Thermosense HT-625 Instruction Manual
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HT-625 INSTRUCTION MANUAL
Humidity & Temperature Meter &
Wet Bulb Temperature
Dew Point Temperature
HOLD
+
HOLD
%RH
CEM
DT-625
TEMP.
MAX
MIN
REL MAX MIN
BAT
TABLE OF CONTENTS
TITLE
1. INTRODUCTION
2. FEATURES
3. SPECIFICATIONS
4. PANEL DESCRIPTION
5. HUMIDITY AND AIR TEMPERATURE
MEASUREMENTS
6. BATTERY REPLACEMENT
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1. INTRODUCTION
The HT-625 Thermo-hygrometer has been designed to
combine the functions of a Humidity Meter, Temperature Meter,
Wet Bulb Temperature and Dew Point Temperature Meter.
The Meter is simple to operate and is commonly used in a
variety of applications which include laboratory, industrial,
engineering and professional use.
The Humidity & Temperature Meter uses a humidity &
temperature semiconductor sensor. This operation manual
contains general information and specification.
2. FEATURES
Fast Response Time %RH: 10S (90% at 25℃ still air)
High Accuracy
Dew Point Temperature (-30℃~100℃/-22°F~199°F)
Wet Bulb Temperature ( 0℃~80℃/32°F~176°F)
Resolution 0.1%RH, 0. 1℃/0. 1°F
Max Hold and Data Hold Function
Micro Processor-based Design
Dual Display Temperature & Humidity
Shutdown time digitally adjustable from 1 to 120
Backlight
3. SPECIFICATIONS
Display: Large 4-1/2 dual digital LCD display with backlight
Sensor Type: A single chip relative humidity and temperature
multi sensor module comprising a calibrated
digital output.
Response Time: %RH:10S (90% at +25℃ still air)
Accuracy Note: Accuracy is specified for the following ambient
temperature range: 64 to 82°F (18 to 28°C)
Sampling Rate: 2.5 samples per second
Polarity: Automatic, (-) negative polarity indication.
Over-range: “OL” mark indication.
Low Battery Indication: The “ ” is displayed when the
battery voltage drops below the
opera-ting level.
Operating Conditions: 32 to 104oF (0 to 40oC); < 80% RH
non-condensing
Storage Conditions: 14 to 140oF (-10 to 60oC); <80% RH non-
condensing
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