
PCE-IR 90 Infrared Thermometer
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product search on: www.pce-instruments.com
Last change: 28 February 2022
v1.0

Contents
1 Safety notes ........................................................................................... 1
2 Specifications ........................................................................................ 2
3 Delivery scope ....................................................................................... 2
4 Device description ................................................................................ 3
5 Switching the meter on and off ........................................................... 5
6 Making a measurement ........................................................................ 5
7 Changing the sensor ............................................................................ 5
8 Changing the unit .................................................................................. 5
9 Bluetooth ............................................................................................... 5
10 Timer function ....................................................................................... 6
10.1 Stopwatch ........................................................................................................................ 6
11 Recharging the meter ........................................................................... 6
12 Contact ................................................................................................. 7
13 Disposal ................................................................................................. 7
© PCE Instruments

© PCE Instruments
1
1 Safety notes
Please read this manual carefully and completely before you use the device for the first time. The
device may only be used by qualified personnel and repaired by PCE Instruments personnel.
Damage or injuries caused by non-observance of the manual are excluded from our liability and
not covered by our warranty.
• The device must only be used as described in this instruction manual. If used otherwise,
this can cause dangerous situations for the user and damage to the meter.
• The instrument may only be used if the environmental conditions (temperature, relative
humidity, …) are within the ranges stated in the technical specifications. Do not expose
the device to extreme temperatures, direct sunlight, extreme humidity or moisture.
• Do not expose the device to shocks or strong vibrations.
• The case should only be opened by qualified PCE Instruments personnel.
• Never use the instrument when your hands are wet.
• You must not make any technical changes to the device.
• The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner,
no abrasives or solvents.
• The device must only be used with accessories from PCE Instruments or equivalent.
• Before each use, inspect the case for visible damage. If any damage is visible, do not
use the device.
• Do not use the instrument in explosive atmospheres.
• The measurement range as stated in the specifications must not be exceeded under
any circumstances.
• Non-observance of the safety notes can cause damage to the device and injuries to
the user.
We do not assume liability for printing errors or any other mistakes in this manual.
We expressly point to our general guarantee terms which can be found in our general terms of
business.
If you have any questions please contact PCE Instruments. The contact details can be found at
the end of this manual.

© PCE Instruments
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2 Specifications
-40 ... 300 °C, -40 ... 572 °F
±1 °C, ±1.8 °F at 0 ... 65 °C/32 ... 150 °F
±2.5 °C, ±4.5 °F at <0 °C/<32 °F
±1.5 % at >65 °C/150 °F
resistance temperature sensor
-40 ... 300°C, -40 ... 200°C, -40 ... 392°F
±1 °C, ±1.8 °F at -40 ... 200 °C/-40 ... 392 °F
±1.5 °C, ±4.5 °F at >200 °C/>392 °F
Bluetooth (data transfer)
mirco USB (for charging)
4.2 V 1300mAh battery
5 V DC / 1A fixed voltage supply
via mirco USB interface
0 ... 50 °C, <85% RH, non-condensing
176 x 55 x 40 mm / 6.9 x 2.2 x 1.6 in
3 Delivery scope
1 x infrared thermometer PCE-IR 90
1 x mirco USB charging cable
1 x charging station
1 x transport bag
1 x user manual

© PCE Instruments
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4 Device description
LED display. Temperature <4 °C
LED display. Temperature between 4 ... 65 °C
LED display. Temperature >65 °C
Up key to change parameters, change measuring mode
Down key to change parameters, unit key
On/off key, start and stop measurement
Battery compartment cover

Infrared temperature measurement active
Temperature measurement is carried out via the temperature probe
Temperature measurement is carried out via the infrared sensor
Measured value is displayed in °C
Measured value is displayed in °F
The maximum measured value is displayed
Measurement has been stopped. Displayed measured value is frozen.
The smallest value of the current measurement is displayed
Display of the largest measured value
Display of the smallest measured value

© PCE Instruments
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5 Switching the meter on and off
To switch the meter on and off, press and hold the on/off key for at least 2 seconds.
If the meter is not operated for 5 minutes, it switches itself off. This function cannot be deactivated.
6 Making a measurement
Press and release the on/off key once to start the measurement. The display shows "SCAN" when
the measurement is being made. When the reading is stable for 5 seconds, the measurement
ends automatically. The measurement can be ended manually by pressing the on/off key.
7 Changing the sensor
To select between the sensors, press and release the up key once. The display shows which
sensor is currently being used.
8 Changing the unit
Press and release the down key once to select °C or °F.
9 Bluetooth
Press the Bluetooth key to activate the Bluetooth function. To deactivate it again, press and hold
the key again for at least 3 seconds. As soon as the Bluetooth icon is active, the function is
activated.
To establish a connection to a mobile end device, first download the "MeterBox Pro" app from the
App Store. Then establish a connection via the app. After connecting, use the "Food
Thermometer" category in the app.
Note:
Do not connect the meter via the Bluetooth settings of the mobile end device.

