E2638 Carbon Dioxide CO2 Transmitter
The E2638-CO₂ carbon dioxide detector-transmitter offers reliable monitoring with a detection range of up to 40,000 ppm CO₂. Featuring a stable photoacoustic or optical NDIR sensor, this device is perfect for HVAC and air quality control in various settings, including public buildings, greenhouses, and boiler houses.
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Description
Features
- Stable long-life photoacoustic or optical NDIR sensor
- Range 0…10 000 ppm / 40 000 ppm / 5 %vol CO2
- Resolution 1 ppm / 10 ppm / 0.01 %vol CO2
- Two SPST relays (option)
- 2 × 4-20 mA or 0-10 V, RS485
Description
Carbon Dioxide detector-transmitter E2638-CO2 is a member of new PluraSens® family of multifunctional measurement instruments.
Applications include HVAC and air quality control in public, office and industrial buildings, greenhouses, underground parkings, boiler houses, and other areas, where potentially toxic concentration of carbon dioxide can accumulate.
The instrument utilises a fully calibrated and temperature compensated photoacoustic or optical NDIR gas sensor with excellent repeatability, stability and long lifetime. Ambient pressure compensation (in the range 0,5…2 bar of absolute pressure) is available as an option.
Two relays with closing contact (optional) may be used for remote signalling or concentration control. Two alarm set-points are user settable.
Two analog outputs and RS485 digital interface with industry standard Modbus RTU protocol can be used to connect the detector to safety or building automation systems.
Technical Data
| Calibration | carbon dioxide CO2 |
| Sensor type | photoacoustic |
| optical NDIR | |
| Sampling method | diffusion |
| Detection range | 0…10 000 ppm (10K) CO2 |
| 0…40 000 ppm (40K) CO2 | |
| 0…5 %vol (50KN) CO2 | |
| up to 100% CO2 on request | |
| Resolution | 1 ppm for 10K |
| 10 ppm for 40K | |
| 0.01%vol for 50KN | |
| Sensor lifetime | up to 10 years for 10K/40K |
| up to 5 years for 50KN | |
| Power supply | 12…36 VDC (default), |
| 24 VAC or 230 VAC as options | |
| Digital interface | RS485, Modbus RTU protocol |
| Analog outputs | 2 × 4-20 mA / 0-10 V, user settable |
| Output relays (option) | 2 × SPST relays (closing contact), |
| Enclosure | grey ABS plastic, wall mount, IP65 |
| Dimensions | H90 × W145 × D55 mm |
| Operating conditions | -40…+60 °C, 0…100 %RH |
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