Amprobe TMD-50 User Manual

TMD-50

Thermocouple
Thermometer K Type

Users Manual

• Mode d’emploi

• Bedienungshandbuch

• Manual d’Uso

• Manual de uso

TMD-50

Thermocouple
Thermometer K Type

Users Manual

June 2010, Rev.1
©2010 Amprobe Test Tools.
All rights reserved. Printed in Taiwan

English

Limited Warranty and Limitation of Liability

Your Amprobe product will be free from defects in material and
workmanship for 1 year from the date of purchase. This warranty
does not cover fuses, disposable batteries or damage from accident,
neglect, misuse, alteration, contamination, or abnormal conditions
of operation or handling. Resellers are not authorized to extend
any other warranty on Amprobe’s behalf. To obtain service during
the warranty period, return the product with proof of purchase
to an authorized Amprobe Test Tools Service Center or to an
Amprobe dealer or distributor. See Repair Section for details. THIS
WARRANTY IS YOUR ONLY REMEDY. ALL OTHER WARRANTIES ­WHETHER EXPRESS, IMPLIED OR STAUTORY - INCLUDING IMPLIED
WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR
MERCHANTABILITY, ARE HEREBY DISCLAIMED. MANUFACTURER
SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
OR CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM ANY
CAUSE OR THEORY. Since some states or countries do not allow the
exclusion or limitation of an implied warranty or of incidental or
consequential damages, this limitation of liability may not apply
to you.

Repair

All test tools returned for warranty or non-warranty repair or
for calibration should be accompanied by the following: your
name, company’s name, address, telephone number, and proof of
purchase. Additionally, please include a brief description of the
problem or the service requested and include the test leads with
the meter. Non-warranty repair or replacement charges should be
remitted in the form of a check, a money order, credit card with
expiration date, or a purchase order made payable to Amprobe®
Test Tools.

In-Warranty Repairs and Replacement – All Countries

Please read the warranty statement and check your battery before
requesting repair. During the warranty period any defective test
tool can be returned to your Amprobe® Test Tools distributor for
an exchange for the same or like product. Please check the “Where
to Buy” section on www.amprobe.com for a list of distributors near
you. Additionally, in the United States and Canada In-Warranty
repair and replacement units can also be sent to a Amprobe® Test
Tools Service Center (see address below).

Non-Warranty Repairs and Replacement – US and Canada

Non-warranty repairs in the United States and Canada should be
sent to a Amprobe® Test Tools Service Center. Call Amprobe® Test
Tools or inquire at your point of purchase for current repair and
replacement rates.

In USA In Canada
Amprobe Test Tools Amprobe Test Tools
Everett, WA 98203 Mississauga, ON L4Z 1X9
Tel: 877-AMPROBE (267-7623) Tel: [phone]

Non-Warranty Repairs and Replacement – Europe

European non-warranty units can be replaced by your Amprobe®
Test Tools distributor for a nominalv charge. Please check the
“Where to Buy” section on www.amprobe.com for a list of
distributors near you.
European Correspondence Address*

Amprobe® Test Tools Europe
In den Engematten 14
79286 Glottertal, Germany
Tel.: [phone] - 0
*(Correspondence only – no repair or replacement available from
this address. European customers please contact your distributor.)

TMD-50 Thermocouple Thermometer K Type

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1

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5
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1) “

” Power Button

2) °C /°F Button

3) “

” Button

4) “ADJ” Button

5) “p/REL” Button

6) “q/HOLD” Button

7) “T1 T2/T1-T2” Button

8) “MAX/MIN” Button

9) “>2S APO/ENTER”
Button

10) LCD Display

11) T1/T2 Input

Screen Display

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3

2

1) Temperature display

2) Low BATT display

3) K type of T/C
thermocouple

4) Auto power off

5) MAX/MIN reading

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1

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6) Relative mode

7) Data HOLD mode

8) Degrees °C /°F

9) T1/T2 thermocouple
or T1-T2 differential

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CONTENTS

SYMBOLS ............................................................................ 2

UNPACKING AND INSPECTION .......................................... 2

INTRODUCTION .................................................................. 3

Features ..........................................................................3

