Adjustment with HMI41
USER'S GUIDE
®
Vaisala HUMICAP Humidity and
Temperature Transmitter Series
HMT100
M210701EN-B
PUBLISHED BY
Vaisala Oyj
P.O. Box 26
FIN-00421 Helsinki
Finland
Phone (int.): +358 9 8949 1
Fax:
+358 9 8949 2227
Visit our Internet pages at http://www.vaisala.com/
© Vaisala 2006
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............................................................................ 5
About This Manual ................................................................... 5
Version Information ............................................................... 5
Related Manuals ................................................................... 5
General Safety Considerations ............................................. 6
Feedback............................................................................... 6
Product Related Safety Precautions ...................................... 6
ESD Protection ......................................................................... 7
Recycling .................................................................................. 7
Trademarks ............................................................................... 8
License Agreement .................................................................. 8
Warranty.................................................................................... 9
CHAPTER 2
PRODUCT OVERVIEW................................................................................ 11
Introduction to the HMT100 Humidity and Temperature
Transmitter.............................................................................. 11
Product Description............................................................. 11
Fixed and Remote Probe Models ....................................... 12
Optional Display .................................................................. 12
HMT100 Transmitter Components...................................... 13
CHAPTER 3
INSTALLATION............................................................................................ 15
Mounting ................................................................................. 15
Wall Mounting ..................................................................... 15
With Plastic Wall Assembly Plate (Provided)................. 15
With Optional Aluminium 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
1
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User's Guide ______________________________________________________________________
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
Calibration and Adjustment...................................................28
Relative Humidity Adjustment Using the 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 .....................................................33
Temperature Field Check and Adjustment by Using a
Calibrated Reference Probe...........................................34
Adjustment with HMI41 .......................................................35
Connections and Selecting the Calibrator Function.......36
Offset and Gain Adjustments .........................................37
HMI41 as a Reference Meter ....................................38
HMI41 as a Terminal.................................................39
Troubleshooting..............................................................40
Analog Output Tests ..............................................................41
CHAPTER 5
TROUBLESHOOTING..................................................................................43
Error Mode...............................................................................43
Current Output.....................................................................43
Voltage Output.....................................................................43
Technical Support ..................................................................43
Return Instructions ................................................................44
Vaisala Service Centers .........................................................44
CHAPTER 6
TECHNICAL DATA ......................................................................................45
Specifications .........................................................................45
Dimensions in mm (inches)...................................................49
2
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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 ..................................................... 15
Plastic Wall Assembly Plate with Aluminium Installation Plate 16
HMT100 Installation with Rain Shield ...................................... 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 .......................... 35
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
3
Manual Revisions ....................................................................... 5
Related Manuals ........................................................................ 5
Wiring Table ............................................................................. 23
Common Problems During Adjustment and Their Remedies .. 40
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
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Chapter 1 ________________________________________________________ General Information
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 Code
M210701EN-A
M210701EN-B
Manual Revisions
Description
1st version, June 2005
2nd version, this manual, April 2006, wiring table
(Table 3) corrected
Related Manuals
Table 2
Manual Code
M210185en-B
M210297en-C
M210316en-A
5
Related Manuals
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
VAISALA______________________________________________________________________
User's Guide ______________________________________________________________________
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 e-mail: [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
6
Do not modify the unit. Improper modification can damage the
product or lead to malfunction.
_________________________________________________________________ M210701EN-B
Chapter 1 ________________________________________________________ General Information
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. 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.
7
VAISALA______________________________________________________________________
User's Guide ______________________________________________________________________
Trademarks
HUMICAP is a registered trademark of Vaisala.
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.
8
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Chapter 1 ________________________________________________________ General Information
Warranty
Vaisala hereby represents and warrants all Products
manufactured by Vaisala and sold hereunder to be
free from defects in workmanship or material
during a period of twelve (12) months from the date
of delivery save for products for which a special
warranty is given. If any Product proves however to
be defective in workmanship or material within the
period herein provided Vaisala undertakes to the
exclusion of any other remedy to repair or at its
own option replace the defective Product or part
thereof free of charge and otherwise on the same
conditions as for the original Product or part
without extension to original warranty time.
Defective parts replaced in accordance with this
clause shall be placed at the disposal of Vaisala.
Vaisala also warrants the quality of all repair and
service works performed by its employees to
products sold by it. In case the repair or service
works should appear inadequate or faulty and
should this cause malfunction or nonfunction of the
product to which the service was performed Vaisala
shall at its free option either repair or have repaired
or replace the product in question. The working
hours used by employees of Vaisala for such repair
or replacement shall be free of charge to the client.
