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enough material to cause a difference in light blockage of the sensors, or to block the sensors.

Data is used for trending wear as in section 8.2 Quantifying DR Data.

Maintaining the DR-7

The DR-7 requires little maintenance except keeping the instrument clean and oil free and keeping the

LED's sensors calibrated.

9.1 – Sensor Cleaning

Eventually over time dirt and oil will build up in the sensor area. Routine cleaning will eliminate

possibilities of sensor reading errors caused by dirty or oily sensors. Dirt deposits can lead to obstruction

of light generated by the LED's, which in turn will increase DL and DS readings.

To clean the sensor area, follow the procedure below:

Close the DR-7 program and shutdown the Windows operating system.

Once the operating system is shut down, turn off the DR-7 and unplug the power cord.

Remove the sensor cable coming out the top of the optics holder assembly by loosening the set screw

with a 0.05-inch Allen wrench. The set screw is located on the left side of the optic holder assembly.

Gently pull upwards on the optics cable, removing the optics.

NOTE:

Ensure the position of the optics are correctly inserted the same way when re-installing into

the block, otherwise DL and DS readings will be inverted. A letter L and S are stamped into the nylon

insert. The L should be positioned into the left side of the optics holder socket.

Clean the two optical sensors with heptane or isopropyl alcohol and dry them by gently blowing them

off with air. If the optical sensors come out of their sockets, they can be reinserted with the short lead

placed into the upper socket. The socket is designed to only allow the sensor to be inserted one way.

Ensure the Optics Assembly is clean by lifting the gate and cleaning the area where the precipitator

tube is inserted, paying attention to thoroughly cleaning the light source area.

Reinsert the optics making sure that they are fully seated in the optics block. Ensure that the L

marking on nylon insert is facing to left-hand side of the instrument.

Tighten the small Allen set screw on the side of the block to hold the optics in place.

Turn the Instrument back ON and follow the directions given on the screen or in section 7.3.1 –

OPTICAL CALIBRATION

of the manual to conduct optical light source calibration.

NOTE: Never remove the optics block from the magnet assembly or tamper with the adjustment

screws located on the top and sides of the optics block. Doing so will misalign the optics with the

light source. The optics are aligned and calibrated during the unit production assembly process. If this

happens contact Trico for support.

Содержание DR-7

Страница 1: ... Corporation 1235 Hickory Street Pewaukee WI 53072 Phone 262 691 9336 www tricocorp com Model ___________________________________ Serial Number ____________________________ Date of Purchase __________________________ Windows Product Serial Number ________________________________________ ...

Страница 2: ...0 7 1 RUN DR Tab 10 7 1 1 STANDARD Operation 11 7 1 2 OPAQUE Operation 14 7 1 3 MENU Button 16 7 1 4 Shutdown Procedures 16 7 2 CHARTING Tab 17 7 3 BASELINE Tab 17 7 4 CALIBRATION Tab 18 7 4 1 OPTICAL Calibration 18 7 4 1 1 Optical Calibration Check with Trico DR7 FIL 20 7 4 2 END OF OIL Sensor Adjustment 21 7 5 HELP Tab 22 7 6 ABOUT Tab 22 8 Downloading and Understanding DR Data 23 8 1 Quantifyin...

Страница 3: ...ries of Instruments were created finally with this current DR 7 design During the development of the Ferrography instruments it was discovered the most sensitive locations for detecting a changing wear situation were found this point was determined to be at the entry point of the magnets at a position approximately 5 millimeters downstream Particles of 5 microns or greater collected at the entry p...

Страница 4: ...tube can be attached using the tubing cut from a used precipitator tube as a replacement 3 Remove the two screws from the top of the instrument where the vial holder goes Place the stainless vial holder on top of the tower with the fingers pointing toward you and thread the two screws back into the holes at the top left side of the Instrument Tighten the screws using a 2 Phillips head 4 Plug the u...

Страница 5: ...GB Flash External USB Ports 2 x USB A Ethernet Connection RJ45 cat 5 RAM 4 GB DDR2 RAM Processor Intel Celeron CPU N2807 1 58 Ghz Environmental Conditions For indoor use on a solid level surface without movement or vibration Use in a well ventilated area Room temperature 50ºF to 85ºF 10ºC to 29ºC Humidity 5 to 50 non condensing CAUTION DO NOT operate the DR 7 with the back panel removed Unplug the...

