Vaisala hmdw110 series User manual

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M211692EN-C
Quick Guide
Vaisala Humidity and Temperature
Transmitter Series
HMDW110

PUBLISHED BY
Vaisala Oyj
Vanha Nurmijärventie 21, FI-01670 Vantaa, Finland
P.O. Box 26, FI-00421 Helsinki, Finland
[phone]
Visit our Internet pages at www.vaisala.com.
© Vaisala Oyj 2019
No part of this document 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 documents 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 document are subject
to change without prior notice.
Local rules and regulations may vary and
they shall take precedence over the
information contained in this document.
Vaisala makes no representations on this
document’s compliance with the local
rules and regulations applicable at any
given time, and hereby disclaims any and
all responsibilities related thereto.
This document 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
English.............................................................................................................................................5
Deutsch......................................................................................................................................... 21
Français........................................................................................................................................39
日本語...............................................................................................................57
中文.................................................................................................................. 73
Русский........................................................................................................................................89
3

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Introduction to HMDW110 Series
HMDW110 series transmitters are accurate humidity and temperature transmitters for
measurements in HVAC and cleanroom applications. The series consists of the following
models:
• HMD110/112 models for installation in ventilation ducts
• HMW110/112 models for wall installation
• HMS110/112 models for outdoor use
HMDW110 transmitters can be ordered as:
• Loop powered models, with 2-wire current outputs for humidity and temperature
• Separately powered models, with RS-485 Modbus RTU output
HMD112, HMW112, and HMS112 are standard models that are preconfigured for current output at
the factory. HMD110, HMW110, and HMS110 are factory configurable models that are delivered
with customer specific output settings, including calculated humidity parameters and special
scaling of current outputs, or factory activated Modbus RTU functionality.
Loop powered current output models can be connected to Vaisala Remote Display Panel
RDP100 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.
HMDW110 series transmitters oer several output parameters. Relative humidity (RH) and
temperature (T) are the measured parameters, the others are calculated based on RH and T.
Check the type label on your transmitter to verify its output parameters and scaling of the
output channels.
Table 1 HMDW110 Series Output Parameters
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.
Dew point Td/f °C
°F
Temperature at which the water vapor in the air will
condense into water at the current pressure. When the dew
point is below 0 °C, the transmitter outputs frost point (Tf)
instead of dew point.
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.
HMDW110 Series Datasheet and User Guide (in English) are available from the
product page at www.vaisala.com/hmdw110.
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ENGLISH

HMD110/112 Installation
• Medium size crosshead screwdriver (Pozidriv) for screws on cover and flange
• Small slotted screwdriver for screw terminals
• Drill with 2.5 mm and 13 mm bits for making the installation holes
• Tools for cutting and stripping wires
• 19 mm open-end wrench for tightening the cable gland
Ø ≥13
84
250
2.5
2.5
mm
Figure 1 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).
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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 2 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.
7. Tighten the cable gland(s) and close the transmitter cover.
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HMW110/112 Installation
• Medium size crosshead screwdriver (Pozidriv) for cover screws.
• Small slotted screwdriver for screw terminals.
• Two installation screws: Ø ≤3.5 mm, head Ø ≤8 mm.
• Depending on the wall material and screw type, you may need a drill and a
suitable drill bit to make installation holes for screws.
• Tools for cutting and stripping wires.
• 19 mm open-end wrench for tightening the cable gland.
88 mm
≥10 mm
≤8 mm
≤3.5 mm
Ø 4 ... 8 mm
Figure 3 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.
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.
3. Tighten the cable gland and close the transmitter cover.
4. Remove the yellow transport protection cap from the probe.
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HMS110/112 Installation
• Medium size crosshead screwdriver (Pozidriv)
• Small slotted screwdriver for screw terminals
• Tools for cutting and stripping wires
• 19 mm open-end wrench for tightening the cable gland
Additional tools for pole installation:
• Zip ties for securing the cable to the pole
Additional tools for wall installation:
• Drill and bits
• Screws (2 pcs, Ø < 5.5 mm) and wall plugs
• Cable 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:
•Wiring Devices with Analog Output (page 14)
•Wiring Devices with Modbus Output (page 16)
For the arrangement of the screw terminals, see Component Board (page 12).
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 o from the component
board.
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5. Pole installation mounting:
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.
6. Wall installation mounting:
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 sucient length.
100 mm
Ø 5.5 mm
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7. Plug in the screw terminal blocks, close the cover, and tighten the screws.
8. Secure the cable to the pole using a zip tie, or on the wall using cable clips. Allow some
cable to hang down from the cable gland to prevent water from entering the transmitter
along the cable.
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Component Board
All HMDW110 transmitter models use the same component board, which has 2 output types:
Modbus mode (RS-485) and analog mode (current output). The output type is selected when
ordering the device. See the type label of the device to see the chosen output type.
The component board has also a service port for configuration and calibration use.
8 T-
7 T+
6 HUM-
5 HUM+
4 Pwr+
3 Pwr-
2 RS485-
1 RS485+
Service Port
1
2
3
Figure 4 HMDW110 Series Component Board
1Terminal block for 4 ... 20 mA current loop outputs. Must be disconnected when the
transmitter is powered through RS-485 connection in the lower terminal block (terminals
1 ... 4).
2Service port connector (4-pin M8)
3Terminal block for RS-485 output. For Modbus or RDP100 remote display panel
connection.
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.
Before using the transmitter in Modbus mode, always disconnect the terminal
block for terminals 5 ... 8 to prevent the eects of ground loop on measurements.
The RS-485 connector used for Modbus communication in the lower terminal
block will power the transmitter.
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Connecting to Service Port
Before connecting the transmitter to a PC:
• If the terminal block for terminals 5 ... 8 is wired, pull it out. This disconnects
the transmitter from supply voltage and prevents possible equipment damage
that may be caused by ground loops. The locations of the terminal blocks and
the service port are shown in Component Board (page 12).
• If the other terminal block is wired (terminals 1 ... 4), pull it out also. This
prevents the communication between the transmitter and the RDP100 remote
display panel or Modbus (RS-485) host from interfering with your connection.
The service port is intended for a temporary connection to the transmitter. You can use it for
configuration, calibration, and troubleshooting using a computer with Windows operating
system. Use Vaisala Insight software to connect to the transmitter. You also need a Vaisala USB
cable for computer connection (order code 219690).
The RS-485 line of the service port is shared with the connection to RS-485 Modbus output/
output to RDP100 remote display panel; the M8 service port connector is just an additional
connector for easier access.
Download Insight software at www.vaisala.com/insight.
For more information and examples of using Vaisala Insight software and serial
commands, see HMDW110 Series User Guide (M211726EN) available at
www.vaisala.com/hmdw110.
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ENGLISH

