Submittal Sheet

©Copyright 2020 Dwyer Instruments, Inc.
Printed in U.S.A. 6/20 DS-GSTA-GSTC Rev. 1
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DIMENSIONS WIRING DIAGRAM
HOW TO ORDER
SERIES
GSTA: Field selectable analog outputs
GSTC: Field selectable BACnet or Modbus
®
communication protocol
GAS SENSED
-C: CO, carbon monoxide
-N: NO2, nitrogen dioxide
OPTIONS
BLANK: Wall mount without options
-D: Duct mount
-LCD: Wall mount with integral LCD
GSTA -N -LCD
Use the bold characters from the chart below to construct a product code.
ACCESSORIES
Model Description
A-GSTA-SE
GCK-200CO-2000CO2
A-449
A-505
A-506
A-507
Security enclosure
Calibration gas
Remote LCD display
CO replacement sensor
NO2 replacement sensor
Calibration adapter
3-45/64
[94.06]
3-1/8
[107.95]
2-15/64
[56.75]
4-17/32
[115.09]
5-7/64
[129.78]
3-59/64
[100]
2-15/64
[57]
2-55/64
[73]
3-23/64
[85]
TO NEXT
DEVICE
B(+)
A(-)
PWR
COM
TO
PREVIOUS
DEVICE
B(+)
A(-)
PWR
COM
ATTACH SHIELDS
TOGETHER W/WIRE NUT
PWRCOM A(-)B(+)
1234
B(+)
A(-)
B(+)
A(-)
COM
-+
COM
TO
PREVIOUS
DEVICE
TO
NEXT
DEVICE
ATTACH SHIELDS
TOGETHER W/WIRE NUT
PWRCOM A(-) B(+)
1234
1
2
3
4
RECEIVER
-
+
-
+
POWER
SUPPLY
I OUT WIRING
1
2
3
4
RECEIVER
-
+
-
+
POWER
SUPPLY
V OUT WIRING
GSTA current output
GSTC common power supply
GSTC local power supply
GSTA voltage output
Modbus
®
is a registered trademark of Schneider Automation, Inc.
A-449A-GSTA-SE A-505 A-506
A-507
GCK-200CO-2000CO2