Siemens SITRANS P - Manual (Page 125)

SITRANS P measuring instruments for pressure
Transmitters for gage, absolute and differential pressure, flow and level
DS III series
for level
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Influence of static pressure
• on the zero point
- 250 mbar (3.63 psi) measuring cell ≤ (0.3 ⋅ r)% per nominal pressure ≤ 0.3% per nominal pressure
- 600 mbar (8.7 psi) measuring cell ≤ (0.15 ⋅ r)% per nominal pressure ≤ 0.15% per nominal pressure
- 1600 and 5000 mbar (23.2 and 72.5 psi)
measuring cells
≤ (0.1 ⋅ r)% per nominal pressure ≤ 0.1% per nominal pressure
• on the span ≤ (0.1 ⋅ r)% per nominal pressure ≤ 0.1% per nominal pressure
Measured Value Resolution - 3 ⋅ 10 -5 of nominal measuring range
Rated operating conditions
Degree of protection (to EN 60529) IP65
Process temperature Note: Always take into account assignment of max. permissible working temperature to max. per-
missible working pressure of the respective flange connection!
• Measuring cell with silicone oil filling -40 ... +100 °C (-40 ... +212 °F)
- High-pressure side p
abs
≥ 1bar: -40 ... +175 °C (-40 ... +347 °F)
p
abs
≥ 1bar: -40 ... +80 °C (-40 ... +176 °F)
- Low-pressure side -40 ... +100 °C (-40 ... +212 °F)
-20 ... +60 °C (-4 ... +140 °F) in conjunction with dust explosion protection
Ambient conditions
• Ambient temperature
- Digital indicators -30 ... +85 °C (-22 ... +185 °F)
• Storage temperature -50 ... +85 °C (-58 ... +185 °F)
• Climatic class
- Condensation Permissible
• Electromagnetic compatibility
- Emitted interference and interference immu-
nity
To EN 61326 and NAMUR NE 21
Design
Weight (without options)
• To EN (pressure transmitter with mounting
flange, without tube)
≈ 11 ... 13 kg (≈ 24.2 ... 28.7 lb)
• To ASME (pressure transmitter with mounting
flange, without tube)
≈ 11 ... 18 kg (≈ 24.2 ... 39.7 lb)
Wetted parts materials Poor in copper die-cast aluminium, GD-AlSi12 or stainless steel precision casting, mat. No. 1.4408
Housing material
High-pressure side
• Seal diaphragm of mounting flange Stainless steel, mat. No. 1.4404/316L, Monel, mat. No. 2.4360, Hastelloy B2, mat. No. 2.4617,
Hastelloy C276, mat. No. 2.4819, Hastelloy C4, mat. No. 2.4610, tantalum, PTFE, ECTFE
Measuring cell filling Silicone oil
Process connection
• High-pressure side Flange to EN and ASME
• Low-pressure side Female thread ¼-18 NPT and flange connection with mounting thread M10 to DIN 19213 or
7 /
16
-20 UNF to EN 61518
Power supply U
H
Supplied through bus
Terminal voltage on transmitter 10.5 ... 45 V DC
10.5 ... 30 V DC in intrinsically-safe mode -
Separate 24 V power supply necessary - No
Bus voltage
• Not Ex - 9 ... 32 V
• With intrinsically-safe operation - 9 ... 24 V
Current consumption
• Basic current (max.) - 12.5 mA
• Startup current ≤ basic current - Yes
• Max. current in event of fault - 15.5 mA
Fault disconnection electronics (FDE) available - Yes
SITRANS P, DS III series for level
HART PROFIBUS PA or FOUNDATION Fieldbus
© Siemens AG 2008