
HDI 2522 Position Indicator Gauge
User’s Manual – HDI 2522, Rev B | May 2022
Table of Contents
Section 1 – Introduction ..................................................................................................................................... 4
1.A General Information ........................................................................................................................... 4
1.B Unpacking and Inspection ................................................................................................................ 4
1.C Cautionary Information..................................................................................................................... 5
Section 2 – HDI 2522 Series Position Indicating Gauge Systems Overview ................................... 6
2.A System Overview ................................................................................................................................. 6
2.B Accuracy .................................................................................................................................................. 7
2.C Control Head .......................................................................................................................................... 7
2.D Potentiometers ..................................................................................................................................... 7
2.E Cable ......................................................................................................................................................... 8
2.F System Options ..................................................................................................................................... 8
2.G Certification ........................................................................................................................................... 9
Section 3 – Installation ........................................................................................................................................ 9
3.A Control Head 2522 .................................................................................................................................. 9
3.B Cables and Routing .......................................................................................................................... 10
Section 4 – Gauge Functions .......................................................................................................................... 10
4.A Overview .............................................................................................................................................. 10
4.B Gauge Head Features ...................................................................................................................... 11
4.C Engineering Units Display ............................................................................................................. 11
4.D Main Display ....................................................................................................................................... 11
4.E Bar Graph Display............................................................................................................................. 11
4.F Membrane Panel ............................................................................................................................... 11
4.G Power Off / On Button ................................................................................................................... 11
4.H Mode (M) Button Calibration Only ............................................................................................ 11
4.I Up () Button .................................................................................................................................... 12
4.J Down () Button.............................................................................................................................. 12
4.K Enter (E) Button ................................................................................................................................ 12
Section 5 – Gauge Operation .......................................................................................................................... 12
5.A Gauge Operation Overview ........................................................................................................... 12
5.B Run Mode ............................................................................................................................................. 12
Section 6 – Maintenance .................................................................................................................................. 14
6.A Cleaning ................................................................................................................................................ 14