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Infrared Thermometers with Advanced Capabilities.


The DHS DHS Department of Homeland Security (USA)
DHS Department of Human Services
DHS Department of Health Services
DHS Demographic and Health Surveys
DHS Dirhams (Morocco national currency) 
 250 Heat Spy[R] series, from Wahl Instruments, Inc., brings a new level of professional performance to handheld noncontact temperature measurement. These thermometers offer an expanded measurement range, including surface temperatures up to 900[degrees]C (1,652[degrees]F) while still maintaining reading accuracy within one percent over a spectral spectral /spec·tral/ (spek´tral) pertaining to a spectrum; performed by means of a spectrum.

spec·tral
adj.
Of, relating to, or produced by a spectrum.
 range of 8 to 14 micrometers ([micro]m). The design provides a rugged, ergonomically pleasing instrument that is easy and comfortable to use. Laser sighting is included on all series models to improve target location and overall accuracy.

This line of instruments consists of three models--DHS 250, DHS 250M, and DHS 250MS--all of which feature a dual back-lit LCD for current, hold, max, min, average, and differential temperature readings. All models also feature adjustable emissivity Emissivity

The ratio of the radiation intensity of a nonblack body to the radiation intensity of a blackbody. This ratio, which is usually designated by the Greek letter ε, is always less than or just equal to one.
, settable audible high alarm, [degrees]F or [degrees]C scale selection, tripod mount and trigger lock A trigger lock is a device designed to prevent a firearm from being discharged while the device is in place. Generally, two pieces come together from either side behind the trigger and are locked in place, unlockable with a key or combination.  for time-lapse readings, a 50:1 target-size-to-distance ratio (nominal), foam-lined molded case, and a one-year warranty. Each has a built-in RS232, 9,600-baud interface port for online data acquisition and is powered by one 9-volt battery. Windows-compatible Wahl software and a computer interface cable are available as an option for the DHS 250 and DHS 250M models.

Model DHS 250M has a clock function, settable audible low alarm, 1-millivolt [degrees]F or [degrees]C analog output (cable optional), and internal data storage of up to 250 values (with adjustable intervals). All DHS 250 and DHS 250M features are incorporated, as well as the Windows-compatible software and the cable required for computer interface.

The Wahl DHS 250 series Heat Spies are ideally suited for measuring surface temperatures of steam traps a self-acting device by means of which water that accumulates in a pipe or vessel containing steam will be discharged without permitting steam to escape.

See also: Steam
, asphalt asphalt (ăs`fôlt, –fălt), brownish-black substance used commonly in road making, roofing, and waterproofing. Chemically, it is a natural mixture of hydrocarbons. , plastics, paper, ceramics, chemicals, pipes, vents, motor bearings, textiles, circuit panels, mold platens, and many other objects.
COPYRIGHT 2001 National Environmental Health Association
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2001, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Publication:Journal of Environmental Health
Article Type:Brief Article
Geographic Code:1USA
Date:Apr 1, 2001
Words:291
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