CMa20

1050025

Sensors

Elvaco offers temperature and humidity sensors, both for indoor and outdoor environments. The product line enables simple and cost-effective metering, which enables a more effective use of energy and a better real-estate climate. Sensors are available with M-Bus or Wireless M-Bus communication, as well as with or without display.

CMa20 is an outdoor temperature and humidity sensor which uses standard M-Bus communication. It has a high accuracy and provides information about momentaneous meter values as well as average meter values for the last hour and day.

Technical Specification

Mechanics

Casing material:: Polystyrol
Protection class:: IP65
Dimensions (w x h x d):: 110 x 100 x 52 mm
Mounting:: Wall-mount
Weight:: 140 g

Electrical connections

Supply voltage:: From M-Bus
M-Bus slave port:: Screw terminal. Cable 0.25-1.5 mm², 0.5 Nm tightening torque

Electrical characteristics

Nominal voltage:: 21-42 VDC

Environmental specifications

Operating temperature:: -40 °C to +55 °C
Operating humidity:: 0 to 100 %
Operating altitude:: 0-2000 m
Pollution degree:: Degree 2
Usage environment:: Outdoors
Storage temperature:: -40 °C to +85 °C
Measurement range, temperature sensor:: -40 °C to +55 °C
Measurement range, humidity sensor:: 0 % RH to 100 % RH

Temperature sensor, margin of error

Temperature: 10 °C to 30 °C:: ±0.2°C
Temperature: 0 °C to 10 °C:: ±0.4°C
Temperature -10 °C to 0 °C:: ±0.5°C
Temperature: below -10 °C or above 30 °C:: ±1.5°C

Humidity sensor, margin of error

Humidity: 10 % RH to 90 % RH:: ±2% RH
Humidity: below 10 % RH or above 90 % RH:: ±4% RH

User interface

LCD diplay:: No
Momentary values:: Temperature, humidity, status
Historic values:: Average value over the last hour and last day

M-Bus

Interfaces:: M-Bus slave
M-Bus standard:: EN 13757

Wireless M-Bus

Integrated M-Bus Master

Wireless M-Bus Receiver

M-Bus slave interface

M-Bus baud rate, slave port:: 300 and 2400 bit/s
Nominal voltage, slave port:: 21-42 VDC
Addressing modes:: Primary, secondary
Power consumption:: 1T/1.5 mA
Default address:: 0

General

Data storage (examples)

Mobile Network

Fixed Network (Ethernet)

Integration

Compatibility:: Devices using the M-Bus protocol

Approvals

EMC:: EN 61000-6-2, EN 61000-6-3

Connections and Interfaces

Transmissions

Casing material:: Polystyrol
Protection class:: IP65
Interfaces:: M-Bus slave
Dimensions (w x h x d):: 110 x 100 x 52 mm
Mounting:: Wall-mount
Supply voltage:: From M-Bus
Nominal voltage:: 21-42 VDC
Operating temperature:: -40 °C to +55 °C
Operating humidity:: 0 to 100 %
Operating altitude:: 0-2000 m
Pollution degree:: Degree 2
Usage environment:: Outdoors
Storage temperature:: -40 °C to +85 °C
M-Bus baud rate, slave port:: 300 and 2400 bit/s
Nominal voltage, slave port:: 21-42 VDC
Addressing modes:: Primary, secondary
EMC:: EN 61000-6-2, EN 61000-6-3
Power consumption:: 1T/1.5 mA
LCD diplay:: No
M-Bus standard:: EN 13757
M-Bus slave port:: Screw terminal. Cable 0.25-1.5 mm², 0.5 Nm tightening torque
Default address:: 0
Compatibility:: Devices using the M-Bus protocol
Measurement range, temperature sensor:: -40 °C to +55 °C
Measurement range, humidity sensor:: 0 % RH to 100 % RH
Temperature: 10 °C to 30 °C:: ±0.2°C
Temperature: 0 °C to 10 °C:: ±0.4°C
Temperature -10 °C to 0 °C:: ±0.5°C
Temperature: below -10 °C or above 30 °C:: ±1.5°C
Humidity: 10 % RH to 90 % RH:: ±2% RH
Humidity: below 10 % RH or above 90 % RH:: ±4% RH
Momentary values:: Temperature, humidity, status
Historic values:: Average value over the last hour and last day
Weight:: 140 g

Documentation

Data Sheets

Manuals

Software

Accessories

Spareparts

Downloads

For downloads, please visit our support site at: https://support.elvaco.com

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