Operating
7.12 Open Channel Monitoring (OCM)
HydroRanger 200 HMI
Operating Instructions, 06/2018, A5E36281317-AC
139
7.12.2
Setting Zero Head
Many PMDs start flowing higher than the traditional empty distance of the application. You
can account for the flow in one of two ways:
1.
Use Zero Head (2.13.4.5) (Page 244) to have OCM calculations ignore levels below that
value. Possible head = Span (2.2.2.) (Page 169) minus Zero Head (2.13.4.5.) (Page 244)
Note
Maximum Head (2.13.4.2.) (Page 243) is preset to Span (2.2.2.) (Page 169) , and is not
updated when Zero Head (2.13.4.5.) (Page 244) is used. Make sure you set Maximum
Head (2.13.4.2.) (Page 243) to the correct value when using Zero Head (2.13.4.5.)
(Page 244)
①
α
④
Zero Head (2.13.4.5.) (Page 244)
②
Empty (2.2.4.) (Page 170)
⑤
Maximum Head (2.13.4.2.) (Page 243)
③
Span (2.2.2.) (Page 169)
2.
Use Range Extension (2.2.7.) (Page 172) where the Empty (2.2.4.) (Page 170) level is
set to the bottom of the weir, and above the bottom of the channel. It should be used if
the surface monitored can fall past the Empty level in normal operation without reporting
an LOE. The value in Range Extension (2.2.7.) (Page 172) is added to Empty (2.2.4.)
(Page 170) and can be greater than the range of the transducer.
Содержание HydroRanger 200 HMI
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Страница 20: ...Introduction 1 5 Notes on warranty HydroRanger 200 HMI 18 Operating Instructions 06 2018 A5E36281317 AC ...
Страница 24: ...Safety notes HydroRanger 200 HMI 22 Operating Instructions 06 2018 A5E36281317 AC ...
Страница 28: ...Description 3 5 Modbus communication HydroRanger 200 HMI 26 Operating Instructions 06 2018 A5E36281317 AC ...
Страница 159: ...Parameter reference 8 2 Parameter indexing HydroRanger 200 HMI Operating Instructions 06 2018 A5E36281317 AC 157 ...
Страница 276: ...Parameter reference 8 10 Language 6 HydroRanger 200 HMI 274 Operating Instructions 06 2018 A5E36281317 AC ...
Страница 322: ...Pump control reference B 13 Other pump controls HydroRanger 200 HMI 320 Operating Instructions 06 2018 A5E36281317 AC ...
Страница 352: ...Communications C 41 Single parameter access SPA HydroRanger 200 HMI 350 Operating Instructions 06 2018 A5E36281317 AC ...
Страница 354: ...Updating software HydroRanger 200 HMI 352 Operating Instructions 06 2018 A5E36281317 AC ...
Страница 359: ...HydroRanger 200 HMI Operating Instructions 06 2018 A5E36281317 AC 357 Conduit entry for Class I Div 2 applications F ...
Страница 360: ...Conduit entry for Class I Div 2 applications HydroRanger 200 HMI 358 Operating Instructions 06 2018 A5E36281317 AC ...
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Страница 372: ...Programming chart G 1 Programming chart HydroRanger 200 HMI 370 Operating Instructions 06 2018 A5E36281317 AC ...
Страница 390: ...LCD menu structure H 1 LCD Menu Structure HydroRanger 200 HMI 388 Operating Instructions 06 2018 A5E36281317 AC ...
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