advertisement
Vaisala HUMICAP
Hand-Held
Moisture and Temperature in
Oil Meter
MM70
U SER ' S G UIDE
M210498en-A
January 2004
PUBLISHED BY
Vaisala Oyj
P.O. Box 26
FIN-00421 Helsinki
Finland
Phone (int.):
Fax:
(+358 9) 894 91
(+358 9) 8949 2227
Visit our Internet pages at http://www.vaisala.com/
© Vaisala 2004
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.
_________________________________________________________________________________
Table of Contents
CHAPTER 1
GENERAL INFORMATION............................................................................ 4
Safety......................................................................................... 4
Warranty.................................................................................... 5
CHAPTER 2
PRODUCT DESCRIPTION ............................................................................ 6
Vaisala's Hand-held MM70 ...................................................... 6
Display parameters .................................................................. 6
Options...................................................................................... 6
CHAPTER 3
PREPARATIONS BEFORE USE................................................................... 8
Installing and recharging of batteries .................................... 8
Turning on the device .............................................................. 8
CHAPTER 4
INSTALLING THE PROBE .......................................................................... 10
Selecting a place for the probe............................................. 10
Mounting the probe for pressurized pipelines/oils............. 10
Mounting the probe for direct measurement (no pressure)14
CHAPTER 5
TAKING MEASUREMENTS ........................................................................ 15
CHAPTER 6
BUTTONS, DISPLAYS AND MENUS.......................................................... 16
Buttons and navigation ......................................................... 16
Basic display........................................................................... 17
Graphical display ................................................................... 17
Menus ...................................................................................... 18
CHAPTER 7
PPM-calculation...................................................................... 19
Display settings...................................................................... 21
Quantities and units ............................................................ 21
Rounding ............................................................................. 21
Hold/Save display................................................................ 22
VAISALA_________________________________________________________________________ 1
User's Guide _______________________________________________________________________
Graphic history.....................................................................22
User interface..........................................................................23
Selecting language ..............................................................23
Automatic power OFF..........................................................24
Changing the shortcut keys .................................................24
Button click and backlight on button press ..........................25
Setting date and time...........................................................25
Device information .................................................................26
Reverting factory settings ....................................................26
CHAPTER 8
Recording ................................................................................27
Stopping recording.................................................................28
Viewing recorded data ...........................................................28
Checking the memory status ................................................29
Deleting all recorded files......................................................29
MI70 Link program to transfer recorded data to PC ...........30
MI70 Link program for real time PC monitoring ..................30
CHAPTER 9
Setting the alarm levels .........................................................31
Selecting and scaling the analog output .............................32
CHAPTER 10
CALIBRATION AND ADJUSTMENT OF TRANSMITTERS .......................34
MM70 in checking and adjusting ..........................................34
Calibration cables...................................................................34
Calibration of HMP228 series transmitters ..........................35
Checking and adjusting the MMT318 transmitters .............38
CHAPTER 11
MEASURING OTHER PARAMETERS SIMULTANEOUSLY......................41
CHAPTER 12
CALIBRATION AND ADJUSTMENT OF MM70 SERIES PROBES ...........42
General about calibrations ....................................................42
Preparations before the calibration ......................................42
Relative humidity adjustment................................................43
Temperature adjustment........................................................45
Last adjustment date..............................................................46
2 _____________________________________________________________________M210498en-A
_________________________________________________________________________________
CHAPTER 13
CHAPTER 14
Changing the filter and sensor ............................................. 48
Clean the sensor before storing the MMP78 probe and
before calibration ................................................................... 48
Changing the battery pack .................................................... 49
Vaisala Service Centres......................................................... 50
CHAPTER 15
TECHNICAL SPECIFICATIONS.................................................................. 51
MMP78 Probe.......................................................................... 52
MI70 Indicator ......................................................................... 52
Options and Accessories ...................................................... 54
Dimensions in mm (inches)................................................... 55
VAISALA_________________________________________________________________________ 3
User's Guide _______________________________________________________________________
CHAPTER 1
GENERAL INFORMATION
Safety
WARNING
Throughout the manual, important safety considerations are highlighted as follows:
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
Note highlights important information on using the product.
