Omega Engineering HH505 - Manual (Page 13)

1
HH 504 / HH 505 CALIBRATION PROCEDURE
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. Turn off the meter then set the adjusted jumper to J1.
2. Insert the 383.00Ω calibrator to the T1 then turn on the meter, the main
display reading reads 1830.0 then press " ENTER " key.
3. The second display is stabilized (about 5sec.), then press " ENTER " key
when the meter auto power off then set the jumper back to J3 position.
4. Turn on the meter then Insert the 100.00Ω calibrator. The display reading
reads 0°C if the calibration procedure is right.
℃ Pt385 Pt3926
-200℃ 18.521Ω 16.996Ω
-100℃ 60.256Ω 59.479Ω
0℃ 100.000Ω 100.000Ω
100℃ 138.505Ω 139.272Ω
200℃ 175.856Ω 177.362Ω
300℃ 212.052Ω 214.275Ω
400℃ 247.092Ω 250.018Ω
500℃ 280.977Ω 284.591Ω
600℃ 313.708Ω 317.994Ω
700℃ 345.280Ω ―
800℃ 375.700Ω ―
383.00
W CALIBRATOR
+ RW1
RW1=RW2=RW3
RW=WIRERESISTANCE
G
+
_
_
RW2
383.00
W
G RW3