HMT100 User`s Guide in English

HMT100 User`s Guide in English
USER'S GUIDE
®
Vaisala HUMICAP Humidity and
Temperature Transmitter Series
HMT100
M210701EN-D
PUBLISHED BY
Vaisala Oyj
P.O. Box 26
FI-00421 Helsinki
Finland
Phone (int.): +358 9 8949 1
Fax:
+358 9 8949 2227
Visit our Internet pages at http://www.vaisala.com/
© Vaisala 2009
No part of this manual may be reproduced in any form or by any means, electronic or
mechanical (including photocopying), nor may its contents be communicated to a third
party without prior written permission of the copyright holder.
The contents are subject to change without prior notice.
Please observe that this manual does not create any legally binding obligations for
Vaisala towards the customer or end user. All legally binding commitments and
agreements are included exclusively in the applicable supply contract or Conditions of
Sale.
________________________________________________________________________________
Table of Contents
CHAPTER 1
GENERAL INFORMATION............................................................................ 6
About This Manual ................................................................... 6
Version Information ............................................................... 6
Related Manuals ................................................................... 6
General Safety Considerations ............................................. 7
Feedback............................................................................... 7
Product Related Safety Precautions ...................................... 7
ESD Protection ......................................................................... 7
Recycling .................................................................................. 8
Patent Notice ............................................................................ 8
Trademarks ............................................................................... 9
License Agreement .................................................................. 9
Warranty.................................................................................... 9
CHAPTER 2
PRODUCT OVERVIEW................................................................................ 11
Introduction to the HMT100 Humidity and Temperature
Transmitter.............................................................................. 11
Fixed and Remote Probe Models ....................................... 12
Optional Display .................................................................. 12
HMT100 Transmitter Components...................................... 12
CHAPTER 3
INSTALLATION............................................................................................ 15
Mounting ................................................................................. 15
Wall Mounting ..................................................................... 15
With Plastic Wall Assembly Plate (Provided)................. 15
With Optional Aluminum Wall Installation Plate............. 16
Installation with Rain Shield ................................................ 17
Installation with Radiation Shield ........................................ 18
Duct Installation Kit ............................................................. 19
Probe Assembly with Duct Installation Kit ..................... 20
Drilling Instructions for Duct Installation Kit ................... 21
Connections............................................................................ 22
CHAPTER 4
MAINTENANCE ........................................................................................... 25
Replacing the HUMICAP® Sensor ......................................... 25
Fixed Probe Model .............................................................. 25
Remote Probe Model .......................................................... 25
Removing and Fastening the Probe..................................... 26
Fixed Probe Model .............................................................. 26
Remote Probe Model .......................................................... 27
VAISALA ________________________________________________________________________ 3
User's Guide ______________________________________________________________________
Calibration and Adjustment...................................................28
Relative Humidity Adjustment Using Push Buttons.............28
Adjustment with HM70 ........................................................29
Field Checking and Adjustment Using a Calibrated
Reference Probe ............................................................30
One-Point Adjustment Using a Calibrator ......................31
Two-Point Adjustment Using a Calibrator ......................32
LiCl-NaCl Adjustment .....................................................32
Temperature Field Check and Adjustment by Using a
Calibrated Reference Probe...........................................33
Adjustment with HMI41 .......................................................34
Connections and Selecting the Calibrator Function.......35
Offset and Gain Adjustments .........................................36
HMI41 as a Reference Meter ....................................36
HMI41 as a Terminal.................................................37
Troubleshooting..............................................................39
Analog Output Tests ..............................................................40
CHAPTER 5
TROUBLESHOOTING..................................................................................41
Error Mode...............................................................................41
Current Output.....................................................................41
Voltage Output.....................................................................41
Technical Support ..................................................................41
Return Instructions ................................................................42
Vaisala Service Centers .........................................................43
CHAPTER 6
TECHNICAL DATA ......................................................................................45
Specifications .........................................................................45
Dimensions in mm (inches)...................................................49
4 ___________________________________________________________________ M210701EN-D
________________________________________________________________________________
List of Figures
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figure 13
Figure 14
Figure 15
Figure 16
Figure 17
Figure 18
Figure 19
Figure 20
HMT100 Components .............................................................. 13
Plastic Wall Assembly Plate (Spare Part No. GM45160)......... 15
Plastic Wall Assembly Plate with Aluminum Installation Plate. 16
Installation with Rain Shield (Spare Part No. 215109)............. 17
Installation of the Humidity Probe with the Radiation Shield.... 18
Probe Installation with the Duct Installation Kit ........................ 19
Assembly of the Humidity Probe with the Duct Installation Kit. 20
Drilling Instructions ................................................................... 21
HMT100 Connection Board...................................................... 22
(1) Isolated Current-Loop Wiring, (2) Voltage Output Wiring ... 23
Removing the Humidity Probe (Fixed Probe Model)................ 26
Removing the Humidity Probe (Remote Probe Model)............ 27
Adjustment Buttons .................................................................. 28
Location of the MI70 Probe and Cable Connector Ports ......... 29
Example of the MI70 Adjustment Menu ................................... 31
Example of the MI70 Adjustment Mode Graph Display ........... 31
Location of the HMI41 Calibration Connector .......................... 34
Accuracy of Temperature Measurement.................................. 46
Dimensions HMT100 Fixed Probe Model ................................ 49
Dimensions HMT100 Remote Probe Model............................. 50
List of Tables
Table 1
Table 2
Table 3
Table 4
Table 5
Table 6
Table 7
Table 8
Table 9
Table 10
Table 11
Table 12
Manual Revisions ....................................................................... 6
Related Manuals ........................................................................ 6
Wiring Table ............................................................................. 23
Common Problems During Adjustment and Their Remedies .. 39
Relative Humidity Measurement Specifications ....................... 45
Temperature Measurement Specifications .............................. 45
Dewpoint Temperature (Calculated) Measurement
Specifications ........................................................................... 46
Accuracy of Dewpoint Temperature Measurement.................. 46
Operating Environment Specifications ..................................... 46
Inputs and Outputs ................................................................... 47
Mechanics Specifications ......................................................... 47
Options and Accessories.......................................................... 48
VAISALA ________________________________________________________________________ 5
User's Guide ______________________________________________________________________
CHAPTER 1
GENERAL INFORMATION
This chapter provides general notes for the manual and the product.
