Vaisala HUMICAP HM70 User manual

Vaisala HUMICAP HM70 User manual

USER'S GUIDE

Vaisala HUMICAP

®

Hand-Held

Humidity and Temperature Meter

HM70

M210297EN-D

PUBLISHED BY

Vaisala Oyj

P.O. Box 26

FIN-00421 Helsinki

Finland

Phone (int.): +358 9 8949 1

Fax:

Visit our Internet pages at http://www.vaisala.com/

+358 9 8949 2227

© 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

Safety......................................................................................... 5

Recycling .................................................................................. 5

Warranty.................................................................................... 6

CHAPTER 2

PRODUCT DESCRIPTION ............................................................................ 7

Vaisala HUMICAP

®

Hand-Held Temperature and Humidity

Meter HM70 ............................................................................... 7

Display Parameters .................................................................. 7

CHAPTER 3

PREPARATIONS BEFORE USE................................................................... 9

Installing and Recharging of Batteries .................................. 9

Turning ON the Device........................................................... 10

CHAPTER 4

TAKING MEASUREMENTS ........................................................................ 11

Beware of Temperature Differences..................................... 12

CHAPTER 5

BUTTONS, DISPLAYS AND MENUS.......................................................... 13

Buttons and Navigation ......................................................... 13

Basic Display .......................................................................... 14

Graphical Display ................................................................... 15

Menus ...................................................................................... 15

CHAPTER 6

SETTINGS .................................................................................................... 17

Pressure Setting..................................................................... 17

Display Settings ..................................................................... 18

Quantities and Units............................................................ 18

Rounding ............................................................................. 18

Hold/Save Display............................................................... 19

Graphic History.................................................................... 19

User Interface ......................................................................... 20

Selecting Language ............................................................ 20

Automatic Power OFF......................................................... 21

Changing Shortcut Keys ..................................................... 21

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User's Guide _______________________________________________________________________

Button Click and Backlight on Button Press ........................22

Setting Date and Time.........................................................22

Device Information .................................................................23

Reverting Factory Settings ..................................................23

CHAPTER 7

RECORDING DATA .....................................................................................25

Recording ................................................................................25

Stopping Recording ...............................................................26

Viewing Recorded Data..........................................................26

Checking Memory Status.......................................................27

Deleting All Recorded Files ...................................................27

MI70 Link Program for Transferring Recorded

Data to PC................................................................................28

MI70 Link Program for Real-Time PC Monitoring................28

CHAPTER 8

OTHER FUNCTIONS....................................................................................29

Setting Alarm Levels ..............................................................29

Chemical Purge (Optional) ....................................................30

Turning Chemical Purge ON ...............................................30

Sensor Preheat (Optional) .....................................................32

Turning Sensor Preheat ON/OFF........................................33

CHAPTER 9

CALIBRATION AND ADJUSTMENT OF TRANSMITTERS .......................35

HM70 in Checking and Adjusting..........................................35

Calibration Cables ..................................................................35

Calibration and Adjustment of HMD/W 60/70, HMD/W 20/30

and HMP130 Series Transmitters..........................................36

Calibration and Adjustment of HMT100 Series

Transmitters ............................................................................37

Field Checking and Adjustment Using a Calibrated

Reference Probe .................................................................38

One-Point Adjustment Using a Calibrator ...........................39

Two-Point Adjustment Using a Calibrator ...........................39

LiCl-NaCl Adjustment ..........................................................40

Calibration and Adjustment of HMP230/240 Transmitters

and HMM210 Modules ............................................................41

Field Checking and Adjustment of Humidity by Using a

Calibrated Reference Probe................................................43

1-Point Humidity Adjustment by Using a Calibrator ............43

2-Point Adjustment by Using a Calibrator ...........................44

Calibration and Adjustment of HMT320 Series

Transmitters ............................................................................45

Field Checking and Adjustment by Using a Calibrated

Reference Probe .................................................................46

1-Point Adjustment by Using a Calibrator ...........................46

2-Point Adjustment by Using a Calibrator ...........................47

2 ____________________________________________________________________ M210297EN-D

_________________________________________________________________________________

Calibration and Adjustment of HMT330 Series

Transmitters............................................................................ 48

Field Checking and Adjustment by Using a Calibrated

Reference Probe ................................................................. 49

1-Point Adjustment by Using a Calibrator ........................... 49

2-Point Adjustment by Using a Calibrator ........................... 50

LiCl-NaCl Adjustment.......................................................... 51

Field Checking of DMW19 Transmitter ................................ 52

CHAPTER 10

MEASURING OTHER PARAMETERS SIMULTANEOUSLY ..................... 53

CHAPTER 11

ANALOG OUTPUT CONNECTION ............................................................. 55

Selecting and Scaling the Analog Output ........................... 55

CHAPTER 12

CALIBRATION AND ADJUSTMENT OF HM70 SERIES PROBES ........... 57

General Information about Calibrations .............................. 57

Relative Humidity Adjustment .............................................. 58

LiCl-NaCl Automatic Adjustment......................................... 58

2-Point Adjustment.............................................................. 58

1-Point Adjustment.............................................................. 59

Temperature Adjustment....................................................... 60

1-Point Adjustment.............................................................. 60

2-Point Adjustment.............................................................. 61

Last Adjustment Date ............................................................ 61

CHAPTER 13

ERROR MESSAGES.................................................................................... 63

CHAPTER 14

MAINTENANCE ........................................................................................... 65

Changing the Filter................................................................. 65

Changing the Battery Pack.................................................... 65

Vaisala Service Centers......................................................... 66

CHAPTER 15

TECHNICAL SPECIFICATIONS.................................................................. 67

Probes HMP75, HMP76 and HMP77...................................... 67

Measured Variables ............................................................ 67

Relative Humidity ........................................................... 67

Temperature................................................................... 68

Calculated Variables .............................................................. 68

Typical Ranges.................................................................... 68

Accuracies of Calculated Variables ............................... 69

Accuracy of Dewpoint Temperature °C ......................... 69

Accuracy of Mixing Ratio g/kg........................................ 69

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User's Guide _______________________________________________________________________

Accuracy of Wet Bulb Temperature °C ..........................70

Accuracy of Absolute Humidity g/m³ ..............................70

General ....................................................................................70

MI70 Indicator..........................................................................71

Indicator General .................................................................71

Battery Pack ...................................................................72

General about Vaisala Hand-Held Humidity and

Temperature Meter HM70 ..............................................72

Electromagnetic Compatibility ........................................72

Accessories.............................................................................73

Dimensions in mm (inches)...................................................74

4 ____________________________________________________________________ M210297EN-D

Chapter 1 _________________________________________________________ General Information

CHAPTER 1

GENERAL INFORMATION

Safety

Throughout the manual, important safety considerations are highlighted as follows:

WARNING

Warning alerts you to a potential 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

Recycling

Note highlights important information on using the product.

Recycle all applicable material.

Dispose of batteries and the unit according to statutory regulations.

Do not dispose of with regular household refuse.

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User's Guide _______________________________________________________________________

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.

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 of 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.

6 ____________________________________________________________________ M210297EN-D

Chapter 2 _________________________________________________________ Product Description

CHAPTER 2

PRODUCT DESCRIPTION

Vaisala HUMICAP

®

Hand-Held Temperature and

Humidity Meter HM70

HM70 consists of two main units: MI70 indicator and

HMP75/HMP76/HMP77 probe. HM70 Hand-held humidity meter incorporates Vaisala's advanced HUMICAP

®

technology which enables reliable and high performance humidity measurement.

Vaisala HM70 is delivered with a factory calibration certificate.

Display Parameters

- RH relative humidity (% RH)

- T temperature (

°C/°F)

- T

-

T d

: dewpoint temperature

-

d/f

: dewpoint/frostpoint

1)

a : absolute humidity (g/m

temperature (

°C/°F)

2)

3

(

°C/°F)

/ gr/ft

3

)

- x : mixing ratio (g/kg / gr/lb)

-

T w

: wetbulb temperature (

°C/°F)

-

H

-

2

O: humid air volume/ dry air volume (ppm)

pw: water vapour pressure (hPa/ lb/in

2

)

- pws: saturation water vapour pressure(hPa/ lb/in

2

- h : enthalpy (kJ/kg / Btu/lb)

)

-

a w

: water activity

1)

T d/f

shows dewpoint temperature above the freezing point (0

°C/32

2)

°F) and frostpoint temperature T f

(dewpoint over ice) below the freezing point.

T d

shows dewpoint over water throughout the entire measurement range.

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User's Guide _______________________________________________________________________

1 MI70 indicator

2 Recharger connector

3 Connector ports for probes and cables

4 Calibration button under the screw

5 Probe HMP75/76/77

6 Probe filter

1

Port I 3

6

Port II

2

Power ON/OFF

5

4

HMP75 PROBE

Basic probe for relative humidity and temperature measurement

Preheat and chemical purge options available (HMP75B).

HMP76 PROBE

Rugged probe with a long stainless steel shaft. Preheat and chemical purge options available (HMP76B).

HMP77 PROBE

Cable probe for industrial processes up to 180

°C.

Preheat and chemical purge options available (HMP77B).

8 ____________________________________________________________________ M210297EN-D

Chapter 3 _____________________________________________________ Preparations Before Use

CHAPTER 3

PREPARATIONS BEFORE USE

Installing and Recharging of Batteries

1.

2.

