Digital Pressure Indicator DPI

Transcription

1 SIMPLE HANDLING NO NEED FOR INSTALLATION Digital Pressure Indicator DPI Cylinder Pressure Monitoring The Digital Pressure Indicator DPI measures dynamic pressures. It is especially designed to analyze large two and four stroke Diesel engines.

2 Description The electronic pressure indicator DPI, also known as Pressure Measuring Instrument (PMI System), is designed to measure dynamic cylinder pressures of large two- and four-stroke Diesel and gas engines. It is a state-of-the-art MIP-system with a very convincing price-performance ratio. The high accuracy data collected by the DPI is essential for optimizing engines performance and reducing emissions. The self-explanatory handling of the Leutert PMI allows even unexperienced operators to take successful measurements in few minutes. The following values can be monitored by using the DPI: Power/MIP calculation P-Max PV-plot P-comp DP (Derivative plot) RPM The included software allows evaluation transmitting (to superintendency), archiving, and much more with only a few clicks. Besides, the software offers the possibility for easy data sharing by , by simply pressing only one button. The DPI is the most straightforward solution to reach optimum performance of your engine. Measuring process The pressure sensor is temporarily connected to the indicator valve (Thompson connection). Once the measuring series is being recorded, the some basic data can be read off the LC display of the handheld unit. Afterwards, the data sets are saved to the internal memory and can be immediately transferred to any computer via USB Plug n Play connection for further evaluation/reporting. Features No need to install TDC sensors on the engine for power calculation Easy handling and Plug n Play installation of the soft- and hardware results in less user related problems Excellent price-performance ratio No copy limitations of the software Usage of standard AA rechargeable batteries (can easily be replaced by the user) Continuous operation of more than 6 hours High accuracy Usage of a high quality sensor Hand-held data acquisition unit The battery powered hand-held unit is designed for a periodic monitoring of cylinder pressure, and provides important data for engine diagnostics and condition monitoring directly at the point of use. The electronic components of the portable DPI handheld are incorporated in a tough ABS resin (plastic) water resistant body. The figure below shows the hand-held data acquisition unit. 4-pin connector for pressure sensor LC display with background illumination, 4 x 20 alphanumeric characters for displaying the measuring data and menu texts LEDs for indication of battery status and measurement activity ON/OFF switch Operating keys ABS resin case Hand-held data acquisition unit 2 Digital Pressure Indicator DPI

3 Pressure sensor The heart of the instrument is the pressure sensor. Using the latest technology its accuracy and lifetime are setting the standard. The type of quartz sensor used for the DPI has passed trials of 16,000 hours non-stop operation and is accepted world wide by all engine manufacturers. Furthermore the sensor has a calibration interval of approx. 8,000 hours. The DPI system includes the pressure sensor displayed in the figure above which serves to determine the cylinder pressure in diesel and gas engines. It is characterized by a high level of precision and rugged design. The pressure sensor is connected to the DPI hand-held by an armoured cable and plug. Pressure sensor Analyzing software The simple, self-explanatory, and sophisticated software is saved on the internal memory of each handheld unit and has no copy limitations. This means that it is not necessary to purchase a second or even more licences for the computer(s) in the Engine Control Room and/or superintendents office. Once you connect the handheld unit to the computer by USB Plug n Play, the software will automatically recognize the new measuring files for importing to the software. There is no need to install any drivers. After the new files have been imported there are different visualization modes available (pressure plot, pv plot, bar graphs, summarizing data info) which allow easy evaluation of the measuring data. The imported data can easily being exported and send by for evaluation or storage by just one click. Future firmware and software updates are free of charge and can be done by the operator by simply copying one file. Screenshots of the DPI software Digital Pressure Indicator DPI 3

