Amprobe TM45A User Manual [en, de, es, fr]

TM45A

Digital Thermometer

User Manual

•Bedienungshandbuch

•Manual de uso

•Mode d’emploi

TM45A

Digital Thermometer

•Bedienungshandbuch

•Manual de uso

•Mode d’emploi

PN 1566317
All rights reserved. Printed in Taiwan

Digital Thermometer

Contents

Symbols ..............................................................................1

Introduction .......................................................................1

Warnings and Precautions ................................................2

Preparation for Use - Unpacking ......................................2

Measuring Procedure ........................................................2

Specifications .....................................................................3

Maintenance ......................................................................4

Battery Replacement .........................................................5

Repair .................................................................................5

Symbols





Battery

Complies
with EU
directives

Introduction

The TM45A is a portable, 3-1/2 digit, compact-sized digital
thermometer designed for use with an external K-type
thermocouple as temperature sensor. Temperature indication
follows Reference Temperature/Voltage tables N.I.S.T.
Monograph 175 Revised to ITS-90 for K-type thermocouples.
One K-type thermocouple is supplied with the thermometer.



Refer
to the
manual



Earth

Ground

1

Warnings and Precautions

• When measuring surface temperatures, the potential
between the measured surface and earth ground must not
exceed 24V AC or DC. Voltages above 20V are dangerous.

• Inspect the instrument and probe before every use. Do not
use damaged parts.

• Never ground yourself when taking measurements in
electrical circuits. Do not touch exposed circuit elements or
probe tip.

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

• Do not operate instrument in an explosive atmosphere.

Caution: Repeated sharp flexing can break the thermocouple

leads. To prolong lead life, avoid sharp bends in the leads,
especially near the connector.

Preparation for Use - Unpacking

Your shipping carton should include the digital thermometer
with four 1.5V AAA size batteries installed, one 1.2m type K
thermocouple probe, a soft carrying case and this manual. If
any of the items are damaged or missing, return to the place of
purchase for an exchange.

Measuring Procedure

1. Connect the K-type thermocouple probe to the instrument.

2. Turn instrument on by sliding the function switch to the
desired resolution (1° or 0.1°).

3. Push the selector key to select °C or °F (corresponding
symbol appears on display).

4. Apply the probe to the medium that the temperature is to
be measured.

5. Read the measured temperature on the digital display.

DATA HOLD: When measuring in tight locations or dark areas

you can push the DATA HOLD button to “freeze” the reading
on the display.  is displayed. Push the DATA HOLD button
again to resume normal display of current value.

MAX HOLD: Push this button to monitor a temperature over a
longer time period. MAX is displayed. The maximum value is kept
on the display and is updated each time a higher value is measured.
Pressing DATA HOLD while MAX recording is activated interrupts
recording; pressing DATA HOLD again resumes recording. Press
MAX HOLD again to return to normal measuring mode.

2

Specifications

General Specifications

Display: 3-1/2 dgt LCD, 1999 counts with function and unit

indicators.

Zero Adjustment: automatic
Low Battery Indication:  when battery voltage drops below

operating level.

Polarity indication: automatic, “–” indicated; “+” implied
Display Update Rate, Digits: 2.5/sec, nom.
Operating Temp.: 0 to 50°C, <80% Relative Humidity
Storage Temp: -20°C to 60°C, <70% RH, battery removed
Power Supply: four 1.5V AAA size UM-4 R03 batteries
Battery Life (typical): 200 hrs zinc-carbon.
Dimensions (HxWxD): 170 x 44 x 40 mm, (6.7” x 1.73” x 1.57”)
Weight (including batteries): 250 grams (9 oz)
Housing material: ABS
Input connector: accepts standard miniature thermocouple

connectors (flat blades, spaced 7.9mm, center to center)

Accessories: one type K thermocouple bead probe, soft carrying

case, operator’s manual

Specifications of supplied probe:

1.2m (4 foot) type K thermocouple bead probe (teflon tape
insulated).

Maximum insulation temperature 260°C (500°F). Probe

accuracy ±2.2°C or ±0.75% of reading (whichever is greater)
from 0°C to 800°C.

Agency Approvals:
This product complies with requirements of the European

Community Directive: 89/336/EEC (Electromagnetic
Compatibility).

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.

 EMC

3

Electrical Specifications

Measurement range:

°C mode: -50.0°C to 199.9°C; 0.1°
resolution -50°C to 1300°C; 1° resolution
°F mode: -58.0°F to 199.9°F; 0.1°
resolution -50°F to 1999°F; 1° resolution

Resolution, selectable: 0.1° or 1°
Accuracy (specified for operating temperatures over the

range 18°C to 28°C / 64°F to 83°F, for 1 year, not including
thermocouple error)

°C mode:

-50°C to 199.9°C: ±(0.3%rdg +1°C)

-50°C to 1000°C: ±(0.3%rdg +1°C)
1000°C to 1300°C: ±(0.5%rdg +1°C)

°F mode:

-58°F to 199.9°F: ±(0.3%rdg +2°F)

58°F to 1832°F: ±(0.3%rdg +2°F)
1833°F to 1999°F: ±(0.5%rdg +2°F)

Temperature coefficient: 0.1 times the applicable accuracy

specification per °C from 0°C to 18°C and 28°C to 50°C

Overload protection: 24V AC or DC

Maintenance

In case you do not obtain the expected measurement result:

1. Check the batteries.

2. Review the operating instructions for possible mistakes in
operating procedure.

3. Inspect the thermocouple probe for a broken or intermittent
connection.

Except for the replacement of the batteries, repair of the
thermometer should be performed only by the Factory or by a
Factory Authorized Service Center.

The front panel and case can be cleaned with a mild solution
of detergent and water. Apply sparingly with a soft cloth and
allow to dry completely before using.

4

Battery Replacement

For battery replacement, the instrument needs to be turned off,
with probe removed.
It is best to replace the batteries as soon as the

appears in the display.

1. Turn instrument face down and remove the screw. Slide
battery hatch down and lift off.

2. Remove the four 1.5V AAA size batteries and replace with
same.

3. Replace the battery hatch and and secure with screw.

Failure to turn off the instrument before installing the batteries
could result in damage to the instrument and to the batteries if
batteries are connected incorrectly to the thermometer.

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

 Warning

 symbol

 Warning

5

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 next page
for address).

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]
Fax: [phone] Fax: [phone]

Non-Warranty Repairs and Replacement – Europe

European non-warranty units can be replaced by your
Amprobe® Test Tools distributor for a nominal 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.)

TM45A

Digital Thermometer

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