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Absolute pressure measuring accuracy (from gauge and differential pressure series)
HART PROFIBUS PA or Foundation Fieldbus
Influence of mounting position In pressure per change of angle
● for
absolute pressure (from the gauge pressure series): 0.05 mbar (0.000725 psi)
per 10° inclination
● for absolute pressure (from the differential pressure series): 0.7 mbar
(0.001015 psi) per 10° inclination
Correction via zero offset
Power supply influence In percent per change in voltage
0.005 % per 1 V
–
Measured value resolution – 3 • 10
-5
of the rated measuring range
Differential pressure and flow rate measuring accuracy
HART PROFIBUS PA or Foundation Fieldbus
Reference conditions ● Rising characteristic curve
●
Start of scale value 0 bar
● Seal diaphragm: stainless steel
● Measuring cell with silicon oil filling
● Room temperature 25°C (77°F)
● Measuring span ratio r
r = maximum measuring span or set
measuring span
–
Measurement deviation with limit
setting, including hysteresis and
repeatability.
Linear characteristic curve ≤ 0,075
● r ≤ 10 ≤ (0.0029 • r + 0.071) % –
● 10 < r ≤ 30 ≤ (0.0045 • r + 0.071) % –
● 30 < r ≤ 100 ≤ (0.005 • r + 0.05) % –
Square root extracting characteristic
curve (flow rate > 50%)
≤ 0,1 %
● r ≤ 10 ≤ 0,1 % –
● 10 < r ≤ 30 ≤ 0,2 % –
square root extracting characteristic
curve (flow rate 25 … 50%)
≤ 0,2 %
● r ≤ 10 ≤ 0,2 % –
● 10 < r ≤ 30 ≤ 0,4 % –
Settling time T
63
without electrical
damping
● approx. 0.2 s
●
approx 0.3 s for measuring cell 20 and 60 mbar (0.29 and 0.87 psi)
Long-term drift at ±30°C (±54°F) ≤ (0.25 • r) % per five years
static
pressure max. 70 bar g (1015 psi g)
≤ 0.25 % per five years
static pressure max. 70 bar g (1015 psi g)
● 20 mbar (0.29 psi) measuring cell ≤ (0.2 • r) % per year ≤ 0.2 % per year
● 250, 600, 1600 and 5000 mbar
(0.29, 0.87, 2.32 and 7.25 psi)
measuring cell
≤ (0.125 • r) % every 5 years ≤ 0.125% every 5 years
Technical data
11.4 Measuring accuracy
SITRANS P, DS III series with HART
Operating Instructions, 09/2012, A5E00047092-08 181
- Pressure transmitter 1
- Table of contents 10
- 1.4 Scope of the instructions 12
- 1.5 Checking the consignment 12
- 1.7 Notes on warranty 13
- Safety instructions 15
- 2.2 Use in hazardous areas 16
- 3.2 Application range 20
- 3.3 Structure 21
- 3.4 Nameplate layout 23
- SITRANS P 24
- 3.6 Functional principle 25
- Overview 26
- 3.7 Remote seal 33
- 3.8 SIMATIC PDM 33
- Installing/mounting 35
- 4.1 Basic safety instructions 36
- ① Flameproof joint 37
- 4.1.2 Proper mounting 40
- 4.2 Disassembly 41
- Installation configuration 42
- 4.3.3 Fastening 43
- Requirements 45
- 4.4.2 Installation for level 46
- Assembly on an open container 47
- 4.7 Rotating the display 57
- Connecting 59
- 5.1 Basic safety instructions 60
- Connecting the device 62
- Closing the device 63
- 5.3 Connecting the Han plug 64
- ④ Shrink sleeve 66
- ② Positioning catch 66
- Operation 67
- Basic safety instructions 68
- 6.4 Display 69
- 6.4.2 Units display 70
- 6.4.3 Error display 71
- 6.4.4 Mode display 72
- 6.4.5 Status display 72
- 6.4.6 Overflow range 73
- 6.5 Local operation 74
- Operating functions 75
- 6.5.2 Operation using buttons 76
- Setting start of scale value 81
- Adjusting full scale value 83
- Differences 85
- Blind adjusting 85
- Example of blind adjusting 85
- 6.5.6 Trimming the zero point 89
- 6.5.7 Current transmitter 90
- Releasing key lock 93
- Variable application point 94
- Fixed application point 94
- 6.5.12 Measured value display 96
- 6.5.13 Unit 97
- Condition 101
- Introduction 101
- Fundamental description 101
- See also 101
- 7.2 Process tag data 102
- 7.3.2 Measuring mode selector 103
- 7.3.3 Variable mapper 103
- Description 105
- DV Device variable 106
- MA Start of scale value 106
- ME Full scale value 106
- 7.3.9 Measured value status 112
- UNCERTAIN status 113
- HIGH LIMIT and LOW LIMIT 113
- Change in status 113
- LIMIT are swapped around 115
- 7.3.10 Analog output 116
- Procedure 119
- 7.7 Electrical damping 120
- 7.8 Fast response mode 120
- 7.9 Current sensor 120
- 7.10 Fault current 120
- Lock options 122
- 7.13 Measured value display 123
- 7.15 Bar graph 125
- 7.16 Sensor calibration 125
- Current sensor trim 126
- Factory calibration 127
- Static configuration data 128
- 7.21 Diagnostic functions 130
- &DOLEUDWLRQLQWHUYDO 131
- 6WDELOLW\PRQWK 131
- 3UHVVXUHFXUYH 132
- 8SSHUGUDJLQGLFDWRUSRLQW 132
- /RZHUGUDJLQGLFDWRUSRLQW 132
- 7.21.5 Limit modules 133
- 7.22 Simulation 135
- 7.23 Limit monitor 136
- Functional safety 139
- Operational reliability 141
- 8.2.1 Safety function 142
- 8.2.2 Settings 142
- 8.2.3 Requirements 143
- 8.2.5 Maintenance/Checking 144
- 8.2.6 Safety characteristics 144
- 8.3.1 Safety function 145
- 8.3.2 Requirements 146
- 8.3.3 Settings 147
- 8.3.5 Maintenance/Checking 148
- 8.4 Add-on parts 149
- Commissioning 151
- Requirement 155
- Service and maintenance 161
- 10.2.2 Checking the gaskets 165
- 10.3 Cleaning 166
- Cleaning the enclosure 167
- 10.4 Return procedure 168
- 10.5 Disposal 168
- Technical data 171
- 11.2 Input point 172
- 11.3 Output 179
- 11.4 Measuring accuracy 179
- 11.5 Operating conditions 185
- 11.6 Construction 189
- 11.9 HART communication 196
- Dimension drawings 197
- ① Key cover ⑤ Connection side 204
- 12.4.1 Note 3A and EHDG 205
- Flanges as per ASME 206
- Connections as per DIN 206
- Other connections 208
- BioConnect 208
- connectors 208
- 12.4.4 PMC Style 210
- 12.4.5 Special connections 211
- IDF connectors 212
- Spare parts/accessories 213
- 13.1 Order data 214
- Appendix 217
- A.3 Literature and catalogs 218
- A.5 Technical support 222
- List of abbreviations 223
- B.1 Functional safety 224
- Glossary 225
- Failure/Fault 226
- Frequency shift keying 226
- $( 234
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