1950G Series Catalog Page

NEW!
HAZARDOUS LOCATIONS
EXPLOSION PROOF AIR DIFFERENTIAL PRESSURE SWITCH
1950G SERIES
DESCRIPTION
The Dwyer 1950G Series explosion proof air differential
pressure switch monitors differential air pressure in a
hazardous environment. The 1950G Series has an external
screw type setpoint adjustment and a NEMA 7 and 9 rated
enclosure. The enclosure is anodized cast aluminum with
explosion proof rating for Class I, Division 1, Groups A, B, C,
D and Class II, Division 1, Groups E, F, G. The optional Model
A-602 pressure probe kit allows the 1950G Series to monitor
filter pressure drop.
FEATURES
• Class I, Division 1, Groups A, B, C, D
• Class II, Division 1, Groups E, F, G; Class III
• Ranges from 0.07" to 20" W.C. (17.4 to 4981 Pa)
• Adjustable setpoint within range
• SPDT 10A contacts
SPECIFICATIONS
C
DIMENSIONS
0.26" dia (0.66)
in
Mounting Holes (2)
(cm)
3.5
(8.89)
5.43
4.87 (13.79)
(12.37)
1/2" NPT
Electrical
Conduit
Connection
Supply Voltage
1.68
(4.27)
1/8" NPT Low
Pressure Port
Vent Drain
Plug
1.43
(3.63)
8
Closes on high differential pressure
Opens on high differential pressure
VAC
CAUTION: Conduit seal MUST be installed within
code-required distance from DP switch to maintain
explosion proof rating.
A-602
ACK6F
EYM-50
March 2014
B-120
HAZARDOUS LOCATIONS
C.
N.O.
N.C.
+
–
MODEL DESCRIPTION
1950G Explosion proof air differential pressure switch
OPERATING RANGE APPROXIMATE DEADBAND "W.C."(Pa)
RANGE
"W.C."
Pa
At Min Setpoint At Max Setpoint
00
0.06 (14.9)
0.04 (10)
0.07-0.15 17.4-37.3
0
0.11 (27.4)
0.06 (14.9)
0.15-0.5 37.3-124.5
1
0.29 (72.2)
0.11 (27.4)
99.6-398.5
0.4-1.6
5
0.9 (224)
348.7-1370 0.4 (99.6)
1.4-5.5
10
1.8 (448)
3.0-11.0 747.2-2740 0.9 (224)
20
3.0 (747)
1.2 (299)
996-4981
4.0-20
SUPPLY VOLTAGE
B-24 24 VDC
B-120 120 VAC
B-240 240 VAC
NON-ATEX
NA
For Non CE approval models
1
0.38
(0.95)
WIRING
ORDERING INFORMATION
1950G
US
Range Adjustment
Screw
1/8" NPT High
Pressure Port
24 VDC ± 10%, 208 mA; 120/240
VAC @ 5 VA
Switch
SPDT, 10A @ 240 VAC/28 VDC
Operating Temperature0° to 140°F (-18° to 60°C)
Connections
1/8" NPT
Diaphragm
Buna-N
Area
Class I, Division 1, Groups A, B, C,
D; Class II, Division 1, Groups E,
D, G; Class III
Burst Pressure
10 psig (69 kPa)
Approvals
UL File #E62583, FM, CSA, CE,
ATEX
Weight
3 lb (1.4 kg)
Warranty
1 year
FM
APPROVED
NA Example: 1950G-1-B-120 - NA 0.4-1.6" W.C.",
explosion proof air differential pressure switch
with 120 VAC supply voltage - non atex
RELATED PRODUCTS PAGE
Mounting kit for air filter applications. Includes two pressure tips,
two 5-foot lengths of aluminum tubing and two adapters.
Cement: 1.9 lb * (0.9 kg) Fiber: 0.3 LB (0.14 kg), 25 cu in (410 cu cm) volume when set
* Consists of five 0.4 lb (0.19 kg) cement pouches
489
1/2" size, 1.06" turning radius, 1 oz Kwiko cement required, Malleable Iron construction 488
WE MAKE IT EASY.
kele.com
888-397-5353 USA
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