Thursday December 14 , 2017
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Built on Experience

Driven by Perfection

Engine Blow-By System

VF563 Series In--Line Flow Meters

The J-TEC in-line flow meters provide all the advantages of vortex shedding technology, in a design that is perfect for rugged applications with minimal space requirements.  The VF563 Series is the best value for your low-pressure gaseous flow applications.  This device is the meter of choice especially for the measurement of blow-by gases in engine testing applications.  Other vortex flow meters lack crucial sensitivity because they can only detect vortices created by large, restrictive obstructions. This diminishes important low-end performance.  The J-TEC design incorporates a small strut, which offers minimal flow restriction, for high accuracy over an extended range.  Each meter is individually calibrated to NIST traceable standards.  J-TEC flow meters have no moving parts, so they are rugged and trouble-free.


Minimal effect on engine performance during measurement, low pressure drop, drift free

performance, excellent at low flows (down to 0.14 ACFM), easy maintenance, 40:1 turndown ratio,

continuous flow readings, high accuracy, excellent repeatability.


Measured: Air or low pressure gas
Flow rate measured: 0.14 ACFM to 600 ACFM (0.24 to 1019 m3/hr)
Operating temperature:: 0° to 200°F (-18° to 93°C)
Operating pressure: -5 to 30 PSIG (-0.34 to 2.1 BARg)
Accuracy: +/- 2% full scale (1% of reading with FC911 Flow Computer)
Repeatability: +/- 0.5% of reading
Input power: +12 to +24 VDC at 35 mA
Outputs: 0 to 5 VDC, 0 to 3 VDC or Frequency
Construction: Anodized aluminum
Ambient temperature limits: -20° to 150°F (-28° to 66°C)
Pressure loss:: As low as 0.1” water column (2.54 mm)
Consult factory for actual pressure loss measurements
Pressure loss varies with flow rate
Response Time--Analog//Freq:300 ms analog/10 ms frequency
Connector: 5 pin

Beyond the Standard

If you do not see what you are looking for, contact us with your request. We have the expertise and flexibility to deliver a system to fit your exact testing requirements.

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“Custom is our Standard”.  No system is too complex for our Engineering team!