ML-x17, 2G/3G/4G(LTE-M) Data Logger

The ML-x17 data logger is a small, ultra low power, cost effective data logger with built-in 2G, 3G or 4G cellular modem. This small data logger, is further provided with an internal temperature sensor, 8GB micro SD card and a 2FF SIM card slot. The data logger is available with several power provisions e.g. a 3.6 Volt Lithium battery, 8..28V DC input or integrated solar panel with 3 x AA NiMH charger.

The data logger can acquire physical signals by 2 current loop inputs, 2 voltage inputs, 1 potentiometer input and 3 digital inputs. More or special inputs can be added by means of internal stackable option boards/converters. The data logger is provided with one serial port to capture measurements from ASCII, MODBUS, 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). Supports up to 8 aggregation channels (e.g. to record 2 or 10 minute wind speed averages sampled at 1Hz).

Logged data can be pushed to a central host by HTTP(S), FTP(S), e-mail, secure TCP or MQTT(S) at configurable intervals and optionally by satellite as well (Iridium SBD).

The ML-x17 is available in several editions and with 5 different cellular modems:

• ML-217: 2G Global
• ML-317: 3G Global with 2G fall-back
• ML-417: 4G Global (LTE Cat M1 aka LTE-M)
• ML-E417: 4G Europe (LTE Cat 1) with 2G fall-back
• ML-N417: 4G North-America (LTE Cat 1) with 3G fall-back

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 cellular logger is costs saving, because you don't need: a) solar panels, b) big batteries, c) cellular modem and d) encapsulating cabinet.

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 voltage/potentiometer input (0..3300mV, 12bit, max. 10M) a/o to connect a wind direction sensor
  
  
• 3x digital inputs (status, pulse counter or On-time meter) a/o to connect a flow meter, rain gauge or reed relay based wind speed sensor
  
  
• 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)
  
  
• 8x aggregation channels, min/max, average, gust, std dev and up to 3 different percentiles sampled at 1Hz max.
  
  
• 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: Read-out value registers from MODBUS (RTU/ASCII) slave devices
  › NMEA-0183: Sensors outputting standard and custom sentences
  › SDI-12: Read-out of up to 16 devices with up to 20 parameters per device using aC!, aM!, aCx! or aMx! commands
  
  
• 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)
  
  
• Accessories
  › Several stackable option boards
  › JPEG camera CAM-2.0M
  › GPS receiver GPS-E3329
  
  
• Built-in cellular data modem
  › ML-217: 2G Global (Quad-band GPRS)
  › ML-317: 3G Global (Penta-band)& 2G fall-back (Quad-band GPRS)
  › ML-417: 4G Global (LTE-M)& 2G fall-back (Quad-band GPRS)
  › ML-E417: 4G Europe (LTE Cat 1)& 2G fall-back (900/1800MHz)
  › ML-N417: 4G North-America (LTE Cat 1)& 3G fall-back (850/1900Mhz)
  
  
• 2FF (Class B) SIM-CARD slot
• 8GB µSD-Card (file storage), 512kB FLASH (program storage), 64kB SRAM (runtime memory)
• 60mA@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..60 sec. 3G data transfer
• <80uA@3.6V sleep current
• 12V@200mA switchable power outlet to power external sensors
• Power supply
  › 3.6V DC input for internal D-size Lithium battery³⁾
  › Optional 3xAA NiMH³⁾ charger and 1Wp solar panel integrated in cover
  › Optional 8..28V DC-Adapter and 3x AA NiMH charger integrated in cover
  › Optional 12V battery charger for 21VOC external solar panel 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(S), FTP(S)⁴⁾, e-Mail(SMTP)⁵⁾, secure TCP(AES-128) or MQTT(S)
  › JPG pictures by HTTP(S), FTP(S)⁴⁾, e-Mail(SMTP)⁵⁾, secure TCP(AES-128) or MQTT(S)
  › SBD messages by Iridium satellite modems (960x)
• Alerts by SMS, e-Mail⁴⁾ or MQTT
• Configuration by USB (local), secure TCP tunnel (remote) or optional Bluetooth LE (wireless)
• Rugged and waterproof IP67 enclosure (130x120x75mm)
• Optional pole mounting bracket
• Integrated GSM antenna, external GSM antenna optional
• Wide temperature operating range –30°C +75°C

1) 60mA 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) FTPS (TLS Explicit), ML-417 (LTE-M) does not support FTPS.
5) ML-417 (LTE-M) has no eMail abilities.

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.