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HUMIDITY TEMPERATURE METER 

 
 

 

3

 

Button Location: 

1

 Dust mask 

2

 Sensor probe 

3

  T2 channel, “K” type thermocouple 

probe input 

4

 LCD display 

5

 ON/OFF button 

6

 REL button  

7

 °C control button 

8

  MAX MIN function control button 

9

 HOLD button  

10

 °F control button 

11

  K type offset calibration screw 

12

  Digital output connector (RS-232) 

13

 AC power adapter connector 

14

 Tripod connector   

15

 Battery cabinet cover 

   

V. Operation Instructions: 

 

4.1 Power-Up 

Press the power button to turn the Humidity Temperature Meter ON or OFF. 

4.2 Humidity and Temperature Measurement 

For measurement, place the sensor probe in the tested environment. 

4.3 Connection the Thermocouples ( T2 channel ) 

For measurement, plug the thermocouple probe into the input connector. 

4.4 Selecting the Temperature Scale 

When the meter was first power on, the default scale setting is set at Celsius (°C) scale. The user 
may change it to Fahrenheit (°F) by pressing “ 

°F

 ” button and vice versa to Celsius by pressing 

“ 

°C

 ” button. 

4.5 Data-Hold Operation 

The user may hold the present reading and keep it on the display by pressing the “

HOLD

” button. 

When the held data is no longer needed, one may release the data-hold operation by pressing 

HOLD

” button again. 

When the meter is under Data Hold operation, the

 "MAX MIN" 

and “ 

°C 

“ “ 

°F 

” “ 

U

REL

 ”

 

button are 

disabled. (when you press “ 

°C 

“ “ 

°F 

” “ 

U

REL

 ”

 

and

 "MAX MIN" 

button in HOLD mode, there will 

be two continuous beeps) 

4.6 MAX/MIN Operation: 

When one press the "MAX MIN" button the meter will enter the MAX/MIN mode. Under this mode 
the maximum value, minimum value is kept in the memory simultaneously and updated with every 
new data. 
When the MAX symbol is display, the Maximum is shown on the display. 
Press "MAX MIN" again, then the MIN symbol is on the display and also the minimum reading. 

R

S

-2

3

2

D

C

9

V

C

A

L

11

MANUAL  FOR  SAFE

OPEN

NEDA  1604  6F22  00

PLEASE  READ 

9V  BATTERY

POWER-UP  OPTIONS

C

4 F

HUMIDITY:

)

(

200

F

328

0

TEMP:

20 C

C

F

140

1370
2498

%RH

100

C
F

C

60

F

REL

HOLD

8

9

3

4

5

6

7

1

T1

K-TYPE

T2

(

)

2

TECPEL

Summary of Contents for DTM-322

Page 1: ...REL HOLD C F T1 K TYPE T2 POWER UP OPTIONS C F 0 TEMP 20 C HUMIDITY 328 200 4 F 60 C 2498 1370 RH 140 F 100 F C DTM 322 TECPEL ...

Page 2: ...311 01 JUL 2000 TECPEL ...

Page 3: ... Instructions 3 4 1 Power Up 3 4 2 Humidity and Temperature Measurement 3 4 3 Connection the Thermocouples T2 channel 3 4 4 Selecting the Temperature Scale 3 4 5 Data Hold Operation 3 4 6 MAX MIN Operation 4 4 7 Relative Operation 4 4 8 Auto Power Off 4 4 9 Low Battery Condition 4 4 10 Digital Output 4 VI Calibration Procedure 5 TECPEL ...

Page 4: ...r sensor and K type thermocouple This operations manual contains general product information and specification III Specifications Numerical Display 4 digital Liquid Crystal Display Measurement Range Humidity 0 100 RH Temperature T1 20 60 4 140 T2 200 1370 328 2498 Resolution Humidity 0 1 RH Temperature T1 0 1 0 1 T2 200 200 0 1 200 1370 1 200 200 0 1 else 1 Accuracy Humidity 2 5 RH at 25 Temperatu...

Page 5: ...on Meter 186 L 64 W 30 H mm 10 8 L 2 5 W 1 2 H inch Probe 190 L 15 D mm 7 5 L 0 6 D inch Accessories Instruction Manual 9V Battery Carrying Case Probe Holder K type bead thermocouple probe IV Symbol Definition and Button Location Centigrade and Fahrenheit indication RH Relative Humidity indication MAX The Maximum value is now being displayed MIN The Minimum value is now being displayed This indica...

Page 6: ... Fahrenheit F by pressing F button and vice versa to Celsius by pressing C button 4 5 Data Hold Operation The user may hold the present reading and keep it on the display by pressing the HOLD button When the held data is no longer needed one may release the data hold operation by pressing HOLD button again When the meter is under Data Hold operation the MAX MIN and C F UREL button are disabled whe...

Page 7: ...y default when the meter is powered on it is under auto power off mode The meter will power itself off after 30 minutes if no key operation and no RS232 communication Combination at power on can disable auto power off One may press and hold HOLD button and then power on the meter and there will be two successive beeps to indicate that auto power off is disabled and the will not show up 4 9 Low Bat...

Page 8: ...he user perform the humidity calibration the environment should be kept at the stable condition i e Constant temperature and constant humidity in the lab to in increase the accuracy 2 After the probe insert into the standard humidity cavity the operator should wait at least 20 minutes to let the condition in the cavity to stabilize 3 During the calibration if the user press POWER button at any tim...

Page 9: ... mode Remarks 1 After the probe is in the calibration cavity wait at least 20 minutes to stabilize the system 2 During the calibration the user can leave the process by pressing the POWER button at any time and the calibration data will be kept unchanged 3 During the calibration mode the user can restore the factory default value by press the HOLD and C buttons at the same time 4 Because it take s...

Page 10: ...www tecpel com tw www tecpel com TEL 886 2 2218 3111 FAX 886 2 2218 3222 Email sales tecpel com tecpelco gmail com TECPEL ...

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