United Electric J21K Differential Pressure SwitchThe United Electric J21K Series is simple to install and operate for alarm, safety and emergency shutdown applications requiring a higher switch sensitivity. It monitors the difference between two system pressures or vacuum using sealed, opposing bellows sensors. As an electromechanical switch, it can safely operate independently of the control system and switch reliably when called upon, free from potential communication errors or cyber concerns.

verify device status

Digital Rate-of-Flow with selectable engineering units

2 pumps lead-lag with 2 alarms

Spade Terminals and others

refrigeration systems and heat pumps

limited reference temperature adjustment

8 KPA through to 310 KPA

The flowmeter produces a frequency signal

PNP or 5-Amp Relay Output versions

Optimised measurement accuracy due to stylish well vented housing allowing good air flow

Click to read more about our MacNaught Digital Diesel Meter ADTFM

negative or differential