Application occasions: It can quickly respond to control network equivalence in connection with quantitative process adjustment occasions.

Key points for changing the settings of the converter

1. Fct1.02 TIMECONST (change time constant) is set to "ONLY I" and the time constant is set to 0.2S/2, and the instrument size is DN2.5-300/1/10"-12" dynamic response< /p>

No signal response time: about 0.06S (under 50 HZ line frequency)

About 0.05S (under 60 HZ line frequency)

Time constant: set as above, additional pulse 0.1S current output

3. (Changing the excitation frequency by a factor of 3 is sufficient to reduce the no-signal response time)

Fct3.02 flow meter sub-function "FIELD.PREQ" changed to "1/2"

In actual use, only IFM 5080 K (DN25-100/1/10"-4") and IFM 4080 K (DN10,15,50-100/1/10",1/2",2"-4")< /p>

1. Electromagnetic flowmeter unstable display and output

Factors that cause instability

High particle content fluid

Non-uniform fluid

Bad stirring fluid

Process fluid with chemical reaction still going on

In addition, if it is pumped by a membrane pump or a reciprocating pump, it will also be a pulsating flow. See section 5.4

Operation points for changing the settings of the conversion section

● Fct1.04 DISP.FLOW

Change the setting to "BARGRAPH" to better analyze the instability of the display

● Fct1.02 TIMECONST (change time constant)

If the output is very unstable, set it to "ALL" generally "ONLY".

Set the time constant to about "20S" observe the degree of unstable display and adjust the time constant (if necessary)

● Fct3.06 APPLTCAT (adjustment section A/D converter overload point in actual application) is set to "PULSATING" on the basis of trial adjustment. If it fails

The work returns to "STEADY".

● Fct3.02 FIELD. FREQ (change magnetic field frequency)

On the basis of the experiment, change the setting to "1/2"; if it is unsuccessful, return to the previous setting, usually "1/6".

Actual use only IFM 5080 K (DN2.5-100/1/10"-4") and IFM 4080 K (DN10,15,50-100/1/10",1/2",2"-4") .