Vaisala GMW83A, GMW83RP, GMW86PT, GMW83T, GMW83DRP User Manual

USER'S GUIDE

Vaisala CARBOCAP® Carbon Dioxide,

Humidity and Temperature Transmitters

GMW80 Series

M211748EN-C

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 2015

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.

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.

2

Table of Contents

1 About This Document 3

Documentation Conventions 3
Trademarks 4

2 Product Overview 5

Introduction to GMW80 Series 5
Transmitter Models 6
Transmitter Parts 7
Display 9

Startup Screens 9
Measurement Screen 10

Error Messages 10
CO2 Level Indicator LEDs 11
Temperature Setpoint Potentiometer 12
Analog Output Overrange Behavior 13
Safety 15
Regulatory Compliances 16
Patent Notice 16

3 Installation 17

Selecting Location 17
Opening and Closing the Transmitter 19
Installing the Mounting Base 20
Wiring 21

Wiring GMW83, GMW83D and GMW83A 22

Wiring GMW83T 23

Wiring GMW83RP and GMW83DRP 23

Wiring GMW86P 24

Wiring GMW86PT 25

4 Maintenance 26

Cleaning 26
Replacing the CO2 Measurement Module (GM10) 27
Replacing the INTERCAP® Humidity Sensor 28

5 Troubleshooting 29

Problem Situations 29
Error State 33

6 Technical Data 34

Specifications 34
Dimensions 37

1

Spare Parts and Accessories 38
Technical Support 39
Warranty 39
Recycling 39

2

1 About This Document

1 ABOUT THIS DOCUMENT

This document provides information for installing, operating, and maintaining
GMW80 series transmitters.

Table 1 Document Versions

Docu mentCode Date Description of Changes

M211748EN-C June 2015

M211748EN-B May 2015

M211748EN-A November2014 First version.

Table 2 Related Manuals

Docu mentCode Name

M211660EN GM10 Quick Guide

Updated wiring instructions for GMW83
product models.

n Added new product models:GMW83,

GMW83D, GMW83A, GMW83T,
GMW83RP, GMW83DRP.

n Updated Analog Output Overrange

Behavior on page13.

n Updated Problem Situationson page29.

Documentation Conventions

Warning alerts 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.

Caution warns 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.

Note highlights important information on using the product.

3

1 About This Document

Trademarks

CARBOCAP®and INTERCAP®are registered trademarks of Vaisala Oyj.
Third-party products and names may be trademarks of their respective owners.

4

2 Product Overview

2 PRODUCT OVERVIEW

Introduction to GMW80 Series

Vaisala GMW80 series CARBOCAP® carbon dioxide, humidity, and
temperature transmitters are wall-mount transmitters designed to fulfill the needs
for CO2measurements in standard demand controlled ventilation applications.
The CO2measurement 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.

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.

All GMW80 series transmitters measure carbon dioxide (CO2) and temperature
(T), some models also include relative humidity (RH)measurement as well.
Humidity measurement utilizes the Vaisala INTERCAP® sensor.

Transmitter models and their features are listed in Transmitter Models on the

next page.

5

2 Product Overview

Transmitter Models

Table 3 GMW80 Series Transmitters

Model
Name

GMW86P 4...20mA

GMW86PT 4 ... 20 mA

GMW83 0 ... 10 V 0 ... 10 V No No No No

GMW83D 0 ... 10 V 0 ... 10 V No Yes No No

GMW83A 0 ... 10 V 0 ... 10 V No No Yes No

GMW83T 0 ... 10 V 0 ... 10 V No No No Yes

GMW83RP 0 ... 10 V 0 ... 10 V

GMW83DRP 0 ... 10 V 0 ... 10 V

Letters at the end of the model name stand for the following features:

P =Passive temperature measurement
T =Temperature setpoint potentiometer
D = Display
A = CO2indicator LEDs
R =Humidity measurement

CO

2

OutputTOutput

Pt1000

0...10V

0 ... 10 V

(passive)

Pt1000
(passive)

Pt1000
(passive)

Pt1000
(passive)

RH
Output

No No No No

No No No Yes

0...10V No No No

0...10V Yes No No

Display

CO

2

LEDs

T Setp oint
Potentiometer

6

Transmitter Parts

12

10

11

8

9

4

5

761

2

3

2 Product Overview

Figure 1 GMW80 Seri es T ransmitter 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 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 above.
10 = CO2level indicator LEDs (on models with letter A). See CO2 Level Indicator

LEDs on page11.

