Xylem 703 User Manual
MANUAL FOR PUMP C0NTROLLER 703MANUAL FOR PUMP C0NTROLLER 703
MANUAL FOR PUMP C0NTROLLER 703
MANUAL FOR PUMP C0NTROLLER 703MANUAL FOR PUMP C0NTROLLER 703
Contents:Contents:
Contents:
Contents:Contents:
General information 3
Ultrasonic measuring system 3
Hydrostatic measuring system 3
Amplifier 703 4
Mounting 4
Electrical connection 5
Dimensions 6
Specifications 6
Maintenance 6
Orderingnumbers 6
Ultrasonic sensor 7005 7
Pressure transmitter 7050/7060 8
M703GB/9607
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CE – CERTIFICATE OF CONFORMITY
This product complies with the requirements concerning electromagnetic
compatibility (EMC) stipulated in Council directive no. 89/336/EEC of 3rd
May 1989, altered at directive no. 92/31/EEC, on the approximation of the
laws of the Member States relating to electromagnetic compatibility.
MJK Automation A/S declare that the product complies to the values
stipulated in EN 50081-1 and EN 50082-1.
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General InformationGeneral Information
General Information
General InformationGeneral Information
The MJK 703 Pump Controller is a compact unit designed
for the control of liquid levels in 2-3 pumps or valves
between four variable level settings. The Pump Controller
has 3-digit continuous display of level measurements.
Ultrasonic MeasuringUltrasonic Measuring
Ultrasonic Measuring
Ultrasonic MeasuringUltrasonic Measuring
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If hydrostatic measuring system is applied (703P), the
pump controller is delivered with a pressure transmitter for
either absolute or relative pressure.
At absolute pressure transmitter type 7050 measures the
hydrostatic pressure in the liquid (at the bottom). The
amplifier has a build-in pressure compensation.
ostatic Measuringostatic Measuring
ostatic Measuring
ostatic Measuringostatic Measuring
SystemSystem
System
SystemSystem
The ultrasonic sensor has a moulded-in piezoelectric
crystal which emits an ultrasonic signal and receives an
echo signal from the surface measured. The amplifier
converts the signals received from the sensor to a levelÂproportional signal which is used for display of level values
and for maximum and minimum level monitoring within the
six limit settings.
At relative pressure transmitter type 7060 is used, this
transmitter has a tube for pressure equalizing. The
measured bottom pressure is equalized with the surface
pressure via the tube, and the transmitter directly
measures the correct liquid pressure.
The 4-20 mA signal from the transmitter is sent to the
amplifier, where the level is indicated and the start / stop /
alarm signals are processed.
When measuring in pressure tanks, the maximal pressure
(super-pressure + liquid pressure) must not exceed the
range of the connected transmitter.
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