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3098 Technical Manual Accuracy Considerations
4-5
3098 CALIBRATION
Ref. No.: A1 Date: 24/07/97
3098 Ser. No.: xxxxx Signal Amplifier Ser. No.: YYYYY Vibrating Cylinder Ser. No.: ZZZZZZ
INPUTS
Sample Gas Type: Natural Gas Required Specific Gravity Span: 0.5 to 0.7
Selected Reference Pressure at 20°C: 7 bars
Calibration Gas X Type: Methane Calibration Gas Y Type: Nitrogen
Specific Gravity (Gx): 0.5549 Specific Gravity (Gy): 0.96715
3098 Output (Tx): 514.798
μ
s 3098 Output (Ty): 523.213
μ
s
NOTE: Where the output is required in Relative or Standard Density units, simple substitute these values for
the Specific Gravity values.
CALCULATIONS
Since the Specific Gravity, G = K
o
+ K
2
T
2
1.
where K
2 =
G
x - Gy
2.
T
x
2
- Ty
2
= 4.719593X10-5
K
o =
G
y - K2Ty
2
3.
= -11.952