4 Technical specifications Pressure range : 0 to 250 bar Engine range : 50 to 5,000 rpm Accuracy : < 0.5% A/D sampling precision : 16 bit ( bar/sample) Memory capacity : 50 engines, 24 cylinders each Manual available in English, Russian, Mandarin, and Spanish Battery type : Standard AA (4 pcs.), rechargeable Battery capacity : > 6 hrs Battery charging : via USB or adapter Display : 20 x 4 alphanumeric characters backlight, high contrast Standard connection : W 27 x 1/10 Operating temperature range Hand-held unit : 0 to 55 C Pressure sensor : 0 to 350 C DPI protective cover (optional) Dimensions Hand-held unit : 211 x 100 (81) x 45 (26) mm Pressure sensor : Ø = 60 mm, L = 210 mm Weight Hand-held unit : 380 g Pressure sensor : 830 g Indicator / Features DPI DPI-2 Type 50 MSI-3 Automatic power/mip calculation with CAE 2 Software based power/mip calculation without CAE 1) 2 2) 2 2) 2 3) Analyzing Software 2 2 Electronic data transfer and sharing 2 2 P-Max PV-Plot P-comp DP (Derivative plot) 2 2 RPM 2 2 Suitable for 2- and 4-stroke engines ) 2 1) Less accurate than using calculation with CAE sensor 2) After manual TDC correction in the software 3) Using Planimeter with manual calculation, and engines fitted with an indicator drum drive 4) Choose correct indicator type according to RPM range Subject to change without notice. Issued 11/2016 MADE IN GERMANY 4 Digital Pressure Indicator DPI

5 Peak Pressure Indicator MSI-3 Cylinder Pressure Monitoring The MSI-3 peak pressure engine indicator is designed for displaying the maximum value of gas pressures which are subject to constant and rapid variations. The device is particularly suitable for applicational tasks on Diesel engines.

6 Description The MSI-3 peak pressure engine indicator is designed for displaying the maximum value of gas pressures which are subject to constant and rapid variations. The device is particularly suitable for applicational tasks on Diesel engines. Features Measuring range up to 250 bar Easy handling High accuracy in all speed ranges Extremely robust, low maintenance Insensitive to vibration Steel-manometer in safety construction Light-weight Technical specifications Measuring ranges : bar, bar Error margin : ± 1.6 % Engine range : up to n = 2,500 rpm 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 Standard accessories MSI-3 complete in wooden box 1 wooden box with handle and two hinges 1 hollow spanner - connecting nut 1 test protocol 1 operating instructions Subject to change without notice. Issued 06/2015 MADE IN GERMANY 2 Peak Pressure Indicator MSI-3

7 EASY INSTALLATION, OPERATION & CALIBRATION ROBUST DESIGN & OUTSTANDING DURABILITY Torque Measuring System TORXmeter Shaft Power Measurement The Leutert Torque Measuring System TORXmeter is a system for continuous shaft power measurements and provides vital data for efficiency improvement and prevention of downtime.

8 Description The TORXmeter is a permanent shaft power measuring system basically designed for seagoing vessels, but may be used also for other engine-driven applications. The provided data is vital for evaluating engine performance in relation to the power consumption (burning of fuel), thus helps to improve engine efficiency and to reduce fuel costs. The TORXmeter is easy to install and requires no electronic/electric parts on the shaft. Only two magnetic sensor belts in a distance of 1.5 to 2 m have to be installed on the shaft and works contact free. This makes the system rugged and more durable than other comparable systems. The simple installation and calibration makes presence of a service technician unnecessary and is usually done by the vessel s crew. Screen Displays of the Terminal Box The complete setup can be done at the terminal box. The touch-screen of the terminal box can be operated intuitively and offers various information at a glance. Measurement screen The intuitive interface of the terminal box allows easy operation, permanent display, and automatic reports of following values: Torque (knm) Shaft power (kwh) Shaft speed (RPM) Data transmission to vessel s automation system can be easily done via 4-20mA outputs. Daily report Installation of several repeater displays (engine control room, bridge) is possible. Propeller curve 2 Torque Measuring System TORXmeter