OPERATION INSTRUCTIONS ...............................................3

“

“ Power Button ......................................................... 3

“°C/°F” Selecting the Temperature Scale ..................... 3

“

” Button: Display Back-Light ................................... 3

“ADJ” Button: Adjust thermocouple offset ................. 4

“p/REL” Button ............................................................. 4

“q/HOLD” Button ......................................................... 4

“T1 T2/T1-T2” Button ....................................................4

“MAX/MIN” Button ....................................................... 5

“>2S APO/ENTER” Button ............................................. 5

SPECIFICATION .................................................................... 5

MAINTENANCE ................................................................... 7

1

SYMBOLS

Caution! Refer to the explanation in this Manual



Conforms to relevant Australian standards



Complies with European Directives



Tested Comply With FCC Standards

Do not dispose of this clamp meter as unsorted



municipal waste.





WARNING and PRECAUTIONS

• To avoid electrical shock, do not use this instrument
when working voltages at the measurement surface
over 24V AC or DC.

• To avoid damage or burns, do not make
temperature measurement in microwave ovens.

• Repeated sharp exing can break the thermocouple
leads. To prolong lead life, avoid sharp bends in the
leads, especially near the connector.

UNPACKING AND INSPECTION

Your shipping carton should include:

1 TMD-50 meter

1 Manual

2 K type Thermocouple

4 AAA Batteries

1 Plain white box

If any of the items are damaged or missing, return
the complete package to the place of purchase for an
exchange.

2

INTRODUCTION

There are 2 sets of sockets for thermocouple plugs at the
top of instrument marked with T1 and T2.

Features

• Highly accurate dual input thermometer with 0.1%

basic accuracy.

• Dual input T1, T2, T1-T2.

• Thermocouple offset adjust.

• Large display for easy to read.

• Robust protective Holster.

• Auto-Power Off.

• Display back-light.

• MIN/MAX/AVG/REL/HOLD functions.

• Wide measuring ranges for versatile applications

OPERATING INSTRUCTIONS

“ ” Power Button

Press the “ ” key to turn on or off thermometer. In the

MAX/MIN record mode can not power off, must leave
MAX/MIN record mode then power off.

“ °C/°F ” Selecting the Temperature Scale

Reading are displayed in either degrees Celsius(°C) or
degrees Fahrenheit(°F). When the thermometer is turned
on, it is set to the temperature scale that was in use
when the thermometer was last turned off. To change
the temperature scale, press the “°C/°F” key.

“ ” Button: Display Back-Light

Press the key to turn on the Back-Light. Press the “ ”
key again to make the Back-Light lighter and press “ ”

3

key once more to cancel the Back-Light function.
Back-Light on

g lighter g Back-Light off

“ADJ” Button: Adjust thermocouple offset

1. Insert the bead wire into a known temperature (T)
until the display equal to known temperature (T).
exp: ice point at 0°C boiling water at 100°C (Press
“ADJ” key).

2. Press “p” or “q” to add or subtract the value.

3. It can be adjusted ±6°C (±10.8°F) of default. If you

can’t adjust your T/C, please check your T/C or send

the meter to be calibrated.

4. Press “ENTER” key to confirm.

“p/REL” Button

Press “REL” key to enter Relative mode, zero the display,
and store the displayed reading as a reference value and
annunciator REL is displayed. Pressing “REL” key over 2
seconds to exit the relative mode.

“q/HOLD” Button

Press the “HOLD” key to enter the Data Hold mode,
the “HOLD” annunciator is displayed at the higher
center of display. When HOLD mode is selected, the
thermometer held the present readings and stops all
further Measurements. Press the “HOLD” key again
cancels HOLD mode, causing thermometer to resume
taking measurements.

