Gauge pressure transmitter - high pressure - 70 MPa - FKR

High gauge pressure measurement

Fields of application

Designed for pressure monitoring in critical industrial applications such as oil & gas, cryogenics, hydraulic presses and test benches.

Features

High accuracy: ±0.065% of set measurement range
Measures very high pressures up to 70 MPa (700 bar / 10,152 psi)
4-20 mA output with HART™ communication 7
Robust materials (Inconel® 625, Inox 318LN and Inox 316L) and design for extreme environments
SIL2 / SIL3 certification and ATEX/IECEx compatibility
No-open configuration thanks to magnetic buttons

Reference: FKR-06
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Specifications
Documentations

Specifications

The FKR gauge pressure transmitter is specially designed for industrial applications requiring reliable and accurate measurement of very high pressures, up to 70 MPa, i.e. 700 bar, 70,000 kPa or approx. 10,152 psi. Thanks to its piezoresistive silicon transducer and digital processing electronics, it offers excellent long-term stability and outstanding accuracy. It meets the most stringent safety requirements (SIL2/SIL3) and integrates easily into control systems thanks to its 4-20 mA output with HART™ protocol. Robust and adaptable, it is perfectly suited to harsh environments and critical processes under high stress, notably in hydrogen production systems, industrial hydraulic presses, plastic injection machines, supercritical steam plants, hydrotreating or hydrocracking units, hydraulic control of subsea valves, high-pressure cryogenics, high-pressure systems in civil nuclear power and CO₂ storage and distribution.

Type		Intelligent 4-20 mA Pressure transmitter with HART™ 7 protocol
Housing		L- or T-shaped housing
Measuring ranges [e.max.]		From 4.375 to 70 MPa
Measurement limit		-100 to 70,000 (kPa)
Permissible overpressure		105 MPa
Weight per kg (without indicator)		1,5
Accuracy		From 1/10 to 1/1 of URL: ±0.065 % of span From 1/16 to 1/10 of URL: ±(0.015 + 0.05 × 0.1 × URL/span) % of span
Materials in contact with the fluid	Membrane	Inconel® 625 (with or without gold plating)
	Connection	Stainless steel 318LN or Inconel® 625
	Sensor body	Stainless steel 316L or Inconel® 625
Non-contact materials	Housing	Cast aluminum (polyester coating) or 316L stainless steel
	Filling fluid	Silicone or mineral oil
Stability		±0.1% of upper range limit for 5 years
Elevation / Deletion		Zero offset: ±0.2% of max. scale (URL)
Scale setting range		From 1 to 1/16 of maximum scale
Measurement cycle		40 ms
Communication protocol		HART™ 7 communication protocol only
Response time		Time constant: 80 ms Dead time: approx. 60 ms Total time ≈ 140 ms
Process temperature		From -40 to 100°C
Ambient temperature		From -40 to +85°C -20 to +80°C (with optional LCD unit) -40 to +60°C (with optional lightning arrester)
Storage temperature		From -40 to +90°C
Temperature effects		Zero offset: ±(0.075 + 0.125 × URL/extent) % / 28 °C Total effect: ±(0.095 + 0.0125 × URL/extent) % / 28 °C
Power supply		10.5 to 45 V DC
Output signal / Load resistance		4-20 mA / 250 Ω typical + HART™ (NAMUR NE 43 compliant)
Dielectric strength		500 V AC for 1 min (between circuit and earth)
Insulation resistance		> 100 MΩ at 500 V DC (between circuit and ground)
Damping		Configurable from 0.04 to 32 seconds
Zero and span adjustment		Via external sensor screw, local three-button indicator or HART™ protocol
Electrical connections		M20×1.5" / 1/2 -14 NPT / Pg13.5
Assembly		Direct or Ø60.5 mm tube mounting (U-bolt stainless steel 304L/316L)
Process connection		AutoClave F250C (F) or F250C (M) (adapter) or 1/4-18 NPT (F) (adapter)
Compatibility		CEM : EN 61326-1, EN 61326-2-3, EN 61326-3-1 ATEX/ IECEx / cCSAus : Intrinsically safe (Ex ia), Explosion-proof enclosure (Ex d), XP/IS/NI Division 1 and 2
Options		Digital indicator, degreasing treatment, oxygen service, chlorine service, additional stainless steel identification plate