If you are using alkaline batteries, unscrew the back plate of the indicator and insert the alkalines. If HM70 is ordered with rechargeable battery pack, it is already in place as shipped from the factory.

Recharge the battery pack as follows: Plug in recharger connector to the base of the indicator and connect the recharger to wall socket. A battery symbol in corner of display starts to roll.

- It is not recommended to use HM70 during the first recharging.

Later on HM70 can be used while recharging.

- Duration of recharging depends on the charge level of the battery pack being 4 hours typical. The recommended first recharging time is 6 hours.

3.

The battery pack is full when the battery symbol stops rolling.

4.

Disconnect the recharger.

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User's Guide _______________________________________________________________________

Turning ON the Device

1.

2.

3.

4.

5.

Connect the probe to the either of the base connectors of the indicator.

Press button.

Select the language by using buttons. Confirm by pressing

SELECT

. You can select the language later as well, see

page 20.

To change the date, select

Date

and press

SET.

Change the date by using any of the buttons. To confirm the date, press

OK

. The default date presentation format is:

year-monthdate

. If you want to change the format, see page 22.

To change the time, select

Time

and press

SET.

Change the time by using arrow buttons. To confirm the time, press

OK

.

The default time presentation format is 24-hour clock. If you want to use 12-hour clock, select

12-hour clock

, press

ON.

6.

Press

EXIT.

To check and change the pressure setting, select

YES

. Otherwise select

NO,

basic display appears.

10 ___________________________________________________________________ M210297EN-D

Chapter 4 _______________________________________________________ Taking Measurements

CHAPTER 4

TAKING MEASUREMENTS

CAUTION

1.

2.

3.

See Chapter 3 Preparations Before Use if you are starting the HM70

for the first time, otherwise follow instructions below:

4.

5.

6.

7.

Connect the probe to MI70-indicator.

Press

POWER ON/OFF

button.

If you have a chemical purge option in your probe (HM70 series probe versions B), remember to carry out chemical purge

regularly, see page 30.

In case there is a risk for condensation, use the optional preheat

(HM70 series probe versions B) when installing the probe, see

page 32.

Install the probe to the measuring position. If measuring in

pressurized processes, see the instructions on page 17.

Before measurements, ensure that the air pressure setting of

HM70 is correct (see page 17).

The basic display opens, let the reading stabilize.

If you need to disconnect the probe from the indicator, first press

POWER ON/OFF

button to turn the indicator OFF. This ensures that all settings and data are saved properly.

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User's Guide _______________________________________________________________________

Beware of Temperature Differences

In humidity measurement and especially in calibration it is essential that temperature of the probe and measuring environment is the same.

Even a small difference in temperature between the environment and the probe causes an error. As the curve below shows, if the temperature is +20 °C and the relative humidity 100 %RH, a difference of ±1 °C between the environment and the probe causes an error of ±6 %RH. When the humidity is 90 %RH, the corresponding error is ±5.4 %RH.

A temperature difference of a few degrees can also cause water to condense on the sensor surface. HUMICAP

®

®

sensor starts to function normally as soon as the water has evaporated. If the condensed water is contaminated, the life span of the probe may shorten and calibration

may change. See also information about sensor preheat, page 32.

10

9

8

7

6

5

4

3

2

1

0

-40 -20 0 20 40 60 80 100

Temperature (°C)

Measurement error at 100 %RH when the difference between the ambient and sensor temperature is 1 °C.

12 ___________________________________________________________________ M210297EN-D

Chapter 5 __________________________________________________Buttons, Displays and Menus

CHAPTER 5

BUTTONS, DISPLAYS AND MENUS

Buttons and Navigation

To open a menu view

1. Press an arrow button

2. Press this shortcut button

Shortcut buttons

Arrow buttons

Power ON/OFF

Press down the

POWER ON/OFF

button until the indicator turns on/off.

Press the

SHORTCUT

buttons to activate the function shown above the button.

Press any of the

ARROW

buttons to open the

MENUS

. In the

MENUS

you can navigate with

ARROW

buttons.

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User's Guide _______________________________________________________________________

Basic Display

5 6

1

2

3

4

1.

Selected quantities. Up to three of the quantities can be selected at a time.

2.

- RH relative humidity (% RH)

- T temperature (ºC/ ºF)

- T

-

T d/f d

: dewpoint/frostpoint

1

temperature (ºC/ ºF)

: dewpoint temperature

2)

(ºC/ ºF)

- a : absolute humidity (g/m

3

/ gr/ft

3

)

- x : mixing ratio (g/kg / gr/lb)

-

T w

: wetbulb temperature (ºC/ ºF)

-

H

2

O: humid air volume/ dry air volume (ppm)

- pw: water vapour pressure (hPa/ lb/in

2

)

- pws: saturation water vapour pressure(hPa/ lb/in

2

)

- h : enthalpy (kJ/kg / Btu/lb)

-

a w

: water activity

Shortcut button

Graphic

1

changes display into curve mode

3.

Shortcut button

Hold/Sa

1

freezes display and you may save the reading into the memory.

4.

Shortcut button

Record

1

takes you to the

Recording/Viewing

menu.

5.

State of battery.

6.

Pressure setting.

1

Graphic, Hold/Sa

and

Record

-functions above the shortcut buttons are set in the factory. You can change them to refer other functions (see page

21).

14 ___________________________________________________________________ M210297EN-D

Chapter 5 __________________________________________________Buttons, Displays and Menus

Graphical Display

Graphical display shows you the measurements in a form of curve.

From the curve you can examine the data trend and history of the last minutes. Graphical display shows firstly the curve of the uppermost quantity shown in a basic display.

1.

In basic display, press

Graphic or (alternatively open the

MENU,

select

Display,

select

Graphic history

2.

Graphical display opens. More information on page 19

Graphic history

.

3.

Press

BACK

to return to the basic display.

Menus

In the menus you can change settings and select the functions.

1.

2.

3.

Open the main menu by pressing any of the buttons.

Press

OPEN

within 5 seconds. The basic display returns if you do not open the

MENU

shortly. If this happens, begin with the item

1 again.

Move in the menus by using buttons.

4.

5.

Select the item with buttom.

Press to return to the earlier level.

6.

EXIT

returns back to normal operation.

Main menu Display menu

Functions menu Recording/Viewing menu

Environment menu Settings menu

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This page intentionally left blank.

16 ___________________________________________________________________ M210297EN-D

Chapter 6 ___________________________________________________________________Settings

CHAPTER 6

SETTINGS

Pressure Setting

In pressurized environments, the actual process pressure value shall be set to HM70. The pressure can be given in the following units:

hPa: Absolute pressure given in the unit of hPa.

barg

:

Gauge pressure given in the unit of bar. Indicates the pressure difference between normal atmospheric pressure and the actual process pressure.

bara

:

Absolute process pressure given in the unit of bar.

psia

:

Absolute pressure given in the unit of psi.

Follow the instructions below:

1.

Open the

MENU;

press

OPEN

2.

Select

ENVIRONMENT

with and press

.

3.

Press

UNIT

to change the pressure unit. Default unit is hPa.

4.

Press

SET

to set the ambient pressure value.

5.

Set the pressure value by using buttons

.

Press

+/-

to change the sign of the pressure value. Press

OK

to save the value.

6.

Press

EXIT

to return to the basic display.

VAISALA________________________________________________________________________ 17

User's Guide _______________________________________________________________________

Display Settings

Quantities and Units

All the quantities and units are shown in page 7.

1. Open the

MENU;

press

OPEN.

2. Select

Display

, press

.

3. Select

Quantities and units

, press

4. To select a quantity, move on the quantity you want by using the arrow buttons, press

SELECT

.

5. To change the unit, move on the quantity you want by using the arrow buttons, then press

UNIT .

6. To hide a quantity, move on the quantity you want to hide by using the arrow buttons, then press

HIDE.

7. Press

EXIT

to return to the basic display.

8. If asked, press

YES,

if you want to check environment settings, otherwise press

NO

.

Rounding

You can turn on the decimal display by using the

Rounding

function.

The default setting is rounding off .

1. Open the

MENU:

press

OPEN

2. Select the

Display

, press

3. Select

Rounding.

4. Press

ON

to have rounding on. Press

OFF

to deactivate rounding (two decimal display).

5. Press

EXIT

to return to the basic display.

18 ___________________________________________________________________ M210297EN-D

Chapter 6 ___________________________________________________________________Settings

Hold/Save Display

Hold/Save function enables you to freeze a certain display reading.

This reading can be saved into the memory.

1.

Open

MENU:

press

OPEN.

2. Select

Display

, press

3. Select

Hold/Save display.

4. Press

HOLD

to freeze the display. The frozen measurement data is displayed.

5. Press

SAVE

to save the reading and

CANCEL

to return to the menu.

6. You can save several readings with

HOLD-SAVE

function. The data points are identified on the basis of the saving date and time. All the individual readings (data points) are stored in a same file marked with . The file remains in the indicator memory even if the indicator is switched OFF.

7. To view the saved readings, press

Record

, select

View recorded data,

press .

8.

Select the file marked with , press . Now you can see the saved data readings. Press

TIMES

to see the recording timestamps.

9. Press

EXIT

to return to the basic display.

Graphic History

Graphic history shows the data curve of the last hour. To see longer graphs, use the data recording function to save the data and then view it as a graph.

1. Open the

MENU:

press

OPEN

.

2. Select

Display

, press

3. Select

Graphic history,

press

SHOW

to have a graphical history display.

