Vaisala CARBOCAP GM70 User manual

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
1/39
About this document
Version information
This document provides detailed instructions for installing, operating, and maintaining Vaisala CARBOCAP® Handheld
Carbon Dioxide Meter GM70.
Table 1. Document versions (English)
Document code Date Description
M010139EN-H April 2021
This manual. Document template and content organization update. Added
information about MI70 battery and device status icons and the calibration
reminder setting. Updated information about data transfer with MI70 Link and
stabilization time in adjustment instructions. Specifications and spare part
information updated. Removed references to discontinued products GMT220,
GMM220, GMK220, GMW115, and GMW20.
M010139EN-G April 2012 Previous version. New error codes added. General updates implemented.
Related manuals
Table 1. Related manuals
Document code Name
M210292EN Vaisala CARBOCAP® Carbon Dioxide Transmitter Series GMD20 User's Guide
M210450EN Vaisala Field Check Adapter 26150GM Quick Reference Guide
M210514EN Vaisala CARBOCAP® Carbon Dioxide Probe GMP343 User's Guide
M211501EN Vaisala CARBOCAP® Carbon Dioxide Probe GMP231 User Guide
M211659EN Vaisala CARBOCAP® Carbon Dioxide, Temperature, and Humidity Transmitter Series GMW90
User's Guide
M211799EN Vaisala CARBOCAP® Carbon Dioxide Probe GMP251 User Guide
M211897EN Vaisala CARBOCAP® Carbon Dioxide Probe GMP252 User Guide
Documentation conventions
WARNING! Warning alerts you to a serious hazard. If you do not read and follow instructions 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 highlights important information on using the product.
Tip gives information for using the product more efficiently.

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
2/39
Lists tools needed to perform the task.
Indicates that you need to take some notes during the task.
Trademarks
Vaisala® and CARBOCAP® are registered trademarks of Vaisala Oyj.
Windows® is either a registered trademark or trademark of Microsoft Corporation in the United States and other
countries.
All other product or company names that may be mentioned in this publication are trade names, trademarks, or
registered trademarks of their respective owners.

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
3/39
Product overview
Introduction to GM70
Vaisala CARBOCAP® Handheld Carbon Dioxide Meter GM70 measures volume concentration of CO2 gas and displays
the result in the units of ppm or %. The exceptional stability and reliability performance of GM70 comes from the
advanced silicon based Vaisala CARBOCAP® sensor.
Basic features of GM70
Numerical and graphical multilingual displays
Data logging possibility
A tool for checking the reading of fixed CO2 transmitters
A tool for adjusting Vaisala GMP220 series probes
Possibility for an analog output (voltage signal 0 … 1 V)
Sampling methods: diffusion sampling (GMH70 handle) or pump-aspirated sampling (GM70PUMP), alternatively
Multiprobe operation; any combination of 2 Vaisala DM70, GM70, HM70, and MM70 series probes can be used,
for example, for simultaneous CO2 and dew point measurements
The optional, ready-to-use MI70 Link Microsoft Windows® software, which allows an easy way to handle
measurement data using a USB instrument cable or an RS-232 serial communication cable.
Using GM70 with Vaisala carbon dioxide probes and transmitters is discussed in the respective User Guides, available at
www.vaisala.com.
Related reference
Related manuals
Interchangeable probes
By selecting the right GMP220 series probe you can choose the measuring range that best fits your application. The
measuring ranges vary from 0 … 10 000 ppm to 0 … 20 % concentrations of CO2. To change the measuring range, you
only have to change the probe.
Related reference
Probes
GM70 specifications
Parts description
Figure 1. GM70 parts

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
4/39
1 MI70 indicator
2 Charger socket
3 Connector ports I and II for probes and cables
4 Probe GMP221 or GMP222
5 Probe fastener
6 Handle GMH70
7 Adjustment button
8 Gas outlet
9 ON/OFF switch
10 Gas inlet
11 Measuring chamber
12 Probe GMP221 or GMP222
13 Probe connector
14 Connector to the MI70 indicator
Probes
The GMP220 series probes can be used with GM70. The table below lists the measuring ranges that can be selected for
the probes.
Table 1. GMP221 and GMP222
measuring ranges
Probe CO2 measuring ranges