Feedback
Vaisala Customer Documentation Team welcomes your comments and suggestions on the quality and usefulness of this publication. If you find errors or have other suggestions for improvement, please indicate the chapter, section, and page number. You can send comments to us by e-mail: [email protected]
4 _____________________________________________________________________M210498en-A
Chapter 1 _________________________________________________________ General Information
Warranty
Vaisala hereby represents and warrants all Products manufactured by Vaisala and sold hereunder to be free from defects in workmanship or material during a period of twelve (12) months from the date of delivery save for products for which a special warranty is given. If any Product proves however to be defective in workmanship or material within the period herein provided Vaisala undertakes to the exclusion of any other remedy to repair or at its own option replace the defective Product or part thereof free of charge and otherwise on the same conditions as for the original Product or part without extension to original warranty time. Defective parts replaced in accordance with this clause shall be placed at the disposal of Vaisala.
Vaisala also warrants the quality of all repair and service works performed by its employees to products sold by it. In case the repair or service works should appear inadequate or faulty and should this cause malfunction or nonfunction of the product to which the service was performed Vaisala shall at its free option either repair or have repaired or replace the product in question. The working hours used by employees of Vaisala for such repair or replacement shall be free of charge to the client.
This service warranty shall be valid for a period of six (6) months from the date the service measures were completed.
This warranty is however subject to following conditions: a) A substantiated written claim as to any alleged defects shall have been received by Vaisala within thirty (30) days after the defect or fault became known or occurred, and b) The allegedly defective Product or part shall, should Vaisala so require, be sent to the works of
Vaisala or to such other place as Vaisala may indicate in writing, freight and insurance prepaid and properly packed and labelled, unless Vaisala agrees to inspect and repair the Product or replace it on site.
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.
VAISALA_________________________________________________________________________ 5
User's Guide _______________________________________________________________________
CHAPTER 2
PRODUCT DESCRIPTION
Vaisala's Hand-held MM70
MM70 consists of two main units: MI70 indicator and MMP78 probe.
MM70 Hand-held humidity meter incorporates Vaisala's advanced
HUMICAP
technology which enables reliable and high performance moisture in oil measurement.
Vaisala MM70 is delivered with a factory calibration certificate.
Display parameters
- a
- H w
2
: :water activity
- T :temperature ( ° C/ ° F)
O :mass concentration of water (ppm) (available only if selected when ordering)
Options
- carrying case for the indicator and the probe
- connection cables for the fixed transmitters: HMP228 and MMT318
- MI70 Link software interface kit
- extension cable (10 m)
6 _____________________________________________________________________M210498en-A
Chapter 2 __________________________________________________________ Product description
2
MI70 INDICATOR
1 MI70 indicator
2 Recharger connector
3 Connector ports for probes and cables
4 Probe MMP78
5 Calibration button under the screw
6 Probe filter
7 Clasp nut
8 Fitting body
9 Manual press tool
10 Protective cap
11 Plastic wrench
1
Port I
Port II
3
MMP78 PROBE
Rugged probe with a long stainless steel shaft.
Power ON/OFF
4
6
5 7 8
9
10 Protecting cap
(+ plastic wire for attaching the cap to the probe)
11 Plastic wrench
VAISALA ________________________________________________________________________ 7
User's Guide _______________________________________________________________________
CHAPTER 3
PREPARATIONS BEFORE USE
Installing and recharging of batteries
1. If you are using alkaline batteries, unscrew the back plate of the indicator and insert the alkalines. If MM70 is ordered with rechargeable battery pack, it is already in place as shipped from the factory.
2. 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 MM70 during the first recharging. Later on MM70 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.
4.
The battery pack is full when the battery symbol stops rolling.
Disconnect the recharger.
Turning on the device
1.
2.
3.
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 23.
8 _____________________________________________________________________M210498en-A
Chapter 3 ____________________________________________________Preparations BEFORE use
4.
5.
6.
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-month-date . If you
want to change the format, see page 25.
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.
Press EXIT. To check and change the pressure setting, select YES .
Otherwise select NO, basic display appears.
VAISALA ________________________________________________________________________ 9
User's Guide _______________________________________________________________________
CHAPTER 4
INSTALLING THE PROBE
Selecting a place for the probe
Select a place which gives a true picture of the process. Oil should circulate freely around the sensor; a rapid oil flow is recommended. Install the probe directly into the circulation system and not into the oil reservoir because of deposition.
It is recommended that the sensor head is installed directly in the process through the ball valve assembly. When the ball valve assembly is used, the pipe does not have to be emptied or shut down for installation or removal of the probe. Install the sensor head transversely against the direction of the process flow. Avoid installing into a bend in the pipe.
