EJA440A High Static Gauge Pressure Transmitter

The high-performance EJA440A gauge pressure transmitter can be used to measure liquid, gas, or steam pressure.

Product Information

The high performance gauge pressure transmitter model EJA440A can be used to measure liquid, gas, or steam pressure. It outputs a 4 to 20 mA DC signal corresponding to the measured gauge pressure.

The EJA Series is available with BRAIN, HART, FOUNDATION™ fieldbus or PROFIBUS PA communication protocols.

		EJA440A general specifications

		EJA440A User's Manual Terms of Use for Manuals

		List of EJA series pressure transmitter general specifications

		List of EJA series pressure transmitter drawings

Features

-	Excellent performance and stability
	The EJA series uses a silicon resonant sensor formed from monocrystal silicon, a perfect material which has no hysteresis in pressure or temperature changes. The sensor minimizes overpressure, temperature change, and static pressure effects, and thus offers unmatched long-term stability.

-	Compact and light-weight design
	Half the weight of conventional models thanks to miniaturization of the casing with the amplifier ASIC, pressure cell structure, and flange. The ASIC uses the minimum number of parts and improves the reliability of the amplifier.

-	Fieldbus communication capability
	Fieldbus is a digital two-way communication system. It is a revolutionary technology for configuring instrumentation control systems and a promising successor to the standard 4 to 20 mA analog communication used in most field instruments today. EJA series offers two types of fieldbus models, FOUNDATION™ fieldbus Low Voltage Mode and PROFIBUS PA devices, which ensure interoperability between Yokogawa and other manufactures. As for software, the EJA series incorporates two AI function blocks that compute differential and static pressures to allow flexible configuration of instrumentation.

Specifications

		EJA440A Gauge Pressure Transmitter
		C Capsule	D Capsule
Range		-0.1 to 32 MPa (-15 to 4500 psi)	-0.1 to 50 MPa (-15 to 7200 psi)
Span		5 to 32 MPa (720 to 4500 psi)	5 to 50 MPa (720 to 7200 psi)
Accuracy		±0.12%	±0.12%
Degrees of protection		IP67, NEMA 4X, and JIS C0920 immersion proof
Certificates		FM, CENELEC ATEX, CSA, IECEx
Output		4 to 20 mA DC or FOUNDATION™ fieldbus or PROFIBUS PA 2-wire system with digital communication
Supply voltage		BRAIN and HART:10.5 to 42 V DC (10.5 to 30 V DC for Intrinsically safe type) Fieldbus:9 to 32 V DC (9 to 24 V DC for Entity model and 9 to 17.5 V DC for FISCO model)
Ambient temperature		-40 to 85 deg C (-40 to 185 deg F) (general use type) -30 to 80 deg C (-22 to 176 deg F) (with integral indicator)
Process temperature		-40 to 120 deg C (-40 to 248 deg F) (general use type)
Maximum overpressure		48 MPa (6750 psig)	60 MPa (8500 psig)
Mounting		2-inch pipe mounting
Wetted parts material	Capsule	SUS316L (Diaphragm material is Hastelloy C-276)
	Cover flange	SUS316
Housing		Cast aluminum alloy or SUS316 equivalent stainless steel (optional)