4. To get the statistical info on the graph area (minimum, maximum and mean values), press

INFO.

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User's Guide _______________________________________________________________________

5.

To get the curve of the other selected quantities, press

NEXT.

To get the curves of the all quantities, press

NEXT

until text

ALL is shown instead of NEXT. Then press

ALL

.

6.

To zoom in the curve, press the arrow button . To zoom out, press the button . To move the curve in horizontal directions, press the buttons .

7.

Press

BACK

and

EXIT

to return to the basic display.

User Interface

→ →

Selecting Language

You can select any of the following languages as an user interface language: English, German, French, Finnish, Spanish or Swedish.

1.

Open the

MENU:

press

OPEN

.

2.

Select

Settings

, press .

3.

Select

User interface,

press

.

4.

Select

Language

, press

SET.

5.

Select the language you want, press

SELECT

.

6.

Press

EXIT

to return to the basic display.

If you accidentally select a wrong language, first go back to the basic display by pressing rightmost key as many times as required, then go to the language selection menu by pressing: , middle key

, , , middle key.

20 ___________________________________________________________________ M210297EN-D

Chapter 6 ___________________________________________________________________Settings

Automatic Power OFF

As shipped from factory, HM70 has a default setting which turns the power off automatically after 15 minutes of inactivity. This is to conserve the battery. In case you want to change the inactivity time setting to 60 minutes or turn off the automatic power off function, follow the instructions.

1.

Open the

MENU:

press

OPEN.

2.

Select

Settings

, press

3.

Select

User interface,

press

.

4.

Select

Auto power off

, press

SET.

5.

Select the choice you want, press

SELECT

.

6.

Press

EXIT

to return to the basic display.

Changing Shortcut Keys

As a default, the three shortcut keys refer to the functions

Graphic

,

Hold/Save

and

Record.

If needed, a shortcut for the functions can be changed to correspond to your needs.

1.

Open the

MENU:

press

OPEN.

2.

Select

Settings

, press .

3.

Select

User Interface,

press

.

4.

Select

Program shortcut keys

, press

START.

5.

Press the shortcut key you want to change, e.g.

Hold/Save.

6.

If you want to replace

Hold/Save

with Chemical purge-function

(as an example), select

Chemical Purge

by using arrow buttons

(

Functions) Chemical Purge

, press

SELECT

. Answer

YES

to confirm your selection, otherwise answer

NO

and continue from item 4.

7.

Press

EXIT

to return to the basic display.

Hold/Save -shortcut key replaced by Chemical purge -shortcut key

VAISALA________________________________________________________________________ 21

User's Guide _______________________________________________________________________

Button Click and Backlight on

Button Press

1.

Open the

MENU:

press

OPEN.

2.

Select

Settings

, press .

3.

Select

User interface,

press

.

4.

To turn OFF or ON sound effect while pressing the buttons, select

Key Click

and press

ON/OFF

.

5.

To turn OFF and ON backlight while pressing the buttons, select

Backlight on key

press

ON/OFF

.

6.

Press

EXIT

to return to the basic display.

Setting Date and Time

To have correct date and time in recorded data files, set the date and time according to the following instructions.

1.

Open the

MENU:

press

OPEN.

2.

Select

Setting

, press .

3.

Select

Date and time

, press

.

4.

To change the date, select

Date

and press

SET.

Change the date by using arrow buttons. To confirm the date, press.

OK

. The default date presentation format is year-month-date, e.g.2002-

06-05. If you want to change the format, select

Date format: Y-M-D

, press

SET

, select either

D.M.Y

or

M/D/Y

, press

SELECT .

5.

To change the time, select

Time

and press

SET.

Change the time by using arrow buttons. To confirm the time, press

OK.

The default time presentation format is 24-hour clock. If you want to change the format, select

12-hour clock

, press

ON/OFF.

6.

Press

EXIT.

22 ___________________________________________________________________ M210297EN-D

Chapter 6 ___________________________________________________________________Settings

Device Information

The basic information about the indicator and the probe is found as follows:

1.

Open the

MENU:

press

OPEN

2.

Select

Settings

, press .

3.

Select

Device information,

press

SHOW.

4.

The first display gives the information on the MI70 indicator.

Press

MORE

to get the information on the probe. Press

OK

and

EXIT

to return to the basic display.

MI70 indicator information

Probe type information

Reverting Factory Settings

Factory settings can be reverted to clear all changed settings and data memory of the indicator. Reverting factory settings does not effect on probe calibration.

1.

Open the

MENU:

press

OPEN.

2.

Select

Settings

, press

.

3.

Select

Factory settings,

press

REVERT.

Press

YES

to confirm the reverting.

4.

The power turns off automatically. When switching on again, the factory settings are reverted. You shall set the language, date and time again. See Chapter 3.

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24 ___________________________________________________________________ M210297EN-D

Chapter 7 _____________________________________________________________Recording Data

CHAPTER 7

RECORDING DATA

Recording

2.

3.

4.

You can record measurement data and view the recorded data on the display.

1.

Press the shortcut

Record, (

alternatively open the

MENU,

select

Recording/Viewing)

.

Select

Record data

, press

.

To change interval, select

Interval,

press

SET.

Select the measurement interval with arrow buttons.

Measurement intervals and the maximum recording times are shown in the table below.

Recording interval

1 s

5 s

15 s

30 s

1 min

5 min

15 min

30 min

1 h

3 h

12 h

Maximum recording time (memory full)

1 quantity

45 min

3 h

11 h

22 h

45 h

9 days

28 days

56 days

113 days

339 days

1359 days

2 quantities

22 min

113 min

5 h

11 h

22 h

4 days

14 days

28 days

56 days

169 days

678 days

3 quantities

15 min

75 min

3 h

7 h

15 h

3 days

9 days

18 days

37 days

112 days

451 days

VAISALA________________________________________________________________________ 25

User's Guide _______________________________________________________________________

5.

Press

SELECT.

6.

To set the recording duration, select

Duration

, press

SET.

7.

Select the recording duration (1 min, 5 min, 15 min, 30 min, 1 h, 3 h, 12 h, 24 h, 7 d, 30 d, memory full) with arrow buttons and press

SELECT.

8.

Start recording: select

Start/Stop recording

, press

START.

If you chose 'Memory full', you see the maximum recording time on the display. You can also delete files in order to empty the memory. Press

START

again to accept maximum recording time.

9.

You can switch the HM70 off during recording to save battery.

Display message tells you that recording continues undisturbed even when power is off. If the indicator is switched off during recording, the progress bar is shown on the display every

10 seconds (all the time, if charger is connected). This bar shows the amount of recorded data.

CAUTION

Do not disconnect the probe when the data recording is on, even if the indicator is off. This may cause loss of recorded data.

Stopping Recording

1. To stop recording press

Record

, select

Record data

and press , select

Start/Stop recording

and press

STOP.

2. Now you can go and see the recorded file by selecting

SHOW

.

You can save individual measurement data points with

Hold/Save

function described in page 19.

Viewing Recorded Data

1.

Open the

MENU:

press

OPEN .

2.

Select

Recording/Viewing

, press

.

3.

Select

View recorded data,

press .

26 ___________________________________________________________________ M210297EN-D

Chapter 7 _____________________________________________________________Recording Data

4.

Select the file you want to view, press . The files are identified according to the starting date and time of recording.

5.

Press

GRAPH

to get the graphical view, press

TIMES

to get the recording timestamps (press

VALUES

to go back the recorded values).

6.

Press

EXIT

to return to the basic display.

Checking Memory Status

You can check how much there is free space in the memory.

1.

Open the

MENU:

press

OPEN .

2.

Select

Recording/Viewing

, press

.

3.

Select

Memory status,

press

SHOW

to see the amount of memory in use and the estimated free space.

4.

To return to the basic display, press

OK

and

EXIT.

Note that the estimate of the free space is calculated for current number of active quantities. If you change the displayed quantities, the estimate is different.

Deleting All Recorded Files

The data memory can be cleared as follows:

1.

Open the

MENU:

press

OPEN.

2.

Select

Recording/Viewing

, press .

3.

Select

Clear data memory,

press

CLEAR

.

Press

YES

to confirm deletion of all recorded data files.

4.

To return to the basic display, press

EXIT.

VAISALA________________________________________________________________________ 27

User's Guide _______________________________________________________________________

MI70 Link Program for Transferring Recorded

Data to PC

The recorded data can be transferred to a PC by using MI70 Link program.

MI70 Link program can be ordered from Vaisala, see list of

accessories on page 73. You can examine the recorded data easily in

Windows environment and transfer it further to a spreadsheet program

(such as Microsoft

®

Excel) to be modified

.

MI70 Link Program for Real-Time PC

Monitoring

You can monitor HM70 readings directly with a PC by using MI70

Link program. MI70 Link program can be ordered from Vaisala, see

list of accessories on page 73.

28 ___________________________________________________________________ M210297EN-D

Chapter 8 ____________________________________________________________ Other Functions

CHAPTER 8

OTHER FUNCTIONS

Setting Alarm Levels

HM70 is alarming by beeping and blinking the backlight. The alarm turns on when the measured value is not between the alarm limits

(permissible area). Alarm level(s) can be set for only one quantity at a time. Set the alarm levels as follows:

1.

Open the

MENU:

press

OPEN.

2.

Select

Functions

, press .

3.

Select

Alarm,

press

.

4.

Select

Quantity

and press

SET

to choose a quantity.

