Brookfield DV1 User Manual

Brookeld Engineering Laboratories, Inc. Page 50 Manual No. M14-023
Calibration Check Procedure for a ermosel System
A two-step process is recommended for the ermosel.
1) Evaluate the calibration of the Viscometer alone according to the procedure outlined in
the beginning of this section, entitled Calibration Procedure for LV (#1-3) and RV, HA,
HB (#1-6) Brookeld spindles.
2) Evaluate the Viscometer with the ermosel according to the procedure described below.
When a ermosel System is used, the controller stabilizes the ermo Container at the test
temperature. DO NOT USE THE THERMOSEL TO CONTROL TO TEMPERATURES
WITHIN 15° OF AMBIENT TEMPERATURES. Consult your ermosel manual for
details.
3) Put the proper amount of HT viscosity standard uid into the HT-2 sample chamber. e
amount varies with the spindle used. (Refer to the ermosel instruction manual).
4) Place the sample chamber into the ermo Container.
5) Put the spindle into the test uid and attach the extension link, coupling nut and free
hanging spindle (or directly attach the solid sha spindle) to the DV1.
6) Allow sucient time for the viscosity standard, sample chamber and spindle to reach test
temperature.
7) Measure the viscosity and record the viscometer reading; include % and cP (mPa•s).
NOTE: e spindle must rotate at least ve (5) times before readings are taken.
Calibration Check Procedures for UL Adapter
When a UL Adapter is used, the water bath is stabilized at the proper temperature:
1) Put the proper amount of viscosity standard uid into the UL closed Tube. (Refer to the
UL Adapter instruction manual).
2) Attach the spindle (with coupling nut) onto the DV1.
3) Attach the tube to the mounting bracket.
4) Lower the tube into the water bath reservoir, or if using the ULA-40Y water jacket, connect
the inlet/outlets to the bath external circulating pump.
5) Allow sucient time for the viscosity standard, sample chamber and spindle to reach test
temperature.
6) Measure the viscosity and record the viscometer reading; include % and cP (mPa•s).
NOTE: e spindle must rotate at least ve (5) times before readings are taken.

Brookfield DV1 Specifications

General

Speed Range	0.3 to 100 rpm
Display	LCD
Number of Speeds	18
Power Supply	100-240 VAC, 50/60 Hz
Viscosity Range	1 to 2, 000, 000 cP
Temperature Measurement	Optional
Accuracy	±1% of full scale range
Repeatability	+/- 0.2%