Vaisala hmdw110 series User manual

M211726EN-A
USER'S GUIDE
Vaisala HMDW110 Series Humidity and
Temperature Transmitters

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.

Table of Contents
1 General Information 3
About This Document 3
Documentation Conventions 3
Safety 4
ESD Protection 4
Recycling 4
Trademarks 4
Software License 5
Warranty 5
2 Product Overview 6
HMDW110 Series Overview 6
Output Parameters Explained 7
HMD110/112 Parts 8
HMW110/112 Parts 9
HMS110/112 Parts 10
Component Board 11
Analog Output Overrange Behavior 12
3 Installation 13
Selecting Location 13
HMD110/112 Installation 14
HMW110/112 Installation 16
HMS110/112 Installation 17
Wiring HMDW110 19
Wiring Both Current Loops With a Single Power Supply 20
HMDW110 Power Supply Requirements 20
Wiring HMDW110 with RDP100 21
4 Service Port 22
Connecting to the Service Port 22
Terminal Application Settings 23
Serial Commands 24
Device Information and Status 25
Serial Line Output and Communication 28
Measurement Output 28
Measurement Output Format 29
Serial Line Communication 31
Analog output 33
Calibration and Adjustment Commands 36
Other Commands 39
1

5 Maintenance 41
Cleaning 41
Calibration and Adjustment 41
Adjustment Types 42
Adjustment Points 42
Calibration and Adjustment Using a Hand-Held Meter and a
Reference Probe 43
One-Point Humidity Calibration and Adjustment Using a Hand-Held
Meter and HMK15 Humidity Calibrator 45
Two-Point Humidity Calibration and Adjustment using a computer
and a HMK15 Humidity Calibrator 46
Two-Point Temperature Calibration and Adjustment using a
Computer 49
Replacing the HUMICAP®Sensor on HMD110/112 and
HMW110/112 51
Replacing the HUMICAP®Sensor on HMS110/112 52
5 Troubleshooting 54
Error Messages 54
Technical Support 55
Product returns 55
6 Technical Data 56
Specifications 56
Dimensions 58
Spare Parts and Accessories 59
2

1GENERAL INFORMATION
About This Document
This document provides information for installing, operating, and maintaining
HMDW110 series transmitters.
Document Code Description
M211726EN-A This document. July 2014. First version.
Table 1 Version Information
Document Code Description
M211692EN HMDW110 Series Quick Guide
M210297EN HM70 User's Guide
M210185EN HMK15 User's Guide
M211691EN RDP100 User's 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.
3
1 General Information

Safety
The HMDW110 series transmitter delivered to you has been tested for safety
and approved as shipped from the factory. Note the following precautions:
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.
Trademarks
HUMICAP®is a registered trademark of Vaisala Oyj.
Windows®is a registered trademark of Microsoft Corporation.
All other trademarks referred to are the property of their respective owners.
4
1 General Information

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.
5
1 General Information

2PRODUCT OVERVIEW
HMDW110 Series Overview
HMDW110 series transmitters are accurate humidity and temperature
transmitters for measurements in HVAC and cleanroom applications. The series
consists of the following models:
nHMD110/112 models for installation in ventilation ducts
nHMW110/112 models for wall installation
nHMS110/112 models for outdoor use
All models are loop-powered, with 2-wire current outputs for humidity and
temperature. HMD112, HMW112, and HMS112 are standard models. HMD110,
HMW110, and HMS110 are factory configurable models that are delivered with
customer specific output settings, including calculated humidity parameters and
special scaling of outputs.
HMDW110 series transmitters can be connected to Vaisala’s RDP100 panel
display for real-time viewing of the measurements. HMDW110 series can also
supply the operating power to the display using only the loop power from the
outputs.
6
2 Product Overview

