Digital Display Flow Meter for Liquids / Gases

7000/8000 with RW3 option

The digital display is a 2-wire loop powered flow meter with a built in wet/wet differential pressure sensor which provides a 4-20mA signal and scaled pulse output and large LCD display.

Version

  • Digital Display Flow Meter for Liquids / Gases - RW3

  • Digital Display Flow Meter for Liquids / Gases - RW3-1

  • Digital Display Flow Meter for Liquids / Gases - RW3-2

  • Digital Display Flow Meter for Liquids / Gases - RW3-3

  • Digital Display Flow Meter for Liquids / Gases - RW3-4

Description

Features and Benefits

  • Displays instantaneous flow rate, total and accumulated total
  • Large LCD 17mm (0.67”) and 8mm (0.31”) for flow rate and total
  • Measures 6:1 range with ± 3% F.S. accuracy
  • Scaled pulse output according to accumulated total
  • Liquid flow ranges from 4 GPH (15 l/h) in 1/2” flow meter to 3000 GPM (12000 l/m) in 8” flow meter.
  • Gas flow ranges from 40 SCFH (1 Nm³/h) in 1/2" flow meter to 20,000 SCFM (600Nm³/m) in 8” flow meter.

Applications

  • Power and Gas (Utility Industry)
  • Process Control for Liquids and Gases
  • O2 (Oxygen) Service Applications
  • Biodiesel Blending Process

Principle of Operation

The wet/wet pressure sensor detects the differential pressure created through the calculated flow nozzle. A scaled pulse output according to the accumulated total. Requires a 24Vdc supply not included (option PS-24).

Pipe size available

  • 7000 serie (threaded): 1/4" (8mm), 1/2" (15mm), 3/4" (20mm), 1” (25mm), 1 1/2" (40mm), 2” (50mm), 2 1/2" (65mm), 3” (80mm)
  • 8000 serie (wafer): 1/2" (15mm), 3/4" (20mm), 1” (25mm), 1 1/2" (40mm), 2” (50mm), 2 1/2" (65mm), 3” (80mm), 4” (100mm), 5” (125mm), 6” (150mm), 8” (200mm)

Electrical Specifications

Power Input

100mA, 24Vdc power supply 20-30 Vdc Input loop powered from 4-20mA signal. Voltage drop 2.6V max.

Display

High intensity reflective numeric and alpha numeric LCD, UV resistant.
User definable, 8 times / sec -30 secs.
Password Protected, 7 and 11-digit various symbols and measuring units

Signal Inputs

Full Scale Range 4-20mA DC Loop
Voltage Drop 2.6 Volts max at 20mA
Update Time 4 times / sec. Span 0.001 / 999,999 with available decimal position
16 Bit resolution error < 0.01mA / ± 0.05% F.S.
Low cutoff supplied to inhibit indication at low flow rates

Signal Outputs

The pulse output transmitting accumulated total
Type one passive transistor output (NPN) max 500Hz pulse length user definable between 1 msec up to 10 sec.

Additional information

Version

RW3, RW3-1, RW3-2, RW3-3, RW3-4

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