About This Manual
This manual provides information for installing, operating, and
maintaining the Humidity and Temperature Transmitter HMT100.
Version Information
Table 1
Manual Revisions
Manual Code
M210701EN-A
M210701EN-B
M210701EN-C
M210701EN-D
Description
June 2005 - First version
April 2006 - Corrected Wiring table (Table 3)
May 2007 - Updated Product Overview,
Figure 9, and duct installation kit order code.
Corrected calibration instructions in the
Maintenance chapter.
June 2009 - Added spare part numbers of
installation accessories to installation instructions.
Updated calibration and adjustment instructions.
Related Manuals
Table 2
Related Manuals
Manual Code
M210185EN-B
M210297EN-C
M210316EN-A
Manual Name
Humidity Calibrator HMK15 User's Guide
Hand-held Humidity and Temperature Meter
HM70 User's Guide
HMI41 Indicator and HMP41/45/46 Probes
Operating Manual
6 ___________________________________________________________________ M210701EN-D
Chapter 1 ________________________________________________________ General Information
General Safety Considerations
Throughout the manual, important safety considerations are highlighted
as follows:
WARNING 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
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
Note highlights important information on using the product.
Feedback
Vaisala Customer Documentation Team welcomes your comments and
suggestions on the quality and usefulness of this publication. If you find
errors or have other suggestions for improvement, please indicate the
chapter, section, and page number. You can send comments to us by email: [email protected]
Product Related Safety Precautions
The Humidity and Temperature Transmitter HMT100 delivered to you
has been tested for safety and approved as shipped from the factory. Note
the following precautions:
CAUTION
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
VAISALA ________________________________________________________________________ 7
User's Guide ______________________________________________________________________
ESD for their intended use. However, it is possible to damage the product
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:
- Handle ESD sensitive components on a properly grounded and
protected ESD workbench. When this is not possible, ground yourself
to the equipment chassis before touching the boards. Ground yourself
with a wrist strap and a resistive connection cord. When neither of the
above is possible, touch a conductive part of the equipment chassis
with your other hand before touching the boards.
- Always hold the boards by the edges and avoid touching the
component contacts.
Recycling
Recycle all applicable material.
Dispose of batteries and the unit according to statutory regulations. Do
not dispose of with regular household refuse.
Patent Notice
The HMT100 is protected by the following patents and their
corresponding national rights:
Finnish patent 98861, French patent 6650303, German patent 69418174,
Japanese patent 3585973, UK patent 0665303, U.S. patent 5607564.
8 ___________________________________________________________________ M210701EN-D
Chapter 1 ________________________________________________________ General Information
Trademarks
HUMICAP is a registered trademark of Vaisala Oyj.
License Agreement
All rights to any software are held by Vaisala or third parties. The
customer is allowed to use the software only to the extent that is provided
by the applicable supply contract or Software License Agreement.
Warranty
For certain products Vaisala normally gives a limited one-year 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
VAISALA ________________________________________________________________________ 9
User's Guide ______________________________________________________________________
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10 __________________________________________________________________ M210701EN-D
Chapter 2 __________________________________________________________ Product Overview
CHAPTER 2
PRODUCT OVERVIEW
Thank you for choosing the Vaisala HUMICAP® Humidity and
Temperature Transmitter Series HMT100. This chapter introduces you to
its features.
The Vaisala range of relative humidity measurement instruments covers
all the applications from ventilation to process control in demanding
explosive areas. For more information about other Vaisala relative
humidity instruments, please contact your Vaisala representative or visit
www.vaisala.com.
Introduction to the HMT100 Humidity and
Temperature Transmitter
The Vaisala HUMICAP® Humidity and Temperature Transmitter Series
HMT100 measures relative humidity, temperature and dewpoint. It is
powered with a 10 ... 35 VDC or 24 VAC input voltage and it outputs an
analog signal of either 4 ... 20 mA, 0 ... 1 V, 0 ... 5 V or 0 ... 10 V.
The HMT100 transmitter can be configured to output either one or two
quantities, in the following combinations:
- simple RH transmitter
- simple Td transmitter
- RH and T transmitter
- Td and T transmitter
The output quantities and the analog signal type (current or voltage
output) are set during order time, and cannot be changed later by the user.
The following accessories are optionally available:
-
Wall installation plate (aluminium)
Duct installation kit
Rain shield with installation kit
Rain/solar radiation shield installation kit (for pole installation)
VAISALA _______________________________________________________________________ 11
User's Guide ______________________________________________________________________
Fixed and Remote Probe Models
The HMT100 is available either with a fixed probe (0.1 m probe cable)
or a remote probe with different cable lengths (3/5/10 m cable lengths. A
10 m extension cable is also available; see Table 12 Options and
Accessories on page 48).
The HMP100 relative humidity probe used in the HMT100 transmitter is
fully interchangeable. You can easily remove the probe and replace it
with a new one without having to adjust the transmitter.
Optional Display
The HMT100 is also available with an optional one-line display. The
display shows the measurement results of selected parameters in selected
units (selected at the time of ordering). The parameters are displayed in
turns one at a time. The display backlight is turned on and off with a
jumper on the transmitter electronics motherboard.
HMT100 Transmitter Components
Figure 1 on page 13 illustrates the main features of HMT100. On the left
is a remote probe model without display, and on the right is a fixed probe
model with the optional display. The numbers and arrows indicate the
main components of the transmitters.
