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Model EL4121 Flow Computer

Brand: Oval Corporation

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 temperature value fixed.
Features
  • Changing the meter factor, ranges of temperature, pressure, or other parameters, of the companion flowmeter is simple by keystrokes on the front-panel keypad, or by inserting an IC card into the slot
  • Built around a microprocessor, the instrument carries out calculations entirely in digital signal processing circuits to achieve a high degree of accuracy and reliability
  • Variables, such as temperature and pressure, can be reviewed on command with the front panel keypad, whether or not calculation is in progress
  • A nonvolatile memory (E2PROM) retains all parameters and variables. Variables are resettable following a power cycle or reset if so configured

Specifications

Accuracy

  • ± 0.1 % of Span
  • ± 0.2 % of Reading
  • ± 0.3 % of Span
  • ± 0.5 % of Reading

Ambient Temperature Range

  • -10° to 50° C (14° to 122° F)

Communication

  • RS-485

Consumption

  • 20 W, Max.

Power Supply

  • 20-30 Vdc
  • 85-264 Vac 50/60 Hz

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