In-Line Blow-By Flow Meter | VF563

At a Glance

Description

Applied Measurements are a UK-approved distributor for J-TEC flow meters.

The in-line blow-by flow meter VF563 monitors the air flow rate of blow-by gases and is attached to the crankcase vent in crankcase ventilation systems. It is specifically designed to measure crankcase blow-by and delivers an analogue or frequency output to your dynamometer.

Monitoring crankcase blow-by can determine if there are any piston ring failures or leaks. The VF563 blow-by meter measures precisely how much blowby is happening inside the engine.

The J-Tec Meter has very little pressure drop, there’s almost no restriction to the flow so you’re not inducing backpressure on the crankcase in order to get the measurement.

Kevin Donahue of J-Tec Associates, https://youtu.be/niCS7a0PqSs

The flow meter delivers a 0-5V output which is compatible with most engine dynamometers.

It is very simple to use. Simply connect a hose to the in-line of the flow meter that’s connected to the crankcase vent. You can now measure in real-time how much piston ring leakage you have, instead of using old methods like leak down test or compression test. Plus, it allows you to measure the crankcase blow-by through the full operating range of the engine.

Its design incorporates a small strut that offers minimal flow restriction ensuring high accuracy over extended ranges.

The VF563 flow meter has no moving parts meaning they’re trouble-free making them very easy to maintain.

Various inlet and outlet diameters are available depending on the size of your engine. From a small 3/8 Inch (9.5mm) up to a huge 4-inch (101.6mm).

We can also offer a blow-by canister to use with the in-line flow meter that helps to minimise the effect of engine pulsations and collects oil and mist.

Applied Measurements are a UK-approved distributor for J-TEC flow meters.

Watch the below video for an in-depth description from Kevin Donahue of J-Tec Associates describing the VF563 blow-by flow meter.

Technical Specifications

Product Dimensions

Model	VF563AA	VF563A	VF563B	VF563J	VF563K	VF563C	VF563F
Line Size ID Inches (mm)	3/8 (9.5)	1/2 (12.7)	5/8 (15.9)	3/4 (19.05)	1 (25.4)	1-3/8 (34.9)	2 (50.8)
Range ACFM	0.14 to 5	0.25 to 10	0.4 to 16	0.7 to 27	1 to 50	2 to 80	5 to 200
Range LPM	4 to 141	7 to 283	11.3 to 453	20 to 765	28 to 1416	56 to 2265	141 to 5663
Range m3/Hr	0.24 to 8.5	0.42 to 17	.7 to 27	1.2 to 46	1.7 to 85	3.4 to 136	8.5 to 340
Range CFH	8.4 to 300	15 to 600	24 to 960	42 to 1620	60 to 3000	120 to 4800	300 to 12000
ACFM = Actual Cubic Feet per Minute LPM = Liters Per Minute m3/Hr = Cubic Meters per Hour CFH = Cubic Feet per Hour

MODEL		A	B	C	D	E	G	H	I.D.	O.D.
VF563AA	Inches	1.22	3.84	2.5	6	3.44	1.88	1.25	0.38	0.5
	mm	30.99	97.54	63.5	152.4	87.38	47.75	31.75	9.65	12.7
VF563A	Inches	1.22	3.84	2.5	8	3.44	1.88	1.25	0.5	0.63
	mm	30.99	97.54	63.5	203.2	87.38	47.75	31.75	12.7	16
VF563B	Inches	1.22	3.84	2.5	8	3.57	1.88	1.25	0.63	0.75
	mm	30.99	97.54	63.5	203.2	90.68	47.75	31.75	16	19.05
VF563J	Inches	1.13	3.85	2.59	8	3.68	1.9	1.25	0.75	0.875
	mm	28.7	98	65.8	203	93.5	48.3	31.75	19	22.2
VF563K	Inches	1.13	3.85	2.5	8	3.95	1.9	1.25	1	1.125
	mm	28.7	98	63.5	203	100	48.3	31.75	25	28.5
VF563C	Inches	1.72	3.84	3	12	4.34	1.88	1.25	1.37	1.5
	mm	43.69	97.54	76.2	304.8	110.24	47.75	31.75	34.8	38.1

v26.07.2023

Ordering Codes & Options

VH653AA (example code)	VH563	AA
Product Family
Flow Meter	VH563
Line Size in In. (mm)
3/8 (9.5)		AA
1/2 (12.7)		A
5/8 (15.9)		B
1-3/8 (34.9)		C
3/4 (19.05)		J
1 (25.4)		K
2 (50.8)		F