IM-P337- 6 9 EMM Issue 2
7
2.1 Introduction
This booklet gives full details of the recommended procedures for the installation, maintenance and use of
the Spirax Sarco ILVA20 flowmeter. Abbreviated details of how to install the EL2270 temperature sensor are
also given and full details are supplied with the product.
Initial start-up procedures as well as fault finding guidelines are also included.
Description
The Spirax Sarco DN150 to DN300
is designed for use on saturated
and superheated steam, it can also
operate as a heat meter. It operates on
the spring loaded variable area principle
and produces a differential pressure
related to the rate of flow. The electronics
provide current loop, pulsed output and
Modbus EIA/TIA485 outputs. Steam flow
is density corrected. Pipeline pressure is
also measured.
Fig. 1 ILVA20 system installation
EMS/BEMS and PLC,
Chart recorders, DAQ etc
ILVA 20
MVT10
2. General system information
2.2 The Spirax Sarco ILVA20
flowmetering system
consists of 3 major
elements:
2.2.1 The ILVA20 pipeline unit
This is installed in the line where the flow is to be
measured. Using impulse pipework, this is
connected to:
2.2.2 The MVT10 assembly
The MVT10 assembly measures the differential
pressure and static pressure across the ILVA20
pipeline unit and converts this to a 4-20 mA output
signal or EIA/TIA 485 Modbus proportional to mass
flow or power.
Registered EU Design Application No. 005832607.
2.2.3
Additional equipment required for super heat
applications (sold separately)
EL2270 temperature transmitter (Pt100 to
EN60751: Class A) which is installed directly in the
pipework upstream of the ILVA20 pipeline unit,
enables the unit to measure superheated steam or
operate as a net heat meter.
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