9 Installation Examples TORXmeter overview (Scope of supply) 1) Terminal box, wall or console mounted version 2) MWE box 3) 2 sets of bracket and holders for EXFR sensors 4) 2 pcs. EXFR sensors, depending on shaft diameter 5) 2 pcs. sensor belts, depending on shaft diameter 6) Pre-wired cable between MWE box and EXFR sensors (approx. 3.7 m) Torque Measuring System TORXmeter 3

10 Technical specifications Power supply : 100/240 VAC, 50/60Hz, 16 A Temperature range : Terminal box and MWE box 0 to 60 C EXFR sensors and belts -40 to 85 C Shaft diameter : 250 to 1,000 mm; < 250 mm on request Sensor measuring accuracy : < 0.1 % FS Speed range : up to 250 rpm; > 250 rpm on request Torque/RPM measurement : high-resolution sensor, contact-free Performance data output : 3 x 4 to 20 ma signals for torque, shaft power, shaft speed Interface : RS485 (NMEA 183) Alarm outputs : Engine overload, system error (potential free contacts) Protection class : Terminal box and MWE box IP54 EXFR sensors and belts IP67 Firmware update : via USB stick (update file can be sent via ) Display : Illuminated touch screen Optional equipment : Repeater display for ECR or bridge installation Subject to change without notice. Issued 11/2016 MADE IN GERMANY 4 Torque Measuring System TORXmeter

11 Crankshaft Alignment The Leutert Deflection Indicator allows easy and fast measurement of crankshaft deflection and cylinder liner ovality. Deflection Indicator

12 Deflection Measurement Most engineers are familiar with the importance of regular checks on Diesel engine crankshafts and cylinder liner. The old dial gauge for crankshaft alignment checks were time-consuming, unpleasant, dirty and gave uncertain accuracy. By using Leutert s electronic Deflection Indicator DI-5 series the task will be much easier and the accuracy will be improved. As an option to the instrument you can connect the ovality kit to check the cylinder liner ovality and wear comparison. The Deflection Indicator DI-5 series has been used by large numbers of engineers in over 90 countries worldwide. Our customers are Diesel engine manufacturers who equip their engines with an instrument for the service program, service companies and ship-ping companies. Crankshaft Measurement Four push buttons on the DI-5C panel are used to select, change and accept values on the display such as temperature, engine number, number of cylinders, measurement direction and so on. Just push the OK button to store the value. On completion of the first cylinder, move the transducer to the next cylinder and store measurement values. The generous measurement range allows the transducer to be moved between cylinders without mechanical adjustment. When all cylinders are completed hard copy can be downloaded to a PC for reference and future comparisons. Features A pleasant and clean operation comparing to use the old dial gauge. Download measurements to your computer to store, track, print and compare your engine wear. Measure deflections at the extreme precision of mm Rechargeable battery operated for portable use Large measuring distance 60 to 574 mm (with different kind of transducers). USB connection to PC 2 Deflection Indicator

13 Ovality Kit The ovality kit is designed principally to measure cylinder liner wear and ovality. However, the device can be modified to take measurements from various applications according to your own requirements. The standard kit contains equipment to measure cylinder liners with diameters of 180 to 600 mm. The supplied software with the deflection indicator DI-5C also handles the measurements taken with the ovality kit. By this, you can transfer ovality data to your PC and evaluate and compare, all with graphs and printouts. Analyzing Software The DI-5C will download your measured data to a PC using standard USB interface. The software is compatible with Windows up to version Windows 8, 32/64 bit. Connecting cable, user information and program disc are supplied with the instrument. Deflection Indicator 3

14 Technical specifications Storage & transfer to PC : DI-5 no; DI-5C yes Measuring distance : 89 to 565 mm (a smaller transducer is optional equipment) Measuring range : ± 2,048 mm Resolution : mm Zero balance range : ± 2,048 mm Zero drift : mm / 5 minutes Instrument operating range : 0 C to 55 C (32 F to 130 F) Transducer operating range 0 C to 80 C (32 F to 175 F) Battery : 3.6 V Lithium Ion, rechargeable Battery life : 10 hours / charge, shelf life 5 years Extension bars (invar alloy) : 10, 20, 40, 80 and 2 x 160 mm Cable length : 7 m Gross weight : 4 kg Dimensions Instrument : 190 mm x 167 mm x 50 mm Transducer : Ø 31 mm x 81 mm Case : 300 mm x 280 mm x 140 mm Subject to change without notice. Issued 06/ Deflection Indicator

15 Engine Indicator Type 50 System Maihak Cylinder Pressure Monitoring The mechanical pressure indicator type 50 measures dynamic pressures. It is especially designed to analyze large two stroke Diesel engines.

