background image

Press the HOLD button to freeze the reading on the display. HOLD will appear on the top part of the 

6. 

display. Press the HOLD button again to return to the display of real-time temperature readings.

Press the button 9 to activate/deactivate the backlight.

7. 

Press the on/off button to switch the device off. If no button is pressed for 20 minutes, the device 

8. 

will automatically power off.

The section “Adjusting settings” describes how to deactivate the auto-off function.

Special functions

MAX/MIN button

Press once:

Real-time reading appears on top

• 

The maximum reading (MAX) of the current measurement process appears 

• 

underneath

Point in time, at which the maximum reading was measured, is displayed at 

• 

lower edge of the display in minutes and seconds (min:sec) or in hours and 

minutes (hour:min)

Press twice:

Real-time reading appears on top

• 

The minimum reading (MIN) of the current measurement process appears 

• 

underneath

Point in time, at which the minimum reading was measured, is displayed at 

• 

lower edge of the display in minutes and seconds (min:sec) or in hours and 

minutes (hour:min)

Press three times:

Real-time reading appears on top

• 

The average reading (AVG) of the current measurement process appears 

• 

underneath

The running total time of the current measurement process is displayed at 

• 

lower edge of the display in minutes and seconds (min:sec) or in hours and 

minutes (hour:min)

Press and hold the MAX/MIN button for approx. two seconds to return to normal display mode.

Adjusting settings

Press the SET button. SETUP will appear on the top left corner of the display. TYPE will appear on 

1. 

the bottom left corner.

Press the ENTER button to select the temperature sensor type.

2. 

Using the HOLD or MAX/MIN buttons, you can switch between types K and J. Confirm your selection 

3. 

by pressing the ENTER button. The display will show SLP.

Press the ENTER button to activate/deactivate the auto-off function.

4. 

Using the HOLD or MAX/MIN buttons, you can switch between SLP ON (auto-off function on, clock 

5. 

symbol appears top-right in display) and SLP OFF (auto-off function off, clock symbol no longer 

displayed). Confirm your selection by pressing the ENTER button. The display will show T1.

Press  the  ENTER  button  to  compensate  any  deviation  (OFFSET)  in  measurement  accuracy  of 

6. 

sensor T1. 

Press the HOLD or MAX/MIN buttons to set any deviation adjustment (± 5 ºC; ± 9 ºF/K). The 

7. 

displayed reading changes accordingly. Confirm your selection by pressing the ENTER button. 

You can find further details in the section “Determining deviation of a sensor’s measurement 

accuracy”.

To return to the normal display mode, press the SET button.

8. 

If you only want to make a specific adjustment, press the SET button and select the required 

point using the HOLD or MAX/MIN button. Then press the ENTER button and make the 

adjustment.

determining deviation of a sensor’s measurement accuracy

Turn the thermometer on and place the relevant sensor in an optional temperature calibrator or in 

1. 

any other reference location with a known and stable temperature.

Wait until the thermometer’s display has stabilised.

2. 

If there is a difference, you can manually compensate it (see section “Adjusting settings”).

3. 

MAINTENANCE ANd CLEANING

7. 

No maintenance is necessary for the device apart for occasional cleaning and the changing of the battery.

• 

Clean the exterior of the device with a soft, dry cloth or brush only.

• 

Never use aggressive or chemical cleaning agents, since this might damage the surface of the 

• 

housing or impair operation.

dISPOSAL

8. 

General

In order to preserve, protect and improve the quality of environment, protect human health 

and utilise natural resources prudently and rationally, the user should return unserviceable 

product to relevant facilities in accordance with statutory regulations.

The crossed-out wheeled bin indicates the product needs to be disposed separately and 

not as municipal waste.

Batteries / rechargeable batteries

The user is legally obliged 

(battery regulation)

 to return used batteries and rechargeable 

batteries. 

disposing used batteries in the household waste is prohibited!

 Batteries/ 

rechargeable batteries containing hazardous substances are marked with the crossed-out 

wheeled bin. The symbol indicates that the product is forbidden to be disposed via the 

domestic refuse. The chemical symbols for the respective hazardous substances are 

Cd

 = 

Cadmium, 

Hg

 = Mercury, 

Pb

 = Lead.