12 __________________________________________________________________ M210701EN-D
Chapter 2 __________________________________________________________ Product Overview
0603-048
Figure 1
HMT100 Components
The following numbers refer to Figure 1 above:
1
2
3
4
5
=
=
=
=
=
Transmitter housing; transmitter cover
Probe cover
Probe cable
HMP100 probe
Filter
See Table 12 on page 48 for spare part numbers.
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14 __________________________________________________________________ M210701EN-D
Chapter 3 _______________________________________________________________ Installation
CHAPTER 3
INSTALLATION
Mounting
Wall Mounting
With Plastic Wall Assembly Plate (Provided)
1.
2.
Attach the wall assembly plate to the wall with two screws.
Press the transmitter down so that it slides along the rails of the
mounting plate.
0505-171
Figure 2
Plastic Wall Assembly Plate (Spare Part No.
GM45160)
VAISALA _______________________________________________________________________ 15
User's Guide ______________________________________________________________________
With Optional Aluminum Wall Installation Plate
1.
2.
3.
Attach the aluminum plate to the wall.
Attach the plastic wall assembly plate (provided) to the aluminum
plate with two screws.
Press the transmitter down so that it slides along the rails of the
wall assembly plate.
0505-339
Figure 3
Plastic Wall Assembly Plate with Aluminum
Installation Plate
The following numbers refer to Figure 3 above:
1
=
2
=
Plastic wall assembly plate (provided) (spare part no.
GM45160)
Aluminum wall installation plate (optional accessory,
see order form; spare part no. DRW010712)
16 __________________________________________________________________ M210701EN-D
Chapter 3 _______________________________________________________________ Installation
Installation with Rain Shield
The installation kit with rain shield includes a metal mounting plate and
a rain shield for the transmitter. Vaisala order code: 215109.
0505-340
Figure 4
1.
2.
3.
4.
NOTE
Installation with Rain Shield (Spare Part No. 215109)
Fasten the metal mounting plate to the wall or pole with screws
(see Figure 4 above). Note the arrow on the mounting plate. Attach
the mounting plate with the arrow pointing upwards.
Fasten the plastic wall assembly plate (provided) to the metal
mounting plate with three screws.
Fasten HMT100 Humidity and Temperature Transmitter to the wall
assembly plate by pressing the transmitter down so that it slides
along the rails of the mounting plate.
Fasten the rain shield to the metal mounting plate with two (M6)
mounting screws.
Remove the rain shield before taking out the HMT100.
VAISALA _______________________________________________________________________ 17
User's Guide ______________________________________________________________________
Installation with Radiation Shield
DTR502 with probe installation kit includes a rain/solar radiation shield
DTR502 and a plastic installation support for the humidity probe. Vaisala
order code: DTR502B. If you already have the DTR502 shield and need
only the installation support for the probe, it is available with Vaisala
order code 210623.
1.
2.
3.
Fasten the probe to the installation support with two cable ties
(items 3 and 4 in Figure 5 below).
Insert and attach the support to the radiation shield by tightening
the plastic nut (item 2 in Figure 5).
Attach the entire radiation shield/probe assembly to a pole mast
(pole mast diameter: 30 ... 60 mm/1.2 ... 2.3") with the U-bolt and
support arm. See Figure 5.
1
6
2
5
3
4
0505-248
Figure 5
Installation of the Humidity Probe with the
Radiation Shield
The following numbers refer to Figure 5 above:
1 =
2 =
3, 4 =
5 =
6 =
DTR502
Plastics nut
Cable tie
Adapter DRW212054 (installation support)
Probe
18 __________________________________________________________________ M210701EN-D
Chapter 3 _______________________________________________________________ Installation
Duct Installation Kit
The duct installation kit includes a plastic pipe with a flange (Vaisala
order code: 215619). To install the HMP100 probe with the duct
installation kit, drill a hole to the duct wall, assemble the probe to the
duct installation kit, slide the probe head through the hole, and attach the
flange to the duct wall with four screws. See pages 20 and 21 for details.
24
1
L
0505-176
Figure 6
Probe Installation with the Duct Installation Kit
The following explanations refer to Figure 6 above:
1
=
Tension screw
Distance L can be adjusted and locked in place with the tension screw.
VAISALA _______________________________________________________________________ 19
User's Guide ______________________________________________________________________
Probe Assembly with Duct Installation Kit
1
2
3
0505-177
Figure 7
Assembly of the Humidity Probe with the Duct
Installation Kit
The following numbers refer to Figure 7 above:
1
2
3
1.
2.
3.
=
=
=
HMP100
Duct installation kit
Probe cable
Slide the probe cable through the duct installation kit plastic pipe.
Attach the probe cable to the HMP100 Humidity Probe.
Attach probe assembly to the duct.
20 __________________________________________________________________ M210701EN-D
Chapter 3 _______________________________________________________________ Installation
Drilling Instructions for Duct Installation Kit
.2
Ø3
42
4
Ø2
3
2
1
0505-178
Figure 8
Drilling Instructions
The following numbers refer to Figure 8 above:
1
2
3
=
=
=
Mounting screw
Tension screw
HMP100 assembled in duct installation kit plastic pipe
Drill the holes for the duct installation kit as follows:
1.
2.
Use a 24-mm drill bit to drill a hole to the duct wall for the
humidity probe.
Drill holes for the duct installation kit mounting screws around the
hole in a square arrangement, 42 mm apart from each other. Use a
3.2-mm drill bit to drill the holes for the mounting screws (four
ST4.2×16-C-Z DIN 7981 screws).
VAISALA _______________________________________________________________________ 21
User's Guide ______________________________________________________________________
Connections
0505-179
Figure 9
HMT100 Connection Board
The following numbers refer to Figure 9 above:
1
2
3
=
=
=
4
5
6
7
=
=
=
=
1.
2.
3.
