, 16bit resolution) a/o to connect load cells

8x calculation channels, to derive engineering values from sensed values using mathematical operators and functions (a/o cos, sin, atan2, ln, sqrt)

4x digital inputs or pulse counters

3x status or counter (pulse) a/o to connect a rain gauge

 1x counter (waveform) to connect a flow meter

 

2x serial ports for external serial sensors/probes

 

1x RS–232 or RS–485 (ASCII, MODBUS/RTU, NMEA–183 or custom serial protocols)

 1x RS–232 or SDI–12 (ASCII, MODBUS/RTU, SDI–12, NMEA–183 or custom serial protocols)

Internal sensors (a/o battery, processor temperature, signal strength)

1x digital 5V alarm output to switch on a relay in case a parameter value is outside its limits (e.g. a high water level)

Optional JPG camera CAM–D1.3M or CAM–S0.3M

Optional GPS receiver GPS–E3329

QUAD–band built–in GPRS–MODEM (2G)

2FF (Class B) SIM–CARD slot

GPRSB SD–CARD

100mA@3.6V average operating 1) current during a duty cycle of less than 1 sec 2) per log interval. 

250mA@3.6V average operating current during 25..60 sec. GPRS data transfer  

50uA@3.6V sleep current

12V@100mA switchable power outlet to power external sensors

5V@80mA stable excitation voltage suitable for connecting Wheatstone resistive bridge sensors

Power supply

 

3.6V DC input for internal Lithium battery  3)

 Optional 3xAA NiMH solar charger integrated in cover

Optional 8..30V DC–Adapter integrated in cover

Data push

1 minute to 1 day intervals

regular and alarm intervals (direct push on alarm raise or fall)

 daily operation time bracket (e.g. 07:00AM to 20:00PM or 21:00PM – 06:00AM)

Native log files by TCP, FTP and e–Mail(SMTP)

 JPG pictures by TCP, FTP and e–Mail(SMTP)

CSV log files by FTP and e–Mail(SMTP)

Alerts by SMS

Configuration by:

USB (local)

 TCP (remote, in cooperation with the central data collector)

Web–browser (remote, in combination with the yDocInsights webserver)

 

 

Rugged and waterproof (130x120x75mm)

IP68 enclosure (LI & DC models) 4)

IP67 enclosure (PV  model)

Optional pole mounting bracket

Integrated GSM antenna, external GSM antenna optional

Wide temperature operating range –30°C +75°C

1) 100mA if no external sensors need to be powered.

2) 1 sec. if external sensors are responsive and don’t require time to warm up

3) Lithium batteries not included.

4) IP68 testing carried out at a depth of 2m for 2 hours

Use our online Data logger power consumption calculator to estimate the battery life of your application or to determine settings fitting local solar power yield.

 

Product sheets and additional files

view all files »

ML-2013ML-2013 Datalogger

 

WDL-x14 - Borehole Logger

Features

  • 2G/3G Cellular Data Logger
  • 4GB Data Storage
  • Battery Powered
  • 12V@100mA Sensor Excitation
  • Analog  & Digital Inputs
  • Barometric Sensor
  • Derived Inputs
  • RS232, R485 & SDI-12
  • ASCII, MODBUS  & NMEA
  • MQTT,TCP, FTP, HTTP, e-Mail
  • CSV, TXT, JSON Files
  • Alarm  Output & SMS
  • Vented IP68 Enclosure
  • Fits a 2” borehole
  • 7 pole Hirschmann connector
  • Remote configuration

 

The WDL-x14 is a small, battery powered, cost effective data logger with built-in cellular modem available for the EMEA, APAC and NA regions. The IP68 rated well data logger enclosure is slim enough to fit a 2" borehole and is designed to fit a www.prohydroinc.com lockable well cap. This well data logger, is further provided with a 4GB micro SD-card and an 2FF SIM-card slot. The borehole logger is powered by an internal 3.6 Volt Lithium battery (SAFT LSH20-CNR or equivalent only) that will last for years when the data logger is configured in a low power mode. The battery can be replaced by detaching the top cap, no need to remove the well data logger and sensor from the borehole. 

