IridiumLink Logging Transmitter

Sutron is an authorized Iridium Valued Added Reseller. The IridiumLink Provides Complete Two-Way Communications with Remote Stations Anywhere in the World


GUI setup program. 2. Terminal strip with screw terminals for I/O and power connections 3. Operates 8-16VDC — 12V recommended for SDI-12 sensors 4. TCXO real-time clock with battery backup (+/-4ppm) 5. Solar panel regulator for panels up to 30 watts. 6. Support for up to 16 measurements of the following inputs:

  • SDI-12/RS485 (shared as is done in the Sutron Bubbler)
  • 5 Analog inputs:
    • Two (2) single ended inputs (range 0-5V)
    • Two (2) differential inputs (range +/-39mv, +/-312mV, +/-2.5V)
    • One (1) 4-20mA input
  • 2 digital inputs. They can be used for tipping bucket, frequency, and on/off inputs
  • 2 internal SPI for future expansion
  • Internal temperature
  • Battery voltage
  • Meta measurement

Options to average or accumulate 8. Lightning protection (Gas Tube) on all external inputs. 9. User specified equation on any measurement . 10. User specified alarm detection on any measurement. 11. 2 LED for verification/diagnostics. 12. Log capacity of 240K of data accessible via Iridium® and direct connect 13. Switched Battery Output 14. Also operates as a standalone recorder without telemetry 15. USB slave for connection to PC. THE USB PORT WILL NOT WORK with USB devices like memory sticks, modems, etc. 16. Real Time Clock operates with internal lifetime battery.



Measurement Interval 1 second to 24 hours
Number of Measurements 16 supported
ANALOG 2 Single ended, 2 Differential, 1 4-20ma
Single-Ended Analog 0-5 V (with respect to ground)
Number available 2
Input Range 0 to 5V (with respect to ground)
Resolution 0.298 µV
Noise (p/p) @250C 12.0 µV (p/p)
Accuracy @250C 0.003% (typ) Midscale 0.004% Max
Input Impedence > 1 MegOhm @250C
Differential Analog
Number Available 2
Range (SW selectable) ±39mV; Common Mode Voltage Range .3 to 3.9 Volts ±312mV; Common Mode Voltage Range .3 to 3.9 Volts ±2.5V ; Common Mode Voltage Range .1 to 4.9 Volt
Resolution 4.657 nV @ ±39mv scale, 37.25 nV @ ±312mv scale, 298 nV @ ±2.5v scale.
Noise (p/p) @250C 1.6 µV (p/p) ±39 mv / 312 mv scale 5.0 µV (p/p) ±2.5 v scale
Accuracy @250C 0.004% max @±2.5v scale
Input Impedance @250C >5 Meg Ohm 312mV FS Differential
4-20 mA Analog
Range Resolution Accuracy @250C Loop Power Loop Resistance 0 – 22mA
Digital Input 1, 2 Tipping Bucket Type Switch Contact Type. Pulse Width: 30ms – 120ms. Range: DC to 120 tips/min. (min).
Digital Input 1,2 Frequency Type
Minimum Frequency Maximum Frequency Input Range 2.8 Hz 10 KHz 0 – 5 V
Digital Input 1,2 Counter Type
Maximum Frequency 10 kHz (with no debouncing) 300 Hz (with debouncing)
Input Range 0- 5 Volts
Range -40 to +60°C
Accuracy ±3 degrees
Input Voltage 8-16VDC 10V min for SDI-12 sensor support Reverse power protected
Current Consumption 0.5mA standby typ (all sensors unpowered) 8 to 20mA active typ
Iridium Transmission 1 A @ 12 Volts
Power Connection 2 position terminal strip
SDI-12 Port 3 position terminal strip
Red Warning LED Indicates setup or operation error
Green Heartbeat LED Indicates unit operating properly
Earth GND .2″ screw terminal
Temperature -40°C to +60°C
Humidity 0-95% Non-condensing
Clock Internal real-time clock w/battery backup.
Accuracy ±9.3 s /month(Max) -40 to +60°C. (First Year)
Accuracy ±2.4 min /year (Max) -40 to +60°C. (First Year)
Accuracy ±4.5 min / 10 years (Max) -40 to +60°C. (10 Years)
Log Capacity 240,000 readings, flash memory
USB Port Connector Serial Communications / USB port
Mini-B Male USB connector on logger to be connected to USB Type-A Male (Windows PC). LinkComm software included for USB port communications
Internal Solar Panel Battery Charger 5 – 20W Panels. (Max 30 Watts) Automatic charge & float modes protect gel cell & acid batteries.
Iridium modem SMA-F Output RF Jack Modem factory installed, internal with RF output jack for antenna.
1 USB Mini-B Male (5 pin) Connector Serial Communications – USB. Not full function USB port. Iridium Modem SDI-12. RS485 (future support)
SDI-12 interface V1.3 compliant recorder
Supports up to 16 SDI-12 sensors Automatically combines requests to the same device +12V @ 500mA



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