Amprobe TMD90A Manuel utilisateur
TMD90A
Dual Input Digital
Thermometer
User Manual
• Mode d’emploi
• Bedienungshandbuch
• Manuale d’Uso
• Manual de uso
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TMD90A
Dual Input Digital Thermometer
User Manual
•Mode d’emploi
•Bedienungshandbuch
•Manuale d’Uso
•Manuel de uso
PN 2099366
March 2007
©2007 Amprobe Test Tools.
All rights reserved. Printed in China
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TMD90A_all.pdf 2 3/23/2007 3:22:49 PM
TMD90A
Dual Input Digital Thermometer
User Manual
English
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1
TMD90A Dual Input Thermometer
Contents
Safety Information 2
Symbols Used in this Manual 2
Introduction 3
Display and Controls 4
Functions 5
Auto Power Off (Sleep Mode) 5
Change Thermocouple Type 5
Using the Pushbuttons 6
RS-232 Output 7
Troubleshooting 8
Replacing the Battery 9
9 V ac Adapter 9
Repair 10
Limited Warranty and Limitation of Liability 11
Thermocouple Definitions 11
Specifications 12
Additional Specifications 12
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2
Safety Information
•Place ONLY thermocouples in the thermocouple input.
•Make sure your meter is configured for the thermocouple type to
be used.
•Be sure the thermocouple you use can withstand the temperature
extreme it will be exposed to.
•Properly maintain the meter and calibrate it regularly
•Use the thermometer only as specified in this manual, or the
protection provided by the thermometer might be impaired.
•Replace the battery as soon as BAT appears to avoid false readings
that can lead to electric shock and injury.
XWWarning
Supplied thermocouple is not intended for contact
with liquids or live electrical circuits.
Symbols Used in this Manual
X Dangerous Voltage WRefer to the manual
TDouble insulated JEarth Ground
P Complies with EU
directives
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3
Introduction
The Model TMD90A dual input thermometer accepts Type K, J, T, R, S,
and E thermocouples. With a triple display screen to view measurement
results and relative time clock. Optional RS-232 software and cable
allows collection of real time data to a PC for further analysis or
reports.
TMD90A displays all LCD (liquid crystal display) segments for
approximately 3 seconds when it is first turned on and then provides
information on any connected thermocouples. Numerous viewing
combinations are available. The LCD is divided into three distinct
sections; one large (Primary) top screen and two smaller bottom
screens (Secondary and Relative Clock).
The three display areas are continually updated with the temperature
measurements and relative time information. There are several options
regarding how and what information is presented on the LCD.
•Temperature readings are easily toggled between Fahrenheit and
Celsius.
•A backlight illuminates the LCD for viewing in low light areas.
•The Abutton will freeze the upper display data while allowing
the lower displays to continue updating Information.
•A low battery indicator is also displayed as appropriate.
•The meter defaults to the last mode selected when turned off.
Note: If no thermocouples are connected, four dashes(----) appear in
the temperature display.
Box Contents
TMD90A Thermometer 1
Type K thermocouple probe 2
Users Manual 1
Hard plastic carry case 1
9 V battery 1
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4
Display and Controls
10 (T2)
10 (T1)
5
4
32
6
7
1
8
9
11
6
12
13
A REC Relative clock is active for recording min and max
temperature occurences or for time stamp purposes.
B MAX/MIN Maximum or minimum temperature
measurements are being monitored.
C HOLD/REL Freezes primary display or establishes a relative
zero for the primary display information.
D BAT Low battery indicator.
E °C °F Displays temperature in either degrees Celsius or
degrees Fahrenheit.
F T1-T2 Toggles screen information from T1 (Primary)/ T 2
(Secondary) to T2 (Primary) / T1 (Secondary) ,then to T 1-T 2
(Differential) on Primary and alternating T1/T2 temperatures
on Secondary display.
G Primary data display. Displays T1, T2, or T1-T2( temperature
differential -TD ) or a relative zero of T1, T2, or TD.
H KJTRSE Selects proper input reference for thermocouple in
use. T1 and T2 must be the same thermocouple type.
I Secondary data display. Displays T2,T1 or T1 and T2
temperatures.
J Thermocouple input. Positive and negative polarized plugs for
the thermocouple probes used ( Blade type ); T1 on the
left,T2 on the right.
K Relative clock display. Displays time in hours, minutes, and
seconds (HHMMSS) when REC is pressed and the relative
time that MIN or MAX data was recorded.
L RS-232 output port. Optional software and cable – PN
TM-SWA.
M AC to DC converter input.
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5
WCaution
Read all Safety Information before using this
thermometer.
Functions
Auto Power Off (Sleep Mode)
The TMD90A shuts off automatically approximately 20 minutes after
being turned on. For recording or operating over longer periods of time
you can disable the sleep mode by pressing Dand A
simultaneously while powering on. When "n" then appears in the center
of the screen you can release the On button. Auto power off is disabled
when you turn off the meter.
Change Thermocouple Type
Press Eand Dsimultaneously for 2 or more seconds until K
appears. Press the Cbutton the type of probe cycles through K
(the default), J, T, R, S, and E types. The current mode is displayed on
the left side of the LCD. press E, an "S" will appear in the center of
the screen.
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