External sensors can be powered by the data logger itself, to prevent them to consume power while the data logger is a sleep. The data logger is provided with an IP68 rated venting plug, integrated temperature and barometric sensor that can be used for compensating the readings of low cost absolute pressure level sensors. Make sure that the well cap and borehole is vented as well. 

 

Logged data can be pushed to a central host by MQTT, HTTP, FTP, e-mail or TCP at configurable intervals. 

 

The WDL-x14 is available with 3 different cellular modems:

 

  • WDL-214: GPRS.
  • WDL-314: 3G Europe, M-East, Africa and Asia-Pacific.
  • WDL-N314: 3G North America.

 

The WDL-x14 is available in 2 editions:

 

  • WDL-x14AD-LI: Can acquire physical signals by 2 current loop, 2 voltage inputs and 1 digital input.
  • WDL-x14DS-LI: Has 1 digital input and is provided with one serial port to capture measurements from ASCII, MODBUS/RTU or SDI-12 compatible sensors.

 

Data Logging

  • 1 second to 1 day intervals.
  • Regular, alarm and independent intervals.
  • Daily operation time bracket (e.g. 07:00AM to 20:00PM or 21:00PM - 06:00AM) 
  • 4GB micro SD-Card for data and picture storage.

Data push

  • 1 minute to 1 day intervals.
  • Regular and alarm intervals.
  • Direct push on alarm raise and fall.
  • Daily operation time bracket (e.g. 07:00AM to 20:00PM) 
  • native, JSON or CSV log files by HTTP(SSL/TLS), FTP(TLS Explicit), e-Mail(SMTP), secure TCP(AES-128) or MQTT 

Alarming

  • Alerts by SMS, e-Mail or MQTT
  • Open collector output (max. 100mA sink current)

Internal Sensors

  • Barometric sensor (10. . 2000mBar)
  • Battery (voltage and rest capacity)
  • Processor & casing temperature
  • GSM signal strength

Analog Inputs (12bit resolution & <0.1% FS accurracy)

  • 2x current loop inputs (0/4..20mA, 150 Ohm impedance ) 
  • 2x voltage inputs (0..10V) 

Digital Input (0..5V)

  • 1x state, pulse or counter (max. 10kHz) 

Derived Inputs (8x calculation channels, to derive engineering values from sensed values using mathematical operators and       functions (a/o cos, sin, atan2, ln, sqrt).

Serial Input (1x RS-232, RS-485 or SDI-12)

  • SDI-12 (up to 15 devices, max 20 channels per device)
  • MODBUS/RTU (read registers from up to 15 slaves)
  • ASCII (sensors autonomously outputting readable lines of numeric values)

Built-in cellular modem (3 different models)

  • WDL-214: 2G (QUAD-band GPRS)
  • WDL-314: 3G (900/2100Mhz UMTS/HSPA & GPRS  fallback)
  • WDL-N314: 3G (850/1900Mhz UMTS/HSPA & GPRS fallback)
  • 2FF (Class B) SIM-CARD slot.
  • Integrated GSM antenna, external GSM antenna optional.

Configuration by: 

  • USB (local)
  • MQTT
  • TCP (remote, in cooperation with the central data collector) 
  • Web-browser (remote, in combination with the yDocInsights webserver)

Power consumption

  • 100mA@3.6V average operating1) current during a duty cycle of less than 1 sec2)  per log interval.
  • 250mA@3.6V average operating current during 20 to 60  seconds cellular communicaton.
  • 100uA@3.6V sleep current.
  • 12V@100mA excitation to power external sensors.

Power supply

  • 3.6V D-Size SAFT-LSH20-CNR Lithium battery 3)

Enclosure

  • Rugged polycarbonate enclosure.
  • IP68 (tested immersion: 2 meters for 30 minutes)
  • NBR SHA70 O-ring sealings.
  • M12 venting plug for barometric  sensor
  • 7 pole Hirschmann connector (male and female parts)
  • 40mm bottom cap and tube diameter.
  • 59.6mm top cap and flange diameter.
  • 6mm top cap height.
  • 8mm flange height.
  • 350mm total length.
  • 250g total weight, excluding battery.
  • Wide temperature operating range –30°C  to +75°C

 

 

Stock Keeping Unit Table

SKU format:

WDL-x14y-z (x=Modem, y=Edition, z=Power Supply)

Modem (x)

Description

WDL-214y-z

Data logger with built in 2G modem (Quad band GPRS)

WDL-314y-z

Data logger with built in 3G modem (900/2100MHz  UMTS/HSPA,  EMEA/APAC & GPRS fallback)

WDL-N314y-z

Data logger with built in 3G modem (850/1900Mhz UMTS/HSPA, North America & GPRS fallback)

Edition (y)

Description

WDL-x14AD-z

With 4 analog  & 1 digital inputs (no serial port).

