BROOKFIELD D Helipath Stand Instructions

D Helipath Stand
Instruction Manual

Model D Helipath Stand Instructions
These instructions apply to both the Standard and Magnetic versions.

Electrical Certifications
Conform to CE Standards:
BSEN 61326: BSEN 61010-1:
Electrical equipment for measurement, control and laboratory use – EMC requirements.
Safety requirements for electrical equipment for measurement, control and laboratory use Airborne Noise Emissions – levels do not exceed 70 dB(A).
Check carefully to see that all components are received with no concealed damage.

1 drive unit (HS-1Y)
1 base (GV-1201)
2 leveling screws (GV-1203) •
1 upright rod (VS-38)
2 adjustable stops (HS-23Y)| Spindle Set (SST) includes:
or
• 6 T-bar spindles (T-A — T-F)
3) • 1 chuck/closer/weight assembly (BTU-18Y)
• 1 spindle box (TU-25Y)| Or
pindle Set (SSTM) for Magnetic includes:
• 6 T-bar spindles (T-A — T-F)
• 1 chuck/closer/weight assembly (BTU-18MY)
• 1 spindle box (TU-25Y)
---|---|---

Stand Assembly

Insert the upright rod in the base, positioning the gear rack facing toward the rear. Thread the screw with lock washer into rod under the base, but do not tighten. Slide one  adjustable stop down the upright rod, with locking plate facing up. With the drive unit handle clamp facing forward, depress the disengaging lever and slide the drive unit  down the upright rod. Slide the other adjustable stop down the upright rod above the drive unit; again, locking plate of adjustable stop faces up. Center the complete assembly between the base legs and tighten the screw into the upright rod. Install the clamp knob, but do not tighten.

The Helipath Stand must be electrically grounded (earthed) to ensure against electronic failure.
This device may have been supplied with a power cord without an end connector. An end connector must be attached prior to operation. Attach the end connector in  accordance with local electrical requirements.
Connect the Helipath Stand only to an electrically grounded (earthed) power supply.

Viscometer Mounting

Insert For Dial models with serial numbers below 200,000, lower the Viscometer power cord into the handle clamp slot with the cord passing to the left of the upright rod  (Dial viscometers only). For Digital models and Dial models with serial numbers above 200,000, slide the Viscometer handle core into the handle clamp and tighten the clamp  knob. Check the lateral position of the Viscometer relative to the base. Make adjustments and retighten the screw as required to center the Viscometer between the  base legs. Referring to the stand bubble level, adjust the base leveling screws until the stand is level. Referring to the Viscometer bubble level, position the Viscometer until  the bubble is centered and tighten the clamp knob.

Note:
If your viscometer was supplied with a guard leg, this guard leg is not used when using T-bar spindles. Remove it from the  viscometerby loosening the round thumbscrew  on the back of the guard leg.
With the system assembled and mounted as shown in the illustration, insert the spindle into the chuck before attaching the chuck to the Viscometer. Then connect the  chuck/closer/weight assembly, with spindle, to the Viscometer. (Note: the left-hand coupling thread for instruments which require spindle attachment by screwing on.  Instruments with Magnetic design have direct insertion of the spindle assembly into the magnetic coupling on the viscometer.)
Refer to the Helipath Stand Spindle Ranges sheet and select a T-bar spindle. Slide the spindle into the chuck and tighten.
Lower the spindle into the fluid by depressing the disengaging lever on the Helipath Drive Unit. Recommended initial spindle location is achieved when the bottom of the T  spindle is 1/4” above the surface of the test material. Push the reversing rod on the drive unit down. Make sure that the drive unit is OFF (the yellow light on the top of the  drive unit will not be illuminated).
Turn the Viscometer motor on and allow for one to two revolutions of the spindle before turning on the Helipath Drive Unit which when switched on, will travel 7/8” per  minute. Set the adjustable stops to accommodate the travel of the Helipath that will provide the desired penetration of the spindle (do not go closer than 1/4” from the  bottom of the test material container).
Turn on the Helipath Drive Unit (the yellow light will now be illuminated). NOTE: Brookfield does not recommend operating the Viscometer at RPMs greater than 12, when  using the Helipath Stand Accessory.
Observe the dial reading or % torque display (on Digital Models). Record readings where necessary, keeping in mind that low rotational speeds may produce the best results.  In this way, a figure will be obtained for the consistency at equal increments of penetration through the material. Operation at low rotational speeds will usually produce  optimum readings. Multiple readings should be taken as the T-bar travels through the helical cycle (approximately every 15-20 seconds).

Note:

1. It is recommended that the spindles be cleaned after each measurement.
2. The spindle can be placed anywhere in the sample material’s container prior to use, as long as rotation of the spindle is not impeded.
3. It is not recommended to use T-Bar spindles to check calibration of your instrument. Use the standard spindles which came with your instrument.