This service warranty shall be valid for a period of
six (6) months from the date the service measures
were completed.
This warranty is however subject to following
conditions:
a) A substantiated written claim as to any alleged
defects shall have been received by Vaisala
within thirty (30) days after the defect or fault
became known or occurred, and
b) The allegedly defective Product or part shall,
should Vaisala so require, be sent to the works
of Vaisala or to such other place as Vaisala may
indicate in writing, freight and insurance
prepaid and properly packed and labelled,
unless Vaisala agrees to inspect and repair the
Product or replace it on site.
9
This warranty does not however apply when the
defect has been caused through
a) normal wear and tear or accident;
b) misuse or other unsuitable or unauthorized use
of the Product or negligence or error in storing,
maintaining or in handling the Product or any
equipment thereof;
c) wrong installation or assembly or failure to
service the Product or otherwise follow
Vaisala's service instructions including any
repairs or installation or assembly or service
made by unauthorized personnel not approved
by Vaisala or replacements with parts not
manufactured or supplied by Vaisala;
d) modifications or changes of the Product as well
as any adding to it without Vaisala's prior
authorization;
e) other factors depending on the Customer or a
third party.
Notwithstanding the aforesaid Vaisala's liability
under this clause shall not apply to any defects
arising out of materials, designs or instructions
provided by the Customer.
This warranty is expressly in lieu of and excludes
all other conditions, warranties and liabilities,
express or implied, whether under law, statute or
otherwise, including without limitation any implied
warranties of merchantability or fitness for a
particular purpose and all other obligations and
liabilities of Vaisala or its representatives with
respect to any defect or deficiency applicable to or
resulting directly or indirectly from the Products
supplied hereunder, which obligations and
liabilities are hereby expressly cancelled and
waived. Vaisala's liability shall under no
circumstances exceed the invoice price of any
Product for which a warranty claim is made, nor
shall Vaisala in any circumstances be liable for lost
profits or other consequential loss whether direct or
indirect or for special damages.
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10 _______________________________________________________________ M210701EN-B
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
Product Description
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.
At order time 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
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User's Guide ______________________________________________________________________
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)
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 order time). 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.
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Chapter 2 __________________________________________________________ Product Overview
HMT100 Transmitter Components
Figure 1 below illustrates the main features of HMT100. On the left is
shown a remote probe model without display and on the right is
shown a fixed probe model with the optional display. The numbers
and arrows indicate main components of the transmitters.
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
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14 _______________________________________________________________ M210701EN-B
Chapter 3 _______________________________________________________________ Installation
CHAPTER 3
INSTALLATION
Mounting
Wall Mounting
With Plastic Wall Assembly Plate (Provided)
1.
Attach the wall assembly plate to the wall with two screws.
2.
Press the transmitter down so that it slides down along the rails
of the mounting plate.
0505-171
Figure 2
Plastic Wall Assembly Plate
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User's Guide ______________________________________________________________________
With Optional Aluminium Wall Installation Plate
1.
Attach the aluminium plate to the wall.
2.
Attach the plastic wall assembly plate (provided) to the
aluminium plate with two screws.
3.
Press the transmitter down so that it slides down along the rails
of the wall assembly plate.
0505-339
Figure 3
Plastic Wall Assembly Plate with Aluminium
Installation Plate
The following numbers refer to Figure 3 above:
1
2
=
=
Plastic wall assembly plate (provided)
Aluminium wall installation plate (optional accessory, see
order form)
16 _______________________________________________________________ M210701EN-B
Chapter 3 _______________________________________________________________ Installation
Installation with Rain Shield
The rain shield with installation kit includes a metal mounting plate
and a rain shield for the transmitter. Vaisala order code: 215109.
0505-340
Figure 4
NOTE
HMT100 Installation with Rain Shield
1.
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.
2.
Fasten the plastic wall assembly plate (provided) to the metal
mounting plate with three screws.
3.
Fasten HMT100 Humidity and Temperature Transmitter to the
wall assembly plate by pressing the transmitter down so that it
slides down along the rails of the mounting plate.
4.
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
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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.
Fasten the probe to the installation support with two cable ties
(items 3 and 4 in Figure 5 below).
2.
Insert and attach the support to the radiation shield by tightening
the plastic nut (item 2 in Figure 5).
3.
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-B
Chapter 3 _______________________________________________________________ Installation
Duct Installation Kit
The duct installation kit includes a plastic pipe with a flange. Vaisala
order code: 210710. 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.
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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
=
=
=
HMP100
Duct installation kit
Probe cable
1.