WDL-x14DS-z

With 1 digital input & 1 RS-232/RS485/SDI-12 port (no analog inputs).

Power Supply (z)

Description

WDL-x14y-LI

Powered from a 3.6V DC SAFT LSH20-CNR or equivalent D-size lithium battery.

Example:

WDL-314AD-LI is a borehole data logger with a built in 900/2100MHz 3G modem, 4 analog inputs  & 1 digital input.

 

Remark:

1) The data logger will be supplied with a 7-pole Hirschmann female connector and a matching 7-pole male connector to be soldered to the wires of your sensor cable.

2) Due to space limitations we don’t use brass inserts and all inner threads are made directly in the polycarbonate.  Polycarbonate is a very tough material, but we still recommend  to not overtight screws/bolts (finger-tight is more than enough for sealing the tube).

 

 

 

 

Low Power DTU

A Remote Data Terminal Unit (DTU) is a communication device making it possible to form a wireless (GPRS/UMTS) transparent communication channel between a "legacy" serial device and modern TCP (internet) enabled host software. A DTU is similar to the well known classic or cellular MODEM, but has several advantages regarding scalability, performance and operating costs. A DTU based system is more scaleable, because the host does not require multiple MODEMS to be able to connect to multiple remote locations simultaneously, in fact the host does not need a MODEM at all and can serve lots of incoming DTU (TCP–client) connections simultaneously. Data communication over GPRS or UMTS is faster and less expensive than data communication over GSM.

Our DTU (sometimes refered to as RTU) is not a separated product, but an integral part of our ML–215/ML–315/ML–2013 Low Power Data Logger functionality. Because our Data Loggers are low power and self sustaining, the RTU function can be used to monitor "legacy" serial devices at remote locations with no access to a power grid or external power source. The RTU function can be programmed to wake–up at a regular interval or on alarm (e.g. an external digital interrupt). At wake–up the DTU switches on the power to the serial device, connects to the TCP–server and forms a transparent serial data channel between serial device and host (TCP–server). The transparent channel will be broken after expiration of a certain timeout or when the host drops the TCP–connection. After braking the transparent channel, the DTU will remove the power from the serial device (to prevent the device consumes power unnecessarily) and returns to low power sleep again.

Mobile connected internet devices have fixed IP–addresses seldom and most legacy serial devices don’t have a provision (in their protocol) to uniquely identify them selves. Obviously a host (TCP–server) wants to know where the connecting DTU (TCP–client) originates from and to assist the host to determine it, the DTU can be configured to send an identification string first before forming a transparent communication channel.

When no analog sensors have to be monitored, an ML–x15DS will be the most cost effective choice. An ML–x15DS is suitable for outdoor use and when equipped with the integrated solar panel a complete self providing remote monitoring station can be arranged, all you need is the ML–x15 and your serial device. This self providing DTU is costs saving, because you don’t need an external solar panel, big battery or GSM MODEM. 

 

 

Product Comparison

datalogger comparison

 

Accessories

Battery Power Bank

GPS Receiver

IP66 Weatherproof Low Power Camera 0.3M

IP66 Weatherproof Low Power Camera 1.3M

Satelitte Communication Transceiver

Mounting 

 

ML-COVER-3LI – Lithium Battery Power Pack - 3 x SAFT LSH20 (39000mAh)

The ML-COVER-3LI is equipped with D-size holders to host up to 3 Lithium SAFT LSH20 batteries safely, with a combined lossless capacity of 39000mAh. The ML-COVER-3LI is a replacement cover for our ML-x15 off-grid 3G/GPRS data loggers. 

