Extech Instruments TM100 User manual

User's Guide

Digital J/K Type Thermometer

Model TM100

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TM100-EU-EN v1.3 12/13

WARNING

To avoid electrical shock or personal injury, do not apply more than

20Vrms between the thermocouple inputs or between the thermocouple

and earth ground

Introduction

Congratulations on your purchase of the Extech TM100 Digital Thermometer with single K/J-type

input. This device is shipped fully tested and calibrated and, with proper use, will provide years of

reliable service. Please visit our website (www.extech.com) to check for the latest version of this

User Guide, Product Updates, and Customer Support.

Safety

To prevent personal injury or meter damage, use the meter only as specified in this guide

Description

Meter

1. Thermocouple input connector

2. Function buttons (Power, Enter, C-F-K)

3. Function buttons (Hold, MAX/MIN, Set)

4. LCD display

5. Battery compartment

Display

1. Setup

2. Offset option

3. Hold mode

4. Auto power off

5. Upper display T1 reading

6. Temperature units

7. Lower display (max, min,

avg, offset value of T1)

8. Max, Min and Average

9. Time display

10. K/J type thermocouple

11. Low Battery

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Operation

Connecting thermocouples

1. This meter accepts a K/J-type thermocouple with spade lugs (sub-miniature type with one

spade wider than the other).

2. Plug the thermocouple into the meter's thermocouple input jack.

Measuring

1. Press the button to switch ON the thermometer on. After 1 second the thermometer will

display the first temperature reading (upper display).

2. Press the C-F-K button to select the desired temperature unit of measure. A display icon will

reflect the selection.

3. Touch the object to be measured with the probe. Read the measured temperature on the

display.

Note: If the display indicates “OL” the temperature is outside the measurement range. The

display shows "- - - -" when a thermocouple is not connected.

MAX/MIN/AVG mode

Press MAX/MIN to capture and step through the maximum (MAX), minimum (MIN) and average

(AVG) temperature values. These values will be shown in the lower display with an elapsed time

reference below (hrs:mins, mins:secs).

1. Press MAX/MIN to enter this mode.

2. Press MAX/MIN to step through maximum, minimum and average readings.

3. Press and hold MAX/MIN for 3 seconds to return to normal mode.

Data Hold

Press the HOLD button to freeze the reading in the display. HOLD will appear at the top right of

the display. Press the HOLD button again to return to normal operation mode.

Backlight

Press the SETUP button to switch the backlight OFF/ON.

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Setup option

The setup option is used to select the thermocouple type that matches the type that will be

connected to the meter, to switch the sleep mode OFF/ON, and to adjust the thermocouple offset.

Note: In the setup mode, the upper display shows the menu items and the lower display shows

the selection for a given menu item.

Press and hold the SET button for 3 seconds to enter or exit the Setup mode. When the

thermometer is in Setup mode, the display shows the SETUP display icon.

Set Type J or K thermocouple

1. Press ▲or ▼to scroll to the “TYPE” setting (shown on the bottom left of the display).

2. Press ENTER to choose the option.

3. Press ▼to toggle between J and K.

4. Press and hold the SET button for 3 seconds to save the setting and return to normal mode.

Set Sleep/Non-sleep mode

The thermometer enters sleep mode by default. The meter will automatically shut off after 20

minutes of inactivity (no buttons pressed). When the thermometer is in Setup mode, the display

shows the SETUP display icon.

1. Press ▲or ▼to scroll to the SLP setting.

2. Press ENTER to choose the option; On or OFF will appear in the display.

3. Use the arrow key ▼to select ON or OFF.

4. Press ENTER to store the new setting.

5. Press and hold the SET button for 3 seconds to return to normal mode.

Set Offset

Use the offset option in Setup (T1 menu item) to adjust the thermometer’s readings to

compensate for known temperature offset at a specific temperature. The adjustment range is ±

5.0°C or ± 9.0 °F.

1. Plug the thermocouple into the input connector.

2. Place the thermocouple into the known, stable temperature environment (such as an ice

bath or dry well calibrator). Allow the reading to stabilize.

3. Use the arrow keys ▲▼to scroll to the “T1”option and then press ENTER.

4. Change the offset temperature reading (upper display) by pressing ▼until the desired

temperature is reached.

5. Press and hold the SET button for 3 seconds to return to normal mode.

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Replacing the Batteries

1. Switch OFF the thermometer.

2. Loosen the battery compartment screw and remove the compartment door.

3. Replace the AAA batteries.

4. Replace the battery door and tighten the screw.

Never dispose of used batteries or rechargeable batteries in household waste.

As consumers, users are legally required to take used batteries to appropriate

collection sites, the retail store where the batteries were purchased, or wherever

batteries are sold.

Disposal: Do not dispose of this instrument in household waste. The user is obligated to take end-of-

life devices to a designated collection point for the disposal of electrical and electronic equipment.

Other Battery Safety Reminders

oNever dispose of batteries in a fire. Batteries may explode or leak.

oNever mix battery types. Always install new batteries of the same type.

Specifications

Temperature Range:

K type thermocouples -200°C to 1372°C (-328°F to 2501°F)

J type thermocouples -210°C to 1100°C (-346°F to 2012°F)

Note that thermocouple wire may be insulated with materials that cannot withstand temperatures

in the ranges listed above. Check that the thermocouples used are rated for the temperature

measurements to be made.

Temperature accuracy:

T1 Above –100 °C (-148 °F) ± [0.15%rgd+1°C (1.8°F)]

T1 Below –100 °C (-148 °F) ± [0.5%rgd+2°C (3.6°F)]

Display Resolution: 0.1°C /°F /°K <1000, 1°C /°F /°K >1000

Power supply: Three (3) AAA 1.5V batteries

Operating Temperature: 0°C to 50°C (40°F to 122°F)

Storage Temperature: 10°C to 50°C (14°F to 122°F)

Dimensions: 220 x 63 x 28mm (8.7 x 2.5 x 1.1”)

Weight: 200g (7oz)



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