“T1 T2/T1-T2” Button

Press “T1”, “T2”, “T1-T2” key to select input mode T1,
T2 or T1-T2.
The input selection indicates which input is selected
for display. T1 thermocouple, T2 thermocouple or the
differential between the two thermocouples(T1-T2),
when the thermocouple is turned on, it is set to T1.

4

“MAX/MIN” Button

Press “MAX/MIN” key to enter the MIN MAX recording
mode. (Displays the Maximum reading, Minimum
reading, “MAX-MIN”, “AVG” reading stored in record
mode). Press “MAX/MIN” key to cycle through the MAX,
MIN, MAX-MIN, “AVG” readings. In this mode, press
“HOLD” key to stop recording, all values are frozen,
press again to restart recording.

In this mode, the APO function and other keys is
disabled, excluding “HOLD” and “ ” keys. To prevent
accidental loss of MAX, MIN and MAXMIN, in this mode
can only be cancelled by pressing and holding down
the “MAX/MIN” key for 2 seconds to exit and erased
recorded reading.

“>2S APO/ENTER” Button

Pressing and holding down “APO” key for 2 seconds to
trigger on or off APO mode, and then APO annunciator
will appear or disappear on the display. Power is
automatically turn off, if no operation for a period of
time, and “APO” annunciator is displayed at upper-left
corner when APO function is enabled.

SPECIFICATION

Electrical

Temperature
Scale

Measurement
Range

Auto range 0.1°C/1°C, 0.1°F/1°F

Celsius or Fahrenheit user-selectable

K-TYPE(0.1°C) -200°C to 1372°C, -328°F
to 1999°F

5

Accuracy Accuracy is specified for operating

temperatures over the range of 18°C
to 28°C (64°F to 82°F), for 1 year, not
including thermocouple error.

±(0.1%rdg+1°C) on -60°C to 1372°C
±(0.1%rdg+2°C) on -60°C to -200°C
±(0.1%rdg+2°F) on -76°F to 1999°F
±(0.1%rdg+4°F) on -76°F to -328°F

Environmental

Ambient
Operating
Ranges

Storage
Temperature

0°C to 50°C (32°F to 122°F) <80% R.H.

-20°C to 60°C (-4°F to 140°F) <80% R.H.

with battery removed from meter.

General

Low battery
Indication

Measurement
rate

Accuracy Stated accuracy at 23°C±5°C, <75% R.H.

Battery 1.5V x 4pcs AAA size

Battery Life 200 hours typical with carbon zinc

Dimensions 160mm(H) x 83mm(W) x 38mm(D);

Weight Approx. 240g (0.5lb) including batteries.

The “ ” is displayed when the battery
voltage drops below the operating level.

2.5 times/second.

battery.

6.3 in (H) x 3.3 in (W) x 1.5 in (D).

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 - EMC: Conforms to EN61326-1.

This product complies with requirements of the

following European Community Directives: 89/ 336/
EEC (Electromagnetic Compatibility) and 73/ 23/ EEC
(Low Voltage) as amended by 93/ 68/ EEC (CE Marking).

However, electrical noise or intense electromagnetic
fields in the vicinity of the equipment may disturb the
measurement circuit. Measuring instruments will also
respond to unwanted signals that may be present within
the measurement circuit. Users should exercise care and
take appropriate precautions to avoid misleading results
when making measurements in the presence of electronic
interference.

MAINTENANCE AND REPAIR

WARNING

To avoid possible electrical shock, disconnect the
thermocouple connectors from the thermometer
before removing the cover.

Installing and Replacing Battery

A. Screw
B. Battery Cover
C. Battery

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1. Power is supplied by 4pcs 1.5V (SIZE AAA) UM-4

R03.

2. The “

3. Remove the batteries from the battery

4. When not use for long time, remove the battery.

5. Do not store the unit in place with temperature

” appears on the LCD display when
replacement is needed. To replace battery remove
screw from back of meter and lift off the battery
cover.

compartment and replace them with new ones.

and humidity beyond the recommended storage
temperature.

Cleaning

Periodically wipe the case with a damp cloth and
detergent, do not use abrasives or solvents.

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