Model 415C & 415SGS Instruction Manual
D01669102
April 2019, Revision A
22
14.
Table 6-1 Consistency as a function of Weight vs. Torque*
TORQUE (g/cm)
WEIGHT (g)
CONSISTENCY (Bc)
0
0
-4
128
50
2.5
258
100
9
378
150
15
509
200
21.5
759
300
34
1019
400
47
1279
500
60
1520
600
72
1780
700
85
2040
800
98
2080
820
100
* Based on the equation from API Specification 10A and Recommended Practice
RP10B-2
T = 78.2 + 20.02 x Bc
Where:
T = Torque, expressed in gram centimeters (g cm)
Bc = slurry consistency, expressed in Bearden units
6.8.4
Gel Strength Calibration Procedure
The gel strength meter, which indicates static gel strength development, should be
calibrated by using the consistency mechanism calibrator. This device applies a
known torque to the motor mechanism, allowing the Static Gel Strength equivalent
to be resolved on the PC. Calibration of the gel strength is described in the example
below. CementLab automatically adjusts motor for proper calibration.
1.
Ensure that the inner magnet housing is oil-filled and any entrained air
purged.
2.
Assemble the unit dry, complete with paddle, and place in cast heater.
3.
Mount pulley arm on instrument.
4.
On the screen, select Instrument Setup – Calibrate GEL.
5.
Attach the wire to the outer magnet assembly.