Output Parameters Explained
HMDW110 series transmitters offer several output parameters. Relative humidity
(RH) and temperature (T) are the measured parameters, the others are
calculated based on RH and T.
Parameter Symbol Units Description
Temperature T °C
°F
Temperature in Celsius or Fahrenheit scale.
Relative
humidity
RH % Ratio of the partial pressure of water vapor in the air to
the saturation vapor pressure of air at current
temperature.
Dewpoint Td/f °C
°F
Temperature at which the water vapor in the air will
condense into water at the current pressure. When the
dewpoint is below 0 °C, the transmitter outputs frostpoint
(Tf) instead of dewpoint.
Enthalpy h kJ/kg
BTU/lb
Sum of the internal energy of a thermodynamic system.
Wet bulb
temperature
Tw °C
°F
The minimumtemperature that can be reached by
evaporative cooling in the current conditions.
Table 3 HMDW110 Series Output Parameters
Check the type label on your transmitter to verify its output
parameters and scaling of the output channels.
7
2 Product Overview

HMD110/112 Parts
Figure 1 HMD110/112 Parts
1 = PTFE membrane filter.
2 = Sensors for humidity and temperature.
3 = Fastening flange.
4 = Tightening screw for fastening flange.
5 = Type label.
6 = Transmitter cover.
7 = Component board. See Component Board on page11.
8 = Cable glands for 4 ... 8 mm diameter cable.
8
2 Product Overview

HMW110/112 Parts
Figure 2 HMW110/112 Parts
1 = Screw holes for mounting (2 pcs).
2 = Cable gland.
3 = Sensors for humidity and temperature.
4 = PTFE filter.
5 = Type label.
6 = Component board. See Component Board on page11.
7 = Probe.
8 = Transmitter cover with captive screws.
9
2 Product Overview

HMS110/112 Parts
Figure 3 HMS110/112 Parts
1 = Radiation shield. Do not remove for installation, only when replacing the
sensor or filter.
2 = Long screws that keep the radiation shield in place (2 pcs),
3mmhexsocket.
3 = Sensors for humidity and temperature under PTFE membrane filter.
4 = Component board. See Component Board on the facing page.
5 = Transmitter body.
6 = Screws for pole mounting (2 pcs, medium size Pozidriv).
7 = Clamp for pole mounting. The holes are threaded for the included pole
mounting screws and set screw.
8 = Set screw (medium size Pozidriv). Install after pole mounting to stop the
transmitter from turning.
9 = Medium size crosshead screws (6 pcs).
10 = Transmitter cover.
11 = Cable gland. Suitable for 4 ... 8 mm diameter cable.
10
2 Product Overview

Component Board
All HMDW110 transmitter models use the same component board and have two
4...20 mA outputs (loop powered). There is also a service port for configuration
and calibration use.
Figure 4 HMDW110 Series Component Board
1 = Terminal block for 4 ... 20 mA current loop outputs.
2 = Service port connector (4-pin M8).
3 = Terminal block for RS-485 output to RDP100 display panel (optional).
You can pull out the terminal blocks from the component board
for easier installation, and to disconnect the transmitter from
power and RS-485 when using the service port.
11
2 Product Overview

Analog Output Overrange Behavior
Analog outputs of the HMDW100 series transmitters have a defined behavior
when the values measured by the transmitter are outside the scaled analog
output range:
nOutput is clipped at the end of the scaled output range.
nYou can allow the output exceed the scaled range by 10%with the aover
serial command.
nOutput is set to error state (default 3.6 mA)if an error is active (for example,
due to sensor damage). You can change the error state using the aerr
command.
For configuration of the analog outputs using serial commands, see section
Analog output on page33.
12
2 Product Overview

3INSTALLATION
Selecting Location
When mounting duct model transmitters:
nAvoid installing in a location where condensation may fall on the sensor
inside the duct.
nPosition the sensor in the center of the duct.
nSelect a site where the transmitter can be installed horizontally, onto the side
of the duct. Do not point the probe downward, as this will make condensation
run down to the sensor.
When mounting wall model transmitters:
nSelect a location that represents well the area of interest.
nDo not install on the ceiling.
nAvoid placing the transmitter near heat and moisture sources, close to the
discharge of the supply air ducts, and in direct sunlight.
When mounting outdoor transmitters:
nInstall in a location with a good airflow around the transmitter.
nAvoid placing the transmitter near windows, air conditioning units, or other
heat and moisture sources such as cooling towers.
nInstall the transmitter at least 2.5 m above ground level.
13
3 Installation