Страница 6: ...ezing the DL and DS readings The DR 7 will record the readings if the sensor is bypassed by pressing the STOP button when the technician determines that the test is completed 3 Tubing Guide Used to bend and guide the capillary tubing without kinking from the vertical position to the inclined magnet assembly Tubing is held in place by weaving it through the three pins 4 LCD Screen This touch screen...

Страница 7: ...r DR 7 support Record these numbers on the DR 7 user manual for future reference 12 Ethernet Network Jack Ethernet cable may be used to download the DR 7 data to a database and utilize internet intranet Windows functions 13 Power Input Jack The standard universal power cord supplied with the unit is first plugged into the power input jack and then plugged into the power receptacle that supplies ap...

Страница 8: ...r tube is constructed of four parts The first is a 33 piece of capillary tubing This runs into a 4 inch piece of glass and is held in place by a black shrink tube A piece of tygon tubing is added to the other end of the glass to connect the glass tube with the left bulkhead Part 74 0250 Grease Solvent An agent used to dissolve grease into a form that can be tested with the DR 7 unit Part 75 0010 B...

Страница 9: ...posited in the precipitator tube around the DL sensor To avoid this use the prepared sample as soon as possible or re mix the sample before testing so that wear particles are properly dispersed 6 2 Dilutions Readings on the DR 7 greater than 90 in the 1 1 or 1 2 dilution modes are not linear due to the particles piling on top of one another When the DR 7 readings reach 90 the test is invalid and s...

Страница 10: ... Located on the right side of the RUN DR tab is the Submenu Selection Area In this area all sub menues will appear when the MENU STANDARD or OPAQUE buttons are selected In the left half of the screen two black blocks appear indicating the DL and DS numbers during the test Above these blocks system messages will appear prompting the user or indicating warning messages when parameters are out of ran...

Страница 11: ...gain for accurate results 7 1 1 STANDARD Operation The black shrink tubing should be placed against the left edge of this assembly to run the test to ensure no light intrusion A depress lever is located to the left of the optics assembly to open and hold the precipitator gate in the up position to allow for the precipitator insertion under the optics Moving the lever forward opens the gate while m...

Страница 12: ...uired in MENU Settings i A system message will indicate that the user will need to enter a control number for the sample and the START button will be gray and un selectable ii Press the ENTER CONTROL NUMBER button and the keypad will now appear iii Enter the control number Make sure the control number is correct and press ENTER otherwise press CLEAR to clear out the control number to enter a new o...

Страница 13: ...recipitator tube For full suction to begin the oil level in the precipitator tube must flow past the bottom of the vial in the vial holder If this does not happen the viscosity of the solution is too viscous and the PUMP button can be pressed until flow starts The default for pump revolutions is set at 2 and can be changed by changing the settings in the MENU Thin oil samples only need one revolut...

Страница 14: ...scard the precipitator tube and oil sample to begin a new test 7 1 2 OPAQUE Operation An opaque sample is defined as one which is too dark to read under the optical sensors Usually samples filled with carbonaceous material produce a reading of 190 in one or both sensors as soon as they start to flow through the glass section of the precipitator tube These dark particles cut off all the monochromat...

Страница 15: ...o the vial that contains the heptane This will wash the dark material out of the precipitator tube and you will get the actual DL and DS readings By moving the precipitator tube in and out of the heptane air bubbles will be introduced into the capillary tube These bubbles will help remove the opaque oil and nonmagnetic material in the precipitator tube 7 When the heptane is gone and the flow has s...

Страница 16: ...to exit out of the menu Default settings are Beep on key hit No Control number required No Pump revolutions 2 7 1 4 Shutdown Procedures To close the DR 7 program and exit to Windows enter the MENU Screen under the RUN DR Tab and press the EXIIT button In doing this the user enters the Windows Desktop screen Here is all of the functions of a normal Windows based operating system To shut down the po...

