INFICON BCG450 ATM to Ultra-High Vacuum Triple Gauge - Manual (Page 46)

46
tina40e1-b (2011-04)
Two 5 byte long command strings have to be sent to the gauge in succes-
sion (general RS232 information → 33):
String No. 1 (Unlock atmosphere sensor adjustment):
Byte No. Function Value Comment
0 Length of data string 0x03 hex set value
1 Data 0x10 hex
2 Data 0x1C hex
3 Data 0x00 hex
4 Check sum
(of bytes No. 1 … 3)
0x2C hex low byte of sum, high
byte is ignored
String No. 2 (execute sensor adjustment):
Byte No. Function Value Comment
0 Length of data string 0x03 hex set value
1 Data 0x40 hex
2 Data 0x20 hex
3 Data 0x01 hex
4 Check sum
(of bytes No. 1 … 3)
0x61 hex low byte of sum, high
byte is ignored
After the conclusion of this procedure, the separate atmospheric pressor
sensor is calibrated to match the Capacitance Diaphragm sensor.