Input Power

Class 2; 12 to 30 Vdc, 24 Vac 50/60 Hz; 100 mA

max.

Operating Temp Range

No humidity option: 0 to 50 °C (32 to 122 °F);

With humidity option: 10 to 35 °C (50 to 95 °F)

Operating Humidity Range

0 to 95% RH non-condensing

Housing Material

High impact ABS plastic, UL 94 V0

Terminal Block Torque

0.22 N-m (2.0 in-lbf) max.

Terminal Block Wire Size

30 to 18 AWG (0.08-0.5mm2)

Protocol

BACnet or Modbus (selectable)

Connection

2-wire RS-485

Data Rate

9600, 19200, 38400, 57600 (Modbus),

bps (selectable);

9600, 19200, 38400, 76800 (BACnet),

bps (selectable)

Parity

None/Odd/Even (selectable-Modbus); None

(BACnet)

Address Range

1 to 127

Setpoint Slider Resolution

Option

1% full scale

Override Button Option

Remotely readable and resettable

CW Protocol Series is a non-dispersive infrared (NDIR) sensor designed

for measuring CO

2 concentration in ventilation systems and indoor

living spaces. Its measurement range of 0 to 5000 ppm makes it the

premier solution for meeting ASHRAE and other ventilation efficiency

standards.

CW Protocol devices feature embedded BACnet and Modbus

communication protocols, as well as optional temperature and humidity

sensors. An adjustable setpoint relay is provided for direct control and

alarm applications, and the optional setpoint slider and pushbutton

override offer additional local input.

CWLP

CWXP

CO2 TRANSMITTER

Sensor Type

Non-dispersive infrared (NDIR) diffusion

sampling

Measurement Range

0 to 5000 ppm

Accuracy*

±30 ppm ±2% of measured value

Repeatability

±20 ppm ±1% of measured value

RH TRANSMITTER OPTION

HS Sensor

Replaceable digitally profiled thin-film

capacitive ; (32-bit mathematics); U.S. Patent

5,844,138

Accuracy**

±1% from 12 to 60% RH; ±2% from 10 to 80%

RH; NIST traceable multi-point calibration

Reset Rate***

24 hours

Stability

±1%@ 20 °C (68 °F) annually for two years

Hysteresis

1.5% typical

Temperature Coefficient

±0.1% RH/°C above/below 25 °C (typical)

TEMPERATURE TRANSMITTER OPTION

Sensor Type

Solid-state, integrated circuit

Accuracy

±0.5 °C (±1 °F) typical

APPLICATIONS

• Controlling ventilation in

response to occupancy

• Office buildings, conference

rooms, schools, retail stores, etc.

SPECIFICATIONS

800.354.8556 | +1 503.598.4564 | sales@veris.com | intl@veris.com | www.veris.com

TM

Air Quality / Gas Detection | Deluxe Duct & Wall CO

2 Sensors, Protocol Communication

CW PROTOCOL SERIES

Individual or 3-in-1 with Modbus or BACnet

Protocol

Communicating

Embedded BACnet and Modbus

communication protocols…easy

systems integration

Feature override

Local feature override capability

from the building control

system…added control and

flexibility

Configurable

baud rates

Configurable to multiple baud

rates…transfer data at the

right speed for the system

Self-calibrating

Innovative self-calibration

algorithm…maximizes

performance. Field calibratable…

minimizes downtime.

CO

2, RH, temp

CO

2, humidity, and temperature

sensors in one device at one

address…provides more

information and maximizes

system capacity

NIST or standard

Available with 2% NIST or

2% standard RH

HQ0001721.F 0117