HT30 V3.0 08/07

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Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in

parts and workmanship for one year from date of shipment (a six month limited warranty

applies to sensors and cables). If it should become necessary to return the instrument for

service during or beyond the warranty period, contact the Customer Service Department at

(781) 890-7440 ext. 210 for authorization or visit our website www.extech.com for contact

information. A Return Authorization (RA) number must be issued before any product is

returned to Extech. The sender is responsible for shipping charges, freight, insurance and

proper packaging to prevent damage in transit. This warranty does not apply to defects

resulting from action of the user such as misuse, improper wiring, operation outside of

specification, improper maintenance or repair, or unauthorized modification. Extech

specifically disclaims any implied warranties or merchantability or fitness for a specific

purpose and will not be liable for any direct, indirect, incidental or consequential damages.

Extech's total liability is limited to repair or replacement of the product. The warranty set

forth above is inclusive and no other warranty, whether written or oral, is expressed or

implied.

Introduction

Congratulations on your purchase of Heat Stress WBGT (Wet Bulb Globe Temperature)

Meter. This meter measures and displays Heat Stress Index (WBGT), which is how hot it

feels when humidity is combined with temperature, air movement, and direct or radiant

sunlight. Black Globe Temperature (TG) monitors the effects of direct solar radiation on an

exposed surface. It also measures air temperature (TA) and Relative Humidity (RH).

Additional features include: selectable units of °F/°C, Auto power off with override, and a

built-in RS-232 interface with optional 407752 Windows® software. This meter is shipped

fully tested and calibrated and, with proper use, will provide years of reliable service.