Guralp Systems CMG-5T Compact - Manual (Page 2)

CMG-5T Compact
Table of Contents
1 Introduction............................................................................................................... 3
2 Installation.................................................................................................................5
2.1 Unpacking and packing......................................................................................5
2.2 Initial testing.......................................................................................................6
2.3 Installing the sensor...........................................................................................7
2.3.1 Temporary installations..............................................................................8
2.3.2 Installation in Hazardous environments....................................................8
2.4 Removing offsets from the 5T Compact ............................................................9
2.4.1 Manual offset removal.................................................................................9
2.4.2 Removing offsets using a terminal connection........................................10
2.4.3 Removing offsets using a third party digitisers........................................11
2.5 The hand-held control unit..............................................................................11
2.5.1 Signal meter...............................................................................................11
2.5.2 Calibration.................................................................................................12
2.5.3 Open-loop response...................................................................................12
2.5.4 Banana sockets..........................................................................................12
3 Calibration............................................................................................................... 13
3.1 Absolute calibration.........................................................................................13
3.2 Relative calibration...........................................................................................13
3.3 Calibrating accelerometers...............................................................................14
3.3.1 Open-loop calibration...............................................................................17
3.4 The calibration pack.........................................................................................17
3.4.1 The calibration sheet.................................................................................17
3.4.2 Frequency response...................................................................................18
3.4.3 Obtaining copies of the calibration pack..................................................19
4 Inside the 5T Compact............................................................................................20
4.1 The force transducer.........................................................................................21
4.1.1 The sensor transfer function.....................................................................21
4.2 Electrical connections......................................................................................22
5 Connector pinout.....................................................................................................24
6 Specifications.......................................................................................................... 26
7 Revision history.......................................................................................................27
2 Issue E