11 = Display (on models with letter D). See Display on page9.
12 = Setpoint wheel (on models with letter T). See Temperature Setpoint

Potentiometer on page12.

7

142

356

2 Product Overview

Figure 2 GMW80 Seri es Component Board Parts

1 = Pins that connect the transmitter cover to the screw terminals when the

transmitter cover is in place.
2 = Vaisala INTERCAP® humidity sensor (on models with letter R).
3 = Pt1000 temperature sensor for passive temperature measurement

(onmodels with letter P)
4 = Active temperature sensor.
5 = GM10 carbon dioxide measurement module.
6 = Potentiometer component (on models with letter T).

8

2 Product Overview

Display

Startup Screens

When a GMW80 series transmitter with a display is powered on, it shows a
sequence of information screens. The screens are shown for a few seconds
each.

Figure 3 Example Startup Screens

The first screen shows the following information:

n Transmitter model, software version, and serial number.

n Serial number of the connected GM10 CO

module is disconnected, no serial number is shown.

n Transmitter status:OKor ERROR. If the status is ERROR, the cause of the

error will be shown on the measurement screen after the startup is
completed.

The following screen(s) show the configuration of the active analog outputs:

n Output type (for example, 0 ... 10 V).

n Output parameter and unit (for example, CO

n Output scaling (for example, 0 ... 2000 ppm).

measurement module. If the

2

(ppm)).

2

9

2 Product Overview

Measurement Screen

After the startup screens the transmitter shows the measurement screen. It
shows the measured parameters and an air quality indicator based on the
current CO2level.

n Good air quality:0 ... 800 ppm CO

n Fair air quality: 800 ... 1200 ppm CO

n Poor air quality: >1200 ppm CO

Figure 4 Example Measurement Screens

2

2

2

Error Messages

If there is a problem with measurement, affected readings are replaced with
stars. The alarm indicator and an error message will also appear on the screen.
If more than one error is active, the display will cycle through the errors, showing
each error for a few seconds.

For a list of possible errors and their causes, see Problem Situations on

page29.

Figure 5 Example Err or Message on Display

10

2 Product Overview

CO2Level Indicator LEDs

Transmitter model GMW83Ahas indicator LEDs for the measured CO2level on
the front cover. The LEDs provide a visual indication of the measured CO2level
to the occupant of the monitored space.

The LEDs are lit as follows:

n Red LED (top): lit between 1200 ... 2000 ppm CO

n Yellow LED (center):lit between 800 ... 1200 ppm CO

n Green LED (bottom):lit between 0 ... 800 ppm CO

, blinking>2000ppmCO2.

2

.

2

.

2

Figure 6 CO2Level Ind icator LEDs on Model GMW83A

11

2 Product Overview

Temperature Setpoint Potentiometer

GMW80 series transmitter models with the letter Tin their model name have
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 linear 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.

Minimum: ~2.1kΩresistance.

Midpoint: ~4.65kΩresistance.

12

Maximum: ~7.2kΩresistance.

20.0

0

0 2000 6000

Output clipping limit

Error level

CO2 (ppm)

-100

Output

(mA)

Scaled output range:
4 ... 20 mA
0 ... 2000 ppm

3.6

4.0

2 Product Overview

Analog Output Overrange Behavior

Analog outputs of the GMW80 series transmitters have a defined behavior when
the values measured by the transmitter are outside the scaled analog output
range.

n At the top end of the output range, the output is clipped to the maximum value

of the output. This means that even if the measured parameter rises, the
value does not change anymore.

n At the low end of the output range, the output stays at the minimum value

when the measured parameter falls below the scaled range.

n The output is eventually set to the error state if the measured parameter is far

enough from the scaled output range. The exact limits for this behavior are
parameter dependent;see the figures below.

