Dwyer Instruments CDTC-2N000 | Communicating carbon dioxide transmitter with temperature output | 2000 PPM range and North American housing
The Dwyer CDTC-2N000 is a communicating CO₂ and temperature transmitter with a 0-2000 ppm CO₂ range and Modbus RTU or BACnet MS/TP communication over RS-485. It combines CO₂, temperature, temperature set-point and override functions in a single North American wall-mount housing for building automation and demand-controlled ventilation applications. Genuine stock at General Tech Services LLC, UAE, with free UAE-wide shipping. Request a quote in under a minute - call +971 6 5436933.
Part No. CDTC-2N000
Product Overview
The Dwyer CDTC-2N000 is part of the Series CDTC communicating CO₂ sensor family, combining the functions of multiple room sensors into one compact wall-mount housing. It measures CO₂ from 0-2000 ppm and temperature while providing temperature set-point and override functionality.
The transmitter communicates through 2-wire RS-485 using either Modbus RTU or BACnet MS/TP. A 4-wire connection and daisy-chain capability can simplify installation and reduce wiring requirements for multiple sensors.
On-board DIP switches are used to set the RS-485 MAC address, select the communication protocol and control access to the setup menu. Barometric pressure can be programmed to compensate for altitude.
The CDTC-2N000-LCD is the corresponding configuration with an integral LCD display.
Key Benefits
- Measures CO₂ from 0-2000 ppm and room temperature.
- Provides temperature set-point and override functionality.
- Supports Modbus RTU or BACnet MS/TP over RS-485.
- 4-wire connection and daisy-chain capability can reduce installation wiring.
- On-board DIP switches simplify MAC address and protocol selection.
- Programmable barometric pressure for altitude compensation.
- Compact North American wall-mount housing.
- LCD version available for local display of sensor readings.
- NDIR CO₂ sensing with a 15-year light source.
- Genuine Dwyer stock with free UAE-wide shipping.
Who This Product Is Best For
- Commercial buildings requiring room CO₂ monitoring for demand-controlled ventilation.
- BMS installations using Modbus RTU or BACnet MS/TP.
- HVAC automation systems requiring both CO₂ and temperature monitoring.
- Projects requiring CO₂ and temperature from one wall-mounted device.
- RS-485 installations using multiple sensors with daisy-chain wiring.
How to Specify & Commission It
- Confirm the 0-2000 ppm CO₂ range and wall-mount location are suitable for the application.
- Mount the North American housing on the wall in an appropriate sensing location.
- Wire the power supply and RS-485 connection, using the 4-wire/daisy-chain arrangement where required.
- Set the RS-485 MAC address and select Modbus RTU or BACnet MS/TP using the on-board DIP switches.
- Program barometric pressure for the installation altitude.
- Verify CO₂, temperature, set-point and communication readings before placing the system into service.
Frequently Asked Questions
What does the Dwyer CDTC-2N000 measure?
It measures CO₂ from 0-2000 ppm and temperature, with temperature set-point and override functionality.
What communication protocols are supported?
The transmitter supports Modbus RTU or BACnet MS/TP over 2-wire RS-485, selected using the on-board DIP switches.
What is the CO₂ accuracy?
CO₂ accuracy is ±40 ppm ±3% of reading.
Does the CDTC-2N000 have a display?
No. The CDTC-2N000 does not include an integral LCD. The CDTC-2N000-LCD version adds an integral LCD display.
Can multiple sensors be connected together?
Yes. The transmitter supports a 4-wire connection and daisy-chain configuration for RS-485 installations.
Does it support altitude compensation?
Yes. Barometric pressure can be programmed to compensate for altitude.
What is the difference between CDTC-2N000 and CDTC-2N000-LCD?
The CDTC-2N000 provides the communicating CO₂ and temperature functions without an integral display. The CDTC-2N000-LCD adds an integral LCD for local indication.
Is genuine Dwyer stock available with UAE shipping?
Yes. Genuine Dwyer stock is available from General Tech Services LLC, UAE, with free UAE-wide shipping. Call +971 6 5436933 for pricing and current availability.
Request a Quote Today
For pricing or to place an order, contact General Tech Services LLC.
Call +971 6 5436933 | www.generaltechshop.ae
