18
Temposonics
®
TH CANbus ATEX / IECEx / CEC / NEC / KCs / EAC Ex certified / Japanese approval
Operation Manual
NOTICE
On all sensors, the areas left and right of the active stroke length are
provided for null and dead zone. These zones should not be used for
measurement, however the active stroke length can be exceeded.
Controlling design dimensions are in millimeters and measurements in ( ) are in inches
Sensors with stroke lengths ≥ 1 meter (3.3 ft.)
Support horizontally installed sensors with a stroke length from 1 meter
(3.3 ft.) mechanically at the rod end. Without the use of a support, rod
and posi tion magnet may be damaged. A false measurement result
is also possi ble. Longer rods require evenly distributed mechanical
support over the entire length (e.g. part no. 561 481). Use an U-magnet
(Fig. 17) for measurement.
Start and end positions of the position magnets
Consider the start and end positions of the position magnets during
the installation. To ensure that the entire stroke length is electrically
usable, the position magnet must be mechanically mounted as follows.
Mounting floats
A stop collar is ordered separately with a float. The stop collar
consists of material, which is below the specific gravity of the fluid. It
is designed to keep the float out of the dead zone. The placement of
the stop collar is dependent on the float and placement of the magnet
within the float. If your application requires measuring to the bottom
of your vessel, ask MTS Sensors about our low lift-off float option.
Multi-position measurement
The minimum distance between the magnets is 75 mm (3 in.).
NOTICE
For multi-position measurement, use magnets of the same type
e.g. 2 × U-magnet (part no. 251 416-2).
The minimum allowed distance between the magnets (i.e. front face
of one to the front face of the next one) is 75 mm (3 in.). Contact
MTS Sensors if you need a magnet distance < 75 mm (3 in.).
Fig. 17: Example of sensor support (part no. 561 481)
Fig. 18: Start and end positions of magnets
Fig. 19: Minimum distance for multi-position measurement
Fig. 20: Liquid level measurement
U-magnet
Sensor rod
Non-magnetic fixing clip
TH with ring magnet / U-magnet
Reference edge of mounting
Start position
51 (2.01)
End position
63.5 / 66* (2.5 / 2.6*)
* Stroke length > 5000 mm (196.9 in.)
Dead zone
Measuring range
A
B
C
Float
D
Stop collar
B
A
C
D
TH with ring magnet / U-magnet
≥ 75 (≥ 3)
