415 Steam & Gas Flow Computer

Brand: Yokogawa Electric Corporation

The 415 Steam and Gas Flow computer incorporates a variety of compensation equations for gas and vapors. 

Inputs from a wide range of flowmeters are accepted, including vortex, turbine, orifice plate, averaging pitot tubes, wedges and target flowmeters. 

Also, where two differential pressure transmitters are used across an orifice or similar device, to increase the measured flow range, both DP transmitter inputs are accepted and scaled separately with automatic crossover.
Features
  • Displays mass flow, corrected volume and energy flow
  • Accepts 4-20mA and frequency flow inputs
  • Temperature and pressure compensation
  • Dual ranged DP transmitter inputs
  • Operates from 14-28V DC or AC mains
  • Simplified programming
  • Data logging output

Specifications

Accuracy

  • 0.05 % - 4-20 mA Inputs
  • 0.1° C (0.2° F) - RTD Input (Model 415R)
  • Better than 0.1 % - 4-20 mA Output Option

Adjustment

  • Sealed Membrane Keypad with 4 Keys

Approvals & Certifications

  • CSA
  • ETL (US)
  • UL 508

Communication

  • Baud Rate: 300 to 9,600
  • Data Length: 7-bits, 8-bits
  • Data Logging - Output Generated at Intervals of Once A Minute to Once Every 24 Hours

Current

  • Absolute Pressure is Programmable at 4 mA - Span
  • Gauge Pressure is Programmable at 20 mA - Span

Display

  • 2 Line x 20 Characters (5.5 mm High) Alphanumeric Backlit LCD

Duty Cycle

  • 49 Pulses/second, Max.

Electrical Rating

  • 250 Vac / 30 Vdc / 5 A / 250 VA - Relay Output Option

Environmental Protection

  • IP65
  • NEMA 4X

Frequency

  • 0.25 Hz on Rate, 0 Hz on Total - Min.
  • 10 kHz - Max.

Function

  • High & Low Flow Rate Alarms based on the Flow Rate in Mass, Corrected Volume or Energy
  • Outputs Flow Rate in Mass, Corrected Volume or Energy

Input

  • RTD

Input Impedance

  • 250 ohms - 4-20 mA Inputs

K-Factor

  • 0.1000 to 999,999

Load

  • 500 ohms, Max.
  • 950 ohms from External 24 Vdc

Measuring Range

  • psia: 0 to 10,000 (kPa: 0 to 100,000, bar: 0 to 1,000)

Media

  • Gas
  • Natural Gas
  • Steam

Operating Temperature

  • 0° to 55° C (32° to 131° F)

Output

  • 4-20 mA
  • Open Collector Transistor Will Sink 100 mA - Max.
  • Relay

Power Requirement

  • 110 Vac
  • 14-28 Vdc, 300 mA - Typical
  • 95-135 Vac

Pressure Range

  • psia: 0 to 10,000 (kPa: 0 to 100,000, bar: 0 to 1,000) - Ideal Gas, General Gas
  • psia: 1 to 10,000 (kPa: 1 to 100,000, bar: 0.01 to 1,000) - Steam
  • psia: 14.69 to 4,985 (kPa: 101,325 to 34,380, bar: 1.013 to 343.8) - Natural Gas

Pressure Type

  • Absolute
  • Gauge

Resistance

  • 250 ohms Resistors Connected to A Common Signal Ground (Current Sinking) - Circuit

Resolution

  • 10-bits - 4-20 mA Output Option

RTD Type

  • Pt100

Sensor, Probe Type

  • RTD

Supply Voltage

  • 8-24 Vdc Field Adjustable, 65 mA - Max.

Temperature Range

  • -100° to 200° C (-148° to 392° F) - RTD Input
  • 20° to 800° C (68° to 1,472° F) - Steam
  • -273° to 1,200° C (-459.4° to 2,192° F) - Measurement Range
  • -273° to 800° C (-450° to 1,472° F) - General Gas, Ideal Gas
  • -40° to 115° C (-40° to 240° F) - Natural Gas

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