Features of the IR-Opflow Flow Meter...A Masterpiece of Technology

 
 

 

The new IR-Opflow Flow Metering Series

Offered by Crabtree & Associates

480-947-9003

   
Features of the IR-Opflow:

IR-Opflow
  • Manufactured in PVDF (polyvinylidene fluoride)
  • Measuring range: 0.1-120 L/min. (depending on the model chosen)
  • Accuracy: ± 1% or ± 3% of the measured value (depending on the series selected)
  • Repeatability:  ± 0.1% of the measured value
  • Patented design and lightweight rotor provide friction free rotational movement and minimize wear
  • Easily mounts in any position
  • No flow corrections required
       

The Operating Principal of the IR-Opflow Sensor:
 
The IR-Opflow Sensor is a volumetric flow meter.  The sensor consists of the following components:
  • a sensor housing which includes:
    • a patented flow corrector with a screw shaped interior (1)
    • a lightweight rotor with three blades  (2)
    • and a optoelectric infrared detector (3) with integrated preamplifier

IR-Opflow Sensor
During the process, the incoming liquid is forced into a twisting motion by the spiraling surfaces of the inflow section.  The flow of liquid causes the rotor to rotate virtually free of friction.  This provides a large measurement range and causes minimum wear.  Each time they rotate, the blades of the rotor interrupt the beam of infrared light.  This generates a series of pulses with which the flow can be measured extremely accurately.

As an example, the smallest IR-Opflow meter generates 36,000 pulses per 1,000 cc.  The built-in signal amplifier provides a square wave pulse output.

The IR-Opflow Sensor is also available without a signal amplifier.  The flowmeter in this version has a sinusoidal output signal.  The patented turbine design prevents air or gas bubbles from becoming trapped in the measuring chamber.  This is essential to the IR-Opflow flow meter's exceptional accuracy.   The precision of the IR-Opflow within the measuring range is not influenced by either pressure differences or varying or pulsating liquid flows.
 

Download the IR-Opflow Data Sheet (pdf)

     
Specifications of the IR-Opflow:
Technical Specifications
Accuracy 10 Series: ± 1% of meas. value
30 Series: ± 3% of meas. value
Repeatability: ± 0.1% of measured value
Linearity: ± 1% or ± 3% of measured value
Measurement Range: See Table 1
Temperature Range: -40 to 185º F (-40 to 85º C)
Maximum Pressure: 150 PSIG (10 bar)
Process connection: BSP, NPT or flexible hose fitting
Materials: All wetted parts are manufactured from PVDF

 
Electrical Specifications
Power Supply: 5-12 or 8-24VDC, 6 - 33mA
Pulse Output: Open collector
Maximum Load: 500 Ohms
Frequency: 15 - 1200 Hz, see Table 1
Signal Generation: Optoelectronic (infrared)
Signal Cable: 39 inches; other lengths on request
   
Table 1
   
Type Flow Range in GPM (LPM) K-factor <5CTKS pulses/Litre Output (Hz)
1 0.03-0.53 (0.1-2.0) 36000 60-1200
2 0.08-2.38 (0.3-9.0) 8000 40-1200
3 0.13-3.96 (0.5-15.0) 3200 26.66-800
4 0.26-7.93 (1.0-30.0) 200 20-600
5 0.66-19.8 (2.5-75.0) 450 18.75-562
6 1.06-32 (4.0-120.0) 225 15-450
 
We would be pleased to fax you a brochure for this unique, accurate and low-cost meter so you can see all of the options, ranges and fittings. Just e-mail us with your request or call 480/947-9003, or fax us at 480/947-9638. We'll be glad to respond to your request promptly.

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