You can return used batteries/ rechargeable batteries free of charge to any collecting point of 

your local authority, our stores or where batteries/ rechargeable batteries are sold.

Consequently you comply with your legal obligations and contribute to environmental protection!

TECHNICAL dATA

9. 

Operating voltage:

3 x 1.5 V/DC battery (type AAA)

Max. current consumption:

approx. 7 mA

Measuring range:

-200 ºC to +1372 ºC / -328 ºF to +2501 ºF (K type)

-210 ºC to +1100 ºC / -346 ºF to +2012 ºF (J type)

Accuracy:

± 0.15 % rdg + 1 ºC / 1.8 ºF (> -100 ºC / -148 ºF)

± 0.5 % rdg + 2 ºC / 3.6 ºF  (< -100 ºC / -148 ºF)

Temperature sensor measuring range

(included):

-20 ºC to +250 ºC / -4 ºF to +482 ºF

Resolution:

0.1 ºC/ºF/K (< 1000)

1 ºC/ºF/K (≥ 1000)

Operating temperature:

0 ºC to +50 ºC / +32 ºF to +122 ºF 

Operating humidity:

max. 80 % (< 31 ºC / 87 ºF) 

linearly decreasing to  50 % (≥ 40 ºC / 104 ºF)

Storage temperature:

-10 ºC to +50 ºC / +14 ºF to +122 ºF

Storage humidity:

< 80 %

Dimensions (W x H x D):

62 x 28 x 162 mm

Weight:

183 g

 OPErATING INSTruCTIONS

Version 08/10

PL-120 T1 THErMOMETEr

Item No. 12 34 01

INTENdEd uSE

1. 

This product is designed for temperature measurement and is especially suitable for use in laboratories 

and industrial areas. Temperature measurement is done via a temperature sensor. Temperature can 

be measured with temperature sensors of type K and J. Measurement readings can be frozen on 

the screen. The product can display the minimum, maximum and average readings of a particular 

measurement process. Temperature can be displayed in ºC (Celsius), ºF (Fahrenheit) or K (Kelvin). The 

product features an auto-off and a backlight function. Power is supplied by three AAA batteries.

Measurements should not be carried out under unfavourable ambient conditions. Adverse conditions are:

Moisture or excessive humidity

• 

Dust and flammable gases, vapours or solvents.

• 

Thunderstorms or similar conditions such as strong electrostatic fields, etc.

• 

This product fulfils European and national requirements related to electromagnetic compatibility 

(EMC). CE conformity has been verified and the relevant statements and documents have been 

deposited at the manufacturer.

Unauthorised conversion and/or modification of the device are inadmissible because of safety and 

approval reasons (CE). Any usage other than described above is not permitted and can damage the 

product and lead to associated risks such as short-circuit, fire, electric shock, etc. Please read the 

operating instructions thoroughly and keep them for further reference.

CONTENT Of dELIVEry

2. 

Thermometer

• 

Temperature sensor (K-type)

• 

3 x AAA batteries

• 

Operating instructions

• 

SAfETy INSTruCTIONS

3. 

we do not assume liability for resulting damages to property or personal injury if 

the product has been abused in any way or damaged by improper use or failure to 

observe these operating instructions. The warranty/ guarantee will then expire!

The icon with exclamation mark indicates important information in the operating 

instructions. Carefully read the whole operating instructions before operating the 

device, otherwise there is risk of danger.

Persons / Product

The product is not a toy and should be kept out of reach of children!

• 

When used in conjunction with other devices, observe the operating instructions and safety notices 

• 

of  connected devices.

Protect the product from extreme temperatures, direct sunlight, strong jolts, high humidity, moisture, 

• 

flammable gases, vapours and solvents.

Do not place the product under any mechanical stress.

• 

If it is no longer possible to operate the product safely, take it out of operation and protect it from any 

• 

accidental use. Safe operation can no longer be guaranteed if the product: 

is visibly damaged, 

 -

is no longer working properly, 

 -

has been stored for extended periods in poor ambient conditions or 

 -

has been subjected to any serious transport-related stresses.

