Siemens SANITARY XCT-8 Manuel D'utilisation page 11

Placement Notes
Please refer to the tank diagram on the previous page to locate the reference numbers
cited below.
1. Beam should not detect bin bottom.
If this occurs use range extension parameters (on transceivers where available) to omit
false echoes. The XCT- 8 transducer operates with a beam angle of 12° and has a rise to
run ratio of approximately 10:1. This means that for every 1m (3.3 ft.) of tank height you
must allow for 0.1m (0.3 ft.) of material surface to reflect the ultrasonic pulses. In most
tanks the transducer should be centered as much as possible (without interference from
inlet) for optimum reading range.
2. Sound beam must be perpendicular to liquid surface.
When mounting the standpipe and ferrule you must ensure that the transducer face is
parallel with the liquid surface.
3. Echo has missed an improperly leveled transducer.
Similar to Note 2, ensure that the standpipe and ferrule are mounted so that the
transducer is face level with the measured liquid.
4. Calibrate under normal conditions.
When performing an empty or full calibration, the tank must contain its normal vapour
and be at its normal temperature.
Notes:
• The transducer is to be used only in the manner outlined in this instruction
manual.
• This transducer is recommended for use with liquids only.
Process Temperature Variations
The PTFE facing is constructed to allow for intense "clean-in-place" applications. When
installing the XCT-8 transducer into a system that uses a high temperature "clean-in-
place" process you must account for temperature variations in the transducer.
The temperature sensor's time constant is 45 minutes. This means that it takes 45 minutes
to change 63.2% of the temperature difference between the transducer and ambient.
Consult your engineering handbook for details on temperature constants.
7ML19985HX61 XCT-8 Sanitary Transducer– INSTRUCTION MANUAL Page EN-9