NIVELCO EasyTREK SP-500 Pro, Инструкция по установке и программированию

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P06: - - - - Far-end blocking FACTORY DEFAULT: 0
Far-end blocking is the range below the level set in parameter
P06 . It can be used to avoid interference from a stirrer or
heater at the bottom of the tank.
The device uses special signals for echoes in this range.
A.) Measuring level or volume
Level sinking below
•
the value of P06 current output transmits the value of far-
end blocking
•
below SUB 0 (7/8 of P06) the ERROR CODE 10 is
transmitted via HART
•
Level rising over value of far-end blocking:
The calculation of the level and volume is based on the programmed tank dimensions; therefore, the measured or calculated process values
will not be influenced in any way, by the far end blocking value.
B.) Open channel flow metering
Far-end blocking is used for those small levels below which the accurate flow calculation is no longer
possible.
• Level in the flume/weir sinking below the blocked out range:
-
Output current value will be corresponds to the value of Q = 0
- 0 value transmitted via HART for display of „No Flow” or 0
• Level in the flume/weir rising over the excluded range:
The calculation of flow will be based on the programmed flume/weir data; therefore the measurement
values are no affected in any way by the far end blocking value.
P06 = 0 to disable remote blocking.
EView2 setting: “Device Settings” → “Measurement configuration” → “Blocking.”