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
5/39
Probe CO2 measuring ranges
GMP221
0 … 2 %
0 … 30 %
0 … 5 %
0 … 10 %
0 … 20 %
GMP222
0 … 2000 ppm
0 … 3000 ppm
0 … 5000 ppm
0 … 7000 ppm
0 … 10000 ppm
To obtain the best possible performance, it is recommended that the measurement range is chosen so that the actual
concentrations to be measured are roughly in the middle of the measuring range.
GM70PUMP for aspirated sampling
The GM70 aspiration pump consists of a pump and a measurement chamber for CO2 measurements. GM70PUMP is
designed for checking of fixed CO2 transmitters and for sampling from locations difficult to access. GM70PUMP is
connected to an MI70 indicator which displays the measurement result. The pump system is powered through the MI70
indicator.
Safety
The Vaisala CARBOCAP® Handheld Carbon Dioxide Meter GM70 delivered to you has been tested for safety and
approved as shipped from the factory. Note the following precaution:
CAUTION! Do not modify the unit or use it in ways not described in the documentation. Improper
modification or use may lead to safety hazards, equipment damage, failure to perform according to
specification, or decreased equipment lifetime.
ESD protection
Electrostatic Discharge (ESD) can damage electronic circuits. Vaisala products are adequately protected against ESD for
their intended use. However, it is possible to damage the product by delivering electrostatic discharges when touching,
removing, or inserting any objects in the equipment housing.
To avoid delivering high static voltages to the product:
Handle ESD‑sensitive components on a properly grounded and protected ESD workbench or by grounding
yourself to the equipment chassis with a wrist strap and a resistive connection cord.
If you are unable to take either precaution, touch a conductive part of the equipment chassis with your other hand
before touching ESD‑sensitive components.
Hold component boards by the edges and avoid touching component contacts.

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
6/39
MI70 indicator
MI70 indicator parts
Figure 1. MI70 indicator parts
1 Charger socket
2Function key shortcut buttons . The functions change according to what you are doing with the indicator.
3 Arrow buttons:
Move up in a menu
Move down in a menu
Enter a sub-menu
Return to previous menu level
4 Power On/Off button
5 Battery compartment at the back of the indicator
6 2 ports with M12 4-pin female connectors for connecting probes and instruments. The ports are labeled I and II.
To open menus, press an arrow button and then press the shortcut buttons. To activate a function shown above the
shortcut button, press the shortcut button. To navigate in the menus, press the arrow buttons.
Installing and recharging MI70 batteries
Vaisala recommends using the rechargeable battery pack (item code 26755) with GM70, instead of alkaline
batteries.

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
7/39
If you are using alkaline batteries, unscrew the back plate of the indicator and insert the batteries. Do not attempt to
recharge standard alkaline batteries.
If you ordered MI70 with a rechargeable battery, it is already in place as shipped from the factory. The delivered
batteries have been pre-charged.
To recharge the rechargeable battery:
1. Plug in the charger connector to the MI70 indicator. The socket is located at the top of the indicator, covered by a
rubber seal.
2. Connect the charger to a wall socket. An animated battery icon in the left corner of the display indicates that the
battery is charging. The recharge duration (typically 4 … 5 h) depends on the charge level of the battery.
A new battery takes approximately 3 charging cycles to reach its maximum capacity.
Do not store the batteries empty. Empty batteries may not charge after an extended storage period.
MI70 battery status information
The status of the MI70 battery is shown by the battery icon in the upper left corner of the display. Possible statuses are
listed in the following table.
Table 1. MI70 battery status indicator
Battery status indicator graphic Description
Battery status icon. The icon can show the following info:
0 … 8 bars, no animation:
batteries are in use, a charger is not connected
if a charger is connected: non-rechargeable batteries installed
if a charger is connected: waiting for the battery temperature to
settle between 0 … +40 °C (+32 … +104 °F)
if a charger is connected and the icon remains at 8/8 bars: the
battery is full
Animated battery status icon: battery is charging (or recovering after
emptying out completely). The charging animation is shown also when the
indicator is powered off.
Battery icon not present: batteries are not installed
An empty battery icon with an X over it means that the battery cannot be recharged
and must be replaced. If the indicator is powered on, a notification about not being
able to charge the battery is shown on the MI70 screen.
You can order replacement batteries from Vaisala (item code 26755).
To keep the rechargeable MI70 battery in good working condition, recharge MI70 monthly if the indicator is
not in use.
MI70 first start-up settings
When taking MI70 into use for the first time, configure the basic settings (language, date, and time) as instructed below.
1. Press the Power On/Off button in MI70 to switch the indicator on.
2. Press any of the arrow buttons and open the menu by pressing Open.
3. Select Settings using the buttons and press .
4. Select User interface and press .
5. Select Language and press Set.
6. Select the language using the buttons. Confirm the selection by pressing Select.
The language selection can be changed later in the user interface settings of MI70.
7. To set the date, return to the Settings menu by pressing .
8. Select Date and press Set. Change the date using the buttons. To confirm the selection, press Select.

