Vaisala CARBOCAP GMW80 Series User manual

M211748EN-A
USER'S GUIDE
Vaisala CARBOCAP® Carbon Dioxide and
Temperature Transmitters GMW80 Series

PUBLISHED BY
Vaisala Oyj
Street address: Vanha Nurmijärventie 21, FI-01670 Vantaa, Finland
Mailing address: P.O. Box 26, FI-00421 Helsinki, Finland
Phone: [phone]
Fax: [phone]
Visit our Internet pages at www.vaisala.com.
© Vaisala 2014
No part of this manual may be reproduced, published or publicly displayed in
any form or by any means, electronic or mechanical (including photocopying),
normay its contents be modified, translated, adapted, sold or disclosed to a third
party without prior written permission of the copyright holder. Translated
manuals and translated portions of multilingual documents are based on the
original English versions. In ambiguous cases, the English versions are
applicable, not the translations.
The contents of this manual are subject to change without prior notice.
This manual does not create any legally binding obligations for Vaisala towards
customers or end users. All legally binding obligations and agreements are
included exclusively in the applicable supply contract orthe General Conditions
of Sale and General Conditions of Service of Vaisala.
2

Table of Contents
1 General Information 2
About This Document 2
Documentation Conventions 2
Safety 3
ESD Protection 3
Recycling 3
Regulatory Compliances 4
Trademarks 4
Software License 4
Warranty 4
2 Product Overview 5
Introduction to GMW80 Series 5
Transmitter Models 5
Transmitter Parts 6
Temperature Setpoint Potentiometer 8
Analog Output Overrange Behavior 9
3 Installation 10
Selecting Location 10
Opening and Closing the Transmitter 11
Installing the Mounting Base 12
Wiring 13
Wiring GMW86P 14
Wiring GMW86PT 14
4 Maintenance 15
Cleaning 15
Replacing the CO2 Measurement Module (GM10) 16
5 Troubleshooting 17
Problem Situations 17
Error State 18
Technical Support 19
Product Returns 19
6 Technical Data 20
Specifications 20
Dimensions 22
Spare Parts and Accessories 23
1

1GENERAL INFORMATION
About This Document
This document provides information for installing, operating, and maintaining
GMW80 series transmitters.
Document Code Description
M211748EN-A November 2014. First version.
Table 1 Version Information
Document Code Description
M211660EN GM10 Quick Guide
Table 2 Related Documents
Documentation Conventions
Warnings alert you to a serious hazard. If you do not read and
follow instructions very carefully at this point, there is a risk of
injury or even death.
Cautions warn you of a potential hazard. If you do not read and
follow instructions carefully at this point, the product could be
damaged or important data could be lost.
Notes highlight important information on using the product.
2
1 General Information

Safety
The GMW80 series transmitter delivered to you has been tested for safety and
approved as shipped from the factory. Note the following precautions:
Connect only de-energized wires.
Do not modify the unit. Improper modification can damage the
product or lead to malfunction.
ESD Protection
Electrostatic Discharge (ESD) can cause immediate or latent damage to
electronic circuits. Vaisala products are adequately protected against ESD for
their intended use. It is possible to damage the product, however, by delivering
electrostatic discharges when touching, removing, or inserting any objects
inside the equipment housing.
To make sure you are not delivering high static voltages yourself, avoid touching
exposed component contacts during installation and maintenance.
Recycling
Recycle all applicable material.
Dispose of the unit according to statutory regulations. Do not
dispose of with regular household refuse.
3
1 General Information

