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6.
Hardware setup and test preparation |
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Step 1: Plug in temperature probe to the back of M3500 viscometer as shown in
the right picture. |
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Step 2: Plug in thermal cup power outlet as
shown in the right picture, if temperature control is desired. |
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Step 3: Put on serial cable as shown in the
right picture. Serial communication only works with M3500a models. |
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Step 4: Remove the Sample Cup from the stage. Assemble the Dust Shield onto the Bob Shaft with the flange end up and hold in place as shown in
the right picture. |
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Step 5: Assemble the Bob (6) onto the Bob Shaft by screwing it clockwise until it is tight against the Dust Shield.
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WARNING
Never over tighten the bob. A snug tight is good enough. Over tightening the bob may incur damage to M3500 viscometers. |
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Step 6: As shown in the right picture, assemble the Sleeve onto the Rotor by screwing it clockwise. Make sure the threads in the Sleeve and on the Rotor are clean so the Sleeve will shoulder on the Rotor by hand tightening. |
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Step 7: Please notice that there are three stands at the bottom of the thermal cup as shown in
the right picture. Put the thermal cup on the stage (item 10 in Fig 1, in appendix B), matching those stand to the three holes on the stage. |
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Step 8a. Put small sample adapter into the thermal cup and stick the thermal probe into the hole in the side wall of the small sample adapter.
Or, you can use large sample cup as shown in the right
picture, and follow the instruction in "Step 8b", instead in "Step 8a".
Step 8b. Fill the Sample Cup to the line scribed in it with a recently agitated sample of the fluid to be tested. The stainless steel sample cup provided has a line at the proper 350-ml test fluid level. Fill the cup to that line with recently stirred test fluid. A scribed line on the sleeve indicates proper immersion depth. Damage to the bob shaft bearings may occur if this immersion depth is exceeded. If other sample holders are used, the space between the bottom of the rotor and the bottom of the sample holder should be one-half inch (1.27cm) or greater.
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WARNING
Never use small sample adapter with the big sample cup
together! Only use USE ONE of them at a time! |
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At last, plug the power cord of
M3500 into a AC power outlet, and turn the switch on at the
back of the unit.
Make sure that no sample should be
contacting the bob, when you power up your M3500 viscometer.
Otherwise self-calibration will be incorrect.
When M3500 is just powered up, at first a screen of
company and instrument information will show up. Then the
instrument will go through self warming-up and
self-calibration.
After that, the main LCD menu screen will come up and
your M3500 is ready to test.
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Features
If during the self-calibration process, M3500 senses that its bearing drag is more than 0.7% of full scale, it will recommend you to change the bearing.
If m3500 battery power is low, it will warn you to change the coin cell battery. However, you do not have to change the battery unless memorization of old test results after power down is desired.
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Cleaning
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Refer to Fig 1 in appendix B for parts described in the following procedure. The disassembly and cleaning procedure are provided as below.
Step 1. Loose the thumbscrew (item 9 in Fig 1 appendix B), lower the stage (item 10 in Fig 1 appendix B) to the bottom position.
Step 2. Take off cup and temperature probe for cleaning.
Step 3. Twist the sleeve counterclockwise while holding the rotor to take off the sleeve.
Step 4. While pulling down the bob very slightly, rotate the bob counterclockwise to loose the bob, please be prepared that one the bob is take off, the dust shield might fall down, as shown in
the right picture.
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WARNING
Turning the bob clockwise to loose it when looking down from the top of the machine. |
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