Channel Monitoring

MR 200

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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 P605 (Zero Head) to have OCM calculations ignore levels below that value. Possible head = P007 minus P605.

Note: P603 (Max. Head) is preset to P007 and is not updated when P605 is used. Make sure you set P603 to the correct value when using P605.

P603

P006

P007

P605

2.Use P801 Range Extension where the Empty 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 (P006) level in normal operation without reporting an LOE. The value is added to Empty (P006) and can be greater than the range of the transducer.

 

P006

P603

P007

 

P801

The examples on the following pages show both methods.

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MultiRanger 100/200 – INSTRUCTION MANUAL

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Siemens 200 Setting Zero Head, Channel Monitoring, Examples on the following pages show both methods, P603 P006 P007 P605