NOTE
Take care not to damage the pipe of the probe. If the pipe is damaged, the probe head is less tight and will not go through the clasp nut. Make sure that the filter is tightly fastened to protect the sensors.
Mounting the probe for pressurized pipelines/oils
Due to the sliding fit, the MMP78 is easy to install into and remove from the pressurized process. The probe is especially suitable for the measurements in pipelines. The maximum installation pressure is 10 bar and the maximum operation pressure is 20 bar.
10 ____________________________________________________________________M210498en-A
Chapter 4 __________________________________________________________ Installing the probe
1
2
1. clasp nut, 27 mm hex nut
2. fitting body, 24 mm hex head
.
MMP78 pipe dimensions (in mm); 400 mm (adjustment range 340 mm).
Tightening the clasp nut
1. Adjust the probe to a suitable depth according to the type of installation and tighten the clasp nut first manually.
2. Tighten the clasp nut first manually.
3. Mark the fitting screw and the clasp nut.
4. Tighten the nut a further 30 - 40° (ca.1/12" turn) with a plastic wrench.
If you have a suitable torque spanner, tighten the nut to max 35±5 Nm
(25±4 ft-lbs).
1. probe
2. clasp nut
3. pen
4. fitting screw
NOTE
Take care not to over tighten the clasp nut to avoid difficulties when opening it.
VAISALA _______________________________________________________________________ 11
User's Guide _______________________________________________________________________
When the probe is used in a pressurized processes the sensor head should preferebly be installed through a ball valve assembly.
Sealing thread cutting for the fitting body.
fitting body hex = 24mm tapered thread
R1/2 ISO 7/1 parallel thread
G1/2 ISO 228/1
(BS 2779, JIS B0202)
ø19mm drilling
>10.5mm
>40mm
Process or pipe wall sealing with:
1. LOCTITE® No 542 + activ. No 7649 (t=-55...+150 °C)
2. MEGA-PIPE EXTRA No 7188 (t=-55...+170 °C)
3. PTFE tape (t=-60...+210 °C) NOTE: the tape does not lock the parts together. Therefore, use two fork spanners (hex 24 and
27 mm) for tightening and opening the clasp nut of the probe
CAUTION
In pressurized processed it is essential to tighten the supporting nuts and screws very carefully to prevent loosening of the probe by the action of pressure.
CAUTION
Take care not to damage the probe body. A damaged body makes the probe head less tight and may prevent it from going through the clasp nut.
Ball valve installation
The ball valve installation is preferred when connecting the probe to a pressurized process or pipeline. Use the Vaisala DMP248BVS ball valve set or a 1/2" ball valve assembly with a ball hole of ∅ 14 mm or more. If you install the sensor head ( ∅ 12 mm) in a process pipe, please note that the nominal size of the pipe must be at least 1 inch (2.54 cm). Use the manual press tool to press the sensor head into the pressurized (< 10 bar) process or pipeline.
12 ____________________________________________________________________M210498en-A
Chapter 4 __________________________________________________________ Installing the probe
1. Shut down the process if the process pressure is more than 10 bars. If the pressure is lower there is no need to shut down the process.
2. Make the installation according to the figure below. Install the sensor head transversely against the direction of the process flow.
3. Make sure that the temperature at the measurement point is equal to that of the process, otherwise the moisture reading may be incorrect.
Stage 1 Stage 2
1. probe
2. Tighten clasp nut first manually; probe is then sliding easily.Finally tighten with an plastic wrench about 30-40 ° , to have a stable installation, Note: do
not overtighten this screw!
3. handle of the ball valve
4. ball of the ball valve
5. process chamber / pipeline
6. manual press tool
7. the groove on the probe indicates the upper adjustment limit
6
1
3
2
5
7
4
NOTE
The probe can be installed in the process through the ball valve assembly provided that the process pressure is less than 10 bars. This way, the process does not have to be shut down for installing or removing the probe. However, if the process is shut down before removing the probe, the process pressure can be max. 20 bars.
VAISALA _______________________________________________________________________ 13
User's Guide _______________________________________________________________________
Mounting the probe for direct measurement (no pressure)
1. Lift up the clasp nut, see picture.
2. Install the probe into measuring position.
3. When stopping the measurement, pull down the clasp nut to clean the probe or just wipe the probe with soft cloth.
1 Lift up the clasp nut
2 Pull down to clean the probe
14 ____________________________________________________________________M210498en-A
Chapter 5 _______________________________________________________ Taking measurements
CHAPTER 5
TAKING MEASUREMENTS
1.