HMD110/112 Installation
nMedium size crosshead screwdriver (Pozidriv) for screws on
cover and flange.
nSmall slotted screwdriver for screw terminals.
nDrill with 2.5 mm and 13 mm bits for making the installation
holes.
nTools for cutting and stripping wires.
n19 mm open-end wrench for tightening the cable gland.
Figure 5 HMD110/112 Installation
1. Remove the yellow transport protection cap and separate the fastening
flange from the transmitter.
2. Use the flange to mark the location and size of the installation holes on the
side of the duct.
3. Drill the installation holes in the duct. Secure the fastening flange to the duct
with the two screws (included).
14
3 Installation

4. Push the probe of the transmitter through the flange and into the duct.The
probe should reach far enough so that the sensor is located in the middle of
the duct.
Figure 6 HMD110/112 Centering Inside Duct
5. Secure the transmitter to the flange by tightening the screw on the flange
that holds the probe in place.
6. Open the transmitter cover, and route the cables through the cable glands.
Connect the wires to the screw terminals according to the wiring
instructions:
oWiring HMDW110 on page19
oWiring HMDW110 with RDP100 on page21
For the arrangement of the screw terminals, see section Component Board
on page11.
7. Tighten the cable gland(s) and close the transmitter cover.
15
3 Installation

HMW110/112 Installation
nMedium size crosshead screwdriver (Pozidriv) for cover
screws.
nSmall slotted screwdriver for screw terminals.
nTwo installation screws: Ø ≤ 3.5 mm, head Ø≤8mm.
nDepending on the wall material and screw type, you may
need a drill and a suitable drill bit to make installation holes
for screws.
nTools for cutting and stripping wires.
n19 mm open-end wrench for tightening the cable gland.
Figure 7 HMW110/112 Installation
1. Open the transmitter cover and use two screws (not included) to attach the
transmitter to the wall. The probe and cable gland should point down.
16
3 Installation

2. Open the transmitter cover, and route the cable through the cable gland.
Connect the wires to the screw terminals according to the wiring
instructions:
oWiring HMDW110 on page19
oWiring HMDW110 with RDP100 on page21
For the arrangement of the screw terminals, see section Component Board
on page11.
3. Tighten the cable gland and close the transmitter cover.
4. Remove the yellow transport protection cap from the probe.
HMS110/112 Installation
nMedium size crosshead screwdriver (Pozidriv).
nSmall slotted screwdriver for screw terminals.
nTools for cutting and stripping wires.
n19 mm open-end wrench for tightening the cable gland.
Additional tools for pole installation:
nZip ties for securing the cable to the pole.
Additional tools for wall installation:
nDrill and bits.
nScrews (2 pcs, Ø < 5.5 mm) and wall plugs.
nCable clips for securing the cable to the wall.
1. Open the six screws that hold the
transmitter cover.
2. Route the power and signal cable
through the cable gland, and
connect the wires to the screw
terminals according to the wiring
instructions:
oWiring HMDW110 on page19
oWiring HMDW110 with
RDP100 on page21
For the arrangement of the screw
terminals, see section
Component Board on page11.
17
3 Installation

3. Adjust the length of cable
between the cable gland and the
terminal blocks. Make the cable
short enough to close the cover
without leaving a cable loop in
the transmitter.
4. Disconnect the wired screw
terminal blocks by pulling them
off from the component board.
5. Mount the transmitter according
to the type of the installation site:
oPole installation
a. Use the supplied clamp
and screws to mount the
transmitter on a pole.
b. To prevent the transmitter
from turning on the pole,
tighten the set screw on
the center hole of the
clamp.
oWall installation
a. Drill two holes for wall
plugs 100 mm apart.
b. Place the wall plugs in the
holes.
c. Mount the transmitter
using two screws of
sufficient length.
100 mm
Ø 5.5 mm
18
3 Installation