Tank Sensors; Pressure Switch; Field-Effect - Thetford Marine TECMA Design Line Installation Et Mode D'emploi

3.6

Tank sensors

The sensor wiring of the control units, both in the standard one-level version (grey / black),
and in the two-level version for Touch (red / black and white / green) have a voltage of 7V.
You can connect:
• Sensors with clean contact (float, with pressure switch or similar) which close the
contact between the two poles of the connector.
• Electronic sensors with the following specifications:
o Power 7V.
o Electrical absorption 12,75 mA +/-1 mA when the sensor is un-activated and
22,75 mA +/- 1 mA when activated.
WARNING: In any case, do not connect the sensor cable to any power source.
NOTE: For the compatibility of the control units with other types of sensors or for the
use of connections other than those indicated in the wiring diagrams, contact the
Tecma.
Tecma sensors can be of two types:
For the installation guide see Appendix A3

Pressure switch

The pressure switch sensors can run with any panel. They are connected to the control unit
with the grey/black wire (two-level version: red / black and white / green). In the presence of
several control units on board, you must wire all the control units together before connecting
the sensor. See fig. as example.

Field-Effect

These sensors can run with any panel. They can be attached outside of the blackwater tanks
(max thickness of 10 mm).
• Full Tank Sensor
• Mid Tank Sensor – Optional
Tecma S.r.l.
Via Flaminia | Loc. Castello delle Formiche
05030 Otricoli (TR)
ITALY
Design and Flexi Line | instructions for installation and use | ENG
- Pressure switch
- Field-effect (Mirus cel)
62
T +39 0744 709071
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