Wiring HMDW110
Wiring Devices with Analog Output
HMDW110 series transmitters are designed for a supply voltage range of 10 ... 28 VDC. The
minimum required voltage depends on the loop resistance (0 ... 600 Ω) as shown below.
Supply voltage (VDC)
Loop resistance (Ω)
600
0
0
20
28
10
300
Operating
region
Figure 5 HMDW110 Supply Voltage Operating Region
With HMDW110 transmitters ordered with analog output, you must always connect the
humidity measurement current loop (HUM, terminals 5 and 6) to power the transmitter.
Connecting the temperature measurement current loop (terminals 7 and 8) is optional.
8 T -
7 T+
6 HUM-
5 HUM+
A
+
-
A
Power supply
+
-
Power supply
2 x 4 ... 20 mA
R
L
= 0 ... 600 Ω
Figure 6 HMDW110 Wiring, Analog Output
Wiring Both Current Loops with a Single Power Supply
8 T -
7 T+
6 HUM-
5 HUM+
A
A
+
-
Power supply
2 x 4 ... 20 mA
R
L
= 0 ... 600 Ω
Figure 7 HMDW110 Wiring with Single Power Supply
14 M211692EN-C

Wiring HMDW110 with RDP100 Remote Display Panel
8 T -
7 T+
6 HUM-
5 HUM+
4 Pwr+
3 Pwr -
2 RS485 -
1 RS485+
A
+
-
A
RDP100
HMDW110
Power supply
10 ... 28 VDC
+
-
Power supply
10 ... 28 VDC
2 x 4 ... 20 mA
R
L
= 0 ... 600 Ω
PWR+
GND
RS485+
RS485-
GND
ExtPWR+
Figure 8 HMDW110 Wiring with RDP100 Remote Display Panel
You must always connect the humidity measurement current loop (HUM, terminals 5 and 6) to
power the transmitter. Connecting the temperature measurement current loop (terminals 7
and 8) is optional.
Connect the RDP100 remote display panel using terminals 1 ... 4. The HMDW110 series
transmitter provides both power and data to the RDP100.
Terminals 1 ... 4 shall be used only for connecting the RDP100 (optional) when
using the analog outputs. If the RDP100 is not used, terminals 1 ... 4 must be left
unconnected. Otherwise the analog outputs may output incorrect readings.
The GND input of the RDP100 must be connected only to terminal 3 of the
HMDW110 transmitter. It must not be connected to any local ground potential.
When using the RDP100 with HMDW110 series transmitters, do not connect the
Extpwr jumper to the RDP100 component board.
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Wiring Devices with Modbus Output
Use terminals 1 ... 4 for supply power and Modbus output. In addition to RS-485 data wires, the
common wire (ground reference) must be connected between the RS-485 host and the
HMDW110 transmitter.
DC power supply
-
+
4 Pwr+
3 Pwr-
2 RS485-
1 RS485+
RS-485 host
RS-485 +
RS-485 -
RS-485 common
10 ... 28 VDC
Figure 9 HMDW110 Wiring, Modbus Output
Do not connect the analog outputs (terminals 5 ... 8) at the same time when
supply power and/or Modbus output is connected to terminals 1 ... 4. Having both
terminals connected simultaneously may result in erroneous analog readings
caused by eects of possible ground loop.
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Modbus Communication
Transmitters ordered with the Modbus configuration option are accessed using the Modbus
serial communication protocol. The supported Modbus variant is Modbus RTU (Serial Modbus)
over RS-485 interface.
Table 2 Default Modbus Serial Communication Settings
Description Default Value
Serial bit rate 19200
Parity N
Number of data bits 8
Number of stop bits 2
Modbus device address 240
Serial delay 0
Communication mode Modbus RTU
Use Vaisala Insight software to change the Modbus serial communication settings if needed.
Download Insight software at www.vaisala.com/insight.
Data Encoding
Registers using "32-bit float" data format are encoded using the "binary32" encoding defined
in IEEE 754 (also known as "single-precision floating point format").
The least significant 16 bits of a floating point number are placed at the Modbus register listed
in the table, while the most significant 16 bits are placed in the register with number/
address + 1, as specified in Open Modbus TCP Specification, Release 1.0. This is also known as
"little-endian" or "Modicon" word order.
Reading the measurement data registers with incorrect floating point format setting may
occasionally result in correct-looking values. It is highly recommended to first try reading the
