Flow Computer

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Electronic Instruments

EL4101/Saturated Steam Service Flow Computer, EL411/Superheated Steam Service Flow Computer

General

This instrument accepts flow, temperature and pressure signals from OVAL Vortex Flowmeter mainly for steam service measurement (EX DELTA) and indicates and outputs the total flow (mass and calorie) and instantaneous mass flowrate of steam.
*: Temperature input is only with EL4111.

Features

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Parameter change can easily be made by operating the front-panel key and by inserting an IC card.

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Fully digitalized computation enjoys high accuracy and high reliability.

Major specifications
Kinds Steam Service Flow Computer
Type EL4101 (Saturated Steam Service) EL4111 (Superheated Steam Service)
Power supply for combined
  flowmeter
13.5 or 24 VDC (depends on combined flowmeter)
Display Total flow (mass, calorie), instantaneous mass flowrate, specific weight, pressure, other Total flow (mass, calorie), instantaneous mass flowrate, specific weight, pressure, temperature, other
Input signal Flowrate (pulse), pressure Flowrate (pulse), pressure, temperature
Function Scaler, frequency division setting, F/I conversion, instrumental error correction, pressure correction, communication Scaler, frequency division setting, F/I conversion, instrumental error correction, pressure correction, temperature correction, communication
Output signal Analog, pulse, alarm
Computation
  range
Temperature 100 to 350°C (Span limited)
Pressure 0 to 3 MPa, standard span: 1 MPa
Computing
  accuracy
Mass flow ±0.5% RD
Calorie flow ±0.6% RD
Temperature ±0.1% of SPAN or ±0.3% of SPAN
Pressure ±0.1% of SPAN
Ambient temperature –10 to +50°C
Construction Non-explosionproof
Power supply AC- or DC-powered

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