High gauge pressure measurement
Fields of application
Designed for high-pressure hydrogen applications such as production, compression, storage (including cryogenic), H₂ refill stations, hydrostatic testing, pressure control in critical equipment and infrastructure.
Features
The FKR pressure transmitter with gold plating, from Fuji Electric's FCX-AIV series, is specially designed for demanding high-pressure hydrogen environments. It incorporates an Inconel® 625 membrane coated with a thin layer of gold, offering excellent chemical inertness against H₂. This coating significantly reduces membrane permeation and hydrogen embrittlement phenomena, preserving the sensor's mechanical integrity over time. This chemical robustness enables reliable use in critical applications such as compression, cryogenic storage or filling stations. Equipped with a silicon piezoresistive transducer and digital signal processing, it guarantees accurate, stable and long-lasting gauge pressure measurement, even under the most severe conditions.
| Type | Intelligent 4-20 mA Pressure transmitter with HART™ 7 protocol |
| Housing | L- or T-shaped housing |
| Measuring ranges (kPa) [e.max.] | 70 000 150 000 |
| Weight per kg (without indicator) | 1,5 |
| Accuracy | ±0.065% |
| Materials in contact with the process | Inconel® 625 Stainless steel 318 LN Stainless steel 316L |
| Housing materials | Low-copper die-cast aluminum alloy, coated with polyester (standard) or 316L stainless steel (optional). |
| Membrane materials | Inconel® 625 and Gilding |
| Stability | ±0.1% of upper range limit for 5 years |
| Elevation / Deletion | -1 barg at 100% of full scale |
| Scale setting range | From 1 to 1/16 of maximum scale |
| Measurement cycle | 40 ms |
| Communication protocol | HART™ 7 communication protocol |
| 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) |
| Power supply | 10.5 to 45 V DC |
| Output signal / Load resistance | 4-20 mA / 250 Ω typical |
| 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 |
| Options | Digital indicator, degreasing treatment, oxygen service, chlorine service, additional stainless steel identification plate |
Gauge pressure transmitter for hydrogen - FKR with gold plating
Reference : FKR-HYDROGENE