2.
3.
See Chapter 3 Preparations before use if you start the MM70 first time, otherwise follow instructions below.
4.
Connect the probe to MI70-indicator.
Press POWER ON/OFF button.
Install the probe to the measuring position. If measuring in
pressurized processes, see the instructions on page 10.
The basic display opens, let the reading stabilize.
CAUTION
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.
VAISALA _______________________________________________________________________ 15
User's Guide _______________________________________________________________________
CHAPTER 6
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.
16 ____________________________________________________________________M210498en-A
Chapter 6 __________________________________________________ Buttons, displays and menus
Basic display
5
1
2
3
4
1. Selected quantities. Up to three of the quantities can be selected at a time.
- a w
: water activity
- T temperature ( ° C/ ° F)
- H
2
O: moistured oil/ dry oil volume (ppm)
2. 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.
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 24).
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 Recording/Viewing.
2.
Graphical display opens. More information on page 22
Graphic history .
3. Press BACK to return to the basic display.
VAISALA _______________________________________________________________________ 17
User's Guide _______________________________________________________________________
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
Settings menu
18 ____________________________________________________________________M210498en-A
Chapter 7 ___________________________________________________________________ Settings
CHAPTER 7
SETTINGS
PPM-calculation
In case you have a device with a ppm-output the ppm-value is available as one of the quantities. The calculation model is based on the average water solubility behaviour of transformer oils, as follows: ppm = aw × 10 (A/(T+273.16)+B)
Where aw= water activity
A,B= coefficients (average/oil specific)
T= temperature (ºC)
If additional accuracy is needed, refer to the paragraph Calculation Model with Oil Specific Coefficients.
Calculation Model with Oil Specific Coefficients
For additional accuracy, oil specific calculation model can be used both for mineral and silicon based oils. An oil sample has to be sent to Vaisala for modelling. As a result, the specific coefficients (A and B, see formula) for the transformer oil are determined by Vaisala. Using these coefficients the accuracy of measurements is increased. The determination of specific coefficients shall be agreed with the Vaisala representative.
The determined coefficients of the transformer oil can be programmed to the MM70 by Vaisala or by a user according to the following instructions.
NOTE
Calculation Model With Oil Specific Coefficients is always needed for silicone based oils.
VAISALA _______________________________________________________________________ 19
User's Guide _______________________________________________________________________
Feeding the coefficients to the MI70 memory
You can save in the memory specific coefficients for 4 different oils. As shipped from factory the average coefficients are set for the number 1 type
(H
2
O oil
: 1). Add your own coefficients as follows:
1. Open the MENU; press OPEN
2. Select SETTINGS and press .
3. Select MEASUREMENT SETTINGS and press .
4. If you want to keep the average coefficients under identification number 1 (set in the factory) press SET and give number 2 for the second oil type.
5. Select the A value ( A:0.0000
) and press SET.
6. Set the value A by using using buttons, press OK .
7. Select the B value ( B:0.0000
) and press SET.
8. Set the value B by using using buttons, press OK .
9. You may give coefficients for 4 different oils. Indentify the oil by numbering them (1...4). Select the first row ( H
2
O oil
) and set the identification number. Then feed the coefficients as shown above.
10. Press EXIT to return to the basic display.
11. Remember always select the correct oil type before measurements.
Oil identification number 1-4
20 ____________________________________________________________________M210498en-A
Chapter 7 ___________________________________________________________________ Settings
Display settings
→
Quantities and units
All the quantities and units are shown in page 6.
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 select one or two decimal display by using the Rounding function.
The default setting is rounding off (= two decimal display).
1. Open the MENU: press OPEN
2. Select the Display , press
3. Select Rounding.
4. Press ON to have rounding on (one decimal display). Press OFF to deactivate rounding (two decimal display).
5. Press EXIT to return to the basic display.
VAISALA _______________________________________________________________________ 21
User's Guide _______________________________________________________________________
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 basic display.
6. You can save several readings with HOLD-SAVE function. The data points are indentified 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.
22 ____________________________________________________________________M210498en-A
Chapter 7 ___________________________________________________________________ Settings
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.
VAISALA _______________________________________________________________________ 23
User's Guide _______________________________________________________________________
Automatic power OFF
As shipped from factory, MM70 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 5 or
30 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 the 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 alarm-function (as an example), select Alarm by using arrow buttons ( Functions) , 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 alarm function -shortcut key
24 ____________________________________________________________________M210498en-A
Chapter 7 ___________________________________________________________________ Settings
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.