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
8/39
To select an alternative date format, select Date format and press Set. You can select from 3 alternative formats.
Press Select to confirm the selection.
9. To set the time, return to the Settings menu by pressing
10. Select Time and press Set. Change the time by using the arrow buttons. Confirm the selection by pressing
OK. As a default, the time format is based on the 24-hour clock. If you want to use the 12-hour clock, select 12-
hour clock and press On.
11. To ensure the best possible accuracy, set the actual pressure and temperature values to GM70 as follows:
Select the pressure setting (P: 1013 hPa, default), press Unit to select unit (hPa or bar), press Set,
set the pressure value by using the arrow buttons. Press OK to save the value.
Select the temperature setting (T: 25.0 °C, default), press Unit to select unit (°C or °F), press Set,
set the temperature value by using the arrow buttons. Press +/- to change the sign of the value. Press
OK to save the value.
12. To return to the basic display, press Exit.
Changing the rechargeable battery pack
New rechargeable battery pack
Medium-sized flat head screwdriver
In case you are installing a rechargeable battery pack in the MI70 indicator and you have a device with alkaline batteries,
remove the metal contact from the probe port end of the battery compartment before installing the battery pack.
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 carefully pulling it up from the wires.
3. Connect the black connector of the new battery pack. Make sure the position of the connector is as shown in the
following figure (red and black wires are on the upper edge of the connector). Do not push the connector with
conducting material.

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
9/39
4. Place the battery pack in the compartment.
5. Close the back plate and tighten the screw.
6. Recharge the indicator before use.

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
10/39
Measuring carbon dioxide
Overview
This chapter consists of instructions on how to carry out carbon dioxide measurements.
The results of carbon dioxide measurements are affected by the air pressure and the temperature of the measurement
conditions. For achieving the most accurate measurements in high altitudes where the barometric pressure is clearly
lower than in the sea level, the actual atmospheric pressure value should be set to GM70. The acceptable pressure
value range is 700 … 1300 hPa.
Before measurements ensure that the air pressure and temperature settings are correct. Set the correct
settings as instructed in Setting actual pressure value and unit.
Taking measurements (diffusion sampling with GMH70
handle)
When using the MI70 indicator for the first time, see MI70 first start-up settings before proceeding to take
measurements.
To take measurements using the GMH70 handle:
1. Connect the probe cable to the MI70 indicator's connector port.
2. Switch MI70 on by pressing the Power ON/OFF button.
3. Wait for about 15 seconds to get the reading. For the most accurate readings wait for 15 minutes to reach the full
operating state of GM70.
4. Install the probe to the measuring position. Avoid exhaling near the probe as this increases the CO2
concentration.
5. The MI70 basic display opens. Allow the reading to stabilize.
CAUTION! Handle the probe carefully. Strong impact or falling may damage the probe.
If you need to disconnect the probe, first press the Power ON/OFF button to switch the MI70
indicator off. This ensures that all settings and data are saved properly.
Taking measurements (pump-aspirated sampling with
GM70PUMP)
When using the pump-aspirated system it is recommended to power the system by using the charger socket
connected to a wall socket.
Only one pump-aspirated system can be connected to MI70 at a time.
To use GM70PUMP for pump-aspirated sampling:
1. Connect one end of the sampling tube to the gas inlet (marked with IN), if using a tube.
2. Connect the black cable of GM70PUMP to the MI70 indicator's connector port.