5.

Select quantity, press

SELECT

.(Only one quantity can be chosen at a time. Only active quantities can be selected. To change the active quantities, go to

MENU- Display- Quantities and units

).

6.

Select the first limit, press

SET

(if the alarm function is ON, take it OFF).

Set the alarm level by using arrow buttons

.

Press

+/-

button to choose the sign of the alarm level. Press

OK

to save the setting.

7.

Select the second limit, then follow instructions in item 6. The alarm will go off when the upper limit is exceeded or when lower limit is gone below.

If you have only one limit, e.g. if you want to detect if the humidity is rising above 50 % RH, set the upper limit to 50 %

VAISALA________________________________________________________________________ 29

User's Guide _______________________________________________________________________

NOTE

RH and the lower limit so low that it never will be reached (for example 0 % RH). Thus, the HM70 will alert when RH rises above 50 % RH.

8.

Select

Alarm ON/OFF,

press

ON

to activate the alarm and return back to the basic display.

9.

A note picture sign appears on the upper left corner.

10. When the alarm level is reached, you can stop alarming by pressing

OK.

To reactivate the alarm function, answer

YES

.

To stop the alarm function completely, answer

NO

.

The alarm is not in function when the device is turned off. Remember

to turn off the automatic power off, see page 21.

Chemical Purge (Optional)

Chemical purge is an optional feature of the HM70 series humidity probes (B-version probes). In some specific applications the sensor gain may decrease gradually due to an interference caused by some particular chemical present in the ambient (see figure). The sensor polymer absorbs the interfering chemical; this reduces the polymer's ability to absorb water molecules and so decreases the sensor sensitivity. In chemical purge the interfering chemical is evaporated by heating the humidity sensor to a temperature of +160 °C for 2 minutes.

For the most applications it will be sufficient to perform chemical purge once a week. For applications where HM70 is subject to high concentrations of chemicals, chemical purge should be performed more frequently, in extreme cases before each measurement.

Turning Chemical Purge ON

The following applies only with humidity probes HMP75B, HMP76B and HMP77B:

30 ___________________________________________________________________ M210297EN-D

Chapter 8 ____________________________________________________________ Other Functions

1.

Open the

MENU:

press

OPEN.

2.

Select

Functions

, press .

3.

Select

Chemical Purge,

press

START

.

4.

Confirm the starting by pressing

YES.

Chemical purge takes up to

6 minutes

.

During that time there are no readings on a display. A message display appears once in 15 seconds and it tells you the time required to complete the chemical purge. The chemical purge symbol is shown on upper left corner.

5.

When the chemical purge is done the basic display with readings returns.

6.

Stabilization of temperature reading can take a few minutes.

You can make a shortcut to the chemical purge function by setting one

shortcut key to refer Chemical Purge function, see page 21.

VAISALA________________________________________________________________________ 31

User's Guide _______________________________________________________________________

Sensor Preheat (Optional)

Sensor preheat is an optional feature of the HM70 series humidity probes (B-version probes).

In some measurement applications, unwanted dew formation makes humidity measurement difficult or even impossible. High humidity combined with rapidly changing outdoor temperature can condense the water vapour in the air onto the sensor head. Until this dew evaporates or dries, it is impossible to obtain a true reading. In sensor preheat the sensor is heated to a temperature level of approximately

+100 °C for up to 4 minutes. This is to prevent possible condensate from the sensor.

When setting the probe from outdoor conditions into warm and humid conditions there can be large temperature difference between the probe head and external environment. In such a conditions turn on the sensor preheat immediately before installing the probe to prevent condensation forming on the probe.

Figure below shows how response time can be dramatically shortened and water condensation on the sensor avoided when using sensor preheat.

120

100

80

60

40

20

0

0

Response time to high RH/T enviroment

10 20 30 40

tim e (s)

50

No Preheat

60

Preheat for 12s

70 80

This curve shows how relative humidity increases as a consequence of condensation on the sensor. The correct response is achieved not until the sensor is dried.

When using preheat, response time is shortened.

32 ___________________________________________________________________ M210297EN-D

Chapter 8 ____________________________________________________________ Other Functions

Turning Sensor Preheat ON/OFF

The following applies only with humidity probes HMP75B, HMP76B and HMP77B:

1.

Open the

MENU:

press

OPEN.

2.

Select

Functions

, press .

3.

Select

Sensor Preheat,

press

START

. Confirm the starting by pressing

YES.

4.

Insert the probe to the process.

5.

When sensor preheat is done, a display message tells that operation is completed and the basic display with readings returns.

Sensor preheat is taking about 4 minutes at maximum

.

During that time there are no readings on a display. A message display appears once in 15 seconds and it tells you the time required to complete the sensor preheat. Sensor preheat symbol is shown on upper left corner. Stabilization of the temperature can take a few minutes.

You can make a shortcut to the sensor preheat function by setting one shortcut key to refer sensor preheat function, see

page 21.

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34 ___________________________________________________________________ M210297EN-D

Chapter 9 _______________________________________ Calibration and Adjustment of Transmitters

CHAPTER 9

CALIBRATION AND ADJUSTMENT OF

TRANSMITTERS

HM70 in Checking and Adjusting

The following transmitters can be calibrated by using HM70: HMDW

60/70, HMW 61/71, HMD/W 20/30, HMP130, HMP230/240 series,

HMT320/330 series, HMM210 series and DMW19 transmitter.

− in the field; check and adjust a fixed transmitter's reading against

HM70's calibrated reference probe

− one or two point calibrations can be done to industrial transmitters and modules (HMP230/240 series, HMT320/330 series, HMM210 modules) by using a MI70 indicator and Vaisala's humidity calibrator HMK15.

Calibration Cables

For calibration and adjustment connect HM70 to fixed transmitter by using one of the following connection cables:

- HMA6070-cable for HMD/W 60/70 and HMW 61/71 transmitters

- HMA2030-cable for HMD/W 20/30 and HMP130 transmitters

- 27159ZZ-cable for HMP230/240 series transmitters and HMM210 series modules.

- 211339-cable for HMT320/330 series transmitters

- 211917ZZ-cable for DMW19 transmitter.

Connector ports for connection cables

VAISALA________________________________________________________________________ 35

User's Guide _______________________________________________________________________

Calibration and Adjustment of HMD/W 60/70,

HMD/W 20/30 and HMP130 Series Transmitters

For checking and adjusting HM60/70 series and HM20/30/130 series transmitters you need a MI70 and a HMP70 calibrated reference probe and a connection cable. Only relative humidity channel of these transmitters can be checked.

1.

Connect the end of the HMA6070 (connection cable for

HM60/70-series) or HMA2030 (connection cable for HM20/30series) cable to either of the HM70's connector port located on

the bottom of the indicator, see figure on page 35.

2.

Connect the other end of the HMA6070 or HM20/30/130-cable to the

RH TEST

connector (or

TEST

connector) of the transmitter's motherboard.

3.

Turn on MI70 indicator.

4.

This concerns ONLY calibration of HM60/70-series: If a transmitter has voltage output, select the RH input scale setting

0... 20 mA. If a transmitter has current output, set the indicator's default setting to correspond the transmitter's signal (0... 20 mA/4...20 mA) as follows:

Open the

MENU:

press

OPEN.

Select

Settings

, press

Select

Measurement settings,

press

Select

RH scale: 4...20 mA

or

0...20 mA

, press

ON

To return to the basic display, press

EXIT

5.

Now the reading of the transmitter is shown on the first or middle row of the display, depending on the connector port to which the calibration cable is connected. Value of the port I is shown on the upper row of the display and the value of the port II on the lower row of the display. Difference of the readings is shown in the lowest row.

6.

Ensure that the probes are located in the same conditions. You can have an optional probe holder for the HMP76 probe to

36 ___________________________________________________________________ M210297EN-D

Chapter 9 _______________________________________ Calibration and Adjustment of Transmitters

7.

attach the probe next to the probe of HMD60/70 or HMD20/30

(order code for the probe holder: HM36915).

Wait until the readings have stabilized (can take up to 20 minutes). If the difference between the humidity readings is less than 2 % RH, there is no immediate need for adjustment.

8.

Adjust the transmitters reading to correspond the HM70 reference probe by turning the small screw on the modules on the transmitter's mother board marked with

RH offset

/

RH gain

. If the RH reading is < 65 %, turn the

RH offset

screw and if the RH reading is >65 %, turn the

RH gain

screw. Turning to the clockwise direction increases the reading, turning to opposite direction decreases the reading.

Do not breathe towards the transmitter probes when adjusting the reading.

9.

10.

When the transmitter reading is equal with the HM70 reference probe's reading, adjustment is done.

Switch off HM70 and detach the cable from the transmitter and the HM70 indicator.

Calibration and Adjustment of HMT100 Series

Transmitters

You can check and adjust the HMT100 relative humidity measurement with Vaisala 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 LiCl-

NaCl adjustment.

Follow the 7 first steps and continue according to the chosen adjustment method:

1.

Connect the 211339 HM70-connection cable to the

SERVICE PORT

connector on the HMT100 motherboard (see Figure 10 on page

19).

2.

Connect the other end of the connection cable to either of the

HM70's connector ports located on the bottom of the indicator.

VAISALA________________________________________________________________________ 37

User's Guide _______________________________________________________________________

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

.

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 37 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 RH

I/II

from the MI70 adjustment menu, press

SELECT

(MI70 automatically recognizes which port the HMP70series 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.