For more information on the error state, see Error State on page33.

Figure 7 Overrange Behavior of CO2Measurement with 4.. . 20mA Output

Negative ppm values cannot physically exist but the behavior of the output is
defined to account for cases where a low CO2reading, combined with sensor
drift, could cause a negative result.

13

11.0

10.0

0

0 2000 6000

Output clipping limit

Error level

CO2 (ppm)

-100

Output

(V)

Scaled output range:
0 ... 10 V
0 ... 2000 ppm

11.0

10.0

0

0 50 52.5

Output clipping limit

Error level

T (º

C)

-2.5

Output

(V)

Scaled output
range:
0 ... 10 V
0 ... 50 ºC

2 Product Overview

Figure 8 Overrange Behavior of CO2Measurement with 0.. . 10 V Output.

Figure 9 Overrange Behavior of Active Temperature Measurement

Passive temperature measurement (reading the Pt1000 resistor) is not affected
by the overrange behavior or the error state.

14

11.0

10.0

0

0 100 11 0

Output clipping limit

Error level

%RH

-5

Output

(V)

Scaled output
range:
0 ... 10 V
0 ... 100 %RH

2 Product Overview

Figure 10 Overrange Behavior of Relative Humidity Measurement

The transmitter may measure humidities in excess of 100%RH if the sensor
element becomes wet due to condensation.

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.

Electrostatic Discharge (ESD) can cause immediate or latent
damage to electronic circuits. Avoid touching exposed
component contacts during installation and maintenance.

15

2 Product Overview

Regulatory Compliances

GMW80 series is in conformity with the following directives:

n RoHS-Directive

n EMC-Directive

The conformity is declared with using the following standards:

n EN50581: Technical documentation for the assessment of

electrical and electronic products with respect to the restriction
of hazardous substances.

n EN 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.

n EN 550022: Information technology equipment – Radio

disturbance characteristics – Limits and methods of
measurement.

Patent Notice

The GMW80 series is protected by the following patents and their corresponding
national rights:

Table 4 Appli cable Patents

Patent Issued By Patent Number

United States Patent and Tr ademark Office US 5,827,438

US 6,177,673

European Patent Office EP0776023

EP0922972

German Patent and T rade Mark Office 69615635

Japan Patent Office 4263285

Finnish Patent Office 112005

105598

16

3 I nstallation

3 INSTALLATION

Selecting Location

Select a location that represents well the area of interest. Interior walls and
columns are typically suitable locations. The installation height should be

1.2...1.8 m (4 ... 6 ft).

Figure 11 Examples of Good Installation Locations

Seal the cable opening when bringing a cable through the wall.
The hole will supply air from outside the room into the transmitter
and affect the measurement readings. For example, fresh
concrete binds CO2and may cause low readings, especially in
new buildings.

17

3 I nstallation

Avoid installing in the following locations:

n Near doors or windows.

n Near heat and moisture sources.

n In direct sunlight.

n In locations that are blocked by furniture.

n Close to the discharge of the supply air ducts.

n On the floor or the ceiling.

n On points that experience excessive vibration.

Figure 12 Examples of Unsuitable I nstallatio n Lo cations

18

3 I nstallation

Opening and Closing the Transmitter

GMW80 series transmitters are delivered from the factory with a pull tab that
makes it easy to open the transmitter for installation.

To open the transmitter after it has been installed:

1. Loosen the locking screw if it has been installed.

2. Use a flat screwdriver to push down the tab that holds the transmitter cover
and mounting base together, and pull the top of the transmitter cover away
from the mounting base.

Be careful when opening the transmitter:

n Pushing down too hard can break off the opening tab.

n Inserting the screwdriver too far into the transmitter enclosure

may damage transmitter components.

