Turbines CDS2000 - Field Calibration

Revision C – January 2023
CDS2000 Page | 42
FieldCalibration
CalibrationMethods:
The two most popular field calibration methods are a calibration prove or a weigh scale. The metrological
preferred method is the Calibration Prove due to superior accuracy. The scale offers an approximation
and should be conducted with large volumes to minimize the error introduced by the magnitude of the
scale resolution (intervals). The best practice when using a scale is to place the receiving vessel on the
scale. For any procedure the CDS2000 should be in the Prove Mode. To enter the Prove Mode, with the
CDS2000 powered up normally, depress the Details and Alarms Softkeys for approximately 3 seconds
until the Setup Menu appears. With the Setup Menu displayed, click on the Prove Mode button and enter
the User Password. A screen stating “Prove Mode Active” will appear once a successful password has
been entered. Simply hit the Exit softkey and you will be returned to the operating screen where you will
see, in red, Prove Mode and a “05:00” timer counting down. The Prove Mode allows repeated access to
adjust the K-factor while the cooldown timer, flow inhibit of the reset function and K-factor are disabled.
CalculatingnewK‐factors:
Calculating a new K-factor is the identical regardless of calibration method. Although the TPS1500 Flow
Calibration Prover calculates the new K-factor not all competitive systems offer this convenience. A
simple formula calculates the new K-factor.
Note: Confirm that the engineering units of both the calibration method and the CDS2000
are the same by using the appropriate liquid equivalency.
Example:Calibrationtotal=50,0 00 lbs,CDS2000total=49.000lbs.,presentKfactor=150.00
CDS1000total*presentKfactor 49,000*150
CalibrationTotal 50, 000
Example:Calibrationtotal=50,0 00 lbs,CDS2000total=7,265gallons,presentKfactor=150.00
50, 000
6.745#/gal.
NewKfactor= ==147
Convert50,000lbs.LINtogallons: =147
ProgramminganewK‐factor:
If equipped with a Program Enable Module (PEM) cut the lead seal wire and remove the PEM. With the
CDS2000 powered up normally, depress the Details and Alarms Softkeys for approximately 3 seconds
until the Setup Menu appears. With the Setup Menu displayed, click on the Metrology Configuration
button. With the Metrology Configuration menu open, click on the “Calibration” button. Here, you can
click on “Edit” and enter a new K-factor as desired by using the keypad that appears on the totalizer.
Example: A new K-factor is calculated to be 147; enter 147.