VAISALA _______________________________________________________________________ 25
User's Guide _______________________________________________________________________
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.
Indicator information
Probe 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.
26 ____________________________________________________________________M210498en-A
Chapter 8 _____________________________________________________________ Recording data
CHAPTER 8
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 _______________________________________________________________________ 27
User's Guide _______________________________________________________________________
CAUTION
5.
6.
7.
8.
9.
Press SELECT.
To set the recording duration, select Duration , press SET.
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.
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.
You can switch the MM70 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.
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
Viewing recorded data
1. Open the MENU: press OPEN .
2. Select Recording/Viewing , press .
3. Select View recorded data, press .
28 ____________________________________________________________________M210498en-A
Chapter 8 _____________________________________________________________ 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 the 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 _______________________________________________________________________ 29
User's Guide _______________________________________________________________________
MI70 Link program to transfer 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 54. You can examine the recorded data easily in Windows
â 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 MM70 readings directly with a PC by using MI70 Link program. MI70 Link program can be ordered from Vaisala, see list of
30 ____________________________________________________________________M210498en-A
Chapter 9 _____________________________________________________________ Other functions
CHAPTER 9
OTHER FUNCTIONS
Setting the alarm levels
→
MM70 is alarming by beeping and blinking the backlight. The alarm turns on when the measured value is not between the alarm limits (permissable 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 a w
reaches
0.9, set the upper limit to 0.9 and the lower limit so low that it never will be reached (for example 0). Thus, the MM70 will alert when RH rises above 0.9 a w
.
VAISALA _______________________________________________________________________ 31
User's Guide _______________________________________________________________________
NOTE
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 24.
Selecting and scaling the analog output
→ →
To get analog measurement data, you need the analog output signal cable,
see list of accessories on page 54. 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 wire: common wire (-) signal (+)
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.
32 ____________________________________________________________________M210498en-A
Chapter 9 _____________________________________________________________ Other functions
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 ).
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 .
VAISALA _______________________________________________________________________ 33
User's Guide _______________________________________________________________________
CHAPTER 10
CALIBRATION AND ADJUSTMENT OF
TRANSMITTERS
MM70 in checking and adjusting
Vaisala's HMP228 and MMT318 series transmitters can be calibrated and adjusted by using MM70.
− in the field; check and adjust a fixed transmitter's reading against
MM70's calibrated reference probe.
− one or two point calibrations and adjustments can be done by using a
MI70 indicator and Vaisala's humidity calibrator HMK15.
Calibration cables
For calibration and adjustment connect MM70 to fixed transmitter by using one of the following connection cables:
- 27159ZZ connection cable for HMP228 transmitters
- DRW216050 connection cable for MMT318 transmitters
Connector ports for connection cables
34 ____________________________________________________________________M210498en-A
Chapter 10 _______________________________________Calibration and adjustment of transmitters
Calibration and adjustment of HMP228 series transmitters
You are able to check all the parameters a w
, T and RH but only RH can be adjusted. You can calibrate your transmitter against a calibrated reference probe of MM70 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. Connect the 27159ZZ -calibration cable to the X5 connector of the
HMP228-series transmitter ( X5 connector = 6-pin connector on the left side of the motherboard).
2. Connect the other end of the calibration cable to either of the
MM70's connector port located on the bottom of the indicator, see
3. Turn on the MM70.
4. Open the MENU: press OPEN .
5. Select Functions , press .
6. Select Calibrate transmitters, press .
7. Select 1.Baud rate and 2.Serial format.
Press SET to change the serial settings. Serial settings of HMP228 and MM70 shall be the same.
(HMP228 factory serial settings: 4800, 7, even 1).
8. Select 3.Start calibration , press START. If the serial settings of MM70 are not compatible with the settings of HMP228, or the cable connection is not working check that the serial settings of HMP228 and the settings of MM70 are the same. Check the cable connection.
Then retry connection in step 6.
9. After connection has been established start the calibration/adjustment by pressing OK .
10. Select the quantity to check (a w
SELECT.
/ T / RH) or to adjust (RH), press
11. Check the environment settings of MM70 probe, if needed. Press
YES or NO .
12. 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 is the difference between the readings of the ports.
