Hans Turck GmbH & Co.KG ñ D-45472 Mülheim an der Ruhr ñ Witzlebenstraße 7 ñ Tel. 0208 4952-0 ñ Fax 0208 4952-264 ñ more@turck.com ñ www.turck.com1 / 2

Level controller

1-channel

MS91-12-R (UNT)

The 1-channel level control MS91-12-R mon-

itors and regulates conductive liquid levels

(II). As a dual level regulator, it can be used

to control pumps and solenoid valves (I). As

monitoring device it is designed for run-dry or

over flow protection.

The sensitivity (liquid resistance) is adjustable

between 0.1 … 100 kò. One of the four sen-

sitivity ranges is selected by the terminal con-

figuration. Fine adjustment of the switch point

within the selected range is achieved with a

front cover potentiometer. The level controller

not only provides optimum reliability in differ-

entiating liquids, it is also suited for the distinc-

tion between foam and liquid .

The adjustable switch-on and switch-off delay

is very important for turbulent liquid levels. A

delay time between 0.1 … 15 s can be set via

the potentiometer on the front.

Two parallely operating relay outputs with one

changover contact each are provided to out-

put the switching commands. The output con-

figuration of both outputs can be changed

from NC mode (no bridge between terminal

15/16) to NO mode (with bridge between ter-

minals 15/16).

The switching status is indicated by a yellow

LED.

The switching status of the output is indicated

by a yellow LED and operational readiness by

a green LED.

■ Output: 2 relays with changeover contact

■ Responsivity: 0.2…100 kò

■ Removable terminal blocks

■ Switching of electrodes via auxiliary relay

■ Switch-on/off delay adjustable 0.1…15 s

■ Reliable distinction between foam and liq-

uid

■ Galvanic isolation of input circuits, output

circuits and power supply