Relay Type : SPDT C-->N.O. @ setpoint Pressure rise
Relay Rating : 15 A resistive, 125/250/480 VAC
Setpoint : Internal Adjustment red 5/16th hex nut
Differential :
J21K-140: 0.1 to 0.4 psi (0.7 to 3 kPa)
J21K-150 : 0.3 to 0.7 psi (2 to 5 kPa)
J21K-232: 0.6 to 1 psi (4 to 7 kPa)
J21K-(254, 257): 2 to 4 psi (14 to 28 kPa)
Repeatability: ±1% over full range
Reset : Automatic reset by differential
Sensor Type :
J21K-1x0: Brass bellows diaphragm
J21K-2xx: Bronze bellows diaphragm
J21K-357: Stainless Steel bellows diaphragm
Operating Pressure Range :
J21K-140: 30″ Hg vac to 30 psi (1241 kPa)
J21K-150: 30″ Hg vac to 180 psi (1241 kPa)
J21K-232: 30″ Hg vac to 110 psi (759 kPa)
J21K-254: 30″ Hg vac to 200 psi (1379 kPa)
J21K-357: 30″ Hg vac to 350 psi (2413 kPa)
Overpressure: (Burst) 180 psid (1241 kPa)
Max Operating Pressure: (Proof)
J21K-140: 6 psid (41 kPa)
J21K-150: 40 psid (276 kPa)
J21K-232: 25 psid (172 kPa)
J21K-254: 90 psid (620 kPa)
J21K-357: 70 psid (483 kPa)
Operating Temperature: -40° to 160℉ (-40° to 71℃)
Operating Humidity: 10 to 90% Non-condensing
Wetted Parts: Brass, Bronze or SS bellows (See ordering)
Media Compatibility: Water, Glycol and Inert dry air
Process Connection: 1/4″ FNPT
Wiring Terminations: 3 Screw terminals (Com, NO, NC), 14 AWG max
Mounting: 2 tab holes 0.25″ dia
Enclosure Rating: Cast aluminum w/7/8″ conduit hole, NEMA 4X
Dimensions: 4.228″W x 8.0″H x 2.66″D, (10.7 x 20.5 x 6.8 cm)
Weight: 2.0 lb (0.9 Kg)
Approvals: UL File #E42272, CE
Warranty: 1 year
