PLCs, Power Supplies & Others

Product Overview

The F9340GE measures absolute pressure with high precision using advanced piezoresistive sensing technology. This transmitter delivers stable readings for vacuum and low-pressure applications across various industries. Process engineers choose this instrument for its exceptional low-range performance and long-term reliability. The F9340GE incorporates digital temperature compensation to minimize environmental effects on measurement accuracy.

Key Specifications

Absolute Pressure Measurement

The F9340GE excels at absolute pressure measurement from 1 kPa up to 10 MPa. This transmitter provides accurate readings referenced to a perfect vacuum for true absolute measurement. The piezoresistive sensor delivers excellent sensitivity for low-pressure applications and vacuum monitoring. An accuracy of ±0.2% of full span ensures reliable data for critical processes. The sensor’s digital compensation algorithm corrects for temperature-induced drift effectively.

Overpressure Protection and Sensor Durability

This absolute pressure transmitter withstands overpressure up to 1.5 times its full scale rating. The F9340GE maintains measurement integrity during pressure surges and transient events. Such robust overload capability ensures uninterrupted operation in demanding process conditions. The transmitter recovers quickly from overpressure events without calibration shift. Consequently, plants benefit from reduced maintenance interventions and improved process reliability.

Communication and Output Flexibility

The F9340GE provides a standard 4–20 mA analog output with HART digital communication protocol. This loop-powered transmitter operates from a 12 to 45 V DC supply voltage. At 24 V DC, the device supports a load resistance of up to 700 Ω. Operators can configure zero and span values remotely via the HART interface. The transmitter also supports multivariable output for pressure and temperature readings when required.

Process Connections and Wetted Materials

Standard process connections feature 1/2 NPT female or Rc 1/2 threads for universal compatibility. The F9340GE wetted parts and diaphragm use 316L stainless steel construction. This material selection provides excellent corrosion resistance for most process fluids. The transmitter uses silicone oil as the standard fill fluid for reliable pressure transmission. Special fill fluids are available for oxygen service and extreme temperature applications.

Environmental Tolerance and Ingress Protection

The F9340GE operates reliably across process temperatures from -20°C to 85°C. Ambient temperature variations produce only ±0.03% effect per 10°C on measurement accuracy. The aluminum housing carries an IP65 and NEMA 4 rating for dust and water resistance. This enclosure protects the transmitter in outdoor and washdown environments effectively. Storage temperatures from -40°C to 85°C do not compromise instrument integrity or performance.

Integrated Display and Local Interface

The F9340GE includes a built-in LCD display for direct process reading at the installation point. This display shows absolute pressure values in user-selectable engineering units with clear digits. The display also presents diagnostic messages and configuration parameters for operator convenience. Field personnel can access the configuration menu using the external push buttons. Consequently, adjustments and troubleshooting can occur without removing the housing cover.

Physical Dimensions and Weight

The transmitter housing measures 135 mm in height, 100 mm in width, and 115 mm in depth. The F9340GE weighs 2.6 kg without optional mounting accessories. The electrical connection accommodates 1/2 NPT or M20 × 1.5 cable glands. Installers can mount the device onto pipe stands, wall brackets, or manifold assemblies.

Application Suitability

The F9340GE suits absolute pressure monitoring in vacuum systems and low-pressure processes. This transmitter excels in applications requiring reference to absolute zero for accurate readings. Its wide pressure range accommodates various process conditions from vacuum to moderate pressures. The device handles clean gases, vapors, and liquids in chemical and pharmaceutical industries. Furthermore, the F9340GE integrates with Yokogawa CENTUM VP and other DCS platforms.

Installation and Maintenance Guidance

Mount the F9340GE securely with the process connection facing downward to prevent liquid accumulation. Connect the impulse line to the pressure port using appropriate fittings and thread sealant. Wire the two-wire loop to the terminal block observing correct polarity. Configure zero and span settings using the HART communicator or local push buttons. Perform routine zero checks to verify measurement accuracy periodically. The transmitter requires minimal maintenance due to its robust solid-state sensor design.

Details