EA25IC贸易商引脚图技术参数全新原装-中国IC网-芯三七

User's Guide

EasyView Digital Hygro-Thermometer Datalogger

Model EA25

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

Range and Resolution Accuracy

10.0 to 95.0% RH

±3% RH (at 25^oC, 30 to 95% RH )

±5% RH (at 25^oC, 10 to 30% RH )

Temperature* -4 to 140^oF (-20 to 60^oC) ±1.8^oF (±1^oC)

* Dew Point and Wet Bulb temperatures have the same range as shown above

Display

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^oC change

2 readings per second

Sensor Type

Response Time

Reading Rate

RS-232 PC Interface

Optical connection with supplied interface cable. Software

compatible with Windows^TM95/98, ME, 2000, and XP systems

Datalogger storage

Sampling Intervals

Operating Conditions

Storage Conditions

Power Supply

Stores 99 sets of data in manual mode (15,000 in auto mode)

3 to 255 seconds (1 to 86,400 secs. using supplied software)

32 to 140^oF (0 to 60^oC); < 95% RH non-condensing

14 to 140^oF (-10 to 60^oC); <70% RH non-condensing

6 x 1.5V ‘AAA’ batteries

Auto power off

After 30 minutes of inactivity

Battery Life

Approx. 200 hours

Dimensions / Weight

5.9 x 2.8 x 1.4” (150 x 72 x 35mm); 8.3 oz. (235g)

Meter Description

1. Humidity/Temperature Probe

2. Multifunction LCD with bargraph

and status indicators

3. Power ON/OFF button

4. MX/MN button

1

5. DATA HOLD button

6. Humidity / Temperature select

button

2

7. SET button

8. Units (C/F) select button

9. MEM (memory) button

10. ENTER button

4

3

5

7

8

11. READ button

6

9

12. DEW POINT temperature select

& left arrow button

13. UP/DOWN programming keys

14. WET BULB temperature select &

right arrow button

15. RS-232 optical jack

16. The battery compartment is

located on the rear of the instrument

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EA25 V2.1 02/06

Operation

Turn Power ON or OFF

1. Press the

button to turn the meter on or off. The meter will perform a short self-test

when turned on.

2. The meter automatically turns off after 30 minutes of inactivity unless the MX/MN or

Datalogging modes are active.

Taking Measurements

1. Hold the probe in the air in the area to be tested. Do NOT immerse in liquid.

2. Allow adequate time for readings to stabilize.

3. Read the measurements on the LCD. The bargraph tracks the large digit display.

4. The %RH/TEMP button allows the user to choose whether the temperature or the

humidity is displayed on the large digit display.

Selecting temperature units of measure (C/F)

Press the ^oC/^oF button momentarily to toggle the temperature units.

Maximum and Minimum recording (MX/MN)

NOTE: The Automatic Power OFF feature will be disabled while in the MX/MN mode.

The MX/MN mode allows the user to view only the highest and lowest readings while

taking measurements. (MX stands for maximum and MN for minimum).

1. Press the MX/MN button momentarily to start the elapsed timer and begin recording.

The display will now show only the highest reading (the MX icon will appear).

2. Press the MX/MN button again to view the lowest reading (MN will appear).

3. The SET button allows the user to view the elapsed time for a particular MX or MN

reading in Minutes:Seconds (59mins:59secs max) or Days:Hours (99days:24hours

max).

4. To check the highest and lowest Dew Point or Wet Bulb temperatures, use the DEW

and the WET buttons.

5. The following data displays are available in the MX/MN mode:

• Maximum and Minimum Humidity with the associated Temperature

• Maximum and Minimum Temperature with the associated Humidity

• Maximum and Minimum Dew Point temperature with the associated Temperature or

Humidity

• Maximum and Minimum Wet Bulb temperature with associated standard temperature

or humidity

6. To exit MX/MN mode, press and hold the MX/MN button (the MX/MN icons disappear).

Data Hold

Press the H button momentarily to freeze the displayed reading. The 'H' icon will appear on

the upper left-hand side of the display. Press the H button again to return to normal

operation (the 'H' hold icon will disappear).

DEW POINT and WET BULB Temperature Display

Dew Point and Wet Bulb temperatures are calculated by the meter based on

humidity/temperature measurements. To view the Dew Point or Wet Bulb temperatures,

press the DEW or WET button momentarily. The ‘DEW’ or ‘WET’ display icon will appear

on the right side of the LCD and the temperature will display on the bottom (larger) digits.

The upper (smaller) digits will display the regular temperature in ^oC or ^oF or the humidity in

RH% (use the %RH/TEMP button to toggle between the two).

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EA25 V2.1 02/06

Manual Datalogging

Clearing Previously Stored Data

1. Press the “

” button to turn the meter off.

2. Press and hold the "MEM" button, then press the “

” button to turn the meter on.

When the LCD indicates "CLr", the entire memory has been erased.

Manual Datalogging

1. Press the "MEM" button to store a reading manually. The LCD will display the "M" icon

and the address number. The total memory size for manual recording is 99 sets.

2. When the datalogger memory is full, the LCD will display "Full".

Recalling manually stored data

1. Press the "READ" button to view stored data. The LCD will show the "R" (recall) icon

and the current address number.

2. Use the " ꢀ" or " ꢁ" button to select another memory address to view.

3. Press the DEW or WET button to display the Dew Point or the Wet Bulb value.

4. Press " ↵ " (enter) to exit this mode.

Automatic Datalogging

NOTE: Before datalogging ensure that previous data has been downloaded otherwise it

will be lost. Up to 15,000 sets of data can be recorded in automatic datalogging mode.

