Attachment 1 - Specifications.pdf
PDF 135 KB Posted
- Attached to
- Soil Moisture Probes Federal contract opportunity
- Solicitation number
- 12805B23Q0617
About this file
This attachment provides minimum specifications for a cosmic ray soil moisture sensor solicited by the Department of Agriculture Agricultural Research Service Field Research Implementation and Information Delivery Plains Area. The sensor must operate from 6 to 26 V DC with typical current draw of around 150 mA at 12 V. It requires 4 single-ended analog inputs ranging from 0 to 5V with 2.5 V resolution, 4 independent 16-bit DAC outputs ranging from 0 to 5V with 0.08 mV resolution, 4 TTL digital I/O ports configurable as inputs, outputs or counters, 4 solid-state relays rated for 30V DC at 1.2A, an internal temperature and relative humidity sensor with RH accuracy of around 3% and temperature accuracy of 1 degree, and a barometric pressure sensor with 0.1 mbar resolution. Additionally, it must provide 5V and 12V switched regulated power outputs.
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| File | Type | Posted |
|---|---|---|
| Sol_12805B23Q0617.pdf |
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Text version
Atachment 1 - Specifica�ons
Minimum Requirement Specifica�ons for Cosmic Ray Soil Moisture Sensor
Power requirements:
• 6 to 26 V DC
• Typical current crain ~150 mA @ 12 V
Analog inputs
• 4 Single-Ended inputs, 0 to 5V range.
• 2.5 V resolu�on (21 bits).
Analog outputs
• 4 independent 16 bit DAC outputs,0 to 5V.
• 0.08 mV resolu�on.Digital I/O ports
• 4 TTL ports, can be input, output, or counter.Relays
• 4 solid-state, rated for 30 Volts DC @ 1.2A.
Internal temperature/rela�ve humidity sensor
• RH accuracy ~ 3%.
• Temp accuracy ~ 1 deg.
Barometric pressure Sensor
• 0.1 mbar resolu�on.
Switched Regulated Power Outputs
• 5V and 12V
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