16 Description Leutert engine indicators are used on diesel engines, gas engines, air compressors, pumps, etc. A metal stylus draws a clear pressure-path diagram which records the pressure curve within the engine cylinders as influenced by the piston stroke. The recording drum can be moved by means of a string, which is pulled manually or by the engine. If the drum is driven by the engine, the diagram may be planimetered. Our indicators are designed to cover various ranges of speed and rates of pressure-change. It will always be advisable to operate with small diagrams as far as possible, in consideration of the oscillating masses. In doubtful cases it is suggested to forward particulars of the operating conditions, and on orders to give particulars regarding kind of engine, pressures to be measured, engine stroke and r.p.m. The selection of the correct indicator size depends not only on the r.p.m but also on the rate of pressure rise at time unit dp/dt. If the above stated limit values are exceeded, the resulting acceleration would cause too high an indication of pressure. Size of piston and spring are selected such that the maximum natural frequency is attained. With regard to the accelerations, for best results the diagram length should be progressively reduced as the r.p.m. approaches the designed maximum of the indicator. Features Individually calibrated high accuracy heat treated springs Unchanged, rugged and proven reliable Maihak design Easy and simple operation by unskilled operator Cheapest way to analyze your engine Ready-to-use equipment Technical specifications Measuring range : see spring table below Engine range : up to n = 300 rpm or max. dp/dt = 9 x 10³ bar/sec Max. diagram : 50 mm/80 mm (height/length) Drum diameter : 50 mm Paper size : 180 mm x 65 mm Dimensions : 165 mm x 130 mm x 90 mm Weight : 1.5 kg (without wooden box) 4.4 kg (with wooden box) Standard connection : W 27 x 1/10 Standard accessories 1 wooden box, 1 spring, 1 measuring scale, 1 block indicator paper each 40 sheets, 1 cord tightening hook, 1 oil can for piston and links, 1 screw driver, 1 hollow spanner, 1 cylinder cleaner, 1 stand for instrument, 1 tube incl. 5 recording pencils, 1 operating instructions Table of Indicator Springs Type 50 Piston Scale Max. Pressure Spring-No. Part-No. 1/ mm/bar 140 bar 50 / 14 bar / mm/bar 160 bar 50 / 16 bar / mm/bar 200 bar 50 / 20 bar / mm/bar 250 bar 50 / 25 bar / mm/bar 300 bar 50 / 30 bar Type 50 complete in wooden box Piston diameter 6.41 mm Subject to change without notice. Issued 08/2016 MADE IN GERMANY 2 Engine Indicator Type 50

17 Cylinder Pressure Monitoring Indicator valves are used for the connection of mechanical engine indicators and digital pressure indicators with Diesel engines. Indicator Valve

18 Technical specifications Max. working pressure : 300 bar Max. working temp. : 600 C Max. spindel stroke : approx.2.5 mm = 2 turns of handwheel Weight : approx. 0.6 kg Design steel housing heat treated tensile strength over 1,000 N/mm² valve cone stainless steel handwheel design is user-friendly Connections Connection - engine end (A) M 20 M 20 x 1.5 1/2 NPT R 1/2 R 3/4 3/4 WH other dimensions on request Connection - indicator end suitable for all mechanical and digital engine indicators with standardized thread W 27 x 1/10. The prestressed spring action of the axially movable valve cone ensures excellent sealing on hot and cold engines. On request the indicator valve can be supplied with a protective cap, corresponding to DIN Dimensions 2) Indicator valve with hexagon nut SW 17 1) Indicator valve compl. with handwheel 3) Option: Handwheel, single for hexagon nut SW17 Subject to change without notice. Issued 06/2015 MADE IN GERMANY 2 Indicator Valve

19 Engine Indicator Type 30 System Maihak Cylinder Pressure Monitoring The mechanical pressure indicator type 30 measures dynamic pressures. It is especially designed to analyze large two and four stroke Diesel engines.

