Operating Instructions for Helical Flow Meters Type SRZ
KEM
3
1 General
Information
1.1 At a Glance
The SRZ Helical flow meters are positive displacement meters with built-in hall sensors. They
provide high resolution and reverse-flow detection.
The SRZ meters are perfect for media with high viscosity (30 to 10 x 10
6
mm²/s) featuring high
accuracy and low pressure drop.
The measurement is pulsation free and insensitive to pulsating flows.
1.2 Safety
1.2.1 General Safety
All statements regarding safety of operation and technical data in this manual will only apply when
the unit is operated correctly in accordance with this manual.
The data for Ingress Protection (IPxx) will only apply when all connectors are caped properly with
the corresponding counterpart with the same or better IP rating. Cable glands must be populated
with cables with the specified diameter and closed properly.
During operation all openings of the housing must be closed unless otherwise noted in this manual.
All connections to the load and to the supply must be made with shielded cables unless otherwise
noted in this manual. This unit must be grounded.
1.2.2 Special requirements for Ex installations
When used in hazardous area a suitable separation amplifier or zener barriers must be used.
When using long cables make sure that the maximum inductances and capacitances for the
respective voltage or gas group are not exceeded.
