GSTA-N-LCD | Nitrogen Dioxide Transmitter with universal current/voltage outputs | LCD display | Dwyer
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Brand: DwyerSKU: GSTA-N-LCD

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GSTA-N-LCD | Nitrogen Dioxide Transmitter with universal current/voltage outputs | LCD display | Dwyer

Nitrogen Dioxide Transmitter with universal current/voltage outputs, LCD display

Dwyer | GSTA-N-LCD
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Overview

Details for GSTA-N-LCD

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Nitrogen Dioxide Transmitter with universal current/voltage outputs | LCD display

SERIES GSTA CARBON MONOXIDE/NITROGEN DIOXIDE GAS TRANSMITTER

High Accuracy Electrochemical Sensor, Universal Output

The Series GSTA Carbon Monoxide/Nitrogen Dioxide Transmittersmonitor 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 andvoltage outputs allow the transmitter to be used with almost any buildingmanagement controller. For carbon monoxide units, the user can select the outputrange to be from 0 to 50 PPM or up to 0 to 500 PPM. Nitrogen dioxide units come with astandard 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-calibratedusing 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
  • Add optional integral LCD displayby adding -LCD to end of modelnumber (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

Specifications

Series
GSTA CARBON MONOXIDE/NITROGEN DIOXIDE GAS TRANSMITTER
Category/Type
Air Quality
Type
Carbon Monoxide Transmitters
Series
GSTA CARBON MONOXIDE/NITROGEN DIOXIDE GAS TRANSMITTER
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-449display.
Housing
UV resistant glass filled polycarbonate.
Output Signals
Switch selectable 4 to 20 mA (loop powered); 0 to 5 V @ 5 mA; or 0to 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 forconduit fitting.
Calibration
Via onboard push-buttons (LCD model only) or using optional A-449display. Span gas concentration is field selectable.
Enclosure Rating
IP64.
Weight
1 lb (.45 kg).
Agency Approvals
CE.

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