Series GSTA Carbon Monoxide/Nitrogen Dioxide Gas Transmitter

High Accuracy Electrochemical Sensor, Universal Output

The Series GSTA Carbon Monoxide/Nitrogen Dioxide Transmitters monitor the gas concentration in underground parking garages and loading docks. Carbon monoxide is commonly used to measure the exhaust of gasoline engines, while nitrogen dioxide is used for diesel engines. Field selectable current and voltage outputs allow the transmitter to be used with almost any building management controller. For carbon monoxide units, the user can select the output range to be from 0 to 50 PPM or up to 0 to 500 PPM. Nitrogen dioxide units come with a standard 0 to 10 PPM range. The output can be inverted to read 20 to 4 mA or 10 (5) to 0 VDC using internal dip switches.

To maximize the accuracy of the Series GSTA, the sensor can be field-calibrated using the A-449 remote LCD display. When the sensor reaches the end of its life, the display will indicate that the sensor needs to be replaced.

Product Applications

Garage or loading dock ventilation
Mechanical room monitoring

Starting at $228.05

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Grouped product items
Model	Description	Availability*	Qty	Price
GSTA-C	Carbon Monoxide Transmitter with universal current/voltage outputs	1-3 days*		$228.05
GSTA-C-LCD	Carbon Monoxide Transmitter with universal current/voltage outputs, LCD display	1-2 Weeks*		$290.00

Specifications

Sensor:: Field replaceable electrochemical, 2 years typical lifespan.
Range:: CO: Switch selectable 200 or 500 PPM; NO2: 10 PPM.
Output Drift:: <5% per year in air.
Coverage Area:: 5000 to 7500 sq ft typical.
Accuracy:: CO: ±2% FS, NO2: ±3% FS, at the time of calibration.
Resolution:: CO: 1 PPM; NO2: 0.1 PPM.
Temperature Range:: Ambient: -4 to 122°F (-20 to 50°C).
Storage Temperature:: For best sensor life, 32 to 68°F (0 to 20°C).
Humidity Limits:: 15 to 90% RH constant; 0 to 99% RH intermittent.
Response Time:: <45 seconds to 90% CO, <25 to 90% NO2.
Span and Zero Adjustment:: Via pushbutton, using optional A-449 display.
Housing:: UV resistant glass filled polycarbonate.
Output Signals:: Switch selectable 4-20 mA (loop powered), 0-5 V @ 5 mA, or 0 to 10 V@ 5 mA; Switch selectable 0 to 5 V / 1 to 5 V and 0 to 10 V / 2 to 10 V; Switch selectable normal or reverse output.
Power Requirements:: Current output: 10-35 VDC, Voltage output: 15-35 VDC or 15-29 VAC.
Electrical Connection:: Removable terminal block, knocks out for conduit fitting.
Calibration:: Via onboard push-buttons (LCD model only) or using optional A-449 display. Span gas concentration is field selectable.
Enclosure Rating:: IP64.
Weight:: 1 lb (.45 kg).
Compliance:: CE.

Features

Add optional integral LCD display by adding -LCD to end of model number (Example: GSTA-C-LCD)
Industrial grade replaceable CO or NO2 sensors
Field selectable current or voltage output on GSTA models
Service display tool for set-up and calibration of models without a LCD

Support Library

Product Literature

Manuals

Catalog Pages

Series GSTA Catalog Page

Product Data Sheet

GSTA

SlideShare

Approvals

Drawings

Videos

Model Chart

EXAMPLE	GSTA	C	D	Series GSTA-C-D, Carbon Monoxide Transmitter, CO Carbon Monoxide, duct mount
SERIES	GSTA			Carbon Monoxide Gas Transmitter
GAS TYPE		C N		CO Carbon Monoxide Nitrogen Dioxide
OPTIONS			D LCD	Duct Mount LCD Display

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Accessories

Model	Description	Availability*	Price
A-449	Remote display with mini USB display	1-3 days*	$68.60
A-505	Replacement carbon monoxide sensor for the Series GSTA, GSTC, & CMT200	1-2 Weeks*	$81.50
A-GSTA-SE	Security enclosure.	1-3 days*	$18.65
GCK-200CO-2000CO2	Gas Calibration Kit (GROUND SHIPMENTS ONLY)	1-3 days*	$726.55