KERN TEE 150-1 Скачать руководство пользователя страница 3

TEE-SH-e-0810 

                                   

        

3  

 

 

1  Features 

 

 Full 

Tare 

  Display segment test function 

  Negative value indication 

 Stable 

indicator 

  Low battery indicator 

 Auto 

zero 

 Auto 

off 

function 

 Overload 

protection 

  Two types of Digital Auto Calibration 

  Solder pads to prevent end-user internal calibration 

  Operated by 2 x AA alkaline batteries 

 

 

2  Calibration Procedure (CAL) 

 

1.   Turn scale on and allow the unit to acclimatize and stabilize for 1 minute. 
2.   Press and hold the [Light/Cal] key for approx. 3 seconds. Display will show [CAL] 

 

and then the required calibration weight. 

 

3.   Gently place the correct calibration weight on the center on the weighing pan.

 

4.   Wait until display shows [   F] then turn off.

 

 

In case [   E] is displayed instead of [   F], this indicates a calibration 
procedure error, unstable or wrong calibration weight applied for calibration.  
Turn the scale off and on again and repeat the procedure. 
 

 

3  Internal Calibration Procedure 

 

1.   Remove two screws of the rear housing and open it.

 

 

2.   Connect 

J1

 on the main board by soldering the pads together.

 

 

3.   Place scale on a hard level surface. Turn scale on.  

 

Display shall show the internal counts. 

 

4.   The internal counts shall fall in the range from 

3 000 

to

 5 000

. In case out of this 

 

range, connect 

J8

 left side or right side to increase or reduce the reading.   

Connecting or disconnecting pads on 

J5

J6

 or 

J7

 can fine tune the reading. 

 

5.   Press [On/Zero/Off] key once. Display will show [CAL] and then the required calibration 

 

weight. Place the corresponding calibration weight on the center of the weighing pan 
and wait until display shows [   F] and then turn off. 

 

6.   Disconnect 

J1

. Calibration completed.

 

 

7.   Turn scale on and check the accuracy at different weight.

 

 

8.   Install rear housing of the scale.

 

 

In case [CAL E] is display instead of [CAL F], this indicates a calibration procedure error 
or wrong weight applied for calibration.  
Turn the scale off and then on and repeat the procedure. 

Содержание TEE 150-1

Страница 1: ...Ziegelei 1 D 72336 Balingen E Mail info kern sohn com Tel 49 0 7433 9933 0 Fax 49 0 7433 9933 149 Internet www kern sohn com GB Service Manual Electronic Pocket Balance Page 2 KERN TEE Version 1 0 4 2008 TEE SH e 0810 ...

Страница 2: ... Contents 1 Features 3 2 Calibration Procedure CAL 3 3 Internal Calibration Procedure 3 4 Functional Block Diagram Description 4 4 1 Functional Block Diagram 4 4 2 Function Description 5 5 Trouble Shooting 6 6 To Replace PCB 7 7 To Replace Load Cell Assembly 7 8 Schematics 8 9 Components Layout 9 ...

Страница 3: ...and repeat the procedure 3 Internal Calibration Procedure 1 Remove two screws of the rear housing and open it 2 Connect J1 on the main board by soldering the pads together 3 Place scale on a hard level surface Turn scale on Display shall show the internal counts 4 The internal counts shall fall in the range from 3 000 to 5 000 In case out of this range connect J8 left side or right side to increas...

Страница 4: ...agram Description 4 1 Functional Block Diagram 4 TEE SH e 0810 digital signal analog signal Microprocessor Power control Regulator Low battery detector Keyboard A D Converter Battery 2 x AAA Load cell Sensor Amplifier L C D ...

Страница 5: ...tion of the analog to digital converter is using a SIGMA DELTA technique and under the control of the microprocessor 4 Microprocessor The microprocessor control all the functions of the scale such as auto zero A D conversion timings weight calculation display overload indication low battery indication tare etc 5 Display This is the part where the weight is shown out on the LCD display in digital f...

Страница 6: ...der LCD Display Zero If display LO check battery 2 5V If display E check internal count Proper readout If unstable reading check load cell and environmental conditions Correct reading If not accurate perform internal calibration If cannot reach full capacity check load cell and internal zero point If always zero check internal zero point Internal calibration if necessary Normal operation ...

Страница 7: ...eck other functions such as Tare Backlight and Auto Off 7 To Replace Load Cell Assembly 1 Disassemble rear housing of scale 2 Disassemble screws fixing the load cell 3 Disconnect wires to PCB Replace the load cell with a new one Assemble screws fixing the load cell Connect wires to PCB 4 Perform internal calibration as described in section 3 5 Assemble rear housing of scale 6 Check accuracy of sca...

Страница 8: ...8 Schematics TEE 150 1 8 TEE SH e 0810 ...

Страница 9: ...9 Components Layout TEE SH e 0810 9 ...

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