Service port
Adjustment buttons
Jumpers for selecting voltage or current output
(not user adjustable)
Optional LCD
Field wire terminals
Connector for HMP100 Humidity Probe
Display backlight jumper (only in voltage output version);
factory setting: backlight ON)
Open the transmitter cover by taking out the cover screws.
Insert the power supply wires and the signal wires through the
cable bushing in the bottom of the transmitter.
Connect the wires as indicated in Figure 10 and in Table 3 on page
23. Note that you must wire the transmitter according to the type of
transmitter (specified at order time as 2-wire current output or 3wire voltage output).
22 __________________________________________________________________ M210701EN-D
Chapter 3 _______________________________________________________________ Installation
NOTE
If an isolated output is required with current outputs, both channels
require their own power supply. CH1 is always required to be powered
because CH1 is the main output, and the transmitter will not operate if
only CH2 is connected.
4.
Close the cover and tighten the cover screws. The transmitter is
ready for use.
0704-064
Figure 10
(1) Isolated Current-Loop Wiring, (2) Voltage Output
Wiring
Table 3
Wiring Table
Terminal
1
2
3
4
5
6
7
Current Output
(2-Wire, CH2 Isolated)
CH1+ (signal and power supply +)
CH1– (signal and power supply –)
CH2+ (signal and power supply +)
CH2– (signal and power supply –)
Shield
Voltage Output
(3-Wire)
Power supply +
Power supply –
CH1+
CH2+
CH– (for both
channels)
Shield
The numbers 1 ... 7 in the first column of the wiring table refer to Figure
10 above. If you have at order time selected a two-wire transmitter, make
the wiring according to item 1 in Figure 10. If you have selected a threewire transmitter, make the wiring according to item 2 in Figure 10.
VAISALA _______________________________________________________________________ 23
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24 __________________________________________________________________ M210701EN-D
Chapter 4 ______________________________________________________________ Maintenance
CHAPTER 4
MAINTENANCE
This chapter provides information that is needed in basic maintenance of
the product.
Replacing the HUMICAP® Sensor
Fixed Probe Model
1.
2.
3.
4.
The end of the plastic probe cover is detachable. Carefully turn the
end about 1/6 of a turn to loosen it. Remove the end of the probe
cover and the filter.
Remove the damaged sensor and insert a new one.
Recalibrate the transmitter.
Replace a dirty filter to ensure a maximum lifetime and a fast
response for the sensor. Do not attempt to clean the filter.
Remote Probe Model
1.
2.
3.
4.
Remove the filter (plastic grid or sintered stainless steel).
Remove the damaged sensor and insert a new one.
Recalibrate the transmitter.
Replace a dirty filter to ensure a maximum lifetime and a fast
response for the sensor. Do not attempt to clean the filter.
VAISALA _______________________________________________________________________ 25
User's Guide ______________________________________________________________________
Removing and Fastening the Probe
Fixed Probe Model
Remove and replace the probe as follows:
1.
2.
3.
4.
4
5.
3
6.
2
7.
Loosen the plastic probe cover by carefully turning
it counter clockwise.
Remove the probe cap and the O-ring.
Remove the probe cover. The probe is now exposed.
Unscrew the small sleeve that is securing the probe
in place and pull out the probe.
Replace the probe and screw the small sleeve back
on, securing the probe tightly in place.
Replace the probe cover and screw it tightly back in
place.
Replace the O-ring and the probe cap.
1
0505-181
Figure 11
Removing the Humidity Probe (Fixed Probe Model)
The following numbers refer to Figure 11 above:
1
2
3
4
=
=
=
=
Probe cap
Probe cover
O-ring
HMP100 probe
26 __________________________________________________________________ M210701EN-D
Chapter 4 ______________________________________________________________ Maintenance
Remote Probe Model
1.
2.
Unscrew the small sleeve that secures the probe in place at the end
of the probe cable and pull out the probe.
Replace the probe and screw the small sleeve back on, securing the
probe tightly in place.
1
2
3
0506-006
Figure 12
Removing the Humidity Probe (Remote Probe
Model)
The following numbers refer to Figure 12 above:
1
2
3
=
=
=
Probe cable
Sleeve securing the probe to the cable
HMP100 probe
VAISALA _______________________________________________________________________ 27
User's Guide ______________________________________________________________________
Calibration and Adjustment
Calibrate and adjust the HMT100 using the push-buttons on the
motherboard or with portable humidity meters HM70 or HMI41.
A calibrator kit is needed for calibration against saturated salt solutions.
The HMK15 Humidity Calibrator and pre-measured certified salts are
available from Vaisala. For further information, please contact your
Vaisala representative.
Vaisala Service Centers also offer accredited calibrations for humidity
and temperature. See contact information on page 42.
It is also possible to remove the HMP100 probe and replace it with a new
one. The old probe can be adjusted using another HMT100 transmitter
body, if you have one available.
NOTE
RH Field Calibration and Adjustment, as instructed in the following
pages, is restricted to a certain adjustment range to minimize the effects
of special circumstances, such as chemical contamination. In case the
probe is outside its adjustment/trim range due to, for example, chemical
exposure, the calibration cannot be completed. In this case, it is
recommended that you change the probe or contact Vaisala Services.
Relative Humidity Adjustment Using
Push Buttons
0505-182
Figure 13
Adjustment Buttons
A simple push-button adjustment is carried out using two relative
humidity references: 11.3 % RH (LiCl) and 75.5 % RH (NaCl).
To carry out the adjustment, follow these instructions:
1.
2.
Remove the probe cover and the filter.
Open the transmitter cover.
28 __________________________________________________________________ M210701EN-D
Chapter 4 ______________________________________________________________ Maintenance
3.
4.
5.
6.
7.
8.
9.
10.
11.
Press the ADJ button on the transmitter motherboard. An indicator
LED lights up.
Insert the probe into the measurement hole of the LiCl salt
chamber. The indicator LED blinks evenly, indicating that the
measurement is changing.
Wait for 30 minutes or until the indicator LED stops blinking and is
lit continuously, which means that the measurement has stabilized.
