Friedrich Leutert GmbH & Co. KG
MSI-3 Operating Instructions, Page 4
1
General Description
The Leutert Peak Pressure Indicator MSI-3 measures and displays maximum compression or ignition
pressures in individual cylinders of large two- or four-stroke engines. This engine indicator, sometimes
called Peak Pressure Gauge, may be used on ships Diesel or gas engines, generators, air compressors
and pumps or other hydraulic systems. The indicator is attached to an engine via an indicator valve.
The instrument is hallmarked by simple operation and a high degree of instrumental precision in
all speed ranges. Its sturdy design makes it immune to vibration, with extremely low maintenance
requirements.
The MSI-3 consists of a sturdy grip section and a solid stainless steel bottom part with connecting
nut and venting screw. A stainless steel pressure gauge, is mounted on top end of the bottom
part.
The bottom part also houses a shock absorber and a shutoff system. The shock absorber regulates
and stabilizes the buildup of pressure for the display unit. The shutoff system closes as soon as
the peak pressure is reached and, thus, enables a correct pressure reading.
The connecting nut enables the MSI-3 unit to be mounted on any indicator valve or cock with a
standard W27 x 1/10“ thread.
The venting screw may be actuated to reset the device to its zero position after the measuring
procedure has been completed.
Every single device is being tested and calibrated according to our ISO 9001 quality standards and
will be supplied with a calibration certificate proving the accuracy of the device.
Technical Specifications
Measuring ranges
0 to 160 bar, 0 to 250 bar, 0 to 300 bar
Engine range
up to 2,500 rpm
Permissible temperature
ambient -20 to 60°C
Error margin
± 1.6 %
Dimensions
210 mm x 155 mm x 60 mm
Weight
1.8 kg without wooden box, 3.0 kg with wooden box
Standard connection
W 27 x 1/10”