Slide the probe cable through the duct installation kit plastic
pipe.
2.
Attach the probe cable to the HMP100 Humidity Probe.
3.
Attach probe assembly to the duct.
20 _______________________________________________________________ M210701EN-B
Chapter 3 _______________________________________________________________ Installation
Drilling Instructions for Duct Installation Kit
Ø3
.2
42
4
Ø2
3
2
1
0505-178
Figure 8
Drilling Instructions
The following numbers refer to Figure 8 on page 21:
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.
Use a 24 mm drill bit to drill a hole to the duct wall for the
humidity probe.
2.
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).
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Connections
0505-179
Figure 9
HMT100 Connection Board
The following numbers refer to Figure 9 above:
1
2
3
4
5
6
7
=
=
=
=
=
=
=
Service port
Adjustment buttons
Jumpers
Optional LCD
Field wire terminals
Connector for HMP100 Humidity Probe
Display backlight jumper (only in voltage output version);
factory setting: backlight ON)
1.
Open the transmitter cover by taking out the cover screws.
2.
Insert the power supply wires and the signal wires through the
cable bushing in the bottom of the transmitter.
22 _______________________________________________________________ M210701EN-B
Chapter 3 _______________________________________________________________ Installation
3.
Connect the wires as indicated in Figure 10 and in Table 3
below. Note that you must wire the transmitter according to the
type of transmitter (specified at order time; 2-wire current output
or 3-wire voltage output).
If an isolated output is required with current outputs then both
channels require their own power supply. CH1 is always required to
be powered (CH1 is the main output and the transmitter will not
operate if only CH2 is connected).
NOTE
4.
Close the cover and tighten the cover screws. The transmitter is
ready for use.
1
10...35V DC
10...35V DC
2
I
or
I
I
or
I
1 CH1 +
2 CH1 3
4
5 CH2 +
6 CH2 7
1 Us +
2 GND 3 CH1 +
4 CH2 +
10...35V DC
9...28V AC
U
U
5
6 SGND
7
0505-246
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 three-wire transmitter, make the wiring according to
item 2 in Figure 10.
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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.
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.
2.
Remove the damaged sensor and insert a new one.
3.
Recalibrate the transmitter.
4.
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.
Remove the filter (plastic grid or sintered stainless steel).
2.
Remove the damaged sensor and insert a new one.
3.
Recalibrate the transmitter.
4.
Replace a dirty filter to ensure a maximum lifetime and a fast
response for the sensor. Do not attempt to clean the filter.
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Removing and Fastening the Probe
Fixed Probe Model
Remove and replace the probe as follows:
1.
Loosen the plastic probe cover by carefully turning
it counter clock wise.
2.
Remove the probe cap and O-ring.
3.
Remove the probe cover. The probe is now exposed.
4.
Unscrew the small sleeve that is securing the probe
in place and pull out the probe.
5.
Replace the probe and screw back on the small
sleeve securing the probe tightly in its place.
6.
Replace the probe cover and screw it tightly back in
its place.
7.
Replace the O-ring and probe cap.
4
3
2
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-B
Chapter 4 ______________________________________________________________ Maintenance
Remote Probe Model
1.
Unscrew the small sleeve that is securing the probe in place at
the end of the probe cable and pull out the probe.
2.
Replace the probe and screw back on the small sleeve securing
the probe tightly in its place.
2
1
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
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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.
For calibration against saturated salt solutions, a calibrator kit is
needed. 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 44.
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.
Relative Humidity Adjustment
Using the 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 the instructions below:
1.
Remove the probe cover and the filter.
2.
Open the transmitter cover.
3.
Start the adjustment by pressing the ADJ button (on the
transmitter electronics motherboard). An indicator led lights up.
4.
Insert the probe into the measurement hole of the LiCl salt
chamber. The indicator led blinks evenly.
28 _______________________________________________________________ M210701EN-B
Chapter 4 ______________________________________________________________ Maintenance
5.
Wait for 30 minutes or until the indicator led stops blinking and
lits continuously. This means that the measurement has
stabilized.
6.
Press the LiCl 11 % button to adjust the 11 % condition.
7.
Insert the probe into the measurement hole of the NaCl salt
chamber. The indicator led starts to blink evenly.
8.
Wait for 30 minutes or until the indicator led stops blinking and
lits continuously. This means that the measurement is stabilized
9.
Press the NaCl 75 % button to adjust the 75 % condition.
10.
Now the transmitter returns to normal operation mode and the
indicator led is unlit.
11.
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 HM70-connection 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 7 first steps and continue according to the chosen
adjustment method.
