The LABO-W limit switches are designed for the measurement and evaluation of sensor signals.

For this purpose, they have a powerful 16-bit microcontroller in their compact housing.

The standard versions are designed such that currents, voltages and frequencies which are common for industrial applications can be measured. They have a 20 cm long breakout cable and thus can be easily looped into the sensor line.

Special designs for other signals and plug connections are available on request. The LABO electronics make available an electronic switching output (push-pull) with adjustable characteristics (minimum/maximum) and hysteresis, which responds when an adjustable limit is fallen short of or exceeded.

If desired, the switching value can be set to the currently existing flow using "teaching".

Switching and switch-back times can be adjusted dependent upon each other. The power-on-delay function makes it possible to keep the switching output in a defined state for a variable time after the supply voltage is switched on.

Models with analog or pulse output are also available.

Technical Data : 

Inputs and metering ranges                         : Strom 0..20 mA Voltage 0..10 V Frequencies 0..10 kHz others available on request

Measurement uncertainty                             : Typically ±0.1 % of full scale value

Operating temperature                                 : 0..+70 °C (higher values available on request)

Storage temperature                                     : -20..+80 °C

Sensor supply                                                : Corresponds to supply voltage (others available on request)

Display                                                           : yellow LED (On = Normal / Off = Alarm / rapid flashing = Programming)