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Fluke P3800 [31/32] H 16000
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Pressure Corrections
Temperature and Gravity Corrections 6
6-3
Explanation of Nomogram
A straight line passing through the known values of altitude (H)
and latitude (L) of the site of the DWT, when extended to scale
‘g’, will indicate the approximate value of ‘g’.
L
85
80
75
65
90
60
50
70
45
30
20
35
40
55
5
25
15
0
10
9.765
9.78
9.80
9.77
9.82
9.79
9.83
9.81
g
METRES
14000
12000
10000
8000
6000
4000
2000
0
FEET
0
H16000
glf12.eps
Figure 6-2. Nomogram for Finding the Value of "g" from Altitude and Latitude
Содержание
- P3800 series 1
- P3800 series users manual 1
- Warranty 2
- Table of contents 3
- List of tables 5
- List of figures 7
- Chapter 1 9
- General information 9
- How to contact fluke 9
- Introduction 9
- Piston of area effective 9
- Piston to applied mass total pressure 9
- Safety information 10
- Symbols used in this manual 10
- W warning 10
- General information 11
- Hydraulic circuit schematic 11
- Chapter 2 13
- Fluid filling 13
- Location 13
- Preparation 13
- Chapter 3 15
- Connections 15
- Operation 15
- P3800 series 16
- Procedure for removing trapped air from system 16
- Procedure for priming the pressure intensifier 18
- Procedure for generating system pressure 19
- Generating calibration pressure 20
- Chapter 4 23
- Introduction 23
- Maintenance 23
- Pcu removal 23
- W warning 23
- Cleaning 24
- Replacement 25
- Chapter 5 27
- Do s and don ts 27
- Don ts 27
- Introduction 27
- Recalibration 27
- Chapter 6 29
- If the dwt is located at a position where the values of the gravitational acceleration and temperature of the operation are the same as those values specified for calibration then the actual pressure is fully corrected if the dwt is used under different conditions then further correction is necessary the reference level is specified on the certificate 29
- Introduction 29
- Pressure correction is required for high accuracy work and is due to the effects of pressure on the pcu assembly during operation by reference to the certificate of calibration provided the actual pressure in the system can be obtained all values relate to the environmental conditions stated on the certificate 29
- Pressure corrections 29
- The pressure in the system when the carrier is loaded with incremental weights is given together with the pressure in the system when the carrier is loaded with major and incremental weights from these values assuming effects are linear the incremental weight corrections over the range may be calculated 29
- The pressure in the system when the carrier is loaded with major weights can be read directly from the second column of the certificate 29
- Temperature and gravity corrections 30
- Explanation of nomogram a straight line passing through the known values of altitude h and latitude l of the site of the dwt when extended to scale g will indicate the approximate value of g 31
- H 16000 31
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