Parker X-Flow FM-1407, Инструкции по эксплуатации

Страница: 32 / 35

Page 32 Instruction manual Parker X-Flow FM-1407 Rev - 11/2021
The measured value is filtered with a first order low pass filter with a filter time constant between these
two τ values.
Dynamic Display Factor
Type Access Range FlowDDE Flowbus® Modbus® PDU
Float RW

0 …
1.0
56 117/1 0xF508..0xF509/62729..62730
Static Display Factor
Type Access Range FlowDDE Flowbus® Modbus® PDU
Float RW

0 …
1.0
57 117/2 0xF511..0xF512/62737..62738
Cycle Time
Type Access Range FlowDDE Flowbus® Modbus® PDU
Unsigned char R 0…255 52 114/12 0x0E4C/3661
Note: The unit of parameter Cycle Time is 10ms. Example: value 0.2 means 2ms
4.1.8 Disabling Micro Switch
It is possible to disable the Micro Switch on top of the instrument. This can prevent undesired use of this
button.
Disabling the micro switch can be performed with the following parameter:
IOStatus
Type Access Range FlowDDE Flowbus® Modbus® PDU
Unsigned char RW

0…255 86 114/11 0xF258/62041
Bit 3 [7..0] is used to disable the micro switch.
0 = micro switch disabled
1 = micro switch enabled
Procedure to enable the micro switch:
•
Read IOStatus
•
Add 8 to the read value
• Write IOStatus
Procedure to disable the micro switch:
•
Read IOStatus
• Subtract 8 from the read value
• Write IOStatus
4.2 Using other gasses than specified
Each instrument has been calibrated and adjusted for customer process conditions.
Controllers or valves may not operate correctly, if process conditions vary too much, because of the
restriction of the orifice in the valve.
For flowmeters performance and accuracy may be affected tremendously if physical fluid properties
such as heat capacity and viscosity change due to changing process conditions.
Check section 1.6, “Operating Principles”, for detailed information about the sensor principle.
4.2.1 Fluid conversion factor information
Contact the factory for more information on conversion factors, at any temperature/pressure
combination, when converting to different fluids and gases.