Regulatory Compliances
GMW80 series is in conformity with the following directives:
nRoHS-Directive
nEMC-Directive
The conformity is declared with using the following standards:
nEN50581: Technical documentation for the assessment of
electrical and electronic products with respect to the restriction
of hazardous substances.
nEN 61326-1: Electrical equipment for measurement, control,
and laboratory use – EMC requirements – Immunity test
requirements for equipment intended to be used in an
industrial electromagnetic environment.
nEN 550022: Information technology equipment – Radio
disturbance characteristics – Limits and methods of
measurement.
Trademarks
CARBOCAP®is a registered trademark of Vaisala Oyj.
All other trademarks referred to are the property of their respective owners.
Software License
This product contains software developed by Vaisala. Use of the software is
governed by license terms and conditions included in the applicable supply
contract or, in the absence of separate license terms and conditions, by the
General License Conditions of Vaisala Group.
Warranty
Visit our Internet pages for more information and our standard warranty terms
and conditions: www.vaisala.com/warranty.
Please observe that any such warranty may not be valid in case of damage due
to normal wear and tear, exceptional operating conditions, negligent handling or
installation, or unauthorized modifications. Please see the applicable supply
contract or Conditions of Sale for details of the warranty for each product.
4
1 General Information

2PRODUCT OVERVIEW
Introduction to GMW80 Series
The Vaisala GMW80 series CARBOCAP® carbon dioxide and temperature
transmitters are wall-mount transmitters designed to fulfill the needs for CO2
measurements in standard demand controlled ventilation applications. The CO2
measurement is based on a new generation CARBOCAP® sensor, which uses
a novel, silicon-based microchip emitter instead of an incandescent light bulb.
The internal reference in the CO2sensor guarantees the best stability and
operation also in constantly occupied buildings without frequent readjustments.
All GMW80 series transmitters measure carbon dioxide (CO2) and temperature
(T). GMW86PT includes a temperature set-point potentiometer.
The CARBOCAP® sensors give correct CO2measurements immediately when
powered on. As they have a built-in reference measurement they do not need a
lengthy learning phase before the measured values are correct. Proper
operation can be verified immediately after snapping on the device cover.
Transmitter Models
Model CO2Output(s) T Output T Setpoint Potentiometer
GMW80P 1 x 4 ... 20 mA
1 x 0 ... 10 V
Pt1000 (passive) No
GMW80PT 1 x 4 ... 20 mA
1 x 0 ... 10 V
Pt1000 (passive) Yes
Table 3 GMW80 Series Transmitters
5
2 Product Overview

Transmitter Parts
Figure 1 GMW80 Series Transmitter Parts
1 = Opening tab.
2 = Screw terminals. The wiring information is marked on the mounting base
next to the terminals.
3 = Barrier to prevent the cable from being routed below the GM10
measurement module. The area to avoid is marked No cable on the
mounting base.
4 = Orientation arrow. Should point up after the mounting base has been
installed.
5 = Opening for cable when wiring from behind(recommended).
6 = Place for zip tie (optional, for cable strain relief).
7 = Breakaway tab for routing the cable from below.
8 = Locking screw. Supplied with the transmitter.
9 = Breakaway tab for routing the cable from the top.
10 = Setpoint wheel (model GMW86PT only).
6
2 Product Overview

Figure 2 GMW80 Series Component Board Parts
1 = Pins that connect the transmitter cover to the screw terminals when the
transmitter cover is in place.
2 = Pt1000 temperature sensor.
3 = GM10 carbon dioxide measurement module.
4 = Potentiometer component (model GMW86PTonly).
7
2 Product Overview

Temperature Setpoint Potentiometer
Some GMW80 series transmitter models include a temperature setpoint function
that gives the occupant of the monitored space a way to adjust the temperature.
The setpoint function is implemented using a passive 10 kΩ potentiometer
(variable resistor) that is mechanically actuated by a setpoint wheel on the lower
part of the transmitter.
The transmitter is simply marked with plus "+" and minus "-" signs to indicate the
direction of adjustment. The rotation of the wheel is mechanically limited to
approximately 180degrees, so in actual use the resistance range of the
potentiometer varies between approximately 2.1 kΩ and 7.2 kΩ. The
corresponding temperature change is decided on the building controller level.
Setpoint wheel at midpoint:
~4.65kΩresistance.
Setpoint wheel at minimum:
~2.1kΩresistance.
Setpoint wheel at maximum:
~7.2kΩresistance.
8
2 Product Overview