To close the transmitter:

1. Align the bottom of the transmitter cover with the bottom of the mounting
base.

2. Tilt the top of the transmitter cover forward until the tab catches with an
audible snap. Note that closing the transmitter starts it up if power is
supplied to the screw terminals.

3. Pull on the cover gently to make sure it is properly closed and not loose.

4. Attach the locking screw if desired.

19

NO

CABLES

UP

3 I nstallation

Installing the Mounting Base

The transmitters are designed to be installed on a mounting box or directly to a
wall surface.

Use the mounting holes to attach the mounting base securely. Use at least two
screws (not included). The mounting holes are suitable for the most common
European, American, and Asian mounting boxes. The mounting base can be
twisted on to pre-mounted screws.

Figure 13 Installing the Mounti ng Base

Mounting bases are tailored to the individual transmitter at the
factory. If you attach several mounting bases before connecting
the transmitters, store the transmitters in their original shipping
boxes, so that you can match the serial number on the mounting
base to the serial number on the shipping box.

The arrow on the mounting base must point straight up after
installation. Proper orientation is important: air must flow through
the vents on the bottom and top.

20

NO

CABLES

UP

3 I nstallation

Wiring

Connect the wiring to the screw terminals on the mounting base. The terminal
assignments are marked next to the screw terminals. Do not connect wiring to
unmarked terminals.

Maximum wire size is 2mm2(AWG14). Route the cable through the hole in the
mounting base if possible.

Figure 14 Routing the Cable from Behi nd

Connect only de-energized wires.

Do not route the cable through the area marked NOCABLESon
the mounting base. That space is taken up by the CO
measurement module when the transmitter cover is attached.

2

21

+

-

18 ... 35 VDC

or 20 ... 30 VAC

Power supply

Controller

Analog signal ground

T signal analog input
(0 ... 10 V)

VS

T

CO2

0...10 V

0...10 V

GND

GMW83
GMW83A
GMW83D

CO2 signal analog input
(0 ... 10 V)

3 I nstallation

You can also bring the cable to the housing from above or below, but you have
to break off the small plastic tab that covers the hole on top or bottom of the
housing.

Figure 15 Locations o f the Breakaway tabs

After completing the wiring, connect the transmitter body over the mounting
base. Note that mounting bases are model-specific.

Wiring GMW83, GMW83D and GMW83A

Figure 16 Wiri ng for GMW83,GMW83D, and GMW83A

22

Wiring GMW83T

Controller

Analog signal ground

T signal analog input

(0 ... 10 V)

CO2 signal analog input

(0 ... 10 V)

GMW83T

VS

T

CO2

0...10 V

0...10 V

GND

Potentiometer

input

(2.1 ... 7.2 kΩ)

+

-

18 ... 35 VDC

or 20 ... 30 VAC

Power supply

Controller

Analog signal ground

T signal analog input

(0 ... 10 V)

RH signal analog input

(0 ... 10 V)

Pt1000

input

VS

T

RH

0...10 V

0...10 V

GND

0...10 V

GMW83RP
GMW83DRP

t+

CO2

CO2 signal analog input

(0 ... 10 V)

+

-

18 ... 35 VDC

or 20 ... 30 VAC

Power supply

Figure 17 Wiri ng for GMW83T

Wiring GMW83RP and GMW83DRP

3 I nstallation

Figure 18 Wiri ng for GMW83RP and GMW83DRP

23

VS

CO2

CO2

CO2

4...20 mAt+0...10 V

GMW86P

+

-

18 ... 35 VDC

or 20 ... 30 VAC

Power supply

Controller

Pt1000

input

CO2 signal input

4 ... 20 mA

0 ... 10 V

Common

3 I nstallation

Wiring GMW86P

GMW86PThas two outputs for the CO2signal: 4...20mA and 0...10V. You can
use both outputs simultaneously but typically only one of them is needed. Note
that they share a common minus terminal.

