The wiring diagram describes the
connections from the sensors to the HMS1655 backplane.
Note: Both
the BAPI humidity sensor and Ashcroft® differential pressure transmitter receive
power from the HMS1655 auxiliary power supply.
The fume hood controller model number is part code HMS1655. This model includes a controller module that mounts on the top of the monitored fume hood, and a mouted velocity sensor on the interior sidewall of the fume hood. The sidewall velocity sensor measures face velocities at the sash opening up to 200 ft/min with an accuracy of ±2 ft/min.
For a step-by-step procedure to configure the hardware resources of the HMS1655 fume hood controller for the application shown in Figure 1, see Configuring hardware resources.