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
Models & Ordering
Specifications
- Sensor:
- Field replaceable electrochemical, 4 years typical lifespan. Recommend calibration every 6 months.
- Range:
- NO2: 10 PPM; CO: Switch selectable 200 or 500 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
- Temperature Limits:
- Ambient: -4 to 122°F (-20 to 50°C); Storage: 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 to 20 mA (loop powered), 0 to 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).
- Agency Approvals:
- 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
Accessories
| Model Number | Description | Usually Ships* | Price | Order | |
|---|---|---|---|---|---|
 |
A-449 | Remote display with mini USB display. | Next Day | $59.00 | Order |
 |
A-505 | Replacement Carbon Monoxide Sensor for the GSTA & GSTC Series, Model CMT200 | 2-3 Weeks | $61.50 | Order |
 |
A-506 | Replacement Nitrogen Dioxide Sensor for GSTA & GSTC Series | 2-3 Weeks | $165.00 | Order |
 |
A-507 | Gas calibration kit adaptor. | Next Day | $61.50 | Order |
 |
GCK-200CO-2000CO2 | Gas Calibration Kit (GROUND SHIPMENTS ONLY) |
Next Day | $573.00 | Order |
 |
A-GSTA-SE | Security enclosure. | 2-3 Weeks | $17.25 | Order |
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 |
Product Literature
Manuals
Catalog Pages
Product Data Sheet
SlideShare
Approvals
Drawings
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