VAISALA _______________________________________________________________________ 35
User's Guide _______________________________________________________________________
Relative humidity adjustment 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 relative 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
36 ____________________________________________________________________M210498en-A
Chapter 10 _______________________________________Calibration and adjustment of transmitters
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.
2-point relative humidity 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
VAISALA _______________________________________________________________________ 37
User's Guide _______________________________________________________________________
24. Press BACK, EXIT, EXIT to return to the basic display.
Checking and adjusting the MMT318 transmitters
You can check and adjust MMT318 transmitter reading against a calibrated reference probe of MMP78 or against another reference condition by using MI70 indicator in communication. Follow the first 4 steps and continue according to the chosen calibration method.
1. Connect the DRW216050-calibration cable between the screw terminal connector of the MMT318 transmitter and the MI70 indicator.
2. Turn on MM70.
- In case you use a MMP78 probe as a reference: 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.
- In case MI70 is used as an display, the reading of the MMT318 transmitter is shown on a display.
3. Remove the MMT318 transmitter unit from the mounting plate and press the adjustment button once. Now MI70 is starting the Adjustment
mode.
4. Press OK to start adjustment.
Field checking and adjustment by using a calibrated reference probe
Follow the steps from 1 to 4 and continue as follows:
5. Select a w
, RH ,T or H
2
O (H
2
O can be checked only) press SELECT.
38 ____________________________________________________________________M210498en-A
Chapter 10 _______________________________________Calibration and adjustment of transmitters
6. 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 towards them.
7. Press ADJUST to continue adjusting .
8. Press To same as..
, press SELECT. (MI70 recognizes always the port to which the MMP70-series probe is connected).
9. Confirm by pressing YES.
10. Adjustment is done. Press BACK and EXIT to return to the basic display.
11. 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 well the measuring environment.
If you use humidity calibrator HMK15, please use the adapter fitting (13.5
mm) on the measurement hole.
Follow the steps from 1 to 4 and continue as follows:
5. Select the quantity press SELECT.
6. Remove the filter from the transmitter's probe and insert the probe head into the reference condition.
7. Press ADJUST to continue adjusting .
8. Select 1-point adjustment , press SELECT.
9. 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.
10. Enter correct reference value by using the arrow buttons. Press OK .
11. Confirm by pressing YES.
12. Adjustment is done. Press BACK and EXIT to return to the basic display.
13. Detach the calibration cable.
VAISALA _______________________________________________________________________ 39
User's Guide _______________________________________________________________________
2-point adjustment by using a calibrator
If you use humidity calibrator HMK15, please use the adapter fitting (13.5
mm) on the measurement hole.
Follow the steps from 1 to 4 and continue as follows:
5. Select the quantity press SELECT.
6. Remove the filter from the transmitter's probe and insert the probe head into the first reference condition.
7. Press ADJUST to continue adjusting .
8. Select 2-point adjustment , press SELECT.
9. Press READY when the reading is stabilized in the first reference condition (takes about 30 minutes or more) .
10. Enter correct reference value by using the arrow buttons. Press
OK .
11. Remove the probe and insert the probe head into the second reference condition. You can follow the stabilization from the
GRAPH display (takes about 30 minutes or more).
12. Press READY when the reading is stabilized in the second reference condition .
13. Give the higher reference humidity value by using the arrow buttons.
Press OK .
14. 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 is done. Press BACK to exit the adjustment mode press
EXIT to return to the basic display.
16. Detach the calibration cable.
40 ____________________________________________________________________M210498en-A
Chapter 11 _____________________________________ measuring other parameters simultaneously
CHAPTER 11
MEASURING OTHER PARAMETERS
SIMULTANEOUSLY
The MI70 indicator is a generic indicator that can be used with Vaisala interchangeable humidity (HMP), dewpoint (DMP) and carbon dioxide
(GMP) probes. Two different probes can be used simultaneously.
1. Turn off the device.
2. Connect the DMP70/GMP70/HMP70 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).
VAISALA _______________________________________________________________________ 41
User's Guide _______________________________________________________________________
CHAPTER 12
CALIBRATION AND ADJUSTMENT OF
MM70 SERIES PROBES
General about calibrations
The MM70 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. The recommended calibration interval is one yar.
It is recommended to send the device to Vaisala Service Centres for
calibration and adjustment, see contact information on page 50.
Alternatively, user can calibrate and adjust MM70 by following the instructions given in this chapter.