Viscometer Range Data

*Range Data (T-Bar Spindles)** – applicable to Dial Reading & Digital Viscometers/Rheometers

| DIAL READING| DV1M| DV2T| DV3T/DVNext
---|---|---|---|---
LV| 156 – 3.1M| 156 – 3.1M| 156 – 9.3M| 156 – 9.3M
RV| 2K-20M| 2K – 20M| 2K – 100M| 2K – 100M
HA| 4K-40M| 4K – 40M| 4K-200M| 4K-200M
HB| 16K – 160M| 16K – 160M| 16K – 800M| 16K – 800M

• Ranges in centiPoise (cP) 1 cP = 1 mPa•s
  ** Maximum range shown is at 0.1 RPM
  K = 1000
  M = 1,000,000
  Note: Max. viscosity at 0.3 RPM for LV with T-F; Min. for LV at 12 RPM with T-A at 10% FSR. Max. viscosity at 0.1 RPM for RV/HA/HB with T-F; Min. for RV/HA/HB  at 10 RPM with T-A at 10% FSR.

Spindle Range Data

This Universal Spindle Range table lists the Spindle Range Coefficients for all (6) T-bar spindles. Dividing the coefficient number by any rotational speed will give the full  scale viscosity range for a Viscometer/Rheometer spindle/speed combination. (The Auto Range key on DV-E, DV-I+, DV-II+ or DV=III+ instruments provides this  information in the digital display).

| Spindle Range Coefficient
---|---
Spindle| Entry Code| LV| RV| HA| HB
1-4| 91| 18.750| 200.000| 400.000| 1.600.000
1-B| 92| 37.440| 400.000| 800.000| 3.200.000
T-C| 93| 93.600| 1.000.000| 2.000.000| 8.000.000
T-D| 94| 187.200| 2.000.000| 4.000.000| 16.000.000
T-E| 95| 468.000| 5.000.000| 10.000.000| 40.000.000
1- F| 96| 936.000 _| 10.000.000| 20,000,000| 80.000.000

(Analog/Dial Viscometer)
Example:

1. Determine the full scale viscosity range (100% of scale) of a T-C spindle running on a RV Series @ 5 RPM.

2. Determine minimum viscosity range (10% of full scale) at above conditions.

Note: Maximum operable speed when using Helipath Stand is 10 or 12 RPM depending on speeds available on your viscometer.

Spindle Factors (for Analog/Dial Viscometers)

Speed
(PPM)| LVT Viscometer Speed| RVT Viscometer
---|---|---
T-A| T-B| T-C| T-D| T-E| T-F (PPM)| T-A| T-B| T-C| T-D| T-E| T-F
12| 16.| 31.| 78| 156| 390| 78010| 200| 400| 1K| 2K| 5K| 10K
6| 31.| 62.| 156| 312| 780| 1.56K 5| 400| 800| 2K| 4K| 10K| 20K
3| 62.| 125.| 312| 624| 1.56K| 3.12K 4| 500| 1K| 2.5K| 5K| 12.5K| 25K
2.| 125.| 250.| 624| 1.248K| 3.12K| 6.24K 2.5| 800| 1.6K| 4K| 8K| 20K| 40K
0.6| 312| 624| 1.56K| 312K| 7.8K| 15.6K 2| 1K| 2K| 5K| 10K| 25K| 50K
0.3| 624| 1.248K| 312K| 6.24K| 15.6K| 31.2K 1| 2K| 4K| 10K| 20K| 50K| 100K
0.5| 4K| 8K| 20K| 40K| 100K| 200K
Speed
(PPM)| HAT Viscometer Speed| HBT Viscometer
T-A| T-B| T-C| T-D| T-E| T-F (PPM)| T-A| T-B| T-C| T-D| T-E| T-F
10| 400| 800| 2K| 4K| 10K| 20K 10| 1.6K| 3.2K| 8K| 16K| 40K| 80K
5| 800| 1.6K| 4K| 8K| 20K| 40K 5| 3.2K| 6.4K| 16K| 32K| 80K| 160K
3.| 1.6K| 3.2K| 8K| 16K| 40K| 80K 2.5| 6.4K| 12.8K| 32K| 34K| 160K| 320K
1| 4K| 8K| 20K| 40K| 100K| 200K 1| 16K| 32K| 80K| 160K| 400K| 800K
0.5| 8K| 16K| 40K| 80K| 200K| 400K 0.5| 32K| 64K| 160K| 320K| 800K| 1.6M

K = 1,000
M= 1,000,000

To calculate viscosity in centipoise (cP), multiply the dial reading by the factor corresponding to the viscometer spindle and speed combination utilized. 1cP = 1mPa•s

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