38 ___________________________________________________________________ M210297EN-D

Chapter 9 _______________________________________ Calibration and Adjustment of Transmitters

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 37 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

.

11. 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.

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.

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 37 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.

VAISALA________________________________________________________________________ 39

User's Guide _______________________________________________________________________

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.

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 37 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

SELEC

T. Press OK to accept the note telling about references.

40 ___________________________________________________________________ M210297EN-D

Chapter 9 _______________________________________ Calibration and Adjustment of Transmitters

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.

Calibration and Adjustment of HMP230/240

Transmitters and HMM210 Modules

You are able to check and adjust only humidity channel, temperature channel can only be checked. Calibrate your transmitter/module against a calibrated reference probe of HM70 or against a calibrator's reference humidity by using MI70 indicator in communication.

Follow the first 12 steps and continue according to the chosen calibration method.

1.

In case you have a transmitter provided with heated probe, carry out these preparations before calibration.

HMP240 transmitter with a probe heating: The heating function is turned off automatically when the connection has been established in step 10.

HMM210 module with chemical purge function (re-gain) or

with probe heating option: Before calibration activate the regain function by resetting the device. Let stabilize to the ambient conditions. Turn off the heating; use a calibration jumper

(HMM211) specified in the HMM211's User's Guide (section:

Temperature calibration of dewpoint module) or serial commands (HMM213). For further information, see User's

Guide of the modules.

VAISALA________________________________________________________________________ 41

User's Guide _______________________________________________________________________

2.

Connect the

27159ZZ

-calibration cable to the

-

X5

connector of the HMP230/HMP240-series transmitter

(

X5

connector = 6-pin connector on the left side of the motherboard).

- calibration connector of the HMM210 module.

3.

Connect the other end of the calibration cable to either of the

HM70's connector port located on the bottom of the indicator,

see figure on page 35.

4.

Turn on the HM70.

5.

Open the

MENU:

press

OPEN

.

6.

Select

Functions

, press .

7.

Select

Calibrate transmitters,

press

.

8.

Select

1.Baud rate

and

2.Serial format.

Press

SET

to change the serial settings. Serial settings of the transmitter/module and

HM70 shall be the same. HMP230/240 default serial settings:

4800, 7, even 1. HMM210 module's default settings: 1200, 8,

None. Note! HMM213 shall be in RUN or STOP mode.

9.

Select

3.Start calibration

, press

START.

If the serial settings of

HM70 are not compatible with the settings of HMP230, or the cable connection is not working check that the serial settings of

HMP230 and the settings of HM70 are the same. Check the cable connection. Then retry connection in step 6.

10. After connection has been established start the adjustment by pressing

OK

.

11. Select the quantity to check RH/T (view only), press

SELECT.

12. If RH selected, check the environment settings of HM70 probe, if needed. Press

YES

or

NO

.

The first row shows the reading of the probe/transmitter connected to the port I, the second row shows the reading of the probe/transmitter connected to the port II. The third row RH/T is the difference between the readings of the ports. By pressing

BACK

you return to the selection display.

Example of the RH display

42 ___________________________________________________________________ M210297EN-D

Chapter 9 _______________________________________ Calibration and Adjustment of Transmitters

Field Checking and Adjustment of

Humidity by Using a Calibrated

Reference Probe

Follow the steps from 1 to 12 and continue as follows:

13. Ensure that the probes are located in the same conditions.

14. Wait until the readings have stabilized. If the difference between the humidity readings is less than 2 % RH, there is no immediate need for adjustment.

15. Adjust the transmitter reading to correspond a reading of the reference probe by pressing

ADJUST

.

16. Select

To same as RH

I/II

. Press

SELECT.

17. Confirm by pressing

YES

18. Press

BACK, EXIT, EXIT

to return to the basic display.

1-Point Humidity Adjustment by

Using a Calibrator

You can use Vaisala humidity calibrator HMK15 to achieve the reference humidities. MI70 indicator is working as a communicator in the calibration procedure.

Follow the steps from 1 to 12 and continue as follows:

13. Insert the transmitter probe to the reference humidity

14. Press

ADJUST

15. Select

1-point adjustment

. press

SELECT

16. Wait until the reading is stabilized (takes about 30 minutes).

You can follow the stabilization from the

GRAPH

display.

17. Press

READY

when the value is stabilized in the reference humidity.

18. Enter the correct humidity value by using the arrow buttons.

Press

OK

.

19. Confirm by pressing

YES

20. Press

BACK, EXIT, EXIT

to return to the basic display.

VAISALA________________________________________________________________________ 43

User's Guide _______________________________________________________________________

2-Point Adjustment by Using a

Calibrator

You can use Vaisala humidity calibrator HMK15 in calibration and adjustment. Note that the difference between the two reference humidities shall be at least 50 %. MI70 indicator is working as a communicator in the calibration procedure.

Follow the steps from 1 to 12 and continue as follows:

13. Insert the transmitter probe to the first reference humidity.

14. Press

ADJUST

15. Select

2-point adjustment

. press

SELECT

16. Wait until the reading is stabilized (takes about 30 minutes).

You can follow the stabilization from the

GRAPH

display.

17. Press

READY

when the value is stabilized in the first reference humidity.

18. Enter the first reference humidity value by using the arrow buttons. Press

OK

.

19. Insert the transmitter probe to the second reference humidity.

20. Wait until the reading is stabilized (takes about 30 minutes or more). You can follow the stabilization from the

GRAPH

display.

21. Press

READY

when the value is stabilized in the second reference humidity.

22. Enter the second reference humidity value by using the arrow buttons. Press

OK

.

23. Confirm by pressing

YES

24. Press

BACK, EXIT, EXIT

to return to the basic display.

44 ___________________________________________________________________ M210297EN-D

Chapter 9 _______________________________________ Calibration and Adjustment of Transmitters

Calibration and Adjustment of HMT320 Series

Transmitters

You can check and adjust both humidity and temperature channels.

Make the temperature adjustment first in case you adjust both channels. Calibrate your transmitter against a calibrated reference probe of HM70 or against a calibrator's reference humidity by using

MI70 indicator in communication. Follow the first 8 steps and continue according to the chosen calibration method.

1.

Connect the

211339

-calibration cable to the

RS232

connector in the mother board of the HMP300-series transmitter

2.

Connect the other end of the calibration cable to either of the

HM70's connector port located on the bottom of the indicator,

see figure on page 35.

3.

Turn on both devices (the HMT300-series transmitter can be on all the time).

4.

The reading of the transmitter is shown on the first or middle row of the display, depending on the connector port to which the calibration cable is connected. Value of the port I is shown on the upper row of the display and the value of the port II on the lower row of the display. Difference of the readings is shown in the lowest row.

5.

Take off the

CAL.DIS

jumper from the motherboard of the

HMT300 transmitter. Now MI70 is moved into Adjustment

mode.

6.

Press

OK

to start adjustment.

7.

Select

RH

or

T,

press

SELECT.

8.

Check the environment settings, if needed. Otherwise press

NO.

VAISALA________________________________________________________________________ 45

User's Guide _______________________________________________________________________

Field Checking and Adjustment by

Using a Calibrated Reference Probe

Follow the steps from 1 to 8 and continue as follows:

9. 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.

10. Press

ADJUST

to continue adjusting

.

11. Press

To same asRH

Ii/I

., press

SELECT.

(MI70 recognizes always the port to which the HMP70-series probe is connected).

12. Confirm by pressing

YES.

13. Adjustment is done. Press

BACK

and

EXIT

to return to the basic display.

14. Replace the

CAL.DIS

jumper.

15. Switch off the MI70 and detach the calibration cable from MI70 and from the transmitter.

1-Point Adjustment by Using a

Calibrator

When adjusting a transmitter only in one reference condition, please take care that the reference condition represents well the measuring environment.

If you use humidity calibrator HMK15, please use the adapter fitting

(13.5 mm) on the measurement hole if you calibrate probes of

HMT324, HMT325, HMT327 and HMT328.

Follow the steps from 1 to 8 and continue as follows:

9.

Remove the filter from the transmitter's probe and insert the probe head into the reference condition.

10. Press

ADJUST

to continue adjusting

.

11. Select

1-point adjustment

, press

SELECT.

12. Press

READY

when the reading is stabilized in the reference condition (takes about 30 minutes or more)

.

You can follow the stabilization from the

GRAPH

display.

46 ___________________________________________________________________ M210297EN-D

Chapter 9 _______________________________________ Calibration and Adjustment of Transmitters

13. Enter correct reference value by using the arrow buttons. Press

OK

.

14. Confirm by pressing

YES.

15. Adjustment is done. Press

BACK

and

EXIT

to return to the basic display.

16. Replace the jumper to

CAL.RH

pins.

17. Switch off HM70 and detach the calibration cable from MI70 and from the transmitter.

2-Point Adjustment by Using a

Calibrator

Note that the difference between the two reference humidities shall be at least 50 %. MI70 indicator is used now as a communicator. HMP70 probe can be connected or it can be removed while making this adjustment.

If you use humidity calibrator HMK15, please use the adapter fitting

(13.5 mm) on the measurement hole if you calibrate probes of

HMT324, HMT325, HMT327 and HMT328.

Follow the steps from 1 to 8 and continue as follows:

9.

Remove the filter from the transmitter's probe and insert the probe head into lower reference humidity.

10. Press

ADJUST

to continue adjusting

.

