Elvaco CMa20w Manuale utente

INTRODUCTION

CMa20w is a wireless M-Bus communicating temperature and humidity

sensor for outdoor use.

For a complete description of the product or for information in Swedish,

visit the Elvaco AB website, www.elvaco.com.

OVERVIEW

CMa20w

Outdoor wireless M-Bus temperature and humidity sensor

1. Service

connector

2. LED

3. Push button

4. Sensor pipe

5. Wall mounting

MOUNTING

Mount the product in a weatherproof location to avoid that direct

sunlight or rain affects the sensors. The product should be mounted

straight vertically and horizontally with the sensor pipe (4) downwards.

Use the holes (5) when mounting on wall.

IMPORTANT! To assure correct sealing when assembling the lid, ﬁrst

ﬁxate the lid by pressing on all 4 corners ﬁrmly (see picture to the

right). The two screws are used to secure the lid once pressed into

place, do not use screws to put lid into place!

INSTALLATION

The product can be installed and enabled in two modes. Please advise

your project manager which operation mode is used in your project.

Unencrypted mode: Meter data is sent unencrypted and no encryption

key is needed to decrypt the data.

1. Press and hold button (3) for 5-10 seconds until LED1 (2) ﬂashes

quickly.

2. Release button (3).

Encrypted mode: Meter data is sent in encrypted mode and the

encryption key is needed to decrypt the data.

1. Press and hold button (3) for 10-22 seconds, until LED1 (2) ﬂashes

slowly.

2. Release button (3).

* If the button is released in this mode, the CMa20w will return to inactive

mode. This also applies if the button is pressed down for longer than 25

seconds.

IMPORTANT 1

Make sure that the product is activated by pressing the button (3)

during normal operation. If the product is activated in unencrypted

mode, LED1 will ﬂash quickly 5 times. If the product is activated in

encrypted mode, LED1 will be illuminated for 1 second.

IMPORTANT 2

During the ﬁrst 24 hours after activation it is possible to change

encryption mode between encrypted and unencrypted. See section

“Installation” above.

OPERATION

The product will automatically, after the installation procedure, send

C1 messages every 3rd minute containing sensor data, such as

instantaneous temperature and humidity. The product will also send

product status information, containing age indication of the battery and

other relevant information.

SAFETY

The warranty does not cover damage to the product caused by usage

in any other way than described in this manual. Elvaco AB can not be

liable for personal injury or property damage caused by usage in any

other way than described in this manual.

Release SW1 for

unencrypted mode

LED1 fast ﬂash

Release SW1 for

encrypted mode

LED1 slow ﬂash

6 s 5 s 12 s2 s*

WIRELESS M-BUS

The product is delivered with the radio turned off. The radio must be

manually switched on during the installation procedure. The product will

not be activated until the installation procedure is started.

equacies. Elvaco AB takes no responsibility for damages, liabilities or other losses by using this product. No part of the contents of this manual may

be transmitted or reproduced in any form by any means without the written permission of Elvaco AB. Printed in Sweden.

CMa20w Quick manual A4 English

Document id: 1090092

Version: 6.0

Product Part number Description

CMa20w 1050023 Wireless M-Bus communicating

temperature and humidity sensor

for outdoor use.

ORDERING INFORMATION

CONTACT INFORMATION

Elvaco AB Technical support:

Phone: +46 300 434300

E-mail: support @elvaco.com

Online: www.elvaco.com

TECHNICAL SPECIFICATIONS

Mechanics

Protection class IP65

Dimensions 110x100x52 mm

Weight 140 g

Antenna Wireless M-Bus Internal

Mounting Wall mounted

Electrical

Power supply Battery, 12 years

Environmental

Operating temperature

range

-20 °C to +45 °C

Storage temperature range -40 to +30 °C

Operating humidity 0 to 95 %RH no condensation

Sensor accuracy

Temperature 10 to 30 °C +/- 0.2 °C

Humidity 10 to 90 % RH +/- 2 % RH

Wireless M-Bus

M-Bus standard EN 13757-4:2013, mode C1b

M-Bus commands SND_NR

Values Temperature, humidity, min/max/

average, momentary

RF power 25 mW

Frequency 868.95 MHz

Approvals

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

Factory defaults

Transmit interval 3 minutes

Encryption mode Optional unencrypted/encrypted

(128 bit AES)

Delivery mode Inactive (not transmitting)

Products:

CMeX12s

Products:

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CMeX10

CMeX11

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Prod uctYearo

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David Vonasek, CEO

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

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3100

3000

2100

X40

ARATIONOFCONFO

isissuedunderthesoleresponsi

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

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harmonizationstandardsorothernormativ

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

‐injection)

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D)

MITY

bilityofthemanufacturer:

a,Sweden.

unityharmonizationlegislation:

documents:

MITY

bilityofthemanufacturer:

a,Sweden.

unityharmonizationlegislation:

documents:

MITY

bilityofthemanufacturer:

a,Sweden.

unityharmonizationlegisla tion:

documents:



MITY

bilityofthemanufacturer:

a,Sweden.

unityharmonizationlegislation:

documents:



Elvaco AB, Kabelgatan 2T, S-43437 Kungsbacka, Sweden

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