SIEMENS
6/165
Siemens IK PI · 2015
Industrial Wireless Communication
WirelessHART
SITRANS P280 for gauge and absolute pressure
6
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Technical specifications
SITRANS P280 WirelessHART Pressure Transmitter
Mode of operation
Measuring principle
piezo-resistive
Measured variable
Gauge and absolute pressure
Gauge pressure input
Measuring range
Overload limit/Burst pressure
0 ... 1.6 bar (0 ... 23 psi)
4 bar (58 psi)
0 ... 10 bar (0 ... 145 psi)
20 bar (290 psi)
0 ... 50 bar (0 ... 725 psi)
100 bar (1 450 psi)
0 ... 200 bar (0 ... 2900 psi)
400 bar (5 801 psi)
0 ... 320 bar (0 ... 4641 psi)
640 bar (9 282 psi)
Units
mbar, bar, m4H
2
O, i4H
2
O, atm, Torr,
gcm², kgcm², Pa, kPa, MPa, psi,
mmHG, mmH
2
O, ftH
2
O, inHG, inH
2
O
Absolute pressure input
Measuring range
Overload limit/Burst pressure
0 ... 1.6 bar a (0 ... 23 psi a)
4 bar a (58 psi a)
0 ... 10 bar a (0 ... 145 psi a)
20 bar a (290 psi a)
0 ... 50 bar a (0 ... 725 psi a)
100 bar a (1450 psi a)
0 ... 200 bar a (0 ... 2900 psi a)
400 bar a (5801 psi a)
0 ... 320 bar a (0 ... 4641 psi a)
640 bar a (9282 psi a)
Units
mbar, bar, m4H
2
O, i4H
2
O, atm, Torr,
gcm², kgcm², Pa, kPa, MPa, psi,
mmHG, mmH
2
O, ftH
2
O, inHG, inH
2
O
Output
Output signal
2.4 GHz Wireless signal with TSMP
(Time Synchronized Mesh Protocol)
Measuring accuracy
According to IEC 60770-1
Error in measurement at
limit setting including hysteresis
and reproducibility
typically 0.17 % of span,
max. 0.25 % of sensor span
Long-term stability
max. ± 0.25 % of sensor/year span
Influence of ambient temperature
max. ± 0.2 %/10 K of sensor span
Rated conditions
Ambient conditions
• Ambient temperature
-40 ... +80 °C (-40 ... +176 °F)
(in ambient temperatures
below -20 °C (-4 °F) and
above +70 °C (158 °F),
readability of the display is limited.)
• Storage temperature
-40 ... +85 °C (-40 ... +185 °F)
• Relative humidity
< 95 %
Climatic class
4K4H in accordance with
EN 60721-3-4(stationary use at loca-
tions not protected against weather)
Degree of protection
IP65/NEMA 4
Permissible medium temperature
-40 ... 85 °C (-40 ... +185 °F)
Design
Enclosure material
low-copper die-cast aluminum,
GD-AISi12 (Fe)
Shock resistance
in accordance with
DIN EN 60068-2-29 / 03.95
Resistance to vibration
in accordance with
EN 60068-2-6/ 12.07
Weight
• without battery
1.5 kg (3.31 lb)
• With battery
1.6 kg (3.53 lb)
Dimensions (W x H x D)
See Dimensional drawing
Process connection
• G½B male thread to EN 837-1
• ½-14 NPT
Sensor break
Is recognized
Displays and controls
Display (with illumination)
• Size of display
104 x 80 pixels
• Number of digits
adjustable
• Number of spaces after comma
adjustable
Setting options
• on site with 3 buttons
• with SIMATIC PDM
or HART Communicator
Auxiliary power
Battery
3.6 V DC
Communication
Radio
WirelessHART V7.1 conforming
Transmission frequency band
2.4 GHz (ISM-Band)
Transmission range under reference
conditions
Up to 250 m (line of sight)
in outside areas
Up to 50 m (greatly dependent on
obstacles) in inside areas
Communication interfaces
• HART communication with HART
modem
• WirelessHART
Certificates and approvals
Wireless communication approvals
R&TTE, FCC
General product safety
CSA
US/C
, CE, UL
Classification according to pressure
equipment directive (PED 97/23/EC)
Gases: Fluid group 1
Liquids: Fluid group 1;
meets requirements as per Section 3,
Subsection 3 (good engineering
practice)
SITRANS P280 WirelessHART Pressure Transmitter
© Siemens AG 2014