The SITRANS P280 is a pressure transmitter that features Wireless HART as the standard communication interface.
Also available is a wired interface to connect a HART modem:
Flexible pressure measurements
Save costs on writing for difficult installation conditions. Wireless technology offers cost advantages in cases where extensive wiring cots would normally apply.
It enables additional hitherto unfeasible measuring points, particularly for monitoring purposes.
Easy installation on moveable equipment parts
Enables cost-effective temporary measurements, for example for process optimizations.
Optimum addition to wired communication and expansion of solution options for system solutions in process automation
The SITRANS P280 has a robust aluminum enclosure and is suitable for outside use. It conforms with the IP65 safety class.
The operating temperature range is -40 to +80 °C (-40 to +176 °F). Power supply is provided through an integrated battery, which is available as an accessory. The device is only approved for operation with this battery.
The aerial features a rotatable joint which can be used for directional alignment. Wireless signals can thus be optimally received and transmitted.
A special highlight is the option for direct operation on the device. The operating strategy used in this case seamlessly integrates into the strategy of all new Siemens field devices.
Using the device’s control buttons, it is easy to turn the HART modem interface of the device on and off. The device can be put to passive status and reactivated at any time. This helps to extend the service life of the battery.
The SITRANS P280 transmitter features a ceramic measuring cell for gauge and absolute pressure measurements.
The SITRANS P280 is a WirelessHART field device for measuring absolute and gauge pressure.
The measuring ranges for absolute and gauge pressure measurements are 0 to 1.6, 10, 50, 200 and 320 bar (0 to 23, 145, 725, 2900 and 4641 psi).
The sensor is integrated into the transmitter casing.
On the wireless communication side, the transmitter supports the WirelessHART standard. For initial commissioning in particular, a HART modem can be connected to the transmitter. You can alternatively opt for simple and easy local operation using the pushbuttons w/o any additional handset devices.
It can be used in all industries and applications in non-explosive areas.
The SITRANS P280 can integrate itself into a WirelessHART network. It can be parameterized and operated through this network. Measured process values are transported via the network to the SIEMENS IE/WSN-PA link.
Field device data received by the IE/WSN-PA LINK is transmitted to the connected systems, for example the process control system SIMATIC PCS 7.
Connecting to SIMATIC PCS 7
The integration of field devices in SIMATIC PCS 7 and other process control systems can now be done seamlessly and cost-effectively with wireless technology, especially in situations where high wiring costs may be expected. Of particular interest are measuring points which are to be added and for which no MSR wiring is available.
Siemens WirelessHART devices are designed for optimum compatibility with products in the SCALANC W range.
Where larger distances between the IW/WSN-PA LINK and control systems need to be overcome, this connection can also be implemented on a wireless and cost-effective basis using the products of the SCALANCE W family.
Integration of a meshed network in SIMATIC PCS7
Configuration of the SITRANS P280 may be carried out as follows:
Initial start-up for the SITRANS P280 with SIMATIC PDM is generally carried out via a HART modem or the integrated local user interface, since the network ID and Join key must be set up on the device before it can be accepted and integrated into the WirelessHART network.
Once it is integrated into the network, the device can be conveniently operated with the WirelessHART network, the onsite HART modem or via the local user interface.