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
11/39
3. Plug in the charger socket of MI70 and connect the charger socket to a wall socket.
4. Connect the GMP220 series probe to the probe connector of GM70PUMP.
5. Insert the probe in the measuring chamber. Note that to have a tight installation, the 2 O‑rings on the opening of
the measuring chamber should not match together with the filter edge or the tapes on the probe (see Figure 1).
When operating the pump, especially when taking a sample from hot and humid conditions into room
temperature, take care that no condensation forms on the probe.
6. Install the other end of the sampling tube to the sampling location.
7. Switch on the MI70 indicator.
8. Switch on GM70PUMP.
9. The basic display opens. Wait for a few minutes to get a stabilized reading. For the most accurate readings wait
for 15 minutes to reach the full operating state of GM70.
Figure 1. Correct connection of GM70PUMP
1 For a tight connection, match the 2 O-rings together with the smooth probe surface.
The battery indicator of the MI70 display does NOT show the actual recharge level when the pump is in
operation.
Measuring multiple parameters simultaneously
MI70 is a generic indicator that can be used with Vaisala interchangeable dew point (DM70 series), humidity
(HM70 series), carbon dioxide (GM70 series), and moisture in oil (MM70 series) probes. Two different types of probes
can be connected to MI70 simultaneously.
1. Switch off the MI70 indicator.
2. Connect the 2 probes to the connector ports (port I and II) on the bottom of the indicator.
3. Switch on MI70.
4. Check that the environment settings of the probes in port I and II are the same if you are taking measurements
from the same condition. In this case, select Yes when MI70 prompts you to check the environment settings.
5. When measuring humidity and CO2 simultaneously, you can use the HMP70 probe's temperature data to
compensate the CO2 measurement.
a. Select temperature (T) and press Set.
b. MI70 asks if you want to link the measured T value to environment parameter: to link, press Link and
then press Exit.
6. The reading of the probe in port I is now displayed on the upper row(s) and the reading of the probe in port II on
the lower row(s) of the MI70 display.
Figure 1. Display example with carbon dioxide and temperature and humidity probes connected
simultaneously

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
12/39
7. To achieve the most accurate measurements, set the actual temperature value measured with the temperature
and humidity probe to GM70.

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
13/39
Displays and menus
Basic display
Figure 1. GM70 basic display
1 Battery indicator. Shows the current status (charge) of the battery.
2 Icon that indicates that GM70 is communicating with a PC. If the PC cable is not connected, this icon is not shown.
3 Pressure and temperature settings.
4 Selected parameters (ppm or %).
5 Function key Graphic shows the readings as a curve.
6 Function key Hold/Save freezes the display and you can save the reading in MI70 memory.
7 Function key Record is a shortcut to the Recording/Viewing menu.
You can change the default function key shortcuts (Graphic, Hold/Save, Record) to other menus or functions in Main
menu > Settings > User interface > Program shortcut keys.
Graphical display
The graphical display shows you the measurements as a curve (the curve of the uppermost parameter shown in the
basic display). From the curve you can examine the data trend and history of the last minutes.
To open the graphical display, select Graphic in the basic display or select Main menu > Display > Graphic history >
Show.
To get the statistical info on the graph area (minimum, maximum, and average values), press Info.
To get the curve of the other selected parameters, press Next. To get the curves of all the parameters, press Next until
the text All appears, and then select All.
To zoom in and out, press the up/down arrow buttons.
To move back and forward in the timeline, use the left/right arrow buttons.