Press the LiCl 11 % button to adjust the 11 % RH condition. The
transmitter returns to the normal operation mode, and the indicator
LED turns off.
To start calibrating the 75 % RH condition, press the ADJ button on
the transmitter motherboard again. The indicator LED lights up.
Insert the probe into the measurement hole of the NaCl salt
chamber. The indicator LED starts blinking.
Wait for 30 minutes or until the indicator LED stops blinking and is
lit continuously.
Press the NaCl 75 % button to adjust the 75 % RH condition. The
transmitter returns to the normal operation mode, and the indicator
LED turns off.
Replace the filter and the probe cover.
Adjustment with HM70
You can check and adjust the HMT100 relative humidity measurement
with the HM70 Hand-Held Humidity and Temperature meter. A HM70connection cable is needed. Vaisala order code: 211339.
There are four types of adjustments available: field checking and
adjustment using a calibrated reference probe, one-point adjustment
using a calibrator, two-point adjustment using a calibrator, and LiClNaCl adjustment.
Follow the first seven steps and continue according to the chosen
adjustment method.
0505-351
Figure 14
Location of the MI70 Probe and Cable Connector
Ports
VAISALA _______________________________________________________________________ 29
User's Guide ______________________________________________________________________
Connect the 211339 HM70-connection cable to the SERVICE PORT
connector on the HMT100 motherboard (see Figure 9 on page 22).
Connect the other end of the connection cable to either of the
HM70's connector ports located on the bottom of the indicator (see
Figure 14 above).
Turn on both devices (or just HM70, in case that HMT100 is on
continuously).
The reading of the transmitter is shown on the top or middle row of
the indicator display, depending on which connector port the
connection cable is connected to.
Press the ADJ button on the HMT100 motherboard to open the
adjustment mode. The indicator LED on the HMT100 motherboard
starts flashing.
1.
2.
3.
4.
5.
NOTE
From this point onward, the adjustment is carried out using the MI70
indicator. When operating the MI70, do not press the buttons too quickly
or the calibration may fail. Wait for one second between each press.
Press OK to start adjustment.
Check the environment settings if needed. Otherwise, press NO.
Select RH or T adjustment. Continue according to the directions of the
desired adjustment method.
6.
7.
Field Checking and Adjustment Using a Calibrated
Reference Probe
Follow steps 1 to 7 on page 30 and continue as follows:
8.
Check that the probes are located in equal conditions and wait
until the readings have stabilized (may take 30 minutes or
more). If you are close to the probes, do not breath in their
direction.
9.
Press ADJUST to continue adjusting.
10.
Choose To same as RHI/II from the MI70 adjustment menu, press
SELECT (MI70 automatically recognizes which port the HMP70
series probe is connected to).
11.
Confirm the adjustment by pressing YES.
12.
The adjustment is done. Press BACK and EXIT to return to the
basic display.
13.
Turn off the MI70 and detach the connection cable.
30 __________________________________________________________________ M210701EN-D
Chapter 4 ______________________________________________________________ Maintenance
One-Point Adjustment Using a Calibrator
When adjusting the transmitter in only one reference condition, please
take care that the reference condition represents the measuring
environment. MI70 indicator is used now only as a terminal for
visualizing and setting the transmitter's RH reading.
Follow steps 1 to 7 on page 30 and continue as follows:
8.
Remove the filter from the transmitter's probe and insert the
probe head into the reference condition.
9.
Press ADJUST to continue adjusting.
10.
Choose 1-point adjustment from the MI70 adjustment menu and
press SELECT.
0505-185
Figure 15
11.
Example of the MI70 Adjustment Menu
Press READY when the reading has stabilized in the reference
condition (may take 30 minutes or more). You can follow the
stabilization from the GRAPH display.
0505-186
Figure 16
Example of the MI70 Adjustment Mode Graph
Display
12.
Enter the correct reference value with the arrow buttons. Press
OK.
13.
Confirm the adjustment by pressing YES.
14.
The adjustment is done. Press BACK and EXIT to return to the
basic display.
15.
Turn off the MI70 and detach the connection cable.
VAISALA _______________________________________________________________________ 31
User's Guide ______________________________________________________________________
Two-Point Adjustment Using a Calibrator
Note that the difference between the two reference humidities must be at
least 50 %. MI70 indicator is used now only as a terminal for visualizing
and setting the transmitter's RH reading.
Follow steps 1 to 7 on page 30 and continue as follows:
8.
Remove the filter from the transmitter's probe and insert the
probe head into the lower humidity reference condition.
9.
Press ADJUST to continue adjusting.
10.
Choose 2-point adjustment from the MI70 adjustment menu and
press SELECT.
11.
Press READY when the reading has stabilized in the first reference
condition (may take 30 minutes or more). You can follow the
stabilization from the GRAPH display.
12.
Enter the correct reference value in the first condition with the
arrow buttons. Press OK.
13.
Remove the probe from the first reference condition and insert
the probe head into the higher humidity reference condition.
14.
Press READY when the reading has stabilized in the second
reference condition (may take 30 minutes or more). You can
follow the stabilization from the GRAPH display.
15.
Enter the correct reference value in the second condition with
the arrow buttons. Press OK.
16.
Confirm the adjustment by pressing YES (by pressing NO you
return to adjustment mode display and no changes are made). If
the difference between the two reference conditions is less than
50 %RH, adjustment cannot be done.
17.
The adjustment is done. Press BACK and EXIT to return to the
basic display.
18.
Turn off the MI70 and detach the connection cable.
LiCl-NaCl Adjustment
This adjustment is done using relative humidity references 11.3 % RH
(LiCl) and 75.5 % RH (NaCl).
Follow steps 1 to 7 on page 30 and continue as follows:
8.
Remove the filter from the transmitter's probe and insert the
probe head into the LiCl salt chamber.
9.
Press ADJUST to continue adjusting.
