GX-A/GF-A Maintenance manual
Page 6
3. Performance Test
The following test procedures determine whether the balance (GX-A/GF-A series) works
properly.
The internal temperature of the balance must be approached to the room (the air)
temperature enough, allow half an hour warm-up prior to conducting the performance test.
3.1 Performance Test Procedure
Verify the following points:
External view
1.Adjust the leveling feet to level the balance. Confirm it using the bubble spirit level.
2.The weighing pan should be level. (Check for the correct pan assembly.)
3.Use the breeze break for 0.001g model in GX-A/GF-A series
.
Functions
1.Verify that each key functions correctly:
ON/OFF key
CAL key
MODE key
SAMPLE key
PRINT key
RE-ZERO key
2.Verify the following items and operations:
The minus indicator
The decimal point indicator
A stable weighing data can be obtained
The RS-232C communication function
Selection of the weighing units
Identifies each of three TLs.
e.g. when "264.555 TL" is displayed,
k =g display / TL display = 10000.0 / 264.555 = 37.799
3.Verify that the TAEL values are within tolerance:
Weight
Tolerance
Hong Kong (jewelry)
TN
1 TAEL = 37.4290 g
37.428-37.430 g
Hong Kong (general)
Singapore
TG
1 TAEL = 37.7994 g
37.798-37.800 g
Taiwan
TT
1 TAEL = 37.5000 g
37.499-37.501 g