Although our off-grid data loggers are designed to be as low power as possible, running it from just one single Lithium battery, due to the power demand of mobile communication, has its limits. If you have an application requiring 1 or 2 remote data updates each day a single battery powered data logger can run for years. When you need multiple remote data updates each day, then our data logger with tiny integrated 1Wp solar panel has proven to be a very suitable solution, assuming the data logger can be mounted outside facing the sun. If for obvious reasons a solar powered solution is not possible, then you could consider the use of a lithium battery pack. This is however something to consider with caution! 

Lithium batteries are having a high energy density and when used without caution, they can turn into dangerous devices. If you put multiple Lithium batteries with all having the same state of charge in parallel, then it could work, but using it like that is strictly discouraged by the battery manufacturer. 

The common save way to put batteries in parallel is by using diodes, but they come with a price. Although battery capacity is specified in mAh’s, it stores energy (mWh’s) and the diodes will dissipated a serious portion of this precious energy. The nominal voltage of a SAFT LSH20 is 3.6V@2mA, but during data logger operation load the voltage drops to 3.5V. A Shottky diode has a forward voltage of 0.3V, so a single diode will dissipate 8.5% of the stored energy. And because the voltage towards the logger drops, the electronics need to draw at least 8.5% more current to compensate the voltage drop. So using diodes will virtual reduce the capacity of a battery by almost 20%. When placing two Lithium’s (with two diodes) in parallel, the capacity increase will be about 65% instead of the expected 100%. 

The solar energy industry is experiencing the same kind of problems as blocking and by pass diodes are causing significant system losses. The semi-conductor industry reacted by developing a so called “smart diode”. A “smart diode” is a chip containing comparators, a FET and a regular diode. When the input voltage is lower than the output voltage the FET will not conduct, the battery will not contribute to the energy demand and the regular diode will block the possible reflux from other batteries. When the input voltage is higher than the output voltage, the FET will start to conduct and the battery will contribute to the energy demand. The forward voltage over the FET is just 26mV instead of 300mV. 

The ML-COVER-3LI is making use of such “smart diodes” and having three D-size battery holders. You can choose the insert one, two or three Lithium batteries to reach a combined capacity of 39000mAh. When even more capacity is required, multiple boards can be arranged in parallel as well. 

 

 

CAM–SO.3M – Camera – Single Lens 0.3M JPEG camera with 5M night Vision

 The CAM-x0.3M is a low power weatherproof camera that can be connected to an ML-x15ADS-PV or ML-2013.html data logger. The data logger can be configured to record snapshots at regular intervals (e.g. once or multiple times per day) and at alarm raise and fall conditions (e.g. at flooding a river) As we are acting in the low power domain, our camera solution has to be low power as well! Therefor remote streaming of video or taking super hires pictures at high speed is beyond the goal of our solution. The data logger can deliver the JPEG pictures in your e-mail box or to an FTP-server. The JPG pictures can also be transferred as "Digital Assets" to ydocInsights.

The CAM-B0.3M is provided with IR LED"s to be able to take B/W pictures at night as well as color pictures during daylight. The camera has only one (IR) lens and therefore the colors are deviating from the real colors, please consider the CAM-C0.3M camera if true colors are required (bad pictures when dark). Our data loggers can be configured to take pictures during a specified daily time bracket only (e.g. 07:00AM to 20:00PM or 21:00PM - 06:00AM) The CAM-x0.3M is meant to monitor objects at close distance and has a 90° angle of view and a night vision of max 5m. We recommend our CAM-D1.3M camera for monitoring objects at further distance. The CAM-x0.3M can take pictures up to 640x480 pixels. Taking a 640x480 picture draws 2.5mAh from the batteries, please use our online Data logger power consumption calculator to estimate the battery life of your application.

