The 1-channel level controller MK91-12-

R/24VDC monitors and regulates conductive

liquid levels.

As a dual level regulator, it can be used to

control pumps or solenoid valves, as monitoring device it is designed for run-dry or over

flow protection.

The level controller not only provides optimum reliability in differentiating liquids, it is

also suited for the distinction between foam

and liquid. The responsivity (liquid resistance)

is adjustable between 0.2 … 100 kò. First,

select one of the four sensitivities with the

Range switch. Then you can finetune the

switchpoint via the potentiometer at the front.

The separately adjustable switch-on and

switch-off delay is very important for turbulent liquid levels. You can set a delay time between 0 … 20 s via the potentiometers at the

front.

Two relay outputs each with one changeover

contact are available to output the switching

commands. The output configuration of both

outputs can be changed from NC mode (R) to

NO mode (A) for all measuring ranges using

the Range switch.

The switching status of the output is indicated

by a yellow LED and operational readiness by

a green LED.

For further information, please order out installation guidelines.

■ Responsivity: 0.2…100 kò

■ Hysteresis: 10%

■ Output: 2 relays with 1 changeover contact

■ Electronic switching of electrodes

■ Switch-on/off delay 0…20 s, separately adjustable

■ Reliable distinction between foam and liquid

■ Galvanic isolation of input circuits, output

circuits and power supply