Flowmeters and System Solutions
Flowmeters and System solution.
Flowmeters and System Solutions
Flowmeters and System solution.
PRODUCTS
Format：EL4121
Using the most advanced electronic technologies, this digital instrument has been developed specifically to meet the most demanding gas flow measurement applications where accuracy is the prime requirement.
In response to the gas flowrate, temperature, and pressure information arriving from the sensing terminal, such as a flowmeter, it calculates gas flow, reduced to the equivalent volume flow under standard conditions, and totalizes the flow.
In addition to meter error curve correction capabilities, a correction factor "X" as a quadratic function of temperature and pressure is introduced, giving you increased freedom to optimize compensated calculation.
An analog output and instant flowrate (corrected for meter error and temperature) output are additional provisions.
With a model dedicated only to flow and pressure inputs, the instrument can also carry out calculations as a pressure compensator with fixed temperature value.
●By simple key operations or by inserting an IC card in the slot, parameters such as meter factor, temperature and pressure 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 pressure can be reviewed on command with the front panel keypad even during operation.
●A nonvolatile memory (E 2 PROM) retains all parameters and variables. Totalized value can be reset upon power depending on setting.
| Kinds | TEMPERATURE/PRESSURE COMPENSATED FLOW COMPUTER(GAS SERVICE) | ||
|---|---|---|---|
| Type | EL4121 | ||
| Power supply for combined flowmeter | 13.5, 24, 32 VDC (depends on combined flowmeter) | ||
| Display | Total flow (before and after correction), instantaneous mass flow (before and after correction), temperature, pressure, etc. | ||
| Input signal | Flowrate (pulse), temperature, pressure | ||
| Function | Scaler, frequency division setting, F/I conversion, instrumental error correction, temperature correction, pressure correction, communication | ||
| Output signal | Analog, pulse, alarm | ||
| Computation range | Temperature | –50 to +350°C (Span limited) | |
| Pressure | 0 to 3 MPa (Span limited) | ||
| Computing accuracy | Total flow after correction | ±0.2% RD or ±0.5%RD | |
| Temperature | ±0.1% of SPAN or ±0.3% of SPAN | ||
| Pressure | ±0.1% of SPAN | ||
| Ambient temperature | –10 to +50°C | ||
| Configuration | Non-explosionproof | ||
| Power supply | AC- or DC-powered | ||
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EL4121