32 __________________________________________________________________ M210701EN-D
Chapter 4 ______________________________________________________________ Maintenance
10.
Choose LiCl-NaCl autom. from the MI70 adjustment menu and
press SELECT. Press OK to accept the note telling about
references.
11.
Press READY when the reading has stabilized in the LiCl salt
chamber (may take 30 minutes or more). You can follow the
stabilization from the GRAPH display.
12.
Remove the probe from the LiCl salt chamber and insert the
probe head into the NaCl salt chamber.
13.
Press READY when the reading has stabilized in the NaCl salt
chamber (may take 30 minutes or more). You can follow the
stabilization from the GRAPH display.
14.
Confirm the adjustment by pressing YES (by pressing NO you
return to adjustment mode display and no changes are made).
15.
The adjustment is done. Press BACK and EXIT to return to the
basic display.
16.
Turn off the MI70 and detach the connection cable.
Temperature Field Check and Adjustment by Using a
Calibrated Reference Probe
Follow steps 1 to 7 on page 30 and continue as follows:
NOTE
8.
Check that the probes are located in equal conditions and wait
until the readings are stabilized (can take 30 minutes or more). If
you are close to the probes, do not breathe in their direction.
9.
Press ADJUST to continue adjusting.
10.
Press To same as TII/I, press SELECT. (MI70 always recognizes the
port to which the HMP70 series probe is connected).
11.
Confirm by pressing YES.
If the temperature difference between the reference probe and HMT100
is too large, the adjustment cannot be done (HM70 will notify you of
this). The available reserve for T adjustment of HMT100 depends on
the initial temperature calibration of the unit.
12.
Adjustment is done. Press BACK and EXIT to return to the basic
display.
13.
Switch off the MI70 and detach the calibration cable from MI70
and from the transmitter.
VAISALA _______________________________________________________________________ 33
User's Guide ______________________________________________________________________
Adjustment with HMI41
You can check and adjust the HMT100 relative humidity measurement
with the HMI41 indicator and HMP41/45/46 probes. A HMI41connection cable is needed. Vaisala order code: 25917ZZ.
There are three adjustment modes available: offset (dry point), gain (wet
point), and two-point adjustment. All of these can be performed using the
HMI41 either as a reference meter (for example when the transmitter is
mounted in an air-conditioning channel) or only as a terminal for
visualizing and setting the transmitter's RH reading.
Offset and gain adjustments are performed the same way and differ only
in internal calculations. Select offset adjustment when the reference
humidity is < 65 %RH and gain adjustment when the reference humidity
is ≥ 65 %RH. Two-point adjustment is more accurate, and includes both
offset and gain corrections. For performing two-point adjustment, you
need two separate measurement points with a difference of at least 50
%RH between them.
Follow the general directions of connecting the HMI41 to the HMT100
and selecting the HMI41 calibrator function and then continue according
to the chosen adjustment method.
1
3
2
0505-187
Figure 17
Location of the HMI41 Calibration Connector
The following numbers refer to Figure 17 above:
1
2
3
=
=
=
HMI41 indicator
EXT connector
25917ZZ connection cable
34 __________________________________________________________________ M210701EN-D
Chapter 4 ______________________________________________________________ Maintenance
Connections and Selecting the Calibrator Function
1.
To select the calibrator function from the HMI41, press the ON/OFF
button until you can see some text on the display. Then release the
ON/OFF button and within 1 ... 2 seconds, press both ENTER and MODE
buttons until the following display appears:
2.
After a few seconds, the display changes to show the following:
°C
set
If the basic settings (display units, automatic power off function,
display quantities, and pressure) have to be changed, please refer
to the HMI41 Operating Manual. Otherwise, press ENTER
repeatedly until the following display appears:
set
To calibrate the HMT100, select number 3 with buttons ▲
(number up) and ▼ (number down) and then press ENTER.
3.
Next the baud rate appears on the display. Use the baud rate 19200
(= 19.2 on the HMI41 display) with the HMT100 series. If the
baud rate on the HMI41 display is not correct, change it with
buttons ▲ and ▼. When the baud rate is correct, press ENTER, and
the serial communications settings display appears. The correct
settings for HMT100 series are: N, 8, 1. If needed, change the
settings with buttons ▲ and ▼ until they are correct, press ENTER,
and then ON/OFF.
These setting are stored in the HMI41 memory; when the HMI41 is
turned on again, it will automatically wake up as a calibrator for digital
transmitters with these serial line settings. After making these settings,
continue with the adjustment and follow the directions of the chosen
adjustment method.
VAISALA _______________________________________________________________________ 35
User's Guide ______________________________________________________________________
Offset and Gain Adjustments
Offset and gain adjustments are performed in the same way (they differ
only in internal calculations), so this section is valid for both methods.
4.
Connect the 25917ZZ HMI41-connection cable to the SERVICE
PORT connector on the HMT100 motherboard (see Figure 9 on
page 22).
5.
Connect the other end of the connection cable to the EXT
connector located on the bottom of the HMI41 indicator (see
Figure 17 on page 34).
6.
Turn on both devices. Wait until the following display appears:
RH
7.
Select the appropriate adjustment mode with the ▲ and ▼
buttons. Select offset adjustment if the humidity is < 65 %RH
and gain adjustment if the humidity is ≥ 65 %RH:
RH
RH
or
Press ENTER to confirm the selection. A display similar to the
following appears:
RH
%
The next sections describe how to perform offset and gain adjustments in
two different ways.
HMI41 as a Reference Meter
The HMI41 humidity probe is used to show the correct humidity value
(be sure that the reference probe has previously been adjusted). Connect
the cable and select the appropriate adjustment method as previously
explained, and continue according to the following instructions.
8.
A display similar to the one below should be visible:
RH
%
Numbers on the first line indicate the transmitter reading, and
the numbers on the second line indicate the reference probe
reading.
