This document is a manual, which introduces the installation, use and maintenance methods of the ELECTRA-FLO / SD Thermal Airflow & Temperature With Dual Analog Output product.
This guide provides instructions for the installation, operation, and maintenance of the Air Monitor ELECTRA-FLO/SD Thermal Airflow & Temperature measurement system. The device measures average air velocity and temperature using surface-mount thermistor sensors and transmits data via dual analog outputs.
The manual covers safety precautions, typical installation scenarios for VAV boxes and ducts, and detailed steps for mounting the unit to duct walls. It also explains power and signal connections, configuration via DIP switches, and troubleshooting procedures.
| Accuracy (Velocity) | ±2% of Reading |
|---|---|
| Accuracy (Temperature) | ±0.15º F |
| Power Supply | 24 VAC (20-28 VAC) or 24 VDC (20-40 VDC) |
| Temperature Limits | -20º F to 120º F |
| Humidity Limits | 0 to 99% RH, non-condensing |
| Output Types | Dual analog for airflow and temperature |
The velocity ranges are user selectable via DIP switches and include 0 to 500 FPM, 0 to 1000 FPM, 0 to 2000 FPM, and 0 to 3000 FPM.
Locate the sensor a minimum of 3" upstream of the VAV box, or 3" upstream of the pneumatic flow ring if the ring is removed.
It is recommended that power wiring be 18 awg and signal wiring be 18 awg to 22 awg.