Flowmeters and System Solutions

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MULTIPOINT TEMPERATURE COMPENSATED FLOW COMPUTER

Format:EL4501

Using the most advanced electronic technologies, this digital instrument has been developed specifically to meet the most demanding flow measurement applications in petroleum products receiving facilities where accuracy is the prime requirement.
In response to the liquid flowrate and temperature information arriving from the sensing terminal, such as a flowmeter, it totalizes the flow while implementing meter error and temperature corrections.
An analog output and instant flowrate (corrected for meter error and temperature) output are additional provisions.

Features
Product Specifications
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FEATURES

●Incorporated capabilities to calibrate meter error for viscosity and flow velocity (viscosity correction), to correct by volumetric conversion factor (temperature correction), and to display the total flow readings
readily permit the application engineer to build a petroleum products measurement system with this single instrument.
●By simple key operations or by inserting an IC card in the slot, parameters such as meter factor, temperature ranges and other parameters in the connected flowmeter can be easily changed.
●Built around a microprocessor, the instrument carries out calculations entirely in digital signal processing circuits to achieve high degree of accuracy and reliability.
●Variables such as temperature and accumulated total can be reviewed on command with the front panel keypad even during operation.
●Viscosity and density settings are continuously adjustable. Also, by switching the oil kind, the instrument is compatible with three different kinds of oils.
●Remote viscosity and density read/write through the communication link is acceptable.
●A nonvolatile memory (E 2 PROM) retains all parameters and variables. Totalized value can be reset upon power depending on setting.

Major specifications

Kinds MULTIPOINT TEMPERATURE COMPENSATED FLOW COMPUTER
Type EL4501 (Multiple temperature correction)
Power supply for combined flowmeter 8.5, 13.5, 24 VDC (depends on combined flowmeter)
Display Total flow (before correction, after viscosity correction, after viscosity and temperature correction), temperature, set density, set viscosity, etc.
Input signal Flowrate (pulse), temperature
Function Scaler, frequency division setting, F/I conversion, instrumental error correction, temperature correction, communication
Output signal Analog, pulse, alarm
Computation range Temperature –10 to +118※1
Density ※2
Viscosity 0.4 to 199.9mPa·s
Computing accuracy Total flow after correction
Total flow after viscosity and temperature correction ±0.075% RD
Temperature ±0.1% of SPAN or ±0.3% of SPAN
Ambient temperature –10 to +50°C
Construction Non-explosionproof
Power supply AC- or DC-powered

※1: Excluding the range not specified in JISK2294-1995. Correction reference temperature: 15°C

※2: Crude oil: 0.6105 to 1.0750 g/mL, fuel oil: 0.6530 to 1.0750 g/mL, lubrication oil: 0.8000 to 1.1640 g/mL

Specification

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Features
Product Specifications
Document

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