Specifications

  • CMOS image sensor

  • Image resolution
    › 160 x 128 pixels
    › 320 x 240 pixels
    › 640 x 480 pixels

  • JPEG image compression

  • IR lens with 3.6mm focus length

  • 90° angle of view

  • Maximum 5m night vision

  • Automatic white balance, exposure and gain control

  • RS-232 serial interface
    › To ML-x15ADS accessory port only
    › To ML-2013 one of the two RS-232 ports

  • Power supply (+5V maximum!)
    › +5V DC from the ML-x15ADS accessory port
    › +5V DC from the ML-2013 module power switch
    › 130-170mA working current

  • 1m cable with 4-wires
    › RX (Yellow) to TX of logger
    › TX (Green) to RX of logger
    › +5V (Red)
    › GND (Black)

  • 0.4kg weight

  • 62x52x52mm size

  • -20 to +85° working temperature

  • IP66 weatherproof enclosure

  • Optional pole mounting bracket

 

 

CAM–D1.3M – Camera – Single Lens 1.3M JPEG camera with 20M night Vision

The CAM-D1.3M is a low power weatherproof camera that can be connected to a solar powered ML-x15ADS-PV or ML-2013-PV data logger. The data logger can be configured to record snapshots at regular intervals (e.g. once or multiple times per day) and at alarm raise and fall conditions (e.g. at flooding a river) As we are acting in the low power domain, our camera solution has to be low power as well! Therefor remote streaming of video or taking super hires pictures at high speed is beyond the goal of our solution. The data logger can deliver the JPG pictures in your e-mail box or to an FTP-server. The JPEG pictures can also be transferred as "Digital Assets" to ydocInsights.

The CAM-D1.3M has a image sensor and lens for taking color pictures during daylight and an sensor and IR lens to take B/W pictures at night. The CAM-D1.3M has a 45° angle of view and a night vision of max 20m. We recommend our CAM-x0.3M camera for monitoring objects at close distance. The CAM-D1.3M can take pictures up to 1280x1024 pixels. Taking a 1280x1024 picture draws 8.5mAh from the batteries, we recommend to use our online Data logger power consumption calculator to estimate the battery life of your application. 

Specifications
  • Dual CMOS image sensor

  • Image resolution
    › 160 x 128 pixels
    › 320 x 240 pixels
    › 640 x 480 pixels
    › 1280 x 1024 pixels

  • JPG image compression

  • IR and color lens with 6mm focus length

  • 45° angle of view

  • Maximum 20m night vision

  • Automatic white balance, exposure and gain control

  • RS-232 serial interface
    › To ML-x15ADS accessory port only
    › To ML-2013 one of the two RS-232 ports

  • Power supply (+5V maximum!)
    › +5V DC from the ML-x15ADS accessory port
    › +5V DC from the ML-2013 module power switch
    › 320-350mA working current

  • 1m cable with 4-wires
    › RX (Yellow) to TX of logger
    › TX (Green) to RX of logger
    › +5V (Red)
    › GND (Black)

  • 1.5kg weight

  • 73x120x165mm size

  • -20 to +85° working temperature

  • IP66 weatherproof enclosure

  • Optional pole mounting bracket

 

 

SATELITTE COMMUNICATION TRANSCEIVER

The Iridium ITAS-5SP with embedded antenna has global data coverage and is a very suitable satelitte transceiver for low power data logging applications.

The ITAS-5SP can be connected to and powered (5VDC) from the accessory port of the ML-x15ADS data logger.

The satellite transceiver can be deployed as the data logger"s main communication device or as backup in case the 2G/3G network is temporarily unavailable or out of reach. When used as main communication device the data logger will transmit at regular intervals an SBD (Short Burst Data) message with the most recent aqcuired measurement values from the connected sensors. When used as a backup device it will only transmit an SBD message with recent aqcuired measurement values if the 2G/3G network is temporarily unavailable or out of reach. Historical logged data, not yet transmitted, will be transmitted as soon as the 2G/3G network becomes available again. This backup function could be very interresting for traveling data logging applications.

SBD messages are transmitted to an Iridium server (GSS: Gateway Short Burst Data Subsystem) and you can ask Iridium to pass SBD messages to an e-mail address or directIP to your or our server running ydocInsights or your own data collection software.

We don"t supply the ITAS-5SP, but when ordering at your local Iridium supplier, make sure you order the 5V version (ITAS-5-SP or HIRD-SX-0130x-01). 

Specifications

  • Click here for specifications published by Iridium.