Preparations before the calibration
Before the calibration the used sensor should be cleaned with instrument air to blow out existing oil or gently first flush with hepthane (C7H16) and dry with instrument air. This is to decrease response time and to prevent contamination of the salt bath and change of the reference condition. See
NOTE
It is important to clean the sensor before calibration as the dirty sensor can contamine the salt bath and change the reference condition.
42 ____________________________________________________________________M210498en-A
Chapter 12 ________________________________ Calibration and adjustment of MM70 series probes
When using Vaisala humidity calibrator HMK15, use the adapter fitting
(13.5 mm hole). Before starting the adjustment mode, take out the screw covering the calibration button.
Calibration button
(under the screw)
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 MM70 displays the accurate value based on the measured temperature and the Greenspan table stored into the memory of the MM70 . Make the adjustment as instructed in the following section 2-
point relative humidity adjustment (select LiCl--NaCl autom. on item 8 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 %.
VAISALA _______________________________________________________________________ 43
User's Guide _______________________________________________________________________
1.
2.
3.
When adjusting both relative humidity and temperature, please make the temperature adjustment first.
Check that the MM70 is switched on.
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.
4.
5.
6.
7.
8.
9.
Press OK to start the adjustment mode.
Select RH , press SELECT .
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).
You can follow the stabilization from the GRAPH display. Press
READY when the reading is stabilized.
10.
11.
12.
13.
14.
15.
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.
Adjustment has been carried out. Press BACK to exit the adjustment mode press EXIT to return to the basic display.
Replace the screw onto calibration button.
You can attach a sticker on the calibration button screw to seal the calibration.
44 ____________________________________________________________________M210498en-A
Chapter 12 ________________________________ Calibration and adjustment of MM70 series probes
1-point adjustment
Usually it is recommended to make an adjustment in two reference humidities. If adjustment is done by using one reference humidity (1-point adjustment), select the reference humidity so that it represents the measuring environment. Make the adjustment in one point as instructed in the previous section Two-point relative humidity adjustment (select 1-point adjustment and follow the display instructions).
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.
VAISALA _______________________________________________________________________ 45
User's Guide _______________________________________________________________________
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 ° C, 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
46 ____________________________________________________________________M210498en-A
Chapter 13 ___________________________________________________________ Error messages
CHAPTER 13
ERROR MESSAGES
If MM70 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 Center (see page 50).
Error Messages
− 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 _______________________________________________________________________ 47
User's Guide _______________________________________________________________________
CHAPTER 14
MAINTENANCE
Changing the filter and sensor
Plastic socket
1. Screw out the filter from the probe head (figure on page 7).
2. Remove the damaged sensor by pulling it out. Handle the sensor by the plastic socket.
3. Insert a new sensor.
4. Make a humidity calibration.
5. Screw a new filter on the probe head, take care to tighten the filter properly
(5.1 Nm).
Clean the sensor before storing the MMP78 probe and before calibration
For cleaning of the probe you need instrument air and heptane liquid. Dry with instrument air to prevent oxidation of the sensor. The oxidation of the sensor can cause extended response times or drifting.
1. Blow the probe head (with filter) with instrument air to remove the remains of the oil.
2. Immerse the probe head into heptane liquid and rinse out the oil.
3. Dry the probe head with instrument air. In case you are going to calibrate the probe, remove the filter and dry the sensor with instrument air. Check that the sensor looks clean.
48 ____________________________________________________________________M210498en-A
Chapter 14 ______________________________________________________________ Maintenance
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
4. Place the battery pack, close the back plate and tighten the screw.
5. Charge the battery pack before use, see page 8.
In case you are installing battery pack and you have a device with alkaline batteries, remove the metal contact before installing the battery pack.
Metal contact
Black connector Connector position:
White wires below.
WHT
A (2
Installing the battery
VAISALA _______________________________________________________________________ 49
User's Guide _______________________________________________________________________
Vaisala Service Centres
NORTH AMERICAN SERVICE CENTER
Vaisala Inc., 100 Commerce Way, Woburn, MA 01801-1068, USA.
Phone: +1 781 933 4500, Fax +1 781 933 8029
Email: [email protected]
EUROPEAN SERVICE CENTER
Vaisala Instruments Service, Vanha Nurmijärventie 21 FIN-01670 Vantaa,
FINLAND.
Phone: +358 9 8949 2758, Fax +358 9 8949 2295
E-mail: [email protected]
ASIAN SERVICE CENTER
Vaisala KK, 42 Kagurazaka 6-Chome, Shinjuku-Ku, Tokyo 162-0825, JAPAN.
