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/Bursting pressure

0 ... 2 bar g (0 ... 29 psi)

5 bar g (72.5 psi g)

0 ... 10 bar g (0 ... 145 psi)

50 bar g (363 psi g)

0 ... 50 bar g (0 ... 725 psi)

250 bar g (1740 psi g)

0 ... 200 bar g (0 ... 2900 psi)

650 bar g (7250 psi g)

0 ... 400 bar g (0 ... 5800 psi)

650 bar g (7250 psi g)

Units

mbar, bar, mmH₂O, inH₂O, atm, Torr, gcm , kgcm , mPa, KPa, Pa, psi, mmHG, mmH₂O, ftH₂O, inHG, inH₂O

Absolute pressure input

Measuring range

Overload limit/Bursting pressure

0 ... 2 bar a (0 ... 29 psi a)

5 bar a (72.5 psi a)

0 ... 10 bar a (0 ... 145 psi a)

50 bar a (363 psi a)

0 ... 50 bar a (0 ... 725 psi a)

250 bar a (1740 psi a)

0 ... 200 bar a (0 ... 2900 psi a)

650 bar a (7250 psi a)

0 ... 400 bar a (0 ... 5800 psi a)

650 bar a (7250 psi a)

Units

mbar, bar, mmH₂O, inH₂O, atm, Torr, gcm , kgcm , mPa, KPa, Pa, psi, mmHG, mmH₂O, ftH₂O, inHG, inH₂O

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 incl. 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. typically 0.07 %/10K, max. 0.2 %/10K of span of sensor

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 locations 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

Shock resistance

in accordance with EN 60068-2-29 / 03.95

Resistance to vibration

in accordance with EN 60068-2-6/ 12.07

20 f 2000 Hz

0.01 g /Hz

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

• G B male thread as per EN837-1
• -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 supply

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

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)