Calibration Procedure

HH501(A,B)K / HH501(A,B)J / HH501(A,B)T / HH501(A,B)E

HH508BR/HH508/HH509/HH509R

Note: The following calibration procedure should perform only by qualified technicians who have access to the items as following.

Equipment: The class of calibrator had better 10 times greater than the measured meter.

1.Set the jumper position on J1 position.

2.Input DCV 25.6mV to the T1 after the display is stabilized (forward 4 digits), then press “ ENTER “ key and "01" is displayed.

3.Input DCV 74mV after the display is stabilized, then press “ENTER “ key and "OL" is displayed.

4.Input 0C (K-type) after the display is stabilized, then press “ENTER “ key.

5.Don't push any key and the meter will turn off automatically after 10 seconds.

6.After adjustment set the jumper back to J3 position.

7.Turn on the meter then input 0C (K-type). The display reading reads 0°C if the calibration procedure is right.