Figure 19 Wiri ng for GMW86P

24

VS

CO2

CO2

CO2

4...20 mA

t+

0...10 V

GMW86PT

Controller

Potentiometer

input

(2.1 ... 7.2 kΩ)

Pt1000

input

+

-

18 ... 35 VDC

or 20 ... 30 VAC

Power supply

CO2 signal input

4 ... 20 mA

0 ... 10 V

Common

3 I nstallation

Wiring GMW86PT

GMW86PThas two outputs for the CO2signal: 4...20mA and 0...10V. You can
use both outputs simultaneously but typically only one of them is needed. Note
that they share a common minus terminal.

Figure 20 Wiri ng for GMW86PT

25

4 Maintenance

4 MAINTENANCE

Cleaning

The body of the transmitter can be cleaned by wiping with a moistened lint-free
cloth. Do not use cleaning agents or solvents, or blow pressurized air into the
transmitter housing.

If you suspect the CO2measurement module is dirty, do not
attempt to open it. Instead, replace it with a new part. For order
codes of spare parts, see Spare Parts and Accessories on

page38.

26

4 Maintenance

Replacing the CO2Measurement Module (GM10)

n GM10 spare part module (Vaisala order code GM10SP80)

n Flat head screwdriver (for opening the transmitter)

1. Disconnect the transmitter body from the mounting base.

2. Locate the GM10 module on the transmitter. The module is a separate
component board with a golden cuvette that contains the CARBOCAP®
sensor. The module is connected to the main transmitter board with a
connector, and held in place by a plastic clip on the other side. See Figure 2

on page8.

3. Disconnect the module by carefully lifting the module from the connector
side.

Figure 21 Disconnecting the GM10 Module

4. Take the new GM10 module and place it in the hole for the module so that
the plastic clip meets the component board. Then lower the connector end
of the module.

5. Push down on the module to secure the connector.

6. Reconnect the transmitter to the mounting base.

7. Check the output of the transmitter (or the display if included on the model)
to verify that the CO2measurement is working normally and is not in the
error state. For more information on the error state, see Error State on

page33.

27

4 Maintenance

Replacing the INTERCAP® Humidity Sensor

n INTERCAP® sensor (Vaisala order code 15778HM)

n Flat head screwdriver (for opening the transmitter)

To avoid contaminating or damaging the sensor:

n Handle the sensor by its plastic frame.

n Do not touch the sensor surface in the middle.

n Wear lint-free ESDgloves.

1. Disconnect the transmitter body from the mounting base.

2. Locate the INTERCAP® sensor on the component board. See Figure 2 on

page8.

3. Disconnect the old INTERCAP® sensor by pulling it straight out of its
socket.

4. Insert the new INTERCAP® sensor in the socket.

5. Reconnect the transmitter to the mounting base.

6. Check the output of the transmitter (or the display if included on the model)
to verify that the humidity measurement is working normally and the
transmitter is not in the error state. For more information on the error state,
see Error State on page33.

28

5 TROUBLESHOOTING

Problem Situations

Table 5 Possibl e Probl em Situations and their Remedies

Problem Possible Cause Remedy

Analog output reading is
unchanging and appears
incorrect.

Temper ature reading is too
high.

CO2reading is too high. Source of CO2near the

Transmitter has set the
analog output to the error
level(3.6 mA or 11 V)
because the transmitter is in
the error state.

Transmitter is installedin an
unsuitable location, for
example, near a heat source
or in sunlight.

Transmitter installed in
improper orientation.

Unsuitable oper ating
environment.

transmitter.

CO2measurement module
must be replaced.

Determine what has caused
the error state and remove
the cause.

For a description of the er ror
state and its possible causes,
see Error State on page33.

Relocate transmitter. See

Selecting Location on
page17

Reinstalltransmitter with the
arrow on the mounting base
pointing up.

Verify that the operating
environment is within
specified operating limits.

n Use a portable

instrument to verify the
CO2reading at the
installation location. Avoid
breathing on the
instruments while
checking.

n Check for sources of CO

in the measured area,
such as people working
right next to the
transmitter.

