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For adjusting the current consumption in the error mode (Depict 5), proceed as follows
unscrew lid (1) of probe head with open-end wrench
hold both “4 mA” (2) and “20 mA” keys (3) simultaneously in pressed for a period of time of no less than 3
seconds.
The green LED (4) “Cal/Err” is flashing fast, with the current consumption of the FFG-T...EX
system being 16 mA. LED, after 5 seconds, will cease to flash, displaying, for 2.5 seconds, the set
error current consumption. Once the LED is permanently illuminated, I error = 21,5 mA; once it
extinguishes I error = 3.6 mA. With the key not being pressed down again, the FFG-T....EX
system will remain in the error mode for another 2.5 seconds before changing back into the
gauging mode without modifying the adjustment.
For setting a current consumption of 3.6 mA during the 10-second dwelling time in the error mode
briefly press down the key “4 mA” key (2) (for 0.1 to 2 seconds)
For adjusting a current consumption of 21.5 mA during the 10-second dwelling time in the error
mode
briefly press down the “20 mA” key (3) (for 0.1 to 2 seconds).
The new adjustment will not be adopted by the FFG-T...EX system until it automatically
changes from the adjusting mode to the gauging mode (with LED disappearing). The
FFG-T...EX sensor should, therefore, not be cut off from the power supply before.
Maintenance
When duly employed, the FFG-T...EX systems do not require any servicing measures. However,
within the scope of routine inspections they should undergo visual checks as part of the container
pressure check.
Trouble Shooting
The following table lists the most frequent causes of error and the necessary countermeasures
Trouble
Cause
Measure of Correction
No or undefined function
Incorrect terminal positioning
To compare with connecting diagram
Insulation secured under terminals
To check terminal points
Locating rings displaced or incorrectly
mounted after removal from the slide tube
To check position of locating ring
Incorrect 0-100% values
Float wrongly mounted
To turn float around
Incorrect specifications in order
To contact factory
Waveguide in defective condition caused by
mechanical interference
To return to factory
Incorrect setting
To re-adjust or contact factory
The FFG-T...EX system
cannot be attached to the
proper point within the
container
Thread size or flange size of FFG-T...EX
sensor and container not conforming
To re-design the container
To re-design of FFG-T...EX in factory
Thread of attachment sleeve on container in
defective condition
To re-work thread or replace
attachment sleeve
Screw-in thread on FFG-T...EX in defective
condition
To return to factory
Please give us a call in case of any difficulties. We will do everything we can to provide you with the
required advice and help.
