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OEM Grains Per Pound Sensor Icon
OEM Wireless Sensors

OEM Wireless Grains Per Pound Sensor

The wireless grains per pound sensor measures the mass in grains of H2O in otherwise dry air. Put simplistically, the measurement is the weight of water in air. This sensor uses a calibrated humidity sensor to obtain the absolute humidity at the current temperature and converts that value into the Grains per Pound measurement displayed.

All sensor data is securely transmitted through an OEM wireless gateway to the iMonnit Online Sensor Monitoring software where it is stored and viewable from any web enabled device. The iMonnit online software system is completely white label (private brand) capable, allowing you to offer the online monitoring service as your own. Email and SMS text messages can be configured through the online system to alert users immediately when a defined parameter has been met or exceeded.

« Learn more about OEM online monitoring software

Product Features:

  • 900, 868 and 433MHz operating frequencies
  • 250 - 300 ft. non-line-of-sight device range*
  • Replaceable 3.0V battery
  • At 1 hour heartbeat setting, coin
    cell battery will last ~ 1-2 Years. **
     
  • Measures the weight of water in air.
  • +/- 1.8% accuracy (between 10% - 90% RH).
  • Scientific grade sensor.
  • Small size is ideal for embedded applications.
  • User defined thresholds for alerts and notifications.

* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting
    frequency and other variables.

 
Buy Wireless Grains Per Pound Sensors
 

OEM Wireless Grains Per Pound Sensor - Technical Specifications
 
Documentation
 
OEM Wireless Grains Per Pound Sensor Data Sheet OEM Wireless Grains Per Pound Sensor Data Sheet
 
 
RF Board Specifications
Available Operating Frequencies 900 MHz (25 Channels)
868 MHz (5 Channels)
433 MHz (15 Channels)
Device Transmission Range 300 - 500 ft. Non-LOS
Approximate Battery Life 300,000 Transmissions
(~ 2-5 Years Depending on Settings*)
Supply Voltage 2.0 - 3.6 VDC **
Current Consumption 0.7 μA (sleep mode)
2 mA (radio idle/off mode)
2 mA (measurement mode)
25 mA (radio RX mode)
35 mA (radio TX mode)
Operating Temperature Range -40°C to +85°C ( -40°F to +185°F ) ***
Performance 0.7% BFSL Accuracy
Certifications 900 MHz product; FCC and IC Certified.
Complies with Part 15 of the FCC Rules. (FCC ID: ZTL-RFSC1)
Complies with Industry Canada standards. (IC: 9794A-RFSC1)

868 and 433 MHz product; CE Certified.
Complies with CISPR 22:2008-09 / EN 55022:2010 - Class B and ETSI EN 300 220-2 V2.4.1 (2012-05).

Humidity Sensor Specifications
Accuracy: +/- 2% under normal conditions (10% - 90% RH)
Energy consumption: 80uW (at 12bit, 3V, 1 measurement / s)
RH operating range: 0 – 100% RH
T operating range: -40 – +125°C (-40 – +257°F)
RH response time: 8 sec (tau63%)
 
Maximal accuracy limits for relative humdity and temperature:
Relative Humidity Accuracy

* Battery life depends on sensor reporting frequency and other variables.
** Hardware can not withstand negative voltage. Please take care when connecting power.
*** At temperatures above 100°C, programmed memory can be lost.