Description; Area Of Application; General Description; Design - bürkert 8201 Bedienungsanleitung

5.

DescRipTion

5.1.

Area of application

The electrolyte monitoring is intended to control the level of electrolyte
in the electrolyte bottle of the pH sensor type 8201.
5.2.

General description

5.2.1.

Design

The electrolyte monitoring comprises (see Fig. 1):
• A sensor that contains two ultrasonic cells: an emitter and a
receiver;
• A screw-on cover that maintains the flexible hose in the sensor;
• A 5-m cable fitted with a right-angle M12 plug, that contains one
yellow and one green LEDs.
The electrolyte monitoring requires a power supply of 12-30 VDC and
has a PNP output which can be connected to an alarm. The electrolyte
monitoring is equipped with an M12 5-pin male fixed connector.
8
Type 8201
Description
right-angle
plug
LEDs
cable
Fig. 1: Exploded view of the electrolyte monitoring
5.2.2.

measuring principle

The sensor contains two ultrasonic cells: an emitter and a receiver.
The ultrasonic emitter transmits short high-frequency pulses. The
ultrasonic receiver analyzes the signal received:
• If the hose is filled with liquid, a part of the ultrasound is trans-
ferred by the emitter through the hose to the receiver. The yellow
LED is ON and the output is active.
• If the hose is empty or if there is a bubble, the part of the ultra-
sound received by the receiver is much lower. In that case, the
yellow LED of the connector goes out to indicate an error and the
English
screw-on cover
ultrasonic cells
sensor
5-pin male
connector