20 Description Leutert engine indicators are used on diesel engines, gas engines, air compressors, pumps, etc. A metal stylus draws a clear pressure-path diagram which records the pressure curve within the engine cylinders as influenced by the piston stroke. The recording drum can be moved by means of a string, which is pulled manually or by the engine. If the drum is driven by the engine, the diagram may be planimetered. Our indicators are designed to cover various ranges of speed and rates of pressure-change. It will always be advisable to operate with small diagrams as far as possible, in consideration of the oscillating masses. In doubtful cases it is suggested to forward particulars of the operating conditions, and on orders to give particulars regarding kind of engine, pressures to be measured, engine stroke and r.p.m. The selection of the correct indicator size depends not only on the r.p.m but also on the rate of pressure rise at time unit dp/dt. If the above stated limit values are exceeded, the resulting acceleration would cause too high an indication of pressure. Size of piston and spring are selected such that the maximum natural frequency is attained. With regard to the accelerations, for best results the diagram length should be progressively reduced as the r.p.m. approaches the designed maximum of the indicator. Features Individually calibrated high accuracy heat treated springs Unchanged, rugged and proven reliable Maihak design Easy and simple operation by unskilled operator Cheapest way to analyze your engine Ready-to-use equipment Technical specifications Measuring range : see spring table below Engine range : up to n = 1,000 rpm or max. dp/dt = 18 x 10³ bar/sec Max. diagram : 30 mm/60 mm (height/length) Drum diameter : 40 mm Paper size : 145 mm x 45 mm Dimensions : 120 mm x 105 mm x 85 mm Weight : 1.1 kg without wooden box 4.0 kg with wooden box Standard connection : W 27 x 1/10 Standard accessories 1 wooden box, 1 spring, 1 measuring scale, 1 block indicator paper each 40 sheets, 1 cord tightening hook, 1 oil can for piston and links, 1 screw driver, 1 flat plier, 1 hollow spanner, 1 cylinder cleaner, 1 stand for instrument, 1 bundle indicator cord, 1 tube incl. 5 recording pencils, 1 vacuum washer, 1 operating instructions Table of Indicator Springs Type 30 Piston Scale Max. Pressure Spring-No. Part-No. 1/ mm/bar 150 bar 30 / 30 bar / mm/bar 200 bar 30 / 40 bar / mm/bar 250 bar 30 / 50 bar Type 30 complete in wooden box Piston diameter 9.06 mm Subject to change without notice. Issued 06/2015 MADE IN GERMANY 2 Engine Indicator Type 30

21 Digital Pressure Indicator DPI-2 Cylinder Pressure Monitoring The Digital Pressure Indicator DPI-2 measures dynamic pressures. It is especially designed to analyze large two and for stroke Diesel and gas engines.

