PSN40-400A differential pressure switch is used for fan status and dirty filter applications. A knob with pressure values on it allows the setpoint to be adjusted visually in the field. The plastic duct probe tubes, flexible silicon tubing and the mounting screws are included with all models.
On/off dry max contact rating, 250V, 0.4 amps.
Easy to adjust the set point using the scaled adjustment knob.
Dial includes both ‘in WC’ markings as well as Metric marks in Pascals.
Silicon tubing will not become brittle over time and at low temperatures.
Comes with everything you need: switch, pipes & tubes, screws.
The Air Flow Sensor senses air flow in HVAC ducts and report air flow over both analog and digital (Modbus an Bacnet) communication protocols. An instrument grade Pitot tube provides outstanding accuracy with maximum efficiency over various duct widths.
Setting analog output range through Modbus register
The Pressure Monitor is used to measure differential pressure in the range of +/-1″ wc full scale, +/-8″ wc, 0 ~100 PSI,0~250 PSI.It combines precision, high sensitivity silicon sensing capabilities and the latest ASIC technology to substantially reduce offset errors due to changes in temperature, stability to warm up, long term instability and position sensitivity. BACnet MS/TP and Modbus RTU protocols over RS485,with an ethernet port.