Specifications - Extech Instruments 407445 Instruction Manual

Introduction
Congratulations on your purchase of Extech's Heavy Duty Hygro-Thermometer. The Model
407445 displays Temperature & Relative Humidity simultaneously and includes a built-in
PC interface. This professional meter, with proper care, will provide years of safe reliable
service.

Specifications

General Specifications
Display
Measurement
Data Hold
Sensor types
Memory Recall
Power off
Data Output
Sampling Time
Operating
Temperature
Operating Humidity
Power Supply
Power Consumption
Weight
Size
Range Specifications
RH
Temperature 32
Test Equipment Depot, 99 Washington Street, Melrose, MA 02176
Dual function 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 off after approx 10 minutes of inactivity
RS 232 PC serial interface
Approximately 0.8 seconds
Instrument: 32 to 122°F (0 to 50 °C)
Probe: 32 to 140°F (0 to 60°C)
< 90% RH
9V battery
Approx. 8.5 mA DC
0.76 lbs. (345 g) including batteries & probe
Instrument: 7.1 x 2.8 x 1.3" (180 x 72 x 32mm)
Sensor head: 1" diameter x 6.3" (26mm x 160mm)
Range
10% to 95%
RH
ο ο
F to 122 F
ο ο
(0 C to 50 C)
781.665.1400 | 800.517.8431 | Fax: 781.665.0780
Resolution
0.1% RH > 70% RH: ± 4% RH
< 70% RH: ± 3% RH
ο
0.1 F/C ± 1.5
Accuracy
ο ο
F (± 0.8 C)