Страница 17: ...ERATE GRAPHS button will graph the L and S Base levels and L and S Count levels over time Pressing CLEAR GRAPHS then clears all the data from the graph 7 3 BASELINE Tab The Baseline Tab is used when runing Opaque samples and is covered under the Opaque Operation section Values are never input into this tab ...

Страница 18: ...cleaning see section 9 Maintaining the DR 7 The new design of the Optics block uses a special fluid filled calibration tube for both the alignment procedure during the factory build and in calibrating the LED light source by the lab technician The LED light source calibration should be done daily or every time the instrument is turned on This is done by selecting the OPTICS button in the CALIBRATI...

Страница 19: ...on 4 Press the CALIBRATE button in the submenu The DR 7 will automatically calibrate the light intensity by determining the maximum intensity and then balancing the optical channels to a predetermined offset to produce the most effective results 5 After the Calibration is finished the numbers in the DL and DS will read around 2550 and the message will appear Complete in the message area 6 Press EX...

Страница 20: ... Calibration tube PN 43021 from the calibration kit into the optics by pressing the lever forward on the left side of the optic block lifting the gate and then sliding the calibration tube into place 3 On the RUN DR tab press STANDARD and then START Enter a false control number if needed 4 Insert a filter under the sensor area and quickly remove it 5 The screen will now say Oil Starting Test Wait ...

Страница 21: ...f oil sensor 1 Select the CALIBRATION tab 2 Press the END OF OIL button to calibrate the end of oil sensor 3 Press START and run the sample as usual 4 Throughout the test the end of oil sensor s min and max values will be displayed 5 When the sample vial has emptied press EXIT STOP before the oil meniscus goes past the end of oil sensor in the precipitator capillary tube 6 The program will then ta...

Страница 22: ...L and DS data and write the information to the csv file if a control number was entered It will also pump the remaining liquid from the precipitator tubing to minimize excess oil spillage 7 5 HELP Tab The DR 7 has a HELP tab that contains a link to the last version of the manual that was loaded onto the machine when the unit shipped from the factory This is not an internet link and will have to ma...

Страница 23: ...small particles in the sample As particles enter a gradient magnetic field the DR 7 quantifies particles into two size ranges by reading light intensity changes at two known locations on the precipitator tube Magnetic particle separation is nearly 100 effective for ferromagnetic particles larger than 1µm and virtually all unwanted carbon and dirt particles are carried away by the oil and heptane s...

Страница 24: ...arge Particle Profile Figure 8 1B Typical Small Particle Profile If the Severity of Wear Index is plotted as a function of operating time it will respond in a more volatile manner than plotting either the DL or DS reading over time Severity of Wear can be calculated using the product of the indication of concentration and the indication of size distribution indication of concentration DL DS indica...

Страница 25: ...Concentration WPC can be generated by calculating its mean for a given number of samples For a single piece of equipment several samples are needed to generate a baseline If more than one machine that is identical in setup and operation is included in the sampling program then deriving a baseline can be faster by using the WPC of those samples However every piece of equipment generates wear in a d...

Страница 26: ...les have precipitated out and most of the particle concentration present in the oil sample are small particles This indicates the machine wear has reached an equilibrium state where large particles are being generated at the rate in which they precipitate out or are removed from the system through filtration or other means The remaining smaller particles gradually increase over time as they tend t...

Страница 27: ...therwise DL and DS readings will be inverted A letter L and S are stamped into the nylon insert The L should be positioned into the left side of the optics holder socket 5 Clean the two optical sensors with heptane or isopropyl alcohol and dry them by gently blowing them off with air If the optical sensors come out of their sockets they can be reinserted with the short lead placed into the upper s...

Страница 28: ...arty or malicious software ALL EXPRESS AND IMPLIED WARRATNTIES FOR THIS PRODUCT INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED IN DURATION TO A PERIOD OF ONE 1 YEAR FROM THE DATE OF PURCHASE FOR INSTRUMENTS AND NINETY 90 DAYS FOR SUPPLIES AND ACCESSORIES AND NO WARRANTIES WHETHER EXPRESS OR IMPLIED WILL APPLY AFTER THESE PERIODS IF THIS PRODUCT IS NOT ...

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