Absolute pressure measurement
Fields of application
The FKH direct-mount absolute pressure transmitter enables precise measurement of any pressurized gas or fluid, using a fixed vacuum pressure as a reference.
Benefits
FKH direct-mount pressure transmitters in the FCX-AIV family accurately measure absolute pressure and convert it into a directly proportional 4-20 mA output signal. The heart of the measuring element is a micro-capacitive silicon transducer that has proven its worth in the process industry. The digital signal processing carried out by the electronics unit ensures outstanding accuracy and stability. The FCX-AIV family of pressure transmitters complies with integrity and safety levels SIL 2 (HFT=0) and SIL 3 (HFT=1) in accordance with standards IEC 61508 and IEC 61511.
| Housing | L- or T-shaped housing |
| Measuring ranges (kPa) [e.max.] | 130 500 3000 |
| Weight per kg (without indicator) | 1,7 |
| Accuracy | ± 0.2% of the measurement range set as standard. |
| Materials in contact with the process | Stainless steel 316L, Stainless steel 316L + Gilding |
| Case materials | Low-copper aluminum alloy with polyester coating polyester coating or 316L stainless steel. |
| Membrane materials | Stainless steel 316L Hastelloy-C |
| Stability | ±0.2% of maximum scale for 10 years (if digit 6 codes "3", "4") |
| Elevation / Deletion | From -100 to +100% of maximum 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 +120°C (versions for higher temperatures are available) |
| Ambient temperature | From -40° to +85°C |
| Supply voltage | 10.5 to 45V DC |
| Output signal / Load resistance | 4-20 mA / 250 Ω typical |
| Damping | Configurable between 0.04 and 32 secs |
| Zero and span adjustment | Via external sensor screw, local three-button indicator or HART™ protocol |
| Electrical connections | M20x1.5" / 1/2 - 14 NPT / Pg13.5 |
| Options | Digital indicator, degreasing treatment, oxygen service, chlorine service