Frequently Asked Questions - PCE Health and Fitness TDS 75 User Manual

9.2

Frequently asked questions

Question:
New pipe and all installation requirements are met: Why is still no signal detected?
Help:
Check the pipe parameter settings, installation method and wiring connections. Make sure that
sufficient coupling gel has been applied, the pipe is filled with fluid, the distance between the
sensors matches the value displayed in M14 and the sensors are installed in the correct direction.
Question:
Old pipe with contamination inside, no or bad signal detected: How to solve the problem?
Help:
Check that the pipe is filled with fluid. Try the Z method for installing the sensors. Carefully select
a good section of pipe and clean it completely, apply enough coupling gel to each sensor face
and install the sensors properly. Slowly and carefully move each sensor against each other
around the installation point until maximum signal is achieved. Make sure that the new installation
point inside the pipe is not contaminated and that the pipe is concentric (not distorted) so that the
sound waves are not reflected outside the intended area.
Question:
Why is the CL output (current loop mode) abnormal?
Help:
Check whether the output mode is set correctly in window M32 under "Mode". Check whether the
maximum and minimum current values are set correctly in window M32 under "Range".
Recalibrate the current loop and check this in window M32 under "Check".
Question:
Why is the flow rate still displayed as zero even though there is obviously fluid in the pipe and the
"R" symbol is displayed on the screen?
Help:
Check whether the "zero setting" was performed when the flow was not zero (see window M22).
If this is the case, restore the factory setting in window M22-Reset.
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