register number 7938 (floating point test) to see that you have configured the floating point
format correctly on your Modbus host system.
Test Value Registers
Read the known test values from the test registers to verify the functionality of your Modbus
implementation.
Table 3 Modbus Test Registers (Read-Only)
Register Number
(Decimal)
Address
(Hexadecimal)
Register Description Data Format Test Value
7937 1F00hex Signed integer test 16-bit integer -12345
7938 1F01hex Floating point test 32-bit float -123.45
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Register Number
(Decimal)
Address
(Hexadecimal)
Register Description Data Format Test Value
7940 1F03hex Text string test 7-character
ASCII string
Text string
"-123.45"
Measurement Data Registers
Accessing unavailable (temporarily missing) measurement data does not generate an exception.
“Unavailable” value (a quiet NaN) is returned instead.
Measurement output is shown in metric units. If non-metric values are needed in Modbus use, the
units shall be converted in the Modbus master (PLC) using the scaling functions typically available.
Table 4 Modbus Measurement Data Registers (Read-Only)
Register Number
(Decimal)
Address
(Hexadecimal)
Register Description Data Format Unit
1 0000hex Relative humidity 32-bit float %RH
3 0002hex Temperature 32-bit float °C
9 0008hex Dew/frost point
temperature
32-bit float °C
19 0012hex Wet bulb temperature 32-bit float °C
27 001Ahex Enthalpy 32-bit float kJ/kg
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Vaisala Insight Software
Vaisala Insight PC software can be used to check, configure, and adjust HMDW110 series
transmitters intuitively without typing any serial commands. The transmitter can be connected
to Insight software using a Vaisala USB cable for computer connection (order code 219690).
With the Insight software, you can:
• See device information and status.
• See real-time measurement.
•Configure serial communication settings, filtering factor, and analog output parameters
and scaling.
• Calibrate and adjust the device.
Insight software guides you when changing the settings and performing adjustments on the
transmitter. However, please read carefully the chapters on calibration and adjustment in
HMDW110 Series User Guide (M211726EN) before performing adjustments on your HMDW110
device.
Download Insight software at www.vaisala.com/insight.
HMDW110 transmitters support Insight from transmitter software version 2.2.3
onwards.
Connecting to Insight Software
• Computer with Vaisala Insight software installed
• USB connection cable (order code 219690)
Before connecting the transmitter to a PC:
• If the terminal block for terminals 5 ... 8 is wired, pull it out. This disconnects
the transmitter from supply voltage and prevents possible equipment damage
that may be caused by ground loops. The locations of the terminal blocks and
the service port are shown in Component Board (page 12).
• If the other terminal block is wired (terminals 1 ... 4), pull it out also. This
prevents the communication between the transmitter and the RDP100 remote
display panel or Modbus (RS-485) host from interfering with your connection.
1. Open the Insight software.
2. Connect the USB cable to a free USB port on the PC.
3. Connect the USB cable to the service port of the transmitter.
4. Wait for Insight software to detect the transmitter.
If the transmitter is not detected, disconnect and reconnect the Vaisala USB cable to the
service port connector of the transmitter.
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ENGLISH

Technical Support
Contact Vaisala technical support at [e-mail]. Provide at least the
following supporting information:
• Product name, model, and serial number
• Name and location of the installation site
• Name and contact information of a technical person who can provide further
information on the problem
For more information, see www.vaisala.com/support.
Warranty
For standard warranty terms and conditions, see 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.
Follow the statutory regulations for disposing of the product and packaging.
20 M211692EN-C