  • Power supply (+5V maximum!)
    › +5V DC from the ML-x15ADS accessory port
    › +5V DC from the ML-2013 module power switch

  • Pin-outs or wires
    › P2, GND (Brown) to GND of logger
    › P3, RX (Green) to TX of logger
    › P4, TX (Yellow) to RX of logger
    › P5, 5V (Rose) to 5V of logger
    › P6, On/Off control (Gray) to 5V of logger

 

 

GPS Receiver 

The GPS-E3329 with embedded GPS antenna is very suitable GPS receiver for low power data logging applications.

The GPS-E3329 is based on the high performance features of the MediaTek 3329 single-chip architecture and has a "Fast time to first fix", which is obviously a very important property in low power data logging applications. The GPS-E3329 has an excellent -148dBm acquisition sensitivity, it can track 22 channels with a -165 dBm sensitivity, it supports common GPS as well as AAS/EGNOS/MSAS and GAGAN.

The GPS-E3329 can be connected to the accessory port of an ML-x15ADS or to one of the RS-232 ports of an ML-2013 data logger. Both loggers are having a 5V switched excitation output to only power the GPS-E3329 when its necessary to acquire a GPS position. The data logger can be configured to acquire position info at regular intervals (e.g. once or multiple times per day) and to save power, the GPS logging interval can be set independently of the normal data logging rate.

Recording a position draws 0.45mAh from the batteries, please use our online Data logger power consumption calculator to estimate the battery life of your application. 

Specifications

  • Receiver
    › 3.0m accurracy (CEP50)
    › L1 frequency band
    › 3 dB embedded antenna
    › C/A code
    › WAAS/EGNOS/MSAS/GAGAN support

  • Tracking
    › -165 dBm sensitivity
    › 22 channels

  • Acquisition
    › -145 dBm sensitivity
    › 66 channels

  • Acquisition time
    › 32s cold start
    › 23s warm start
    › 1s hot start

  • NMEA-0183 protocol (9600 baud)

  • RS-232 serial interface
    › To ML-x15ADS accessory port only
    › To ML-2013 one of the two RS-232 ports

  • Power supply (+5V maximum!)
    › +5V DC from the ML-x15ADS accessory port
    › +5V DC from the ML-2013 module power switch
    › 35mA working current

  • 1m cable with 4-wires
    › RX (Green) to TX of logger
    › TX (White) to RX of logger
    › 5V (Red)
    › GND (Black)

  • 90g weight

  • 46x45x15mm size

  • -40 to +85° working temperature

  • IPX6 waterproof enclosure

  

Mounting

The PBM is a pole mounting bracket made of tough UV-resistant polycarbonate, which is better than using a metal bracket as the metal can have a negative impact on the performance of integrated antennas (poor antenna performance causes more power consumption).

The PMK is a pole mounting kit existing out of a polycarbonate bracket (PMB), two 12mm width stainless steel (A2/W4/304) worm gear clamps to fix the bracket to a pole with a diameter ranging from 40 (1 5/8") to 60mm (2 3/8").The kit is including 4x M4 bolts (16mm), nuts and washers of stainless steel as well. The bracket can be used to mount an ML-315, ML-2013, CAM-D13M & CAM-SO3M

The bracket is excluding mounting accessories like clamps, nuts, bolts and washers.

 

Data Logger Power Consumption Calculator

Data Logging   Daily consumption
Data logging interval min.    
Number of parameters to log      
External sensor(s) power on time sec. (warm-up + sample time)    
External sensor(s) current @12V mA   Logging 4.32 mAh
Accessory   Daily consumption
Accessory    
Accessory logging interval min.    
Picture Format   Logging 0 mAh
Data transfer Payload   Daily consumption
TCP interval min. (0=disabled) 576 kB/mo.   TCP 0.00 mAh
MQTT interval min. (0=disabled) 0 kB/mo.   MQTT 0.00 mAh
HTTP interval min. (0=disabled) 0 kB/mo.   HTTP 0.00 mAh
FTP interval min. (0=disabled) 0 kB/mo.   FTP 0.00 mAh
E-mail interval min. (0=disabled) 0 kB/mo.   E-mail 0.00 mAh
Energy source   Daily balance
Battery capacity1) @3.6V mAh     Total consumption 42.66 mAh
Solar panel1) 2)      
Average daily full sun hours3) Hd (hours per day)   Average solar yield 275.63 mAh
Average daily full sun hours3)
during the darkest 3 months
Hd (hours per day)   Avg. dark days yield 92 mAh
   
Estimated batt. life Indefinite Days Indefinite Years   Worst case batt. draw -49.22 mAh
1) The calculations are taking the deterioration of the solar panel and rechargeable batteries already into account. In case of using our solar panel, use LSD NiMH rechargeables with a capacity of at least 2000mAh only (We advise GP-Recyko).

