Universal Enterprise DTH51 User Manual

QUICK ACCESS TO THE

INFORMATION YOU NEED

DTH51

IR T h e r m o m e t e r / P s y c h r o m e t e r

Infrared temperature
measurement with adjustable

emissivity (Spot ratio 8:1)

Wet Bulb - continuously updated

Dew Point - continuously updated

Differential dew-point function

Built-in ambient-air
temperature sensor

Fast responding humidity sensor

Retractable sensor cap

DTH51 • IR Thermometer/Psychrometer

Copyright © 2006 UEi Automotive Specifications are subject to change without notice. L655 AUTO 4/06

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The DTH51 gives you quick access to the information you
need when installing or maintaining heating and cooling
systems. Manufacturers of some of the newer “high-efficiency”
cooling systems require you to charge them based on wet bulb
and dry bulb specifications. The DTH51 offers you the fastest
method to date of taking these measurements. It combines the
speed and convenience of an infrared thermometer with the
accuracy and reliability of a digital psychrometer and ambient
temperature meter in one product.

The DTH51 is battery operated and measures Humidity, Dew
Point, Wet Bulb, Air Temperature (Dry Bulb), Surface
Temperature and the difference between the Dew Points of
an IR measured surface and the ambient air. Its sensors are
retractable to protect them when they are not in use.

The DTH51
has the following features:

• Triple LCD digital display

• Infrared temperature measurement with adjustable emissivity

(Spot ratio 8:1)

• Built-in ambient-air temperature sensor

• Fast responding humidity sensor

• Wet Bulb - continuously updated

• Dew Point - continuously updated

• Differential dew-point function

(surface temperature to dew-point differential)

• Backlit display

• Low battery indication

• Accurate and reliable microprocessor circuitry

• Auto power off with adjustable power-off timer

• Environmentally protected (retractable) sensor-set

• One year limited warranty

Retracted sensor
(push in to extend)

Extended
sensor

Ambient temperature range -4˚ to 122˚F (-20˚ to +50˚C)
RH% range 0 ~ 100% RH
Wet bulb range -6.9˚ to 122˚F (-21.6 to 49.9˚C)
Dew point range -90.4˚ to 122˚F (-68˚ to 49.9˚C)
IR temperature range -40˚ to 932˚F (-40˚ to 500˚C)
IR distance to spot ratio 8:1

Accuracy

RH% ±3% at 10 ~ 90%, others ±5%
Air temperature ±1˚F (0.6˚C)
IR temperature ±2% or ±2˚C (-20˚ to 450˚C)

(whichever is greater - others ±3% or 3˚C)
Response time 0.5 sec (IR sensing)
Size 175 (H) mm x 50 (D) mm x 70 (W) mm
Power 4 x 1.5V (AAA) battery

Specifications

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RECYCLE