Siemens MS Series, Инструкция по эксплуатации

Страница: 114 / 130

SITRANS P, MS series
114
C79000-B5674-C40-04
Technical Data
Technical data
Application See page
73
Mode of operation
Measuring principle
See page
74
Piezo-resistive
Input
Measured variable Pressure
Measuring range
• Span (continuously adjustable) 0.03 to 400 bar
(0.44 to 5802 psi)
• Lower measuring limit
- Measuring cell with silicone oil filling 30 mbar (0.44 psi) (absolute)
• Upper measuring limit 100% of max. span
• Start-of-scale (cont. adjustable) Between the measuring limits
Output
Output signal 4 to 20 mA
• Lower limit (continuously adjust-
able)
3.55 to 23 mA, factory-set to
3.84 mA
• Upper limit (continuously adjust-
able)
3.55 to 23 mA, factory-set to
20.5 mA
• Ripple (without HART communica-
tion)
I
pp
≤
0.5 of max. output current
• Electric damping
- Adjustable time constant (T
63
) 0 to 100 s in steps of 0.1 s, fac-
tory-set to 0.1 s
• Current transmitter Adjustable from 3.55 to 23 mA
Signal on alarm Adjustable from 3.55 to 23 mA,
factory-set to 3.6 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
- HART communicator
- SIMATIC PDM R
B
=
230 to 500
Ω
R
B
=
230 to 1100
Ω
Characteristic Linear rising or falling
Accuracy
Reference conditions: Increasing characteristic, start-of-scale value
0 bar (0 psi), stainless steel seal diaphragm, silicone oil filling and limit
point setting, r = max. span/set span = span ratio
Error in measurement (at limit setting,
including hysteresis and repeatabil-
ity)
≤
0.25% at r
≤
10
≤
0.5% at 10 < r
≤
30
Response time (T
63
, without electric
damping)
Approx. 0.3 s
Long-term drift
≤
(0,1 · r)% / 12 months with
max. span
Ambient temperature effect
• At -10 to +60 °C (14 to 140 °F)
≤
(0.2 · r + 0.4)%
• At -40 to -10 °C and +60 to +85 °C
(-40 to +14 °F and 140 to 185 °F)
≤
(0.3 · r + 0.35)% / 10 K
(
≤
(0.3 · r + 0.35)% / 18 °F)
Influence of mounting position
≤
0.05 mbar per 10° inclination
(can be corrected using zero
correction)
Influence of power supply
≤
0.005% per 1 V
change in voltage
Rated operating conditions
Installation conditions
• Installation instructions Process connection pointing
vertically downwards
Ambient conditions
• Ambient temperature (observe temperature class in potentially explo-
sive atmospheres)
- Measuring cell with silicone oil filling -40 to +85 °C (-40 to +185 °F)
- Digital display -30 to +85 °C (-22 to +185 °F)
• Storage temperature -50 to +85 °C (-58 to +185 °F)
• Climate class
- Condensation Permissible
• Degree of protection (to EN 60 529) IP 65
• Electromagnetic compatibility
- Emitted interference To EN 50 081-1
- Noise immunity To EN 61 326 and
NAMUR NE 21
Medium conditions
• Process temperature
- Measuring cell with silicone oil filling -40 to +100 °C (-40 to +212 °F)
• Possess temperature limits See process temperature
• Process pressure limits See page
116
Design
Weight (without options) Approx. 1.5 kg (3.3 lb)
Dimensions See Fig.
26, page 116
Material
• Wetted parts materials
- Connection shank Stainless steel, mat. No. 1.4404/
316L
- Seal diaphragm Stainless steel, mat. No. 1.4404/
316L
• Non-wetted parts materials
- Electronics housing Die-cast aluminum, low in cop-
per, GD-ALSi 12, polyester-
based lacquer, stainless steel
rating plate
- Mounting bracket (option) Steel, galvanized and yellow-
passivized, or stainless steel
Measuring cell filling Silicone oil
Process connection Connection shank G½A to
DIN EN 837-1, female thread
½ -14 NPT
Electrical connection Screw terminals, cable inlet via
screwed gland Pg 13.5
(adapter),
M20 x 1.5 or ½ - 14 NPT, or
Han 7D/Han 8U plug
Displays and controls
Input keys 2 for local programming, posi-
tioned behind LCD
Digital display Built-in, cover with window
(option)
Power supply
Terminal voltage on transmitter DC 10.5 to 45 V
DC 10.5 to 30 V in
intrinsically-safe mode
Ripple U
pp
≤
0.2 V (47 to 125 Hz)
Noise U
rms
≤
1.2 mV (0.5 to 10 kHz)