CM4 Four-Point Continuous Monitor
CM4 Technical Manual
E-9
bits 2-3: CSI for point 2
bits 4-5: CSI for point 3
bits 6-7: CSI for point 4
The CSI expresses the concentration relative to the alarm levels
according to the following enumeration:
0
0.0 == concentration
1
0.0 < concentration < AL1
2
AL1 <= concentration < AL2
3
AL2 <= concentration
Chemcassette windows remaining - 2 bytes
Chemcassette days remaining - 2 bytes
Internal Filter 2 bytes (days in use)
External Filter - 2 bytes (days in use)
Flow Rate Point 1 - 2 bytes (cc/Min)
Flow Rate Point 2 - 2 bytes
Flow Rate Point 3 - 2 bytes
Flow Rate Point 4 - 2 bytes
Optics Cal Status - 1 byte
bit 0: Optics have been calibrated
0 = Not Tested
1 = Tested
bits 1-4: Optics test results
0x01 = Passed optics 1
0x02 = Passed optics 2
0x04 = Passed optics 3
0x08 = Passed optics 4
bits 5-7: Undefined
Maintenance Status
0x01 = low flow point 1
0x02 = low flow point 2
0x04 = low flow point 3
0x08 = low flow point 4
0x10 = low Chemcassette tape
0x20 = Maint. Relay
0x40 = Instr. Fault Relay
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