The following settings must be configured before datalogging:

•

Real-Time Clock: Set to the current time in hours, minutes, and seconds

Start Time:

Stop Time:

Interval Time:

Set the time that datalogging will automatically begin

Set the time that datalogging will automatically stop

Set the sampling rate (time between logged readings)

Real-Time Clock Setting

1. Press the button to power the meter.

2. Press and hold the SET button until two beeps

sound (screen shown at right appears). Note

that if the "Ì" logging icon is already on the

LCD before pressing the SET button, the meter

is already datalogging and cannot be

programmed. To stop logging press " ↵ " (enter

button).

3. Press " ꢀ" or " ꢁ" to set the current hour.

4. Press "ꢂ" to move to the two flashing digits representing minutes.

5. Press " ꢀ" or " ꢁ" to set the current minutes.

6. Press "ꢂ" to move to the two flashing digits representing seconds.

7. Press " ꢀ" or " ꢁ" to set the current seconds.

8. Press " ↵ " (enter) to store the time and move to the next screen.

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EA25 V2.1 02/06

Datalogging Start-Time (St) Setting

1. The Datalogging start-time screen displays

"St1" and two flashing digits (for the hour).

2. Press " ꢀ" or " ꢁ" to set the hour of the day

that datalogging will begin.

3. Press "ꢂ" to move to the two flashing digits

representing minutes.

4. Press " ꢀ" or " ꢁ" to set the desired minute

that datalogging will begin.

5. Press "ꢂ" to move to the two flashing digits representing the seconds.

6. Press " ꢀ" or " ꢁ" to set the desired second that datalogging will begin.

7. Press " ↵ " (enter key) to store the datalogging start-time and move to the next screen.

Datalogging Stop-Time (SP) Setting

1. The Datalogging stop-time setting screen shows

"SP1" and the two flashing numbers (for the hour).

2. Press " ꢀ" or " ꢁ" to set to the desired hour of

the day that datalogging will end.

3. Press "ꢂ" to move to the two flashing digits

representing minutes.

4. Press " ꢀ" or " ꢁ" to set the desired minute that

datalogging will end.

5. Press "ꢂ" to move to the two flashing digits representing seconds.

6. Press " ꢀ" or " ꢁ" to set the desired second that datalogging will end.

7. Press " ↵ " (enter key) to store the datalogging stop-time and move to the next screen.

Datalogging Sampling Interval Setting

1. "INTV" (interval) appears along with the current

interval selection (in seconds).

2. Use the " ꢀ" or " ꢁ" buttons to change the

number of seconds (3 to 255). For example, with

003 selected a reading will be automatically recorded every three seconds.

3. Press " ↵ " (enter key) to store the sampling interval rate and begin datalogging.

Datalogging Mode

1. In datalogging mode, the LCD will continue to display the "Ì" (logging icon). The LCD

will also flash the "M" icon each time a reading is logged.

2. Use the " ꢀ" button to display the Start-Time and the " ꢁ" button to display the Stop-

Time.

3. Press "↵" (enter) to stop datalogging and exit the datalogging mode ("Ì" will

disappear).

Note: Readings automatically logged can only be viewed by downloading them to a PC.

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EA25 V2.1 02/06

Datalogging Software

The instructions on how to install the datalogging software are printed on the Software CD

label. The software operating manual can be found on the CD.

Note that the software is compatible with Windows^TM95/98, 2000, ME, and XP operating

systems.

Maintenance

Cleaning and storage

1. The meter should be cleaned with a damp cloth and mild detergent when necessary.

Do not use solvents or abrasives.

2. Store the meter in an area with moderate temperature and humidity (refer to the

operating and storage range in the specifications chart earlier in this manual).

Battery Replacement

When the battery power falls low, the ‘BT’ symbol will appear on the LCD. Replace the six

1.5 ‘AAA’ batteries by removing the rear battery compartment screw and accessing the

battery compartment. Check that the polarity (orientation) is correct when placing the

batteries in the compartment. Ensure that the compartment cover is securely fastened

when finished.

Calibration and Repair Services

Extech offers complete repair and calibration services for all of the products we sell.

For periodic calibration, NIST certification or repair of this Extech product, call customer

service for details on services available. Extech recommends that calibration be performed

on an annual basis to ensure calibration integrity.

Warranty

EXTECH INSTRUMENTS CORPORATION warrants this instrument to be free of defects in parts and

workmanship for one year from date of shipment (a six month limited warranty applies on sensors and

cables). If it should become necessary to return the instrument for service during or beyond the warranty

period, contact the Customer Service Department at (781) 890-7440 ext. 210 for authorization or visit our

website at www.extech.com (click on ‘Contact Extech’ and go to ‘Service Department’ to request an RA

number). A Return Authorization (RA) number must be issued before any product is returned to Extech. The

sender is responsible for shipping charges, freight, insurance and proper packaging to prevent damage in

transit. This warranty does not apply to defects resulting from action of the user such as misuse, improper

wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification.

Extech specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and

will not be liable for any direct, indirect, incidental or consequential damages. Extech's total liability is limited

to repair or replacement of the product. The warranty set forth above is inclusive and no other warranty,

whether written or oral, is expressed or implied.

ꢀ

Support Hotline (781) 890-7440

Tech support: Ext. 200; Email: support@extech.com

Repair/Returns: Ext. 210; Email: repair@extech.com;

Website: www.extech.com

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EA25 V2.1 02/06

型号:	EA25
生命周期：	Obsolete
IHS 制造商：	AMPHENOL FCI ASIA PTE LTD
Reach Compliance Code：	compliant
ECCN代码：	EAR99
HTS代码：	8536.90.40.00
风险等级：	5.69
Is Samacsys：	N
制造商序列号：	EA
终端性别：	FEMALE
端子和端子排类型：	RING TERMINAL
线规：	0 AWG
Base Number Matches：	1

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