36 __________________________________________________________________ M210701EN-D
Chapter 4 ______________________________________________________________ Maintenance
9.
Let the readings stabilize (may take 30 minutes or more). If you
prefer, you can change the display to show the difference in the
readings. Press HOLD and a display similar to the following
appears:
RH
%
The numbers on the first line indicate how much the transmitter
reading differs from that of the HMI41 reference probe. The
numbers on the second line indicate the reference probe reading.
You can return to the previous display by pressing HOLD again.
10.
When the readings have stabilized, press ENTER to conclude the
adjustment. When ENTER is pressed, the transmitter reading is
corrected to the reference probe reading. If the adjustment has
been succesful, the following display appears:
RH
11.
The data is now stored in the transmitter memory. If the
adjustment has not been succesful, the following display
appears:
RH
In this case, perform the adjustment again. Whether the
adjustment was succesful or not, the HMI41 always returns to
display the selected adjustment mode.
12.
After succesfully completing the adjustment, turn off the HMI41
and disconnect the cable.
HMI41 as a Terminal
The HMI41 can also be used for visualizing and setting the transmitter's
RH reading manually.
8.
A display similar to the one below should be visible:
RH
%
The numbers on the first line indicate the transmitter reading,
and the numbers on the second line indicate the HMI41 probe
reading.
VAISALA _______________________________________________________________________ 37
User's Guide ______________________________________________________________________
9.
Let the readings stabilize and press MODE. The following display
appears:
RH
%
set
The HMI41 now works only as a terminal for setting the
humidity reading. The numbers on the first line are blinking, and
the numbers on the second line indicate the transmitter reading.
10.
You can now set the blinking reading to the correct value (for
example, the equilibrium RH of a salt solution) with the buttons
▲ and ▼. Press ENTER to conclude the adjustment. If the
adjustment has been succesful, the following display appears:
RH
11.
The data is now stored in the transmitter memory. If the
adjustment has not been succesful, the following display
appears:
RH
In this case, perform the adjustment again. Whether the
adjustment was succesful or not, the HMI41 always returns to
display the selected adjustment mode.
12.
After succesfully completing the adjustment, turn off the HMI41
and disconnect the cable.
38 __________________________________________________________________ M210701EN-D
Chapter 4 ______________________________________________________________ Maintenance
Troubleshooting
Table 4 presents a summary of the error messages that may appear during
adjustment with the HMI41.
Table 4
Common Problems During Adjustment and Their
Remedies
Error Message
RH
Probable Cause
This message may
appear, for example, if
the difference between
the reference humidities
is too small
(< 50 %RH).
This message may
appear during
adjustment when the
HMI41 is trying to
contact the transmitter.
The connection cable is
not properly connected
or the serial line
settings of the HMI41
and the transmitter do
not correspond.
Remedy
Perform the adjustment
again.
Wait.
Check the connection of
the calibration cable.
Check that the serial line
settings in the HMI41
memory correspond to
those of the transmitter.
VAISALA _______________________________________________________________________ 39
User's Guide ______________________________________________________________________
Analog Output Tests
HMT100 has a built-in software function for testing the analog outputs.
To test the outputs, do the following:
1.
2.
Make sure the transmitter is not in adjustment mode.
Press the 75 % adjustment button (see Figure 13 on page 28).
This sets the output current/voltage level to the middle point of the
selected output range (specified when ordering the product). The
output stays at this level for about 30 seconds after the 75 %
adjustment button has been pressed.
Examples:
If you have specified 4 ... 20 mA analog output range, pressing the 75 %
adjustment button will set the current output at 12.0 mA for about 30
seconds.
For analog output range 0 … 1 V, pressing the 75 % adjustment button
will set the voltage output at 0.5 V for about 30 seconds.
40 __________________________________________________________________ M210701EN-D
Chapter 5 ___________________________________________________________ Troubleshooting
CHAPTER 5
TROUBLESHOOTING
This chapter describes error messages and provides contact information
for Technical Support and Vaisala Service Centers.
Error Mode
Current Output
In error mode the analog outputs switch to IOUT = 23 mA. Error mode
indication covers only transmitter body electronic functions. The
transmitter cannot indicate a faulty RH probe.
Voltage Output
Voltage output version has no error mode indication.
Technical Support
For technical questions, contact the Vaisala technical support:
E-mail
[email protected]
Fax
+358 9 8949 2790
VAISALA _______________________________________________________________________ 41
User's Guide ______________________________________________________________________
Return Instructions
If the product needs repair, please follow the instructions below to speed
up the process and to avoid extra costs to you.
1.
2.
3.
4.
5.
Read the section Warranty on page 9.
Contact a Vaisala Service Center or a local Vaisala representative.
The latest contact information and instructions are available from
www.vaisala.com. Addresses of the Service Centers are provided
on page 43.
Please have the following information on hand:
- serial number of the unit
- date and place of purchase or last calibration
- description of the fault
- circumstances in which the fault occurs/occurred
- name and contact information of a technically competent
person who can provide further information on the problem
Pack the faulty product in a strong box of adequate size, with
proper cushioning material to avoid damage.
Include the information specified in step 2 in the box with the
faulty product. Include a detailed return address as well.
Ship the box to the address specified by your Vaisala contact.
42 __________________________________________________________________ M210701EN-D
Chapter 5 ___________________________________________________________ Troubleshooting
Vaisala Service Centers
Vaisala Service Centers perform calibrations and adjustments as well as
repair and spare part services. See contact information below.
Vaisala Service Centers also offer accredited calibrations, maintenance
contracts, and a calibration reminder program. Do not hesitate to contact
them to get further information.
VAISALA _______________________________________________________________________ 43
User's Guide ______________________________________________________________________
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44 __________________________________________________________________ M210701EN-D
Chapter 6 ____________________________________________________________ Technical Data
CHAPTER 6
TECHNICAL DATA
This chapter provides the technical data of the product.
