Dungs GGAO-A4-4 Instrucciones de instalación - Página 2
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Specification
GGAO-A4...
SPDT gas/gas differential pressure switch in pressure ranges. The differential pressure acts via the dia-
phragm against the force of the setting spring on the microswitch. The pressure switch operates without
any auxiliary power.
[PSI]
[V] [A]
[Hz] [VA]
Ag
[A]
NEMA
Model Description & Part Number
Type
Version
Gas differential
GGAO-A4-4-2
pressure switch
GGAO-A4-4-3
GGAO-A4-4-5
GGAO-A4-4-6
Operation
Definition of switching
hysteresis ∆p
The pressure difference between the
upper and lower switching pressures.
Max. Operating Pressure
MOP = 7 PSI (500 mbar)
Electrical Connection
Screw terminals via 1/2" NPT conduit
connection
Contact Rating
10 A resistive @ 120 VAC
5 A resistive @ 240 V
1 A max. @ 12 - 48 VDC
DDC-Application
min. 5 mA @ 5 VDC
max. 20 mA @ 24 VDC
Enclosure
NEMA Type 4
Description
Threaded connection
Threaded connection
Threaded connection
Threaded connection
Pressure
at meter
°F
+153
0
-40
Gas
SPDT
Order No. Setting range
in. W.C.
271329
0.16 -
271330
0.40 -
271331
2.00 - 20.00
271332
12.00 - 60.00
Setpoint tolerance
Ambient / Medium Temperature
-40 °F ... +153 °F
(-40 °C ... +67 °C)
Gases (both + and - connection)
Suitable for natural gas, propane,
butane, air & non aggressive gases.
Materials in contact with Gas
(+ connection)
Housing: Aluminum
Diaphragm: NBR-based rubber
Materials in contact with Gas/Air
(- connection )
Housing: Aluminum & Steel
Diaphragm: NBR-based rubber
Switching contact: Gold (Au)
Switch
SPDT
Switch action
Pressure, vacuum of differential
pressure switch
Switching
hysteresis
in. W.C.
1.20
≤ 0.12
4.00
≤ 0.20
≤ 0.40
≤ 1.2
Upper switching
pressure
Lower switching
pressure
Factory
Calibration
2 ... 5