HD200-en-GB_V2.3 4/15
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Introduction
Congratulations on your purchase of the Extech HD200 Differential Thermometer Datalogger. The
HD200 supports differential temperature measurements using dual Type K thermocouple probe
inputs and provides selectable units of °C, °F or °K. The large backlit LCD displays a versatile
combination of readings: T1, T2, T3, T1-T2, T1-T3, T2-T3, plus MAX-MIN-AVG readings.
The electronic offset feature permits compensation adjustment for thermocouple errors and to
maximize overall accuracy.
The HD200 can also make non-contact temperature measurements with the supplied IR
thermometer probe.
The HD200 datalogger can store 18,000 measurement readings (for each channel) in the meter’s
internal memory. Stored readings can later be transferred to a PC using the supplied PC USB
interface kit. Real-time meter-to-PC logging is also supported.
This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable
service.
Safety
Please read the safety and operational instructions before using this device.
WARNING
To avoid electrical shock or instrument damage, do not apply voltage exceeding the maximums
specified.
WARNING
To avoid damage or burns, do not make temperature measurement in microwave ovens.
WARNING
Do not use the meter in any explosive atmosphere.
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.
Double insulation
IR Safety Notes
Remove the battery if meter is to be stored for longer than 60 days.
Use extreme caution when the laser pointer beam is on
Do not point the beam toward anyone's eye or allow the beam to strike the eye from a
reflective surface
Do not use the laser near explosive gases or in other potentially
explosive areas