Specifications
Table 5
Relative Humidity Measurement Specifications
Property
Measurement range
Accuracy against factory standards
including non-linearity, hysteresis,
and repeatability
at +15 ... +25 °C
at 0 ... +40 °C
at -40 ... 0 °C and +40 ... +80 °C
Factory calibration uncertainty at
20 °C (68 °F)
Response time (90 %) at 20 °C in
still air
Humidity sensor
Table 6
Description / Value
0 ... 100 % RH
±1.7 %RH (0 ... 90 % RH)
±2.5 %RH (90 ... 100 % RH)
±(1.7 + 0.015 × reading) % RH
±(2.0 + 0.025 × reading) % RH
±1.0 %RH (0 ... 15 % RH)
±1.5 %RH (15 ... 78 % RH)
8 s with plastic grid
20 s with membrane filter
40 s with sintered filter
HUMICAP® 180
Temperature Measurement Specifications
Property
Measurement range
Accuracy at +20 °C (+68 °F)
Temperature sensor
Description / Value
-40 ... +80 °C (-40 ... 176 °F)
±0.2 °C (See Figure 18 on page 46)
Pt1000 IEC 751 ⅓ class B
VAISALA _______________________________________________________________________ 45
User's Guide ______________________________________________________________________
0505-247
Figure 18
Accuracy of Temperature Measurement
Table 7
Dewpoint Temperature (Calculated) Measurement
Specifications
Property
Measuring range
Accuracy
Table 8
Temp.
-20
-10
0
10
20
40
60
80
Table 9
Description / Value
-20 ... +80 °C (+4 ... 176 °F)
see Table 8 below
Accuracy of Dewpoint Temperature Measurement
Relative humidity
10
20
30
2.6 1.7 1.4
2.7 1.7 1.3
2.3 1.4 1.1
2.3 1.4 1.1
2.2 1.2 1.0
3.0 1.9 1.5
4.3 2.7 2.2
4.9 3.1 2.5
40
1.2
1.2
1.0
0.9
0.8
1.3
1.9
2.2
50
1.1
1.1
0.9
0.8
0.7
1.2
1.8
2.1
60
1.1
1.0
0.8
0.9
0.6
1.1
1.7
2.0
70
1.0
1.0
0.8
0.8
0.6
1.0
1.6
1.9
80
1.0
1.0
0.8
0.8
0.5
1.0
1.5
1.8
90
100
0.9
0.7
0.8
0.5
1.0
1.5
1.8
0.7
0.8
0.6
1.0
1.5
1.8
Operating Environment Specifications
Property
Operating temperature range
Transmitter body, no display
Transmitter body, with display
Sensor head
Storage temperature range
Electromagnetic compatibility
Description / Value
-40 ... +60 °C (-40 ... +140 °F)
-30 ... +60 °C (-22 ... +140 °F)
-40 ... +80 °C (-40 ... +176 °F)
-40 ... +60 °C (-40 ... +140 °F)
EN61326-1:1197+Am1:1998; +
Am2:2001; Generic Environment
46 __________________________________________________________________ M210701EN-D
Chapter 6 ____________________________________________________________ Technical Data
Table 10
Inputs and Outputs
Property
Current output version
Two-wire output signal
External loop load with 4 ... 20 mA
Description / Value
4 ... 20 mA (loop powered)
10 ... 35 VDC (RL = 0 ohms)
20 ... 35 VDC (RL = 500 ohms)
Voltage output version
Supply voltage
10 ... 35 VDC, 24 VAC
Current consumption,
35 VDC/24 VAC
Voltage output signals
max 12 mA
External load with voltage output
Table 11
0 ... 1 V, 0 ... 5 V, 0 ... 10 V,
0 ... X V, see order form
RL min. 10 kΩ
Mechanics Specifications
Property
Material
Housing
Probe
Mounting plate GM45160
Housing classification
Sensor protection
Plastic grid
Plastic grid with membrane filter
Sintered stainless steel filter
Connections
Probe cable lengths
Display (optional)
Description / Value / Order Code
ABS/PC plastic
chrome coated aluminum
ABS plastic
IP65 (NEMA 4)
DRW010522
DRW010525
HM46670SP
screw terminals 0.5 ... 1.5 mm²
3 m, 5 m, 10 m
10 m extension available
one line with changing (at 6 s
intervals) or fixed variables
VAISALA _______________________________________________________________________ 47
User's Guide ______________________________________________________________________
Table 12
Options and Accessories
Description
Sensor head HMP100
Humidity sensor
T-sensor PT1000
Filter plastic grid + membrane
Sintered stainless steel filter
Extension cable 10 m
Probe cable 0.1 m
Probe cable 3 m
Probe cable 5 m
Probe cable 10 m
Radiation shield
Rain shield with installation kit
Probe holder
Duct installation kit
Wall assembly plate (plastic)
Installation plate (aluminum)
Probe cover (protective cap used
with fixed probe)
Casing for probe
HMI41 connection cable
HM70 connection cable
Order Code
HMP100
Humicap180
18921
DRW010525
HM46670SP
DRW220095
HMP50Z010SP
HMP50Z300SP
HMP50Z500SP
HMP50Z1000SP
DTR502B
215109
215986
215619
GM45160
DRW010712
HM47329
HM47328
25917ZZ
211339
48 __________________________________________________________________ M210701EN-D
Chapter 6 ____________________________________________________________ Technical Data
Dimensions in mm (inches)
0505-188
Figure 19
Dimensions HMT100 Fixed Probe Model
VAISALA _______________________________________________________________________ 49
User's Guide ______________________________________________________________________
137.5 5.41
119 4.69
119 4.69
33.5 1.32
71 2.8
Ø 12 0.47
0505-189
Figure 20
Dimensions HMT100 Remote Probe Model
50 __________________________________________________________________ M210701EN-D
____________________________________________________________________ Technical Data
VAISALA _______________________________________________________________________ 51
www.vaisala.com
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