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Heavy Duty Hygro-Thermometer
•
Displays Temperature & Relative Humidity
simultaneously
•
High precision, capacitance RH probe
•
Record / Recall MAX/MIN/AVG Readings
•
PC Interface and Software
1. INTRODUCTION
Congratulations on your purchase of Extech's Heavy Duty Hygro-Thermometer. This
professional meter, with proper care, will provide years of safe reliable service.
2. SPECIFICATIONS
2.1 General Specifications
Circuit
Display
Measurement
Data Hold function
Sensor Structure
Memory Recall
Power off
Data Output
Sampling Time
Operating
Temperature
Operating Humidity
Power Supply
Power Current
Weight
Size
INSTRUCTION MANUAL
Model 407445
Custom LSI microprocessor circuit
Dual function, 0.5" super large LCD display with
contrast adjustment
Relative Humidity (RH) and Temperature (°C & °F)
Freezes Display
Humidity - thin film, capacitance sensor
Temperature - thermistor
Records/Recalls Max, Min and Average readings
Automatic power down to preserve battery life
RS 232 PC serial interface
Approximately 0.8 seconds
Instrument: 32 to 122F (0 °C to 50 °C)
Probe: 32 °F to 140 °F (0 °C to 60 °C)
< 90% RH
006P DC 9V battery (Heavy duty Alkaline type)
Approx. 8.5 mA DC
0.76 lbs. (345 g) including batteries & probe
Instrument: 7.1 x 2.8 x1.3" (180 x 72 x 32mm)
Sensor Head: Round, 26mm diameter x 160mm
1
407445es
Ver. 1.04
9/99
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Summary of Contents for Extech Instruments 407445
- Page 1 INSTRUCTION MANUAL Model 407445 Heavy Duty Hygro-Thermometer • Displays Temperature & Relative Humidity simultaneously • High precision, capacitance RH probe • Record / Recall MAX/MIN/AVG Readings • PC Interface and Software 1. INTRODUCTION Congratulations on your purchase of Extech’s Heavy Duty Hygro-Thermometer. This professional meter, with proper care, will provide years of safe reliable service.
- Page 2 2.2 Range Specifications Range Resolution Accuracy 10% to 95% RH 0.1% RH >70% RH: +(3% rdg + 1% RH); <70% RH: +3% RH Temperature ο ο ο ο C to 50 +0.8 ο ο ο ο F to 122 +1.5 3.
- Page 3 d) Press "RECALL" once, the "AVG" indicator along with the average value will appear on the LCD display. e) To disable the "Data Record" function, press "Record" again. The display indicators "REC", "Max", "Min", "AVG" will disappear. 4.8 Simplified operational flow diagrams: 5.
- Page 4 10. WARRANTY EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and workmanship for three years from date of shipment (a six month limited warranty applies on sensors and cables).
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