Siemens SITRANS P - Manual (Page 79)

SITRANS P measuring instruments for pressure
Transmitters for gage, absolute and differential pressure, flow and level
DS III series for gage and absolute pressure,
with front-flush diaphragm
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Technical specifications
SITRANS P, DS III series for gage and absolute pressure, with front-flush diaphragm
HART PROFIBUS PA or FOUNDATION Fieldbus
Input gage pressure, with front-flush
diaphragm
Measured variable Gage pressure, flush-mounted
Spans (infinitely adjustable) or
nominal measuring range and
max. permissible test pressure Span Max. perm. test pres-
sure Nominal measuring
range Max. perm. test pres-
sure
0.01 ... 1 bar g
(0.145 ... 14.5 psi g) 6 bar g
(87 psi g) 1 bar g
(14.5 psi g) 6 bar g
(87 psi g)
0.04 ... 4 bar g
(0.58 ... 58 psi g) 10 bar g
(145 psi g) 4 bar g
(58 psi g) 10 bar g
(145 psi g)
0.16 ... 16 bar g
(2.23 ... 232 psi g) 32 bar g
(464 psi g) 16 bar g
(232 psi g) 32 bar g
(464 psi g)
0.6 ... 63 bar g
(9.14 ... 914 psi g) 100 bar g
(1450 psi g) 63 bar g
(914 psi g) 100 bar g
(1450 psi g)
Lower measuring limit -100 mbar a (-1.45 psi a)
Upper measuring limit 100% of max. span 100% of nominal measuring range
Input absolute pressure, with front-flush
diaphragm
Measured variable Absolute pressure, flush-mounted
Spans (infinitely adjustable) or
nominal measuring range and
max. permissible test pressure Span Max. perm. test pres-
sure Nominal measuring
range Max. perm. test pres-
sure
43 ... 1300 mbar a
(0.62 ... 18.9 psi a) 10 bar a
(145 psi a) 1300 mbar a
(18.9 psi a) 10 bar a
(145 psi a)
0,16 ... 5 bar a
(2.32 ... 72,5 psi a) 30 bar a
(435 psi a) 5 bar a
(72,5 psi a) 30 bar a
(435 psi a)
1 ... 30 bar a
(14.5 ... 435 psi a) 100 bar a
(1450 psi a) 30 bar a
(435 psi a) 100 bar a
(1450 psi a)
Depending on the process connection, the span
may differ from these values Depending on the process connection, the nomi-
nal measuring range may differ from these values
Lower measuring limit 0 bar a (0 psi a)
Upper measuring limit 100% of max. span 100% of nominal measuring range
Output
Output signal 4 ... 20 mA Digital PROFIBUS PA or FOUNDATION Fieldbus
signal
• Lower limit (infinitely adjustable) 3.55 mA, factory preset to 3.84 mA -
• Upper limit (infinitely adjustable) 23 mA, factory preset to 20.5 mA or optionally
set to 22.0 mA -
Load
• Without HART communication R
B
≤ (U
H
- 10.5 V)/0.023 A in Ω,
U
H
: Power supply in V
-
• With HART communication R
B
= 230 ... 500 Ω (SIMATIC PDM) or
R
B
= 230 ... 1100 Ω (HART Communicator)
-
Physical bus - IEC 61158-2
With polarity reversal protection - Yes
Accuracy To EN 60770-1
Reference conditions
(All error data refer always refer to the set span) Increasing characteristic, start-of-scale value 0 bar, stainless steel seal diaphragm, silicone oil fill-
ing, room temperature 25 °C (77 °F)) r: Span ratio (r = max. span/set span)
Error in measurement and fixed-point setting
(including hysteresis and repeatability)
Gage pressure,
front-flushed Absolute pressure,
front-flushed Gage pressure,
front-flushed Absolute pressure,
front-flushed
• Linear characteristic ≤ 0,075% ≤ 0,2%
- r ≤ 10 ≤ (0.0029 ⋅ r + 0.071)% ≤ 0,2%
- 10 < r ≤ 30 ≤ (0.0045 ⋅ r + 0.071)% ≤ 0,4%
- 30 < r ≤ 100 ≤ (0.005 ⋅ r + 0.05)% -
Long-term drift (temperature change ±30 °C
( ±54 °F))
≤ (0.25 ⋅ r)% every 5
years
≤ 0.25% every 5 years
© Siemens AG 2008