3
1. PREFACE
1.1 GENERAL
The PEM4 Propulsion Efficiency Monitoring system is a microprocessor based instrument for use with
the T-Sense
®
Optical Torque Measuring System and TT-Sense
®
Optical Thrust and Torque Measuring
System. The T-Sense
®
is providing torque, shaft speed and power as input for the PEM4 system. The
TT-Sense
®
additionally provides thrust measurements as input.
The PEM4 system is supplied with a robust SPU3 Signal Processing Unit, which can be connected to a
large number of extra inputs like flowmeters, GPS, speed log, or one additional T-Sense
®
or TT-Sense
®
in case of twin screw vessels.
This completely unique and compact total solution can be used for simple to very complicated
configurations.
To ensure safe and correct installation and operation, read this manual completely before
installing the equipment and starting operations.
The (micro) SD card should not be exposed to computer viruses, since this could
contaminate the (micro) SD card. Contamination could disturb good working of the system.
For any additional information contact:
Vierlinghstraat 24, 3316 EL Dordrecht
P.O. Box 40, NL-3300 AA Dordrecht
Or your local authorized VAF dealer.
Their addresses can be found on www.vaf.nl
1.2 SYMBOLS
The following symbols are used to call attention to specific types of information.
A warning to use caution! In some instances, personal injury or damage to the instrument
or control system may result if these instructions are not followed properly.
An explanation or information of interest.
1.3 COPYRIGHT
This Technical Manual is copyrighted with all rights reserved.
While every precaution has been taken in the preparation of this manual, no responsibility for errors or
omissions is assumed. Neither is any liability assumed for damages resulting from the use of the
information contained herein. Specifications can be changed without notice.
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