Phone: +81 3 3266 9611, Fax +81 3 3266 9610
E-mail: [email protected]
www
.
vaisala.com
50 ____________________________________________________________________M210498en-A
Chapter 15 _____________________________________________________ Technical Specifications
CHAPTER 15
TECHNICAL SPECIFICATIONS
Measured variables
Water activity a
w
Measurement range 0...1 (@-40...+60 ° C/ -40...+140 ° F)
Accuracy (including nonlinearity and repeatability)
When calibrated against salt solutions (ASTM E104-85):
±0.02 (0...0.9)
±0.03 (0.9...1.0)
When calibrated against high-quality, certified humidity standards:
±0.01 (0...0.9)
±0.02 (0.9...1.0)
Response time (90 %) at +20 °C in still oil (stainless steel filter)
Humidity sensor
10 min
HUMICAP ®
Temperature
Measurement range -40...+100 °C (-40...+212 ° F)
Typical accuracy at +20 °C (+68 °F) ±0.1 °C (±0.18°F)
Typical temperature dependence of electronics
Temperature sensor
± 0.005 °C/°C (±0.003°F/°F)
Pt 100 RTD 1/3 Class B IEC 751
VAISALA _______________________________________________________________________ 51
User's Guide _______________________________________________________________________
MMP78 Probe
Humidity sensor
Temperature sensor
Operating temperature range for electronics
Operation pressure range
Standard sensor protection
Housing classification
Housing material
Probe material
Probe cable length
(between indicator and the probe
handle)
Extension cable
Probe head diameter
Weight (including protective cap and manual press tool).
HUMICAP
â
Pt100 IEC751 1/3 class B
-40...+60 ° C, -40...+140 ° F
0...20 bar
Stainless steel grid
IP65 (NEMA 4)
ABS/ PC blend
Stainless steel (AIS316L)
1.9 m
10 m
12 mm (0.47 inch)
520 g
MI70 Indicator
Operating temperature range
Operating humidity
Menu languages
Display
Probe inputs
Power supply
Analog output
Output resolution
Accuracy
Temperature dependence
Minimum load resistor
Data interface
-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 kohm to ground
RS232C (EIA-232)
52 ____________________________________________________________________M210498en-A
Chapter 15 _____________________________________________________ Technical Specifications
Data logging capacity
Logging interval
Logging duration
Alarm
Housing classification
Weight
Housing material
900...2700 real time data points,
1 s to 12 h
1 min ... memory full
Audible alarm function
IP54
400 g
ABS/PC-blend
Battery pack
Operation times in continuous use data logging use
Power consumption during charge
Charging time
48 h typical at +20 °C (68 ° F) up to 30 days
10W max
4 hour
General about the MM70 Hand held humidity and temperature meter
Storage temperature
Storage humidity range
-40 ...+70 °C
0...100 %Non Condensing
Electromagnetic compatibility
Complies with the following standard:
EN 61326-1:1997 +Am 1:1998, Electrical equipment for measurement, control and laboratory use - EMC requirements: Portable test and measurement equipment.
VAISALA _______________________________________________________________________ 53
User's Guide _______________________________________________________________________
Options and Accessories
Description
AC-Adapters
Euro AC-adapter
UK AC-adapter
US AC-adapter
AUS AC-adapter
Cables
Analog output signal cable
Connection cable for MMT318
Connection cable for HMP228
Extension cable (10 m)
Carrying case
Carrying case for two probes (MMP78; DMP74A/B)
Probe accessories
Stainless steel filter
Protective cap
Others
Measurement indicator
Manual press tool
Plastic wrench
Calibration adapter for HMK15
Fitting body
Pressure fitting
Ball valve set (+fitting body+blanking plug)
MI70 Link- software interface kit
Order code
MI70EUROADAPTER
MI70UKADAPTER
MI70USADAPTER
MI70AUSADAPTER
27168ZZ
DRW216050
27159ZZ
213107SP
MI70CASE2
HM47453SP
DRW215988SP
MI70
HM36854SP
DRW216040SP
211302
DRW212076SP
210662SP
HMP228BVS
MI70LINK
54 ____________________________________________________________________M210498en-A
Chapter 15 _____________________________________________________ Technical Specifications
Dimensions in mm (inches)
MI70 Indicator
13.5 (0.53)
12 (0.47)
MMP78 probe
170 (6.69)
VAISALA _______________________________________________________________________ 55
advertisement
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Related manuals
advertisement