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
14/39
Main menu
In the main menu, you can configure the MI70 settings and basic display options, view information about the probe,
access recordings and clear the memory, set alarms, start adjustments, and use the analog output option of the MI70
indicator.
To open the main menu and navigate in the menus:
1. Go to the basic display.
2. Press any arrow button, then select Open (must be pressed within 5 seconds or the indicator returns to the
basic display).
3. Move in the menus using the buttons.
4. Select an item with the button.
5. To return to the previous level, press .
6. To return to normal operation, press Exit.
Figure 1. GM70 menus
1 Main menu
2 Display menu
3 Functions menu
4 Recording/Viewing menu
5 Environment menu
6 Settings menu

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
15/39
MI70 status icons
Table 1. MI70 status iconsIcons that inform you about the status of MI70 (for example, battery status and alarm
notification) are shown on the upper left corner of the display. Multiple icons can be shown simultaneously.
Icon Description
Battery status icon. The icon can show the following info:
0 … 8 bars, no animation:
batteries are in use, a charger is not connected
if a charger is connected: non-rechargeable batteries installed
if a charger is connected: waiting for the battery temperature to settle between
0 … +40 °C (+32 … +104 °F)
if a charger is connected and the icon remains at 8/8 bars: the battery is full
Animated battery status icon: battery is charging (or recovering after emptying out
completely). The charging animation is shown also when the indicator is powered off.
Battery icon not present: batteries are not installed
The battery can no longer be charged and must be replaced. If the indicator is powered on, a
notification about not being able to charge the battery is shown on the MI70 screen.
You can order replacement batteries from Vaisala (item code 26755).
Recording icon. Shows that the measurements are being recorded. The bar shows for how
long the recording will continue (a set time limit or until the memory runs out). The recording
icon and bar are shown also when the indicator is powered off.
Calibration reminder icon. Appears when a calibration reminder has been set to inform that a
user-defined interval has passed and calibration is due.
Analog output icon. Shown when the analog output mode is in use.
PC connection icon. Shown when the indicator is connected to a PC with a cable.
Alarm icon. Shown when the measurement has reached a user-defined alarm limit.
Related reference
MI70 battery status information
Setting calibration reminder
Setting an alarm
Selecting and scaling analog output
Recording data
Transferring recorded data to PC with MI70 Link

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
16/39
Settings
Setting actual pressure value and unit
Figure 1. Environment menu
For achieving the most accurate measurements in high altitudes where the barometric pressure is clearly lower than in
the sea level, the actual atmospheric pressure value should be set to GM70. The acceptable pressure range is 700 …
1300 hPa. Pressure is given in the units of hPa or bar.
To configure the pressure value:
1. Open the menu by pressing Open.
2. Select Environment and press .
3. Select pressure value, press Unit and then press Set.
4. Set the pressure value with the arrow keys and press OK to save the value.
5. To change the unit, press Unit. The default unit is hPa.
6. To return to the basic display, press Exit.
Setting actual temperature value and unit
For achieving the most accurate measurements, the actual temperature value should be set to GM70. The acceptable
temperature range is -20 ... +60 ºC (-4 ... +140 ºF).
1. Open the menu by pressing Open.
2. Select Environment and press .
3. Select temperature value and press Set.
4. Set the temperature value with the arrow keys and press OK to save the value.
5. To change the unit, press Unit. The default unit is ºC.
6. To return to the basic display, press Exit.
If you are using HMP75 or some other humidity probe, the temperature information can be linked to
compensate the CO2 reading of GM70. For more information on simultaneous measurements, see
Measuring multiple parameters simultaneously.
Display settings
Figure 1. Display setting menus

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
17/39
Selecting parameters and units
In the MI70 user interface, measurement parameters are referred to as quantities.
The unit of the parameter can be selected between ppm and %. The default unit is ppm for measuring ranges with upper
limit of 10 000 ppm or less. For measuring ranges with upper limit of 2 … 20%, the default unit is %.
1. Open the menu by pressing Open.
2. Select Display and press .
3. Select Quantities and units and then press .
4. To select a parameter, move on the desired parameter using the arrow buttons and then press Select.
5. To change the unit, move on the desired parameter using the arrow buttons and then press Unit.
6. To hide a parameter, move on the desired parameter using the arrow buttons and then press Hide.
7. To return to the basic display, press Exit.
8. If you want to check the environment settings, press Yes. Otherwise press No.
Measurement units (ppm and %) express the CO2 concentration by gas volume.
1% CO2 = 10 000 ppm CO2
Rounding
When using % units, you can select a 2 or 3-decimal display by using the Rounding options. As a default, rounding is
turned off (= a 3-decimal display is in use).
1. Open the menu by pressing Open.
2. Select Display and then press .
3. Select Rounding.
4. To turn rounding on, press On. To turn rounding off, press Off.
5. To return to the basic display, press Exit.
Rounding does not affect the measurement accuracy defined in the device specifications.
Holding and saving the display
With the Hold/Save function, you can freeze a certain display reading. This reading can be saved in the MI70 memory
and it will be available even after MI70 is disconnected from the transmitter.
1. In the basic display, select Hold/Save. Alternatively, select Main menu > Display > Hold/Save display > Hold.
2. Press Save.
3. To view the saved display, go to basic display and select Record > View recorded data. Alternatively, select Main
menu > Recording/Viewing > View recorded data.

