Extech Instruments 421509 User Manual

421509-en-GB_v2.6 8/16
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Introduction
Congratulations on your purchase of Extech’s Dual Input, 3-Display, Hand-Held Digital
Thermometer/Datalogger. This portable digital thermometer is designed to use external K / J / T / E /
R / S / N type thermocouples (K-type supplied). Temperature indication follows Reference
Temperature/Voltage Tables (N.I.S.T. Monograph 175 Revised to ITS-90). It features an adjustable
T/C offset and an RS-232 interface for uploading data to a PC using the supplied software and
cable. This professional meter, with proper care, will provide years of safe reliable service.
Safety Information
Please read the safety and operational instructions before using this device.
WARNING
To avoid electrical shock, do not use this instrument when working near voltages over 24V AC/DC.
WARNING
To avoid damage or burns, do not make temperature measurement in microwave ovens.
CAUTION
Repeated flexing can break the thermocouple leads. To prolong lead life, avoid sharp bends in the
leads, especially near the connector.
This symbol on the instrument indicates that the operator must refer to an explanation in this
manual.
Meter Description
1. Optical RS-232 Interface
2. Thermocouple inputs
3. Mini DIN I/O port
4. Triple LCD Display
5. Keypad Overlay
6. Keypad
7. Protective rubber holster
8. Battery compartment on rear
9. 12VDC Adaptor input
!
ESC -
0 ENTER
123
456
789
DISPLAY
¡C/¡F
[Limits]
LOG
READ
TYPE
T1/T2
REL
HOLD
SHIFT
[OFS]
CLR ?
SET[ ]
SAVE
READ
[TIME]
T1-T2
[APO]
MAX/MIN
[INVT]
TYPE
T1/T2
MAIN
SECOND
THIRD
421509
T1
¡F T1-T2
K
APO
¡F T1
1
2
3
4
5
6
7
8
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Extech Instruments 421509 Specifications

General

Brand	Extech Instruments
Model	421509
Category	Measuring Instruments
Language	English