Siemens SITRANS P300 7MF802 7MF812 Hygienic Pressure Transmitter

SITRANS P300 7MF802 7MF812 Hygienic Pressure Transmitter

Overview

The SITRANS P300 is a digital pressure transmitter for relative and absolute pressure. The conventional thread versions are available as process connections, as are flush-mounted versions. A large number of the flush-mounted versions are suitable for food and pharmaceutical applications, and satisfy the EHEDG and 3A hygiene requirements.

The output signal is a load-independent direct current from 4 to 20 mA or a PROFIBUS PA or FOUNDATION Fieldbus signal, which is linearly proportional to the input pressure. Communication is via HART protocol or PROFIBUS PA or FOUNDATION Fieldbus interface. The basic settings of the pressure transmitter can be made easily on-site by means of three buttons.

The SITRANS P300 has a single-chamber stainless steel enclosure. The pressure transmitter is approved for “intrinsically safe” type of protection. It can be used in zone 1 or zone 0.

Benefits

• High quality and service life
• High reliability even under extreme chemical and mechanical loads
• Extensive diagnostics and simulation functions
• Minimal conformity error
• Small long-term drift
• Wetted parts made of high-grade materials (e.g., stainless steel,Hastelloy)
• Measuring range 0.008 bar to 400 bar (0.1 psi to 5802 psi)
• High measuring accuracy
• Parameterization using control keys and HART and/or PROFIBUS PA or FOUNDATION Fieldbus

Application

The pressure transmitter is available in versions for gauge pressure and for absolute pressure. The output signal is always a load-independent direct current from 4 to 20 mA or a PROFIBUS PA or FOUNDATION Fieldbus signal, which is linearly proportional to the input pressure. The pressure transmitter measures corrosive, non-corrosive and hazardous gases, vapors and liquids.

It can be used for the following measurement types:

• Gauge pressure
• Absolute pressure

With appropriate parameter settings, it can also be used for the following additional measurement types:

• Level
• Volume
• Mass

The “intrinsically safe” Ex ia type of protection version of the transmitter can be installed in hazardous areas (Zone 1). The devices are provided with an EC type-examination certificate and comply with the respective harmonized European standards of ATEX.

Gauge pressure

This variant measures the gauge pressure of corrosive, non-corrosive and hazardous gases, vapors and liquids.

The smallest measuring span is 0.01 bar (0.15 psi), the largest 400 bar (5802 psi).

Level

With appropriate parameter settings, the gauge pressure variant measures the level of corrosive, non-corrosive and hazardous liquids.

For level measurement in an open vessel, you require one device; for level measurement in a closed vessel, you require two devices and a process control system.

Absolute pressure

This variant measures the absolute pressure of corrosive, non-corrosive and hazardous gases, vapors and liquids.

The smallest measuring span is 0.008 bar a (0.12 psi a), the largest is 30 bar a (435 psi a)