© PCE Instruments
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10 Timer function
A timer can be started with the timer function. To do this, press and hold the timer key for at least
3 seconds. To set a time, press the up and down keys. The time can only be set in minutes.
Pressing the timer key starts the countdown. When the countdown is over, an audible alarm is
triggered. Press and release the on/off key once to enter measurement mode and make
measurements with the timer activated. The timer icon shows when the timer or stopwatch is
active.
10.1 Stopwatch
To start the stopwatch, first press and hold the timer key to enter timer mode. Then press the
timer key again to start the stopwatch. Press the timer key again to stop the timer. Press and hold
the timer key for two seconds to reset the stopwatch.
Press and release the on/off key once to enter measurement mode and make measurements
with the stopwatch activated. The timer icon shows when the timer or stopwatch is active.
11 Recharging the meter
To charge the meter, it can either be connected directly to a micro USB cable or placed in the
charging station. The battery status indicator shows whether the battery is being charged.

12 Contact
If you have any questions, suggestions or technical problems, please do not hesitate to contact
us. You will find the relevant contact information at the end of this user manual.
13 Disposal
For the disposal of batteries in the EU, the 2006/66/EC directive of the European
Parliament applies. Due to the contained pollutants, batteries must not be disposed of as
household waste. They must be given to collection points designed for that purpose.
In order to comply with the EU directive 2012/19/EU we take our devices back. We either reuse them or give them to a recycling company which disposes of the devices in line with law.
For countries outside the EU, batteries and devices should be disposed of in accordance
with your local waste regulations.
If you have any questions, please contact PCE Instruments.
© PCE Instruments
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© PCE Instruments
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PCE Instruments contact information
Germany France Spain
PCE Deutschland GmbH PCE Instruments France EURL PCE Ibérica S.L.
Im Langel 26 23, rue de Strasbourg Calle Mayor, 53
D-59872 Meschede 67250 Soultz-Sous-Forets 02500 Tobarra (Albacete)
Deutschland France España
Tel.: +49 (0) 2903 976 99 0 Téléphone: +33 (0) 972 3537 17 Tel. : +34 967 543 548
Fax: +49 (0) 2903 976 99 29 Numéro de fax: +33 (0) 972 3537 18 Fax: +34 967 543 542
info@pce-instruments.com info@pce-france.fr info@pce-iberica.es
www.pce-instruments.com/deutsch www.pce-instruments.com/french www.pce-instruments.com/espanol
United Kingdom Italy Turkey
PCE Instruments UK Ltd PCE Italia s.r.l. PCE Teknik Cihazları Ltd.Şti.
Unit 11 Southpoint Business Park Via Pesciatina 878 / B-Interno 6 Halkalı Merkez Mah.
Ensign Way, Southampton 55010 Loc. Gragnano Pehlivan Sok. No.6/C
Hampshire Capannori (Lucca) 34303 Küçükçekmece - İstanbul
United Kingdom, SO31 4RF Italia Türkiye
Tel: +44 (0) 2380 98703 0 Telefono: +39 0583 975 114 Tel: 0212 471 11 47
Fax: +44 (0) 2380 98703 9 Fax: +39 0583 974 824 Faks: 0212 705 53 93
info@pce-instruments.co.uk info@pce-italia.it info@pce-cihazlari.com.tr
www.pce-instruments.com/english www.pce-instruments.com/italiano www.pce-instruments.com/turkish
The Netherlands United States of America
PCE Brookhuis B.V. PCE Americas Inc.
Institutenweg 15 1201 Jupiter Park Drive, Suite 8
7521 PH Enschede Jupiter / Palm Beach
Nederland 33458 FL
Telefoon: +31 (0)53 737 01 92 USA
info@pcebenelux.nl Tel: +1 (561) 320-9162
www.pce-instruments.com/dutch Fax: +1 (561) 320-9176
info@pce-americas.com
www.pce-instruments.com/us