2) The 60° slope of our 1Wp solar panel is an optimum to get through the darkest months in Northern Europe. Outside the tropics you need to face the panel to the equator, inside the tropics you need the face the panel eastwards (Azimuth = -90º) or westwards (Azimuth = +90º).

3) Please consult the PV yield estimator for 
Europe  or Africa & Asia to determine the daily full sun hours (Hd) at the optimum Azimuth for our 60º sloped panel in your region. If your region is outside Europe or Africa, choose a matching GPS latitude in one of the maps.
 

Remote Solar Powered Weather Station

You can arrange a really low power and cost effective remote automated weather station by combining meteo sensors of your favourite brand with our ML-x15AD(S)-PV  3G/GPRS data logger with integrated solar panel. The arranged AWS is very cost effective because all you need is our reasonably priced data logger and applicable meteo sensors of your choosing, you don"t need a big solar panel, big battery, charger or encapsulating cabinet. 

Common parameters monitored by an AWS are: Air temperature, humidity, barometric pressure, precipitation, wind speed and direction. 

Temperature, humidity and barometric pressure 

Air temperature, humidity and pressure are relatively slow rising and declining parameters and recording their instant values every 5 or 10 minutes is enough for weather monitoring that does not have to be in compliance with strict (governmental) regulations. To preserve power, the data logger will power the sensors during sampling only. The sensors of your choosing can be connected to the analog inputs or SDI-12 interface of the data logger. 

Precipitation 

Precipitation can be recorded by connecting a classical tipping bucket rain gauge to one of the digital inputs of the data logger. Counting bucket pulses draws negligible power from the data logger"s internal batteries. The data logger records rain intensity, quantity and cumulative quantity. 

Wind speed and direction 

Wind is a very fluctuating subject and an accurate impression can not be given by taking a sample once a while, it requires continues sampling. To maintain low power consumption you have to pick your wind sensors with care as you have to choose sensors that draw negligible power from the data logger"s internal batteries. 

For wind speed you have to choose a classical powerless anemometer with magnet(s) and reed switch output, where each revolution of the anemometer causes one or multiple reed switch closures. The reed switch output can be connected to one of the digital inputs of the data logger. The data logger can sample the wind speed at 1Hz and record aggregated values (average, minimum, maximum, gust and standard deviation) every data log interval (e.g. 2 or 10 minutes). 

Examples of such anemometers are: Davis D6410Skye A100R or Synchrotac SYN710-1980 

For wind direction you have to choose a classical windvane with potentiometer output, which can be connected to the resistance input of the data logger. The data logger can sample the wind direction at 1Hz and record aggregated values (average, minimum, maximum and standard deviation) every data log interval (e.g. 2 or 10 minutes). 

Examples of such wind vanes are: Davis D6410Skye W200P or Synchrotac SYN710-2900 

Note 1: The higher the potentiometer resistance, the lower the power consumption. To decrease consumption you could consider to add resistors in series with the potentiometer of the wind vane (one in the ground wire and an equal one in the excitation wire to the windvane). Adding a resistance equal to the wind vane"s potentiometer, will decrease the windvane"s consumption by 50%. Its preferred to have a total resistance of at least 3k Ohm

Note 2: After connecting a wind vane with additional series resistors, its recommended to perform a 2 point user calibration (e.g. one point at 90° and one at 270°) 


Product sheets and additional files

view all files »

Remote Solar Weather StationDavis D6410 Remote Solar Weather Station Configuration Instructions

 

Logger Software

Please find here the latest firmware and Terminal software for the Low Power Data Logger Range

Product sheets and additional files

view all files »

ML-215/315 Logger Firmware

ML-2013 Firmware

WDL-214/314 Firmware

Data Logger Terminal Application