GESTRA SPECTORcontrol II, Original Installation Instructions

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Important notes
About this user manual
This user manual is a short operating manual containing important information on the installation, func-
tion, electrical connection and commissioning of the equipment.
Additional documents
The Equipment Description EP-370 (SPECTORcontrol) is part of this user manual. This Description -
among other documents - is stored in the equipment. In addition you can find all pertinent documents
on the supplied documentation CD "SPECTORcontrol “.
Terms and definitions
3-element controller
Large, momentary spikes in steam consumption cause the water in the steam boiler to boil up and ef-
fervesce, resulting in abnormally high readings of the level electrode.
To correct this error not only the liquid level but also the amount of steam and feedwater are measured
and their difference is used to determine an appropriate weighing factor. This factor evaluates the influ-
ence of the difference (steam flowrate - feedwater flowrate) on the level reading.
Creep flow
Very low flowrates due to creep flow do not affect flowrate measurements. Creep flow is caused by
thermal convection and occurs even if the valve is completely closed (and the output flow should be
zero).
Switch-off threshold
If the manipulated variable (i. e. the output signal) of the pump control falls below the switch-off
threshold the associated pump is switched off. This prevents the pump from constantly being turned on
and off.
Usage for the intended purpose
SPECTOR control is used for controlling, viewing and parameterizing GESTRA CANopen equipment.
However, it is not only designed for GESTRA CANopen equipment but can also be used for third-party
devices approved by GESTRA and connected to the plant system.