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HIGH PURITY, ALL STAINLESS STEEL
PRESSURE AND VACUUM SWITCHES
Vacuum to 500 psi
PSW-690 Series
U All Stainless Steel
Wetted Parts
U Sensing Element
Capsule, Electron
Beam Welded
U Helium Leak Tested
4 x 10
U External Pressure Scale
and Pointer For Easy Set
Point Adjustment
U Available with 1⁄4 VCR
Male or 1⁄8-27 NPT
Male Fittings
U NEMA 4 Enclosure
U Available with
1 or 5 A Switch
-9
STD CC/sec
SPECIFICATIONS
Process Temp: -54 to 107°C
(-65 to 225°F); setpoint change of
up to 2% of sensor capacity may be
anticipated when switch is used either
below -23°C or above 51°C
Cycling: Not to exceed 20 cycles/min,
1 million cycles
Proof Pressure: 150% max pressure
Wetted Parts: 17-7 pH electron beam
welded, 303 SS fitting
Enclosure: 303 Stainless Steel body,
zinc alloy with chromate finish locking
ring and switch housing, valox cap
Dimensions: 51 L x 29 mm Dia
(2 x 1.125") with NPT fitting;
60 L x 29 mm Dia (2.375 x 1.125")
with VCR fitting
Weight: Approx. 85g (3 oz)
Pressure Port:
Electrical: 300 mm (12") pigtail leads,
20 AWG, polyvinyl insulated
1
⁄
8-27 MNPT or
PSW-696-V5,
shown actual size.
Wiring Code:
1
⁄
4 VCR
Pressure Switch: Black = Common,
Red = N/C, White = N/O
Vacuum Switch: Black = Common,
Red = N/O, White = N/C
PRESSURE SWITCHES
H
To Order
MODEL NO. DECREASING INCREASING REPEATABILITY PRESSURE
GAGE PRESSURE SWITCHES
PSW-691-N[*] 0.8 to 28.5 1.6 to 30.0 ±0.6 30
PSW-692-N[*] 2.0 to 48.0 3.0 to 50.0 ±1.0 50
PSW-693-N[*] 3.0 to 96.5 4.5 to 100.0 ±2.0 100
PSW-694-N[*] 7.5 to 242.5 9.7 to 250 ±5.0 250
PSW-695-N[*] 15.0 to 485.0 20.0 to 500.0 ±10.0 500
GAGE PRESSURE SWITCHES
PSW-691-V[*] 0.8 to 28.5 1.6 to 30.0 ±0.6 30
PSW-692-V[*] 2.0 to 48.0 3.0 to 50.0 ±1.0 50
PSW-693-V[*] 3.0 to 96.5 4.5 to 100.0 ±2.0 100
PSW-694-V[*] 7.5 to 242.5 9.7 to 250 ±5.0 250
PSW-695-V[*] 15.0 to 485.0 20.0 to 500.0 ±10.0 500
VACUUM SWITCHES
PSW-696-N[*] 1.6 to 27.0 2.7 to 28.2 ±1.2 29.9
VACUUM SWITCHES
PSW-696-V[*] 1.6 to 27.0 2.7 to 28.2 ±1.2 29.9
Comes complete with operator’s manual.
[*] Specify “-1” for 1 A or “-5” for 5 A switch.
Ordering Examples: PSW-692-N1, switch for maximum system pressure of 30 psig with
PSW-696-N5, switch with
1
⁄8
NPT FITTING (inHg)
1
⁄4
VCR FITTING (inHg)
1
⁄8 NPT fitting and 5A switch.
1
⁄8
NPT FITTING (psig)
1
⁄4
VCR FITTING (psig)
ADJUSTABLE RANGE
SETPOINT MAX
1
⁄8 NPT fitting and 1A switch.
H-14
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