Vaisala GMW95 Manuale utente

Quick Guide

M211511EN-C

Vaisala HMW90 and GMW90 Series

Transmitters with Digital Output

English

Deutsch

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日本語

中文

PUBLISHED BY

Vaisala Oyj Phone (int.): +358 9 8949 1

P.O. Box 26 Fax: +358 9 8949 2227

FI-00421 Helsinki

Finland

Visit our Internet pages at www.vaisala.com.

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.

ENGLISH

HMW90 and GMW90 Series Digital Models

Measurement type

HMW95/D, HMW90*

Humidity, temperature

GMW95, GMW95D

Carbon dioxide, temperature

GMW95R, GMW95RD,

GMW90*

Carbon dioxide, humidity,

and temperature

Output type

RS-485 (isolated, 1.5 kV)

Output protocols

BACnet MS/TP, Modbus

Supply voltage

18 ... 35 VDC

24 VAC ±20 % 50/60 Hz

Current consumption

(with 120 Ωtermination)

HMW90 series

Average

10 mA at 24 VDC

Maximum

30 mA at 24 VDC

Power consumption

< 0.3 W

GMW90 series

Average

20 mA at 24 VDC

Maximum

50 mA at 24 VDC

Power consumption

< 0.6 W

Dimensions (h × w × d)

132.7 × 81 × 30 mm

Setpoints for CO

LEDs

Green 0 ... 800 ppm

Yellow 800 ... 1200 ppm

Red 1200 ... 5000 ppm

Red (blinking) > 5000 ppm

* Configurable model, see Order Form for options.

Datasheets and user’s guides (in English) are

available on product pages at

www.vaisala.com/hmw90

www.vaisala.com/gmw90.

Product Safety Information

When installing the transmitter, do not touch

exposed contacts on the component board.

When opening or closing the transmitter, avoid

damaging the transmitter electronics with the

two plastic supports on the bottom of the

mounting base.

Wire the transmitter according to the

terminal label on the mounting base.

Terminal layout depends on transmitter

model, so do not mix mounting bases from

different transmitter models.

If you connect more than one transmitter to a

single 24 VAC transformer, always connect the

phase (~) to the +Vs connector in each

transmitter.

The trimmers only turn 135 degrees each way,

less than half a rotation. Do not force the

trimmer past the stopping point.

Transmitter Parts - Outside

Adjustment

trimmers for

measured

parameters

Service port

Locking screw for mounting base

(not included, M3x6 recommended)

Window

for display

Grip

for slide

Display

Locking screw for slide

(not included, M3x6 recommended)

Type label

Gas inlet for

CO2calibration

(GMW models)

CO2level

indicator LEDs

(GMW models)

Holes for

indicator

LEDs

Transmitter Body

HTM10 module

(temperature measurement)

DIP switches for protocol

and serial line settings

HUMICAP 180R sensor

(humidity measurement)

DIP switches for

transmitter address

RS-485 termination jumper

(connects a 120 Ωresistor)

GM10 module

(CO

measurement)

Mounting Base

Terminal label

Orientation arrow

Opening for cable

Place for zip tie

Opening for cable

Label for RS-485 baud rate

DIP switch settings

Screw terminals

Selecting the Location

The conditions at the location should represent well the

area of interest. Do not install the transmitter on the

ceiling. Avoid placing the transmitter near heat and

moisture sources, close to the discharge of the supply

air ducts, and in direct sunlight.

Plan the routing of the cable when selecting the

location. You can bring the cable to the transmitter

from above, or from the center opening of the

mounting base.

When bringing a cable through the wall, note

that the hole may also supply air from outside

the room into the transmitter. This may affect

the measurement readings. For example,

fresh concrete binds CO2and may cause low

readings, especially in new buildings. Seal the

cable opening if necessary.

Opening and Closing

To open, use a screwdriver to push down the tab that

holds the transmitter cover and mounting base

together. Pull the mounting base away from the cover,

starting from the top.

To close, connect the bottom of the transmitter first,

and tilt the top forward to close the tab. Closing the

transmitter starts it up if power is supplied to the screw

terminals.

Installing the Mounting Base

Use the mounting holes to attach the mounting base

securely. Use at least two screws (not included). 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.

34 27

Ø 4.4

33.5

30.5

29.8

59.5

Wiring

When wiring, observe the terminal labels on the

mounting base. Maximum wire size is 2 mm2(AWG14).

The RS-485 line of the transmitter is isolated from the

power supply. A separate ground reference terminal

(

GND

) is provided for the RS-485 connection.

If you are using a shielded cable, you can use the

Shld

terminal to hold the exposed part of the shield. The

Shld terminal is floating (not electrically connected).

D- -VsD+ +Vs

Power supply

18 ... 35 VDC

or 24 VAC ±20%

RS-485

Shld GND

You can bring the cable

to the housing from

above or from

behind (recommended).

If you are wiring a

GMW90 series

transmitter from above,

use a < Ø 5 mm cable,

and route it from the

left side of the

mounting base.

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