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
18/39
A list of saved displays and data recordings appears. The icons on the left of the date and time indicate whether
the file is a saved display or a longer recording of data:
Saved display
Data recording
4. Select the saved display based on date and time by pressing the right arrow button.
User interface settings
Figure 1. User interface settings menus
Selecting language
You can select any of the following languages for the user interface: English, Finnish, Chinese, Russian, Japanese,
Swedish, French, German, or Spanish.
1. Open the menu by pressing Open.
2. Select Settings and then press .
3. Select User interface and then press .
4. Select Language and press Set.
5. Choose the correct language and press Select.
6. To return to the basic display, press Exit.

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
19/39
Correcting language selection
1. Return to the basic display by pressing the rightmost button until the basic display appears.
2. Go to the Language selection menu by pressing first and then the button in the middle.
3. Then press , then , then again, and finally press the button in the middle.
4. Reselect the language.
Configuring automatic power off
As a default, MI70 powers off after 15 minutes of inactivity. This also saves battery. The inactivity setting can be changed
to 60 minutes or completely turned off.
1. Open the menu by pressing Open.
2. Select Settings and press .
3. Select User interface and press .
4. Select Auto power off and press Set.
5. Choose an inactivity time option and press Select.
6. To return to the basic display, press Exit.
Programming shortcut keys
1. Open the menu by pressing Open.
2. Select Settings and press .
3. Select User interface and press .
4. Select Program shortcut keys and press Start.
5. Press the shortcut key you want to change, for example, Hold/Save.
6. If you want to replace Hold/Save with the pressure (P) function, select Environment > P with the arrow buttons
and then press Select. To confirm your selection, press Yes. Otherwise press No and continue from step 4.
7. To return to the basic display, press Exit.
Figure 1. Hold/Save replaced by Pressure (P) shortcut
1 Hold/Save shortcut key replaced by P

07/11/2022 15:24
PDF extract of GM70 User Guide
https://docs.vaisala.com/internal/api/webapp/print/3c86a12e-f903-48c3-a995-1fffae38a687
20/39
Configuring button tones and backlight
To turn on or off the backlight or the sound effects for the buttons:
1. Open the menu by pressing Open.
2. Select Settings and press .
3. Select User interface and press .
4. To turn the sound effect on or off, select Key Click and press On/Off.
5. To turn the backlight on or off, select Backlight on key press and press On/Off.
6. To return to the basic display, press Exit.
Date and time
As a default, the time format is based on the 24-hour clock. Also a 12-hour clock can be used.
The default date format is day.month.year, for example, 25.4.2020. The date format can be changed to month.day.year.
or year.month.day.
1. Open the menu by pressing Open.
2. Select Settings and press .
3. Select Date and time and press .
4. For the desired date, select Date and then press Set. Use the arrow buttons to change the date. Confirm the
selection by pressing Select. To change the date format, select an option and press Select.
5. For the desired time, select Time and press Set. Use the arrow buttons to change the time. To confirm the
selection, press OK. To change the time format, select 12-hour clock and press On/Off.
6. To return to the basic display, press Exit.
Setting calibration reminder
You can set a calibration reminder to notify when calibration is due. Choose an interval of 3, 6, 12, or 24 months. By
default, the reminder is off.
Figure 1. Calibration reminder menu
Make sure the MI70 date and time settings are correct when using the calibration reminder.
1. Open the menu by pressing Open.
2. Select Settings and press .
3. Select Calibr. reminder and press Set.
4. Choose a reminder interval option and press Select.
5. To return to the basic display, press Exit.
Device information
Figure 1. Device information menu