Replacing the CO2

See

Measurement Module
(GM10) on page27

5 T roubleshooting

.

2

.

29

5 T roubleshooting

Problem Possible Cause Remedy

CO2reading is too low. The measured area contains

materials that bind CO

2

(such as fresh concrete),
producing a low-CO

2

environment.

n Use a portable

instrument to verify the
CO2reading at the
installation location. Avoid
breathing on the
instruments while
checking.

n Check if the transmitter is

installed on a mounting
box that suppliesair from
inside the wall into the
transmitter. If yes, plug
the hole. See Selecting

Location on page17.

CO2measurement module
must be replaced.

Replacing the CO2

See

Measurement Module
(GM10) on page27

.

30

Problem Possible Cause Remedy

Error Messages on Display

Error text on display:
CO2-SENSOR

GM10 module disconnected. Open the tr ansmitter and

checkif the GM10 module is
installed securely. See

Figure 2 on page8.

n If the module is loose or

entirely disconnected,
reinstallit as instructed in

Replacing the CO2
Measurement Module
(GM10) on page27.

n If the GM10 module

appears to be installed
but the problem persists,
disconnect and reconnect
the module carefully.

CO2measurement module
must be replaced.

Replace the GM10 module
with a verified working
module.

CO2reading over 6000 ppm.

n Use a portable

instrument to verify the
CO2reading at the
installation location. Avoid
breathing on the
instruments while
checking.

n Check for sources of CO

in the measured area,
such as people working
right next to the
transmitter.

5 T roubleshooting

2

31

5 T roubleshooting

Problem Possible Cause Remedy

Error text on display:
RH-SENSOR

Humidity sensor
disconnected.

Open the transmitter and
checkthe condition of the
humidity sensor. See Figure

2 on page8.

Humidity sensor damaged.

n If the sensor is missing or

damaged, replace it. See

Replacing the
INTERCAP® Humidity
Sensor on page28.

Humidity sensor wet.

n If the sensor is wet, wait

for it to dry or dry it very
gently with clean
instrument air.

Error text on display:
T-SENSOR

Temper ature reading is
outside the scaled output
range.

n Verify the ambient

temperature with a
portable instrument.

n See Analog Output

Overrange Behavior on
page13.

Temper ature sensor
damaged.

Open the transmitter and
checkif the active
temperature sensor on the
component board has been
damaged. See Figure 2 on

page8.

Error text on display:
INTERNAL

Problem with transmitter
software.

n Restart the tr ansmitter.

n If the error per sists,

contact Vaisala helpdesk.
See Technical Support

on page39.

32

5 T roubleshooting

Error State

If the transmitter detects a serious hardware or software error, or the measured
reading is well outside the scaled range, the analog outputs are set into a
defined error level instead of the measured result. The error level depends on
the output type:

n For 4 ... 20 mA output, the error level is 3.6 mA.

n For 0 ... 10 V output, the error level is 11 V.

If the cause of the error is removed, the transmitter resumes normal operation of
analog outputs. Some errors may require a reset of the transmitter to recover.

If the error state is caused by a measurement result being well outside the
scaled output range, only affected channels are set to the error state. For more
information, see Analog Output Overrange Behavior on page13.

Examples of situations that can cause the error state:

n The transmitter measures over 6000 ppm CO

n The CO

measurement module (GM10) is disconnected.

2

.

2

33

6 T echnical Data

6 TECHNICAL DATA

Specifications

Table 6 Performance

Property Sp ecification

Carbon dioxide

Measurement range 0 ... 2000 ppm

Accuracyacross temperature range

+20 ... +30 °C

+10 ... +20 °C, +30 ... +40 °C

+0 ... +10 °C, +40 ... 50 °C

Stability in typicalHVAC applications ±(15 ppm + 2% of reading)

Warmup time

Response time ( 63 %) 60 s

Carbon dioxide sensor Vaisala CARBOCAP® GM10

Temper ature

Measurement range 0 ... 50 °C

Temper ature sensor

on P models Pt1000 RTD ClassF0.15

for analog outputs Digital temperatur e sensor

Accuracy(GMW83)