 -

In schools, training facilities, hobby or self-service workshops, handling of electrical devices must be 

• 

monitored by trained personnel.

When operating on commercial premises, the relevant accident prevention regulations of workers’ 

• 

compensation boards for electrical equipment must be observed.

Make sure there are no devices with strong electric or magnetic fields such as transformers, motors, 

• 

cordless telephones and radio-controlled devices in the vicinity of the product as these can influence 

the product.

Do not switch the product on immediately after it has been taken from a cold to a warm environment. 

• 

The condensation that forms might destroy the product. Allow the product to reach room temperature 

before switching it on.

Batteries

Correct polarity must be observed while inserting the batteries.

• 

Batteries should be removed from the device if it is not used for a long period of time to avoid 

• 

damage through leaking. Leaking or damaged batteries might cause acid burns when in contact with 

skin, therefore use suitable protective gloves to handle corrupted batteries.

Batteries must be kept out of reach of children. Do not leave the battery lying around, as there is risk, 

• 

that children or pets swallow it.

All the batteries should be replaced at the same time. Mixing old and new batteries in the device can 

• 

lead to battery leakage and device damage.

Batteries must not be dismantled, short-circuited or thrown into fire. Never recharge non-rechargeable 

• 

batteries. There is a risk of explosion!

Miscellaneous

Repair works must only be carried out by a specialist/ specialist workshop.

• 

If you have queries about handling the device, that are not answered in this operating instruction, our 

• 

technical support is available under the following address and telephone number: Voltcraft

®

, 92242 

Hirschau, Lindenweg 15, Germany, phone 0180 / 586 582 7

OPErATING ELEMENTS

4. 

1

2

3

4

5

6

9

8

7

1.  CFK button

6.  Display

2.  SET 

button

7. 

HOLD button

3.  ENTER button 8.  MAX/MIN button
4.  On/off button

9.  Backlight

5.  T1 port

INSErTING / rEPLACING BATTErIES

5. 

Unscrew the screw on the battery compartment cover using a Phillips screwdriver and take off the 

1. 

cover of the battery compartment.

Insert three AAA batteries, observing the correct polarity. Take note of the labelling on the inside of 

2. 

the battery compartment.

Close the battery compartment.

3. 

Replace the batteries when the battery icon appears on the display.

OPErATION

6. 

do not measure the temperature of live parts or leads, as touching them might 

• 

cause a potentially lethal electric shock. Also, the thermometer and sensor could 

be damaged.

The sensor included with delivery can only be used for measurements in dry 

• 

environments and on surfaces with a temperature of > -20 ºC and < +250 ºC. It 

is not suitable for use in humid environments or to measure the temperature of 

fluids.

The accuracy of the gauge is only assured when the thermometer is operated at a 

• 

temperature range of +18 ºC to +28 ºC (excluding the temperature sensor). 

The thermometer (excluding the temperature sensor) must not be used outside 

• 

the  operating  temperature  range.  Please  note  the  specifications  on  operating 

temperature in the Technical data section.

you can utilize the entire measurement range of the thermometer with optionally 

• 

available temperature sensors. 

Basic functions

Connect the temperature sensor to port T1 on the top of the device. Only one direction is possible. 

1. 

Please note the polarity labelling on the temperature sensors’ plug and on the side of the port.

You can also connect a temperature sensor of type J to the thermometer; these are optionally 

available.

Press the on/off button to switch the device on.

2. 

Place the sensor at the locations which you want to measure.

3. 

The display will show the temperature reading. If no temperature sensor is connected, four horizontal 

4. 

bars will be displayed instead of a temperature reading.

Press the CFK button to switch between Celsius (C), Fahrenheit (F) and Kelvin (K).

5. 

These operating instructions are published by Voltcraft®, 

Lindenweg 15, D-92242 Hirschau/ Germany, Phone +49 180 586 582 7.

All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the 

capture in electronic data processing systems require the prior written approval by the editor. Reprinting, 

also in part, is prohibited. 

The operating instructions reflect the current technical specifications at time of print. 

We reserve the right to change the technical or physical specifications.

© Copyright 2010 by Voltcraft®.

V3_0810_02-SB

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