GSTC-N-LCD | Nitrogen Dioxide Transmitter with BACnet & Modbus Communication with Integral LCD Display | Dwyer
Nitrogen Dioxide Transmitter with BACnet & Modbus Communication with Integral LCD Display
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Dwyer GSTC-N-LCD Documents
Overview
Details for GSTC-N-LCD
Nitrogen Dioxide Transmitter with BACnet & Modbus Communication with Integral LCD Display
SERIES GSTC CARBON MONOXIDE/NITROGEN DIOXIDE GAS TRANSMITTER
The Series GSTC Carbon Monoxide/Nitrogen Dioxide GasTransmitter monitors the gas concentration in underground parking garages andloading docks. The carbon monoxide transmitter is used to measure the exhaust ofgasoline engines, while the nitrogen dioxide transmitter is used for diesel engines. TheSeries GSTC is compatible with either BACnet or Modbus® communication protocol,allowing the transmitter to be used with almost any building management controller.The GSTC output is communicated over an RS-485 wire via BACnet or Modbus®communication protocol. To maximize the accuracy of the Series GSTC, the sensorcan be field-calibrated using the A-449 remote LCD display. When the sensor reachesthe end of its life, the display will indicate that the sensor needs to be replaced.BACnet and Modbus® communication protocol recommend limiting the number ofnodes in any segment to 32. Therefore, the transceiver may be rated at one unit load.Fractional loads are also acceptable. The Series GSTC accounts as an eighth of aload on the MS/TP network.
FACTORY CALIBRATED choices are available under "Filter By" on the Ordering tab.
Product Applications
- Parking Garages
- Loading Docks
- Mechanical Room Monitoring
- Industrial grade replaceable CO or NO2 sensors
- Field selectable BACnet or Modbus® communication on GSTC models
- Integral LCD display option
- Service display tool for set-up and calibration of models without a LCD
Specifications
- Series
- GSTC CARBON MONOXIDE/NITROGEN DIOXIDE GAS TRANSMITTER
- Category/Type
- Air Quality
- Type
- Carbon Monoxide Transmitters
- Series
- GSTC CARBON MONOXIDE/NITROGEN DIOXIDE GAS TRANSMITTER
- Sensor
- Field replaceable electrochemical; 4 years typical lifespan.
- Range
- CO: 0 to 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 Limits
- -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 s to 90% CO; <25 s to 90% NO2.
- Span and Zero Adjustment
- Via pushbutton; using optional A-449 display. Zeroonly via BACnet or MODBUS® communication protocol.
- Housing
- UV resistant glass filled polycarbonate.
- Output Signals
- BACnet MS/TP; MODBUS® RTU; or MODBUS® ASCII (switchselectable) communication protocol.
- Power Requirements
- 10-36 VDC or isolated 21.6-33 VAC; 5.7 mA @ 24 VDC.
- Electrical Connection
- Removable terminal block; knock outs for conduit fitting.
- Calibration
- Via pushbuttons using A-449 auxiliary display. Span gasconcentration is field selectable.
- Enclosure Rating
- IP64.
- Weight
- 1 lb (0.45 kg).
- Agency Approvals
- CE.
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