+10 ... +30 °C ±0.5 °C

+0 ... +10 °C, +30 ... 50 °C ±1 °C

Humidity

Measurement range 0 ... 95 %RH

Accuracy

Temper ature range +10 ... +30 °C

0 ... 80 %RH

80 ... 95 %RH

±(30 ppm +3 % of reading)

±(35 ppm +3.7 % of reading)

±(40 ppm +4.8 % of reading)

overfiveyears

1 min

10 min for full specification

IEC60751

±3%RH

±5%RH

34

6 T echnical Data

Property Sp ecification

Temper ature range 0 ... +10 °C, +30 ... +50 °C

0 ... 95%RH ±7%RH

Stability in typicalHVACapplications ±2 %RH over 2 years

Product lifetime >15 years

Table 7 Operating Environment

Property Sp ecification

Operating temperature range 0 ... +50 °C (+32 ... 122 °F)

Operating humidity range

0 ... 95 %RH

Dewpoint <30 °C (+86 °F)

Storage temperature range

Displaymodels

-40 ... +70°C (-40 ...158°F)

-30 ... +70°C (-22 ...158°F)

Electromagnetic compliance EN61326-1,

IndustrialEnvironment

Table 8 Mechani cs

Property Sp ecification

IP class IP30

Housing material ABS/PC UL-V0 approved

Housing color White (RAL9003)

Output connector

Screw terminal

Max wire size 2 mm2(AWG14)

Weight

Plain and LEDversion

Setpoint version

Displayversion

114 g

120 g

124 g

35

6 T echnical Data

Table 9 In puts and Outputs

Property Sp ecification

Supply voltage

18 ... 35 VDC

24 VAC ±20 % 50/60 Hz

Max current consumption at 18 VDC

45 mA

Max power consumption at 30 VAC

GMW83 models

GMW86 models

Outputs

0.7 W

1 W

4 ... 20 mA and/or 0 ... 10V

See Table 3 on page6.

Curr ent loop resistance (4 ... 20mA) 0 ... 600 Ω

Voltage output load resistance 10 kΩ min.

CO2output scale 0 ... 2000 ppm

Temper ature output scale 0 ... 50 °C

Humidity output scale 0 ... 100 %RH

Passive temperature sensor (P models) Pt1000 RTD

Temper ature setpoint (T models) 10 KΩ potentiometer

CO2indicator LED levels (A model)

flashingred

red

yellow

green

>2000 ppm

1200 ... 2000 ppm

800 ... 1200 ppm

<800 ppm

36

Dimensions

127.3

81.1

25.9

60

60.3

60.3

R2.2

85

81.1

25.9

60.3

60.3

60

R2.2

85

All dimensions are in millimeters (mm).

Figure 22 Dimension s for GMW86P, GMW83, GMW83A, and GMW83RP

6 T echnical Data

Figure 23 Dimension s for GMW86PT and GMW83T

37

127.3

81.1

25.9

60

60.3

60.3

R2.2

85

6 T echnical Data

Figure 24 Dimension s for GMW83D and GMW83DRP

Spare Parts and Accessories

Information on spare parts, accessories, and calibration products
isavailable online at www.vaisala.com and store.vaisala.com.

Table 10 Spare Parts and Accessories

Item Order Code

CO2module GM10SP80

INTERCAP® sensor 15778HM

38

6 T echnical Data

Technical Support

For technical questions, contact the Vaisala technical support by e-mail at

[e-mail]. Provide at least the following supporting information:

n Name and model of the product in question

n Serial number of the product

n Name and location of the installation site

n Name and contact information of a technically competent person who can

provide further information on the problem.

For contact information of Vaisala Service Centers, see

www.vaisala.com/servicecenters.

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.

Recycling

Recycle all applicable material.

Dispose of the unit according to statutory regulations. Do not
dispose of with regular household refuse.

39

www.vaisala.com

*M211748EN*