0505-351
Figure 14
Location of the MI70 Probe and Cable Connector
Ports
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1.
Connect the 211339 HM70-connection cable to the SERVICE PORT
connector on the HMT100 motherboard (see Figure 9 on page
22).
2.
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).
3.
Turn on both devices (or just the HM70 if HMT100 is on
continuously).
4.
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.
5.
Press the ADJ button on the HMT100 motherboard to open the
adjustment mode. The indicator led on the HMT100
motherboard starts flashing.
From now on the adjustment is carried out using the MI70
indicator.
6.
Press OK to start adjustment.
7.
Check the environment settings if needed. Otherwise press NO.
Select RH or T adjustment. Continue according to the directions of
the desired adjustment method.
Field Checking and Adjustment Using a Calibrated
Reference Probe
Follow steps 1 to 7 on page 29 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 near 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-B
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 29 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, 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 (page 29) 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, 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 conditions 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 can not 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.
32 _______________________________________________________________ M210701EN-B
Chapter 4 ______________________________________________________________ Maintenance
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 (page 29) 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.
10.
Choose LiCl-NaCl autom. from the MI70 adjustment menu, 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 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.
VAISALA____________________________________________________________________ 33
User's Guide ______________________________________________________________________
Temperature Field Check and Adjustment by Using
a Calibrated Reference Probe
Follow steps 1 to 7 (page 29) 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 near the probes, do not breathe in their direction.
9.
Press ADJUST to continue adjusting.
10.
Press To same as TII/I, press SELECT. (MI70 recognizes always 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.
34 _______________________________________________________________ M210701EN-B
Chapter 4 ______________________________________________________________ Maintenance
Adjustment with HMI41
You can check and adjust the HMT100 relative humidity
measurement with the HMI41 indicator and HMP41/45/46 probes. A
HMI41-connection 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
VAISALA____________________________________________________________________ 35
User's Guide ______________________________________________________________________
Connections and Selecting the Calibrator Function
1.
To select the calibrator function from the HMI41, press 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.
36 _______________________________________________________________ M210701EN-B
Chapter 4 ______________________________________________________________ Maintenance
Offset and Gain Adjustments
Offset and gain adjustments are performed in the same way (they
differ only in internal calculations) so the following chapter 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 35).
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.
VAISALA____________________________________________________________________ 37
User's Guide ______________________________________________________________________
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.
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
38 _______________________________________________________________ M210701EN-B
Chapter 4 ______________________________________________________________ Maintenance
12.
In this case, perform the adjustment again. Whether the
adjustment was succesful or not, the HMI41 always returns to
display the selected adjustment mode.
13.
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.
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
VAISALA____________________________________________________________________ 39
User's Guide ______________________________________________________________________
12.
In this case, perform the adjustment again. Whether the
adjustment was succesful or not, the HMI41 always returns to
display the selected adjustment mode.
13.
After succesfully completing the adjustment, turn off the HMI41
and disconnect the cable.
Troubleshooting
Table 4 presents a summary of a few 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.
40 _______________________________________________________________ M210701EN-B
Chapter 4 ______________________________________________________________ Maintenance
Analog Output Tests
HMT100 has a built-in software function for testing the analog
outputs. To test the outputs, do the following:
1.
Make sure the transmitter is not in adjustment mode.
2.
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 pressing
the 75 % adjustment button.
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.
VAISALA____________________________________________________________________ 41
User's Guide ______________________________________________________________________
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42 _______________________________________________________________ M210701EN-B
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____________________________________________________________________ 43
User's Guide ______________________________________________________________________
Return Instructions
If the product needs repair, please follow the instructions below to
enable us to serve you better.
1.
Read the warranty information.
2.
Write a Problem Report with the.
3.
Please include with the transmitter:
- Serial number of the unit
- Date and place of purchase or last calibration
- Description of the fault
- Circumstances over which the fault occurred
- Name and contact information of a technically competent
person who can provide further information on the problem
- A detailed return address with your preferred shipping
method
4.
Pack the faulty product using an ESD protection bag of good
quality with proper cushioning material in a strong box of
adequate size.
5.
Contact the Vaisala Service Center in your region and send the
box to the addresses below:
Vaisala Service Centers
44 _______________________________________________________________ M210701EN-B
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-B
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 aluminium
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 10m
Probe cable 0.1 m
Probe cable 3m
Probe cable 5m
Probe cable 10m
Radiation shield
Rain shield with installation kit
Probe holder
Duct installation kit
Wall assembly plate (plastic)
Installation plate (aluminium)
Probe cap
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-B
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-B
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