Introduction; Specifications - Extech Instruments EA25 User Manual

Introduction

Congratulations on your purchase of the Extech EA25 EasyView Digital Hygro-Thermometer
Datalogger. This device measures and records Humidity, Temperature, Dew Point, and Wet Bulb
data in real-time. Careful use of this meter will provide years of reliable service.

Specifications

Function
Humidity
Temperature*
Display
Sensor Type
Response Time
Reading Rate
RS-232 PC Interface
Datalogger storage
Sampling Intervals
Operating Conditions
Storage Conditions
Power Supply
Auto power off
Battery Life
Dimensions / Weight
Range and Resolution
10.0 to 95.0% RH
o
-4 to 140 F (-20 to 60
Multifunction LCD with bargraph and status indicators
Humidity: capacitance sensor; Temperature: thermistor
Humidity: 45% to 95% < 1 min; 95% to 45% < 3 min.
Temperature: Approx. 2 seconds for a 10
2 readings per second
Optical connection with supplied interface cable. Software compatible
with Windows
Stores 99 sets of data in manual mode (15,000 in auto mode)
3 to 255 seconds (1 to 86,400 sec. using supplied software)
o
32 to 140 F (0 to 60
o
14 to 140 F (-10 to 60
6 x 1.5V 'AAA' batteries
After 30 minutes of inactivity
Approx. 200 hours
5.9 x 2.8 x 1.4" (150 x 72 x 35mm); 8.3 oz. (235g)
Accuracy
±3% RH (at 25
±5% RH (at 25
o o o
C) ±1.8 F (±1 C)
TM
XP, Vista and Windows 7 systems
o
C); < 95% RH non-condensing
o
C); <70% RH non-condensing
2
o
C, 30 to 95% RH )
o
C, 10 to 30% RH )
o
C change
EA25 v3.1 8/13