11. Select

2-point adjustment

, press

SELECT.

12. Press

READY

when the reading is stabilized in the first reference condition (takes about 30 minutes or more)

.

13. Enter correct reference value by using the arrow buttons. Press

OK

.

14. Remove the probe and insert the probe head into higher reference humidity. You can follow the stabilization from the

GRAPH

display (takes about 30 minutes or more).

15. Press

READY

when the reading is stabilized in the second reference condition

.

16. Give the higher reference humidity value by using the arrow buttons. Press

OK

.

17. Confirm the adjustment, press

YES

(by pressing

NO

you return to adjustment mode display and no changes are made). If

VAISALA________________________________________________________________________ 47

User's Guide _______________________________________________________________________ the difference between two references is less than 50 %, adjustment can not be done.

18. Adjustment is done. Press

BACK

to exit the adjustment mode press

EXIT

to return to the basic display.

19. Replace the jumper to

CAL.RH

pins.

20. Switch off MI70 and detach the calibration cable from the MI70 and from the transmitter.

Calibration and Adjustment of HMT330 Series

Transmitters

You can check and adjust both humidity and temperature channels of the HMT330. If you adjust both channels, make the temperature adjustment first.

Calibrate your transmitter against a calibrated reference probe of

HM70 or against a calibrator's reference humidity by using MI70 indicator in communication. Follow the first 8 steps and continue according to the chosen calibration method.

1.

Connect the

211339

-calibration cable to the

SERVICE PORT

connector on the mother board of the HMP330.

2.

Connect the other end of the calibration cable to either of the

HM70's connector port located on the bottom of the indicator,

see figure on page 35.

3.

Turn on both devices.

4.

The reading of the transmitter is shown on the first or middle row of the display, depending on the connector port to which the calibration cable is connected. Value of the port I is shown on the upper row of the display and the value of the port II on the lower row of the display. Difference of the readings is shown on the lowest row.

5.

If you have HMT330 with the optional chemical purge option, you should activate the chemical purge before calibration and adjustment. You can do this via the MI70 indicator: open the

MENU;

press

OPEN

select

Functions

, press

START

and

YES

.

Wait until the purge is complete before continuing with calibration and adjustment.

6.

Press the

ADJ

button (on the mother board of the HMT330) to open the adjustment mode. The indicator led (on the motherboard of the HMT330) starts flashing.

48 ___________________________________________________________________ M210297EN-D

Chapter 9 _______________________________________ Calibration and Adjustment of Transmitters

From now on the adjustment is carried out by using the MI70 indicator.

7.

Press

OK

to start adjustment.

8.

Select

RH

or

T,

press

SELECT.

9.

If RH selected, check the environment settings, if needed.

Otherwise press

NO.

Field Checking and Adjustment by

Using a Calibrated Reference Probe

Follow the steps from 1 to 8 on page 48 and continue as follows:

9.

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.

10. Press

ADJUST

to continue adjusting

.

11. Press

To same asRH

Ii/I

, press

SELECT.

(MI70 recognizes always the port to which the HMP70-series probe is connected).

12. Confirm by pressing

YES.

13. Adjustment is done. Press

BACK

and

EXIT

to return to the basic display.

14. Switch off the MI70 and detach the calibration cable.

1-Point Adjustment by Using a

Calibrator

When adjusting a transmitter only in one reference condition, please take care that the reference condition represents the measuring environment. MI70 indicator is used now in communication.

If you use humidity calibrator HMK15, please use the adapter fitting

(13.5 mm) on the measurement hole if you calibrate probes of

HMT334, HMT335, HMT337 and HMT338.

Follow the steps from 1 to 8 on page 48 and continue as follows:

VAISALA________________________________________________________________________ 49

User's Guide _______________________________________________________________________

9.

Remove the filter from the transmitter's probe and insert the probe head into the reference condition.

10. Press

ADJUST

to continue adjusting

.

11. Select

1-point adjustment

, press

SELECT.

12. Press

READY

when the reading is stabilized in the reference condition (takes about 30 minutes or more)

.

You can follow the stabilization from the

GRAPH

display.

13. Enter correct reference value by using the arrow buttons. Press

OK

.

14. Confirm by pressing

YES.

15. Adjustment is done. Press

BACK

and

EXIT

to return to the basic display.

16. Switch off the MI70 and detach the calibration cable.

2-Point Adjustment by Using a

Calibrator

Note that the difference between the two reference humidities shall be at least 50 %. MI70 indicator is used now in communication.

If you use humidity calibrator HMK15, please use the adapter fitting

(13.5 mm) on the measurement hole if you calibrate probes of

HMT334, HMT335, HMT337 and HMT338.

Follow the steps from 1 to 8 on page 48 and continue as follows:

9.

Remove the filter from the transmitter's probe and insert the probe head into lower reference humidity.

10. Press

ADJUST

to continue adjusting

.

11. Select

2-point adjustment

, press

SELECT.

12. Press

READY

when the reading is stabilized in the first reference condition (takes about 30 minutes or more)

.

13. Enter correct reference value by using the arrow buttons. Press

OK

.

14. Remove the probe and insert the probe head into higher reference humidity. You can follow the stabilization from the

GRAPH

display (takes about 30 minutes or more).

15. Press

READY

when the reading is stabilized in the second reference condition

.

50 ___________________________________________________________________ M210297EN-D

Chapter 9 _______________________________________ Calibration and Adjustment of Transmitters

16. Give the higher reference humidity value by using the arrow buttons. Press

OK

.

17. Confirm the adjustment, press

YES

(by pressing

NO

you return to adjustment mode display and no changes are made). If the difference between two references is less than 50 %, adjustment can not be done.

18. Adjustment is done. Press

BACK

to exit the adjustment mode press

EXIT

to return to the basic display.

LiCl-NaCl Adjustment

This adjustment is done by using relative humidity references: 11.3 %

RH (LiCl) and 75.5 % RH (NaCl)

If you use humidity calibrator HMK15, please use the adapter fitting

(13.5 mm) on the measurement hole if you calibrate probes of

HMT334, HMT335, HMT337 and HMT338.

Follow the steps from 1 to 8 on page 48 and continue as follows:

9.

Remove the filter from the transmitter's probe and insert the probe head into 11.3 % RH reference humidity.

10. Press

ADJUST

to continue adjusting

.

11. Select

LiCl-NaCl autom.

, press

SELECT.

Press

OK

to accept the note telling about references.

12. Press

READY

when the reading is stabilized in the first reference condition (takes about 30 minutes or more)

.

13. Remove the probe and insert the probe head into 75.5 % reference humidity. You can follow the stabilization from the

GRAPH

display (takes about 30 minutes or more).

14. Press

READY

when the reading is stabilized in the second reference condition

.

15. Confirm the adjustment, press

YES

(by pressing

NO

you return to adjustment mode display and no changes are made).

16. Adjustment is done. Press

BACK

to exit the adjustment mode press

EXIT

to return to the basic display.

VAISALA________________________________________________________________________ 51

User's Guide _______________________________________________________________________

Field Checking of DMW19 Transmitter

You are able to use MI70 as a display and check your DMW19 transmitter against a calibrated reference probe of HM70.

1. Turn on the DMW19.

2. Remove the lid of the DMW19 transmitter.

3. Connect the 211917ZZ- cable to the 6-pins test connector (cable connector position: Vaisala-logo on top) of the DMW19.

4. Connect the other end of the calibration cable to either of the

HM70's connector port located on the bottom of the indicator, see

figure on page 35.

5. Turn on the HM70.

6. The reading of the DMW19 transmitter is shown on the first or middle row of the HM70 display, depending on the connector port to which the calibration cable is connected. Value of the port I is shown on the upper row of the display and the value of the port II on the lower row of the display. Difference of the readings is shown in the lowest row.

7. Turn off the HM70.

8. Remove the connection cable and replace the lid of the DMW19.

52 ___________________________________________________________________ M210297EN-D

Chapter 10 ____________________________________ Measuring Other Parameters Simultaneously

CHAPTER 10

MEASURING OTHER PARAMETERS

SIMULTANEOUSLY

The MI70 indicator is a generic indicator that can be used with

Vaisala interchangeable dewpoint (DMP) and carbon dioxide (GMP) probes. Two different probes can be used simultaneously.

1. Turn off the device.

2. Connect the DMP70/GMP70 probe to the other connector port in the bottom of the indicator.

3. Turn on the device.

4. Check that the pressure settings of the probes (port I and II) are the same, if you are taking measurements from the same condition.

5. The display shows now the reading of the port I probe in the upper row(s) and the reading of the port II in the lower row(s).

Example of the display when carbon dioxide and humidity probe connected simultaneously to the MI70 indicator.

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User's Guide _______________________________________________________________________

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54 ___________________________________________________________________ M210297EN-D

Chapter 11 ___________________________________________________ Analog Output Connection

CHAPTER 11

ANALOG OUTPUT CONNECTION

Selecting and Scaling the Analog

Output

→ →

To get analog measurement data, you need the analog output signal

cable, see list of accessories on page 73. One voltage signal channel

0...1.0V can be scaled for the selected quantity.

1.

Connect the analog output signal cable connector to the indicator base connector. Connect the screw terminal block as follows:

Brown wire:

Yellow-green common wire (-)

(+)

2.

Open the

MENU:

press

OPEN.

3. Select

Functions

, press .

4. Select

Analog output,

press .

5. Select

Quantity

and press

SET

to choose a quantity.

