KROHNE TIDALFLUX IFM 4110 PF EN - Manual (Page 46)

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Part C Special Applications, Functional Checks,
Service and Order Numbers
6. Special applications
6.1 Use in hazardous areas
The IFS 4000 PF can optionally be delivered with a factory-supplied certificate for Eex zone 2 or Eex N.
The signal converter IFC 110 PF must always be installed outside the hazardous area.
Installation must proceed according to Eex standards.
6.2 Magnetic sensors MP (optional)
•
The MP magnetic sensors allow the signal converter to be operated with a bar magnet without opening the housing.
•
This optional equipment can also be retrofitted (see sect. 8.2). A green LED in the “magnet active” field on the front
panel indicates that magnetic sensors are installed.
•
The function of the three magnetic sensors is identical to the function of the corresponding keys.
•
Take hold of the plastic cap of the bar magnet and touch the glass pane on top of the magnetic sensors with the blue end of
the bar magnet (north pole).
•
Sensor tripping is acknowledged by corresponding symbols appearing on the display and by a change of color of the green
LED referred to above.
6.3 Changing the load capacity of the output A1 for polarized DC operation
In case of polarized DC operation of output A1 (status or pulse output), the load capacity can be increased to I
≤
200 mA
(factory setting: I
≤
100 mA).
Switch off the power supply before opening the housing!
1) Remove the cover from the terminal compartment (remove 2 screws).
2) Pull all plug-in terminals out of the sockets inside the terminal compartment.
3) Remove the glass cover from the control compartment (remove 4 screws).
4) Remove 4 screws from the front panel, take hold of the handle on the upper end of the front panel and carefully pull the
complete electronic unit out of the housing.
5) Put down the electronic unit with the front panel facing down.
6) Unscrew the S
LP
screw from the I/O printed circuit board (inputs/outputs) and carefully pull the PCB out of the plug
base (see illustration in sect. 8.3).
7) Remove the two X4 jumpers from the I/O printed circuit board, turn them by 90° and plug them back into the PCB in
“DC” position (see illustration in sect. 8.3).
8) Re-assemble in reverse order (items 6 to 1).
6.4 RS 232 adapter incl. CONFIG software (optional)
An RS 232 adapter including CONFIG software is available as an optional extra for operation of the signal converter with an
MS-DOS PC. Detailed instructions are included in the package.
The RS 232 adapter connecting the signal converter to the PC or laptop is plugged into the ImoCom bus multipoint connector
on the front panel of the signal converter (underneath the sliding window, see sect. 4.2).
6.5 Pulsating flow
For Tidalflux applications, this function (Fct.3.06 APPLICAT.) should always be put on the “pulsating” option.
6.6 Unstable display and outputs
Unstable displays and outputs may occur:
- with high amounts of solids
- with inhomogenities
- with badly blended mixtures
- after constant chemical reactions in the process liquid