Flow Simulation; Coefficients F S - bürkert 8045 Bedienungsanleitung

4.5.4 Flow Simulation

A flow value can be simulated within this menu, allowing the user to test the system without
any liquid being present. The simulated value influences all the outputs including the relays
and pulse output.
Press or to stop the flow simulation.
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4.5.5 Coefficients F
The transmitter uses these coefficients to calculate the K factor for the process using
K = K x F x K
process fitting s w
- F is the sensor cell specific constant. It is preset ex works and can be modified.
S
- K is the temperature correction coefficient, for a PVDF sensor. It depends on the pipe
W
dimensions (Tw is the fluid temperature):
with a DN15, Kw= 1-(0,2 x (Tw °C- 20 °C)/100)
with a DN20/25, Kw= 1-(0,1 x (Tw °C- 20 °C)/100)
with a DN > DN25, Kw= 1-(0,05 x (Tw °C- 20 °C)/100)
K-SENSOR
END
Access the K FACTOR menu within the CALIBRATION mode to have the
transmitter calculating the process K factor, using the entered Fs and Kw
values.
CALIBRATION
FLOW
FLOW
and K
S W
. For a stainless steel sensor, Kw = 1.
FS=1.000
ENTER ENTER
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Enter flow value
KW=1.00
ENTER
0....9
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