6. Select

Quantity,

press

SELECT.

(One quantity can be chosen at a time. Only active quantities can be selected. To change the quantities, go to

MENU Display Quantities and units

).

VAISALA________________________________________________________________________ 55

User's Guide _______________________________________________________________________

7. Select

0.0 V

to set the value for the 0.0V output signal, press

SET

.

(If the analog output is ON, take it OFF) Set the low value by using arrow buttons

.

Press

+/-

button to choose the sign of the value. Press

OK

to make the setting.

8. Select

1.0V

to set the value for the 1.0V output signal, press

SET

.

Set the high value by using arrow buttons

.

Press

+/-

button to choose the sign of the value. Press

OK

to make the setting.

9. Select

Analog output on/off,

press

ON

to activate the analog output and return back to the basic display.

10. A wave picture sign appears on the upper left corner of the basic display.

11. To deactivate the analog output function, go to

MENU

Functions

Analog output Analog output on/off

and press

OFF

.

56 ___________________________________________________________________ M210297EN-D

Chapter 12 _______________________________ Calibration and Adjustment of HM70 Series Probes

CHAPTER 12

CALIBRATION AND ADJUSTMENT OF

HM70 SERIES PROBES

General Information about Calibrations

The

HM

70 is fully calibrated as shipped from factory. Adjustment shall be done if there is a reason to believe that device is not within the accuracy specifications. However, if

HM

70 is used as a reference instrument in humidity measurements, the humidity recalibration is recommended every year.

It is recommended to send the device to Vaisala Service Centers for

calibration, see contact information on page 66. Alternatively user can

calibrate and adjust HM70 by following the instructions given in this chapter.

When using Vaisala humidity calibrator HMK15, use the adapter fitting (13.5 mm hole) with the probes HMP76 and HMP77. Probe

HMP75 does not need the adapter fitting. If chemical purge option is available, it should always be performed before calibration, see page

30.

Before starting the adjustment mode, take out the screw covering the calibration button.

Calibration button

(under the screw)

VAISALA________________________________________________________________________ 57

User's Guide _______________________________________________________________________

Relative Humidity Adjustment

LiCl-NaCl Automatic Adjustment

LiCl-NaCl automatic adjustment is a two-point adjustment in reference humidities of 11.3 % (LiCl) and 75 % (NaCl). You don't have to feed the reference values, the HM70 displays the accurate value based on the measured temperature and the Greenspan table stored into the memory of the HM70. Make the adjustment as instructed in the following section 2-Point Adjustment (select

LiCl--NaCl autom.

on item 9 and follow the display instructions).

2-Point Adjustment

Low humidity references 0 % (Nitrogen)/ 11.3 % (LiCl) and higher humidity references 75 % (NaCl)/ 97 % (K

2

SO

4

) are recommended for two-point adjustment. Ensure that the difference between the humidity references is more than 50 %.

1.

When adjusting both relative humidity and temperature, please make the temperature adjustment first.

2.

3.

4.

Check that the HM70 is switched on.

If chemical purge option is available perform it before

adjustment, see page 30.

Take out the screw from the probe handle to expose the calibration button. Press the button with a small screwdriver.

When pressing the button, indicator turns to adjusting mode.

5.

6.

Press

OK

to start the adjustment mode.

Select

RH

, press

SELECT

.

58 ___________________________________________________________________ M210297EN-D

Chapter 12 _______________________________ Calibration and Adjustment of HM70 Series Probes

7.

8.

9.

10.

Press

YES

to check the environmental settings, to continue directly adjustment press

NO

.

Now the adjustment mode is on, press

ADJUST

to select the adjustment method.

Select

2-point adjustment,

press

SELECT.

Press

OK

to continue.

Set the probe to a lower reference relative humidity. If using

HMK15 calibrator, use the adapter fitting (13.5 mm hole) with probes HMP76 and HMP77.

You can follow the stabilization from the

GRAPH

display.

Press

READY

when the reading is stabilized.

11.

12.

13.

14.

Give the lower reference humidity value by using the arrow buttons. Press

OK

.

Set the probe to the higher reference humidity. Press

READY

when the reading is stabilized. You can follow the stabilization from the

GRAPH

display.

Give the higher reference relative humidity value by using the arrow buttons. Press

OK

.

Confirm the adjustment, press

YES

(by pressing

NO

you return to adjustment mode display and no changes are made). If the difference between two references is less than 50 %, adjustment can not be done.

15.

Adjustment has been carried out. Press

BACK

to exit the adjustment mode press

EXIT

to return to the basic display.

16.

Replace the screw onto calibration button.

You can attach a sticker on the calibration button screw to seal the calibration.

1-Point Adjustment

Usually it is recommended to make an adjustment in two reference humidities. If adjustment is done by using one reference humidity (1point adjustment), select the reference humidity so that it represents the measuring environment. Make the adjustment in one point as

instructed in the previous section 2-Point Adjustment (select

1-point adjustment

and follow the display instructions).

VAISALA________________________________________________________________________ 59

User's Guide _______________________________________________________________________

Temperature Adjustment

Temperature adjustment in one or two points can be done if there is reason to believe that the adjustment is changed. If adjustment is done only in one point, reference condition shall represent the measuring environment.

1.

2.

3.

4.

Take out the screw covering the calibration button (in the probe handle).

Press the calibration button. For pressing, use tool with thin and sharp point, such as small screwdriver. When pressing the button, indicator turns to adjusting mode.

Select

T

, press

SELECT

.

Now the adjustment mode is on, press

ADJUST

to select the adjustment method:

1-point adjustment

or

2-point adjustment

.

1-Point Adjustment

Follow the steps from 1 to 4 and continue as follows:

5.

6.

7.

Select

1-point adjustment,

press

SELECT.

Set the probe to a reference temperature. You can follow the stabilization from the

GRAPH

display. Press

READY

when the reading is stabilized in the reference.

Give the reference temperature value by using the arrow buttons. Press

OK.

8.

Confirm the adjustment, press

YES

. (By pressing

NO

you return to adjustment mode display and no changes are made).

9.

Calibration is carried out. Press

BACK

to exit the adjustment mode and

EXIT

to return to the basic display.

60 ___________________________________________________________________ M210297EN-D

Chapter 12 _______________________________ Calibration and Adjustment of HM70 Series Probes

2-Point Adjustment

Follow the steps from 1 to 4 and continue as follows:

5.

6.

7.

8.

9.

10.

11.

Select

2-point adjustment

. Press

SELECT

to continue.

Set the probe to a lower reference temperature. You can follow the stabilization from the

GRAPH

display.

Press

READY

when the reading is stabilized. Give the lower reference temperature by using the arrow buttons. Press

OK.

Set the probe to the higher reference temperature. You can follow the stabilization from the

GRAPH

display. Press

READY

when the reading is stabilized.

Give the higher reference temperature by using the arrow buttons. Press

OK.

Confirm the adjustment, press

YES

. (By pressing

NO

you return to adjustment mode display and no changes are made). If the difference between two references is less than 30 ºC, adjustment can not be done.

Calibration is carried out. Press

BACK

to exit the adjustment mode and

EXIT

to return to the basic display.

Last Adjustment Date

To see the last adjustment date, select

Last adjustment date.

You can check this date also from the

Device information

, see page 23.

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User's Guide _______________________________________________________________________

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62 ___________________________________________________________________ M210297EN-D

Chapter 13 ___________________________________________________________ Error Messages

CHAPTER 13

ERROR MESSAGES

If HM70 displays an error message, check first that the sensor is connected properly and let the probe dry if there is condensed water in the probe.

In case of constant error, please contact Vaisala Service Centers (see page 66).

Error Messages

− Voltage required for Purge unavailable

− Voltage required for Preheat unavailable

− Eeprom read/write error

− ADC malfunction

− Operating voltage out of range

− Analog voltage out of range

− Temperature/Humidity sensor open/short circuit

− Temperature sensor current leak

− Temperature/humidity measurement malfunction

− Temperature value out of range

− Relative humidity value out of range

− Sensor not found

− Amplifier chain malfunction

VAISALA________________________________________________________________________ 63

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64 ___________________________________________________________________ M210297EN-D

Chapter 14 ______________________________________________________________ Maintenance

CHAPTER 14

MAINTENANCE

Changing the Filter

1.

Screw out the dirty filter from the probe head (Figure 1 on page 7). Don't try to clean the filter. Avoid touching the sensor.

2.

Screw on the new filter.

Changing the Battery Pack

A new rechargeable battery pack can be ordered from Vaisala. Change the battery pack as follows:

1. Open the back plate of the indicator by opening the screw of the back plate.

2. Remove the old battery pack. Detach the black connector by pulling up carefully from the wires.

3. Connect the black connector of the new battery pack, ensure that the position of the connector is as indicated in figure (red and black wires are on the upper edge of the connector). Do not push the connector with conducting material, e.g. metallic screwdriver.

4. Place the battery pack, close the back plate and tighten the screw.

5. Charge the battery pack before use, see page 9.

In case you are installing battery pack and you have a device with alkaline batteries, remove the metal contact before installing the battery pack.

Black connector

Metal contact

Connector position:

White wires below.

