Table of Contents
iv
Dimensions ........................................................................................................ 28
Electrical Information ..................................................................................................... 30
Connectors ......................................................................................................... 30
Chapter Three: Overview ........................................................................................................... 35
General ............................................................................................................................ 35
Sensor ............................................................................................................................. 35
Signal Conditioner/Electronics ....................................................................................... 35
Chapter Four: Operation ............................................................................................................. 36
General ............................................................................................................................ 36
Lowest Suggested Pressure Available for Reading ........................................... 36
Lowest Suggested Pressure to Use for Control ................................................. 36
Type 623H End Cap ....................................................................................................... 37
Hysteresis of Type 623H Trip Relays ............................................................................ 37
How To Set the Trip Points on Type 623H .................................................................... 39
How To Adjust the Trip Point Direction ........................................................................ 40
How To Adjust the Trip Point Hysteresis on Type 623H .............................................. 44
Chapter Five: Maintenance and Troubleshooting ....................................................................... 46
General ............................................................................................................................ 46
Zero Adjustment ............................................................................................................. 46
Troubleshooting Chart .................................................................................................... 47
Appendix A: Product Specifications .......................................................................................... 49
MKS Types 622D and 626D Units ................................................................................. 49
Type 623H Transducer ................................................................................................... 50
Appendix B: Model Code Explanation ....................................................................................... 51
Model Code .................................................................................................................... 51
Index ............................................................................................................................................ 53
