SV3000, SV4000 Saybolt Viscosity Bath
Operation and Instruction Manual
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3. Lamp Switch. This switch controls turning ON/OFF the lamp for illuminating the test samples.
4. Receiving Flask Holder. Properly positions the receiver flask under the bath reservoir in order to receive sample from
the viscometer tube and orifice.
5. Binding Post Knob. There are four knobs located on the top plate of the viscometer bath. These Knobs must be
unscrewed to remove the cover.
6. Temperature Probe. Senses bath temperature within the unit and relays the information to the temperature controller.
7. Stirring Motor. Constantly circulates bath medium to prevent temperature gradients and ensures temperature stability.
When cleaning and/or servicing, please be sure to disconnect unit power to avoid possible injury.
8. Thermometer/Thermocouple Port. This port allows for independent temperature measurement of the bath temperature
with a thermometer or a Pt-100 RTD probe for precise temperature measurements and digital temperature controller
calibration. If the controller needs to be calibrated, then please contact the Koehler technical service department.
9. Viscometer Tube Port. Viscometer Tubes mount vertically through these ports into the Saybolt Viscosity bath.
10. Sliding Draft Shield. To prevent drafts from disrupting transfer of sample from the viscometer tube and orifice to the
receiving flask.
11. Cooling Coil Inlet Valve. Connect suitable cold water or refrigerated coolant for operation at near-ambient temperatures.
12. Overflow Outlet. Connect tubing from overflow outlet to a waste receptacle in case of oil expansion.
13. Cooling Coil Outlet Valve. Exit valve for coolant.
14. Bath Oil Draining Valve. To drain the oil from the unit place waste receptacle under the drain valve. In the open position,
the draincock will be parallel to the valve. When the bath is finished draining, close the draincock. In the closed position,
the draincock will be perpendicular to the valve.
15. Accessory Plug. Powers Stirrer Motor and Heating Coils. Must be disconnected when removing top plate to fill bath.
16. RS232 Port. For communication with an external PC. Using the Communication Port Cable supplied for the Saybolt
Viscosity Unit, connect the RS-232 port to a communication port on the PC.
17. Automatic Timing Display (SV4000 only). Displays time in seconds with an accuracy of 0.1s. Time starts when Sensor
on switch is pressed and stops when sample passes optical sensor mark on the receiving flask.
18. Reset Button (SV4000 only). Resets time to display zero. Timer will then be ready to perform another test.
19. Timer ON/OFF Switch (SV4000 only). Pressing this button to the ON position will automatically open the orifice valve
and start the timer. Upon completion of the test, pressing the switch to the OFF position closes the valve so the user can
load a subsequent test sample in the viscometer.
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