Ultrasonic Flow Meter - Nitto Seiko UAE

Nitto Seiko Ultrasonic Flow Meter

This is an ultrasonic flow meter of the clamp-on variety that can gauge liquid flow outside of a conduit.

This flow metre uses the propagation time difference method, whose ultrasonic propagation time differs depending on the rate of liquid flow in a pipe.

Due to the ability to measure from outside of a pipe, it is possible to measure various types of liquid without worrying about corrosion.

We have hand-held types that are appropriate for examining and inspecting the flow of various places in addition to wall-mount types that are stable for permanent standing.

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It is available for installing to the current pipe-line.
This can show installation
This is completely non-wetted type, and it does not influence from pressure and conductivity of measured
It is available for applying to small size piping by changing
This is easy operation with large ten-key
Small size and light weight hand held type makes convenience to
Hand held type has chargeable battery of which 10 hours

For transducer

Article	Contents
Measured liquid	Homogeneity liquid of which ultrasonic can propagate. (Water, Sea water, Industrial water, Acid, Alkali, Alcohol, etc)
Turbidity	10,000ppm or less
LiquidTemp.	-30～+90℃ (Same as ambient Temp. of transducer)
Nominal size	15～600mm (HS0：15～100mm, HM0：50～600mm)
Material of pipe and lining	Pipe shall be penetrated material by ultrasonic such as Copper, Stainless, PVC, Ductile iron. Lining must adhere to original pipe. (Lining material: Tar-epoxy, Mortar, Rubber, etc.)
Flow rate range	0～±10m/s
Nos. of traverse line	1 line
Method	Propagation time difference by ultrasonic pulse
Accuracy （Calibrated accuracy at factory）	±2.0% of indicated value (In case of less than 2m/s of flow rate, accuracy is ±0.04m/s) Note) It is required the pipe filled with liquid, and ideal velocity distribution. Note) It is required longer straight pipe than specified.
Protection level	IP67
Length of code	5m as standard. (Please inquiry in case more length is required)

For transmitter

Article	Contents
Component	Wall mount type		Hand held type
Power	For AC： 100～220V AC±10% 50/60Hz For DC： 24V DC±10%		100～220V AC±10% 50/60Hz 10 Hrs operation is available at full charge.
Power consumption	1.5W or less		2W or less
Ambient Temp.	-10～+60℃ （Humidity 85% or less）
Atomosphere	Avoid direct sunshine, radiant heat, corrosive environment, and explosive atomosphere
Analog output	Kind of signal	4～20mADC
	Converted Precision	0.1%
	Arrowable load resistance	750Ω以下
Open collector output	Setting frequency	1～9,999Hz
	Current-V oltage	DC80Ｖ、100mA or less
	Voltage at ON	1V or less
Relay output	"Without", "Excessive flow", "Back flow alarm" etc.
Communication	RS485 serial port		RS232C serial port
Indication	LCD (20 digits × 2 line), back light Momentary flow rate, integrated flow volume, etc		LCD (16 digits × 4 line), back light Momentary flow rate, integrated flow volume, etc
Protection level	IP65

TR1：Transducer at upper stream TR2：Transducer at down stream θ ：Incidence angle of sensor

V ：Flow speed in a pipe

Ｖ1 ：Ultrasonic propagation speed (Upper stream to downstream)

Ｖ2 ：Ultrasonic propagation speed (Downstream to upper stream)

C ：Sonic speed in a liquid

When install ultrasonic generator as above picture, ultrasonic from up-stream to down-stream is faster propagation than
its of down-stream to up-stream. This time difference is direct proportion to flow rate. Volumetric flow rate is calculated
by cross sectional area of pipe.

(Note) This is calibrated by manufacture’s factory inspection facility before delivery.

Please use calibration function if you find instrumental error due to operating environment.

Note) Pipe line shall be filled by liquid, and flow rate shall be ideal distribution.

Flow rate conversion table

Piping example/ Material: SGP Liquid: Water Value: Unit m3/H

Nominal Size	Internal diameter	Flow Rate (m/s)
A	mm	1	2	3	4	5	6	7	8	9	10
15	16.1	0.7	1.5	2.2	2.9	3.7	4.4	5.1	5.9	6.6	7.3
20	21.6	1.3	2.6	4.0	5.3	6.6	7.9	9.2	10.6	11.9	13.2
25	27.6	2.2	4.3	6.5	8.6	10.8	12.9	15.1	17.2	19.4	21.5
32	35.7	3.6	7.2	10.8	14.4	18.0	21.6	25.2	28.8	32.4	36.0
40	41.6	4.9	9.8	14.7	19.6	24.5	29.4	34.3	39.1	44.0	48.9
50	52.9	7.9	15.8	23.7	31.6	39.6	47.5	55.4	63.3	71.2	79.1
65	67.9	13.0	26.1	39.1	52.1	65.2	78.2	91.2	104.3	117.3	130.4
80	80.7	18.4	36.8	55.2	73.7	92.1	110.5	128.9	147.3	165.7	184.1
100	105.3	31.4	62.7	94.1	125.4	156.8	188.1	219.5	250.8	282.2	313.5
125	130.8	48.4	96.7	145.1	193.5	241.9	290.2	338.6	387.0	435.4	483.7
150	155.2	68.1	136.2	204.3	272.4	340.5	408.6	476.7	544.8	612.9	681.0
200	204.7	118.5	237.0	355.4	473.9	592.4	710.9	829.3	947.8	1066.3	1184.8
250	254.2	182.7	365.4	548.1	730.8	913.5	1096.2	1278.9	1461.6	1644.3	1827.0
300	304.7	262.5	525.0	787.5	1050.0	1312.5	1575.0	1837.5	2100.0	2362.5	2625.0
350	339.8	326.5	652.9	979.4	1305.9	1632.3	1958.8	2285.3	2611.7	2938.2	3264.7
400	390.6	431.4	862.8	1294.1	1725.5	2156.9	2588.3	3019.6	3451.0	3882.4	4313.8
450	441.4	550.9	1101.8	1652.6	2203.5	2754.4	3305.3	3856.2	4407.0	4957.9	5508.8
500	492.2	685.0	1370.0	2054.9	2739.9	3424.9	4109.9	4794.8	5479.8	6164.8	6849.8

（1）Please select suitable installation method for piping condition in order to measure correctly. Please select from V
method, Z method and W method as below.
※ Extension rail as an option is required for Z method.

(2) Straight piping portion is required at before and after transducer. Please refer to below.

（3）Ambient temperature shall not exceed specification temperature. Less thermal variation is preferable.
（4）Please install to the pipe less obstacle of ultrasonic such as rust or scale. In case of impossibility, please set obstacle
as a liner, and measurement accuracy is equivalent of specification. However, please clean a pipe as possible.
（5）Space between pipe and liner makes difficulty of measurement because of less propagation of ultrasonic.

（6）Please select the place where pipe is filled by liquid while liquid does not flow. And also, please avoid to install the
place where may appear air bubbles.
（7）Please avoid to install sensor at right above and right under of the pipe in order to avoid air pocket and sediments.
Sensor shall be installed side within 90 degree angle from horizontal. And also, please avoid installation at a joint of flange or welded part of pipe.

(8) Please apply acoustic coupler to sensor when install transducer. When apply the acoustic coupler, please be careful not to include air.

Model	Code			Specification
NU2				Ultrasonic flow meter
Type	000			Clump-on type
Transmitter		SW		Wall mount
Transmitter		HD		Hand held
Transducer			HSO HMO	For pipe size: 15～ 100mm For pipe size: 50～ 600mm