Model TK1

The TK1 liquid level switches are float-actuated devices designed for horizontal mounting in a tank or process vessel through threaded or flanged connections. This low-cost switch is ideal for OEM applications where a single point high or low level alarm is desired.

Operating Principle

The TK1 achieves switching action through the use of a magnet attached to the float assembly and the magnet’s interaction with a reed switch.
As the liquid level changes, the float and, therefore, the float magnet, moves. The proximity of the float magnet to the reed switch causes the switch to change state, making or breaking an electrical circuit.


Storage tanks
Process vessels
High or low level alarm
Low level shut-down
Overflow protection
Explosion-proof installations
Seal pots
OEM applications


Pressure ratings to 1500 psi (103 bar)
Process temperature ratings to +300° F (+149° C)
Specific gravity as low as 0.40
1.5" or 2" process connections
Compact design
For use on rising or falling level
Reliable reed switch action
All stainless steel construction


1-1/2 or 2 inch process connections
Hermetically sealed reed switch with optional
four-wire dry contact relay
316/316L stainless steel or cast iron/aluminum enclosure material
Type of contacts: SPST, SPDT or DPDT
For use on rising or falling level


No Approval found for the product.


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+ Instruction & Operating Manual