WHT

A (2

Installing the battery

VAISALA________________________________________________________________________ 65

User's Guide _______________________________________________________________________

Vaisala Service Centers

66 ___________________________________________________________________ M210297EN-D

Chapter 15 _____________________________________________________Technical Specifications

CHAPTER 15

TECHNICAL SPECIFICATIONS

Probes HMP75, HMP76 and HMP77

Measured Variables

Relative Humidity

Measurement range 0 ... 100%RH

Accuracy (including non-linearity, hysteresis and repeatability) at +20 ºC at -20...+40 ºC

1 % RH (0 ... 90 % RH)

1.7 % RH (90 ... 100 % RH)

(1.0 + 0.008 x reading) % RH at -40 ... -20 ºC, +40 ... +180 ºC

Factory calibration uncertainty

(**)

(1.5 + 0.015 x reading) % RH

(+20 ºC)

± 0.6 % RH (0...40 % RH)

± 1.0 % RH (40...97 % RH)

Humidity sensors:

HUMICAP

®

180

HUMICAP

®

180C (chemical purge, sensor preheat)

(**)

Defined as ±2 standard deviation limits. Small variations possible, see also calibration certificate.

Response time (90 %) at 20 ºC in still air

8 s with grid filter

20 s with grid + steel netting filter

40 s with sintered filter

VAISALA________________________________________________________________________ 67

User's Guide _______________________________________________________________________

Temperature

Measurement ranges

HMP75

HMP76

-20 ... +60 ºC

-50 ... +120 ºC

(to+180 ºC temporarily)

HMP77

Accuracy at +20°C

-70 ... +180 ºC

±0.2 °C

Accuracy over temperature range (see graph):

∆ °C

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

-0.1

-0.2

-0.3

-0.4

-0.5

-0.6

-0.7

-80

-60 -40 -20

Temperature sensor

0

Calculated Variables

°C

20 40 60 80 100

120

140

160

180

Pt 100 RTD 1/3 Class B IEC 751

Typical Ranges

Dewpoint temperature

Mixing ratio

Absolute humidity

Wet bulb temperature

Enthalpy

Water vapor pressure

-20 ... +100 ºC, -4 ... +212 ºF

0 ... 600 g/kg dry air

0 ... 600 g/m

3

0 ... +100 ºC, 32 ... +212 ºF

0 ... 160 kJ/g

0 ... 1000 hPa

68 ___________________________________________________________________ M210297EN-D

Chapter 15 _____________________________________________________Technical Specifications

Accuracies of Calculated Variables

Accuracies of the calculated variables depend on the calibration accuracy of the humidity and temperature sensors; here the accuracies are given for

±2 %RH and ±0.2 °C

.

Accuracy of Dewpoint Temperature °C

Relative

Temp.

-40

-20

0

20

40

60

80

100

120

140

160

1.19 0.88 0.72 0.62 0.56 0.51 0.48

1.37 1.00 0.81 0.70 0.63 0.57 0.53 0.50 0.48

2.87

1.96 1.42 1.14 0.97 0.86 0.78 0.72 0.67 0.64

2.18 1.58 1.27 1.08 0.95 0.86 0.79 0.74 0.70

4.42

2.91 2.10 1.69 1.44 1.26 1.14 1.05 0.97 0.91

3.18 2.30 1.85 1.57 1.38 1.24 1.14 1.06 0.99

Accuracy of Mixing Ratio g/kg

(ambient pressure 1013 mbar)

Relative

Temp.

-40 0.003 0.003 — —

-20 0.017 0.018 — —

0 0.08 0.09

1.10 1.17 1.24 1.31 1.38 1.46 1.54 1.62

60 2.68 2.91

80 6.73 7.73 8.92 10.34 12.05 14.14 16.71 19.92 24.01 29.29

438.56 —

120 40.83 74.66 172.36 — — — — — — —

VAISALA________________________________________________________________________ 69

User's Guide _______________________________________________________________________

Accuracy of Wet Bulb Temperature °C

Temp.

-40

-20

0

20

40

60

80

100

120

140

160

General

Temp.

-40

-20

0

20

40

60

80

100

120

140

160

0.21 0.22 0.22 0.22 0.22 0.23 0.23

0.28 0.28 0.29 0.29 0.29 0.30 0.30 0.31 0.31

0.45

1.20 1.03 0.91 0.83 0.76 0.71 0.67 0.63 0.60

1.64 1.32 1.13 0.99 0.89 0.82 0.76 0.72 0.68

3.06

2.73 2.03 1.65 1.41 1.25 1.13 1.04 0.97 0.91

3.06 2.25 1.82 1.55 1.37 1.24 1.13 1.05 0.99

Accuracy of Absolute Humidity g/m³

0.004 0.005 0.005 0.005 0.006 0.006 0.006

0.025 0.027 0.029 0.031 0.032 0.034 0.036 —

0.10

0.11 0.12 0.13 0.13 0.14 0.15 0.15 0.16 0.17

1.13 1.18 1.24 1.29 1.34 1.39 1.44 1.49 1.54

2.84 2.95 3.07 3.18 3.29 3.40 3.52 3.63 3.74

12.6 13.0 13.4 13.8 14.2 14.6 15.0 15.3 15.7

22.6

40.0 41.0 42.0 43.0 44.0 45.0 45.9 46.9 47.9

63.5

Humidity sensor

Temperature sensor

Standard sensor protection

HMP75

HMP76

HMP77

HUMICAP 180

Pt100 IEC751 1/3 class B

Operating temperature range for electronics

-40 ... +60 °C, -40 ... +140 °F

Sintered bronze filter

Grid with SS netting

Housing classification

Housing material

Probe material

IP65 (NEMA 4)

ABS/ PC blend

Stainless steel (AIS316L)

70 ___________________________________________________________________ M210297EN-D

Chapter 15 _____________________________________________________Technical Specifications

Probe cable length

(between indicator and the probe handle) 1.9 m

Probe head cable length of HMP77

(from handle to the root of the probe head) 5.0 m

Probe head diameter 12 mm (0.47 inch)

Weight

HMP75

HMP76

HMP77

250

350

500

MI70 Indicator

Indicator General

Operating temperature range

Operating humidity

Menu languages

Display

Probe inputs

Power supply

Analog output

Output resolution

Accuracy

Temperature dependence

Minimum load resistor

Data interface

Data logging capacity

Logging interval

Logging duration

Alarm

-10 ... + 40 °C

0 ... 100 %RH , non-condensing

English, Finnish, French, German,

Spanish, Swedish

LCD with backlight

Graphic trend display of any quantity

Character height up to 16mm

1 or 2

Rechargeable NIMH battery pack with AC-POWER or 4 x AA size alkalines, type IEC LR6

0 ... 1 VDC

0.6 mV

0.2 % full scale

0.002 %/°C full scale

10 kΩ to ground

RS232C (EIA-232)

900 ... 2700 real time data points,

1 s to 12 h

1 min ... memory full

Audible alarm function

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User's Guide _______________________________________________________________________

Housing classification IP54

Weight 400

Housing material ABS/PC-blend

Battery Pack

Operation times in continuous use data logging use

48 h typical at +20 °C at least 30 days

Power consumption during charge 10W max

Charging time 4 hour

General about Vaisala Hand-Held Humidity and

Temperature Meter HM70

Storage temperature

Storage humidity range

-40 ... +70 °C

0 ... 100 % (noncondensing)

Electromagnetic Compatibility

Complies with the following standard:

EN 61326-1:1997 +Am 1:1998+ Am 2:2001, Electrical equipment for measurement, control and laboratory use - EMC requirements:

Portable.

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Chapter 15 _____________________________________________________Technical Specifications

Accessories

AC-Adapters

Euro AC-adapter

UK AC-adapter

US AC-adapter

AUS AC-adapter

Connection cables

Analog output signal cable

Connection cable for HM60/70/140 series

Connection cable for HM20/30/130 series

Connection cable for HMDM200 series

Connection cable for HM320/330-series

Connection cables for DMW19

Carrying cases

Carrying case for one probe (HMP75 or HMP77)

Carrying case for two probes (HMP75 and HMP76 or

GMP-probe)

Probe accessories

HMP75

Plastic PC grid filter

Membrane filter

Sintered bronze filter

HMP76/77

Plastic PPS grid filter

Sintered stainless steel filter

Sintered bronze filter (HMP76 standard)

PPS grid with SS netting (HMP77 standard)

Probe holder (only for HMP76)

Others

Measurement indicator

MI70 Link- software interface kit (including cable)

MI70EUROADAPTER

MI70UKADAPTER

MI70USADAPTER

MI70AUSADAPTER

27168ZZ

HMA6070

HMA2030

27159ZZ

211339

211917ZZ

MI70CASE

MI70CASE2

6221

10159HM

DRW212987SP

DRW010276SP

HM47280SP

DRW212987SP

DRW010281SP

HM36915

MI70

MI70LINK

VAISALA________________________________________________________________________ 73

User's Guide _______________________________________________________________________

Dimensions in mm (inches)

20

5

(8

.0

7)

11

8

(4

.6

5)

Ø

12 (0.47)

MI70 Indicator HMP75 Probe

74 ___________________________________________________________________ M210297EN-D

Chapter 15 _____________________________________________________Technical Specifications

32

8

(1

2.

91

)

Ø

12 (0.47)

HMP76 Probe HMP77 Probe

37.5 (1.48)

79.5 (3.13)

99.5 (3.92)

HMP77 Sensor head

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User's Guide _______________________________________________________________________

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VAISALA________________________________________________________________________ 77

User's Guide _______________________________________________________________________

www.vaisala.com

78 ___________________________________________________________________ M210297EN-D

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