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Building Intelligence
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Wireless Precision Data Acquisition Node - Sensor Connectivity
| Overview | Performance | Mounting | Connectivity |
Sensor Connectivity
| Pin | Symbol | Function |
| 1 | R1+ | Resistance + |
| 2 | R1- | Resistance - |
| 3 | R2+ | Resistance + |
| 4 | R2- | Resistance - |
| 5 | V1 | Voltage |
| 6 | V2 | Voltage |
| 7 | GND | Ground |
| 8 | 5V | Power |
Resistance/Moisture Content
- • Channel 1: Connect moisture pins or Moisture Detection Tape to R1+ and R1-
- • Channel 2: Connect moisture pins or Moisture Detection Tape to R2+ and R2-
Temperature
- • For built in temperature reading no connectivity required.
- • External thermistor. Connect 104JT thermistor to R1+ and R1- or R2+ and R2-
Relative Humidity
| HTM2500 | WiDAQ | Function |
| Brown | Pin 7 | GND |
| White | Pin 8 | +5V |
| Yellow | Pin 5 or 6 (V1 or V2) | RH |
| Green |
Pin 1 or 3 (R1+ or R2+) R1- and R2- to GND |
°C |
| Black | Shield |
Differential Pressure
- • Mate extension tubes to the tubes provided.
- • Route tubes to locations where the differential pressure measurement is required.
Wired CAN Connectivity
 
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- • Connect gateway computer to the RJ45 connector on the WiDAQ.
- • At least one wired WiDAQ is required per system. Depending on the topology of the sensors, quantity and placement will need to be specified.