22 Description The Digital Pressure Indicator DPI-2 measures dynamic pressures. It is especially designed to analyze large two and four stroke Diesel and gas engines. The main application area is the marine market and mobile and stationary power stations. The DPI-2 is a powerful and easy-to-use high quality electronic engine indicator which can be characterized by its long life components. It provides the following essential engine values for analysis: Indicated power Mean indicated pressure (mip) Peak pressure (Pmax) Minimum peak pressure (Pmin) Average peak pressure (Pav) Standard deviation of peak pressure (Sdev) PV-plot Compression pressure (P-comp) Maximum gradient of pressure curve (dp/da) Speed (rpm) Features Menu controlled operation Sufficient memory to analyze up to 32 cylinders Measurement and display of cylinder pressure in individual cycles or in up to 16 cycles on average Storage of motor and measurement parameters Selection of various filters High sensitivity through 12-bit A/D converter Real time clock Integrated rechargeable batteries Interface for PC (RS 232, adapter for USB) Hand-held Data Acquisition Unit The electronic components of the portable DPI handheld are incorporated in a tough aluminium water resistant body. The figure below shows the hand-held data acquisition unit. Connectors and charging level LED The measuring method of the DPI-2 is fast and simple: The pressure sensor is temporarily connected to the indicator valve (connection W27 x 1/10 ). While the measuring series is being recorded, the data can be read off the LC display. After that, the data sets are saved to memory and can be transferred to the PC. The data may be evaluated and administered with the DPI software. LC display with background illumination, 4 x 16 characters for displaying the measuring data and menu texts 4 operating keys The DPI system works independently of the mains voltage. It uses its own integrated power supply. LED for indication of the low charge of battery An optional TDC sensor (4-stroke engine) relates the pressure curve to the crankshaft position. By using the crank angle encoder or incremental encoder on a 2-stroke engine the pressure values are measured in relation to the actual crankshaft angle. Hand-held data acquisition unit Aluminum body All systems can be supplied as permanent installation for vessels or as plug-in version for service engineers. The DPI-2 is delivered in a tough waterproof carrying case. 2 Digital Pressure Indicator DPI-2

23 Pressure Sensor The DPI system includes the pressure sensor which serves to determine the cylinder pressure in the engine. It is characterized by a high level of precision and rugged design. This type of quartz sensor has passed a trial of non-stop 16,000 hours and is accepted worldwide by all engine manufacturers. Incremental Encoder The incremental encoder delivers up to 2,048 pulses to the electronics system, thereby enabling a very precise recording of the engine data, such as the position of the top dead centre, or of the crankshaft angle. Therefore, no additional TDC sensor and CAE sensor is required here. For Wärstilä RT-flex Engines The incremental encoder is delivered to you with a complete assembly kit for mounting on Wärtsila RTflex engines. Pressure sensor TDC Sensor The TDC sensor is used on 4-stroke engines to determine the exact position of top dead centre on the cylinders. This is necessary for an accurate power and MIP calculation. Incremental encoder for RT-flex engines TDC sensor CAE Sensor For MAN Alpha Lubricator Systems The use of the Leutert alpha lubricator connection kit is optional and suitable exclusively for engines equipped with an MAN alpha lubricator system. It enables the use of the incremental encoder already standard installed with the MAN alpha lubricator without impairing its function. The CAE sensor is used in combination with a TDC sensor on 2-stroke engines to measure the angular position of the crankshaft and the cylinders for accurate power and MIP calculation. CAE sensor Leutert alpha lubricator connection kit Digital Pressure Indicator DPI-2 3

24 Analyzing software After measuring the pressure with the hand-held data acquisition unit and the pressure sensor, the measured data may be downloaded to any PC and analyzed with our analyzing software supplied with the DPI system. Pressure relevant to crankshaft angle, peak pressure and the PV diagram may be displayed as well as the derivative plot. Additionally, the power of each cylinder and the total power of the engine may be calculated, see figures below. Other functions including overlaying of measurements for comparisons and sending function assist in using the DPI system for condition based maintenance. Technical specifications Pressure range : bar Standard connection : W27 x 1/10 Speed range : rpm for 2-stroke engines rpm for 4-stroke engines Pressure resolution : Accuracy : < 0.5% 0.07 bar for pressure range bar Memory capacity : 9 engines (32 data sets) Battery capacity : 6 hrs Battery charger Input : V AC, Hz Operating temperature range Hand-held unit : 0 55 C Pressure sensor : C Dimensions Hand-held unit : 220 mm x 130 mm x 45 mm Pressure sensor : Ø = 60 mm, L = 210 mm Carrying case : 470 mm x 365 mm x 146 mm Weight Hand-held unit : 790 g Pressure sensor : 830 g Carrying case : 6500 g incl. contents Screenshots of the DPI software Carrying case Subject to change without notice. Issued 06/2015 MADE IN GERMANY 4 Digital Pressure Indicator DPI-2