SHOYO ENGINEERING CO.,LTD.

Marine measuring devices/Engine combustion pressure monitor/Shaft horsepower meter/Shaft thrust load meter

SHOYO ENGINEERING CO.,LTD.
Shaft horsepower meter
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Shaft horsepower meter
What is a shaft horsepower meter?
SE102C
SE102E
SE102EV
SE204E
SE202C
SE203C
SE308
SE18N/18H/18T
Detection unit for shaft thrust load
High-Precision Shaft Thrust Load Meter
Engine combustion pressure monitor
SHOYO ENGINEERING CO.,LTD.
2-2-16 NAKA FUKAYA, AYASE-CITY KANAGAWA JAPAN
Zip Code:252-1107
TEL:+81-467-70-3601 
FAX:+81-467-70-3605
http://www.shoyo-e.co.jp/

What is a shaft horsepower meter?

SEC shaft horsepower meter / SEC shaft thrust load meter
A shaft horsepower meter is an instrument designed to measure the horsepower delivered from the engine to the propeller on a vessel by measuring the torsion of the rotating shaft.


SEC shaft horsepower meter

Provides high-accuracy measurement using a just 70mm-long span of the shaft.
There is little shaft torsion in a 70mm-long span. Nonetheless, the SEC shaft horsepower meter ensures highly accurate detection with a high-sensitivity displacement sensor that has a minimum resolution of 0.07 microns.
Is compatible with any type of shaft with a diameter ranging from 50 mm to 1200 mm so long as the shaft is 200 mm long or more. The minimum diameter type of meter can be installed on a shaft 120 mm or longer.
Handles shaft revolutions of up to 2200 rpm (for minimum shaft diameter).
Is compatible with seven types of display units, as shown below. The meter is capable of not only measuring shaft horsepower, shaft revolution, and shaft torque, but also serving as a ship performance monitor through input of information such as the fuel oil flow and ship speed.
Can provide torsional oscillation monitoring with easy modification. Signals from the high-sensitivity displacement sensor are processed at high speed to provide instantaneous shaft torsion information. Peak vibrating stress is constantly on display.
Easily interfaces with our engine combustion pressure monitor, sharing the display with the monitor and saving a lot of system space.
SEC Shaft Horsepower Meter calculate SHP using the following formula.
SHP formula


SEC shaft thrust load meter

Uses a high-sensitivity sensor with a minimum resolution of 0.04 microns to detect minute compression strains on the shaft. The meter measures shaft thrust load extremely accurately by correcting shaft torsion based on torque data obtained from the SEC shaft horsepower meter.
Detection part
Detection part
SEC shaft horsepower meter
SEC shaft horsepower meter + SEC shaft thrust load meter
SEC shaft horsepower meter
SEC shaft horsepower meter +
SEC shaft thrust load meter
SEC torsion detecting sensor
SEC torsion detecting sensor

Features
High accuracy
±0.3% (when the shaft has a proper elastic coefficient)
Perfect reproducibility
The high-sensitivity displacement sensor retains semipermanent sensitivity characteristics.
Even after the detection part is re-installed, measuring accuracy is fully ensured.
High durability
The high-sensitivity displacement sensor, using an amorphous alloy for
its sensing element, displays extreme resistance to repeated stress.
Zero maintenance
The wireless signal from the sensor is completely free from the effects of
oil mist or other matter on the shaft circumference.
Light weight & compact size
The total weight of the detection part of 6.5 to 52 kg,
with an installation width of 100 to 200 mm.
Smooth installation
Can be installed in 6 to 10 hours even on an operating vessel.
Easy zero point check
The zero point can be obtained automatically as the turning device rotates
the shaft ahead and astern through 360 degrees.

SEC shaft horsepower meter

Shaft diameter
Type
φA
B
φC
50~70
SE107
160
170
170
71~100
SE110
200
190
200
101~150
SE115
260
220
260
151~200
SE120
334
391
364
201~250
SE125
378
413
408
251~300
SE130
424
436
454
301~350
SE135
472
460
502
351~400
SE140
520
484
550
401~450
SE145
568
508
598
451~500
SE150
618
533
648
501~550
SE155
668
558
698
551~600
SE160
718
583
748
601~650
SE165
768
608
798
651~700
SE170
818
633
848
701~750
SE175
868
658
898
751~800
SE180
918
683
948
801~850
SE185
968
708
998
851~900
SE190
1,018
733
1,048
901~950
SE195
1,068
758
1,098
951~1,000
SE1000
1,118
783
1,148
1,001~1,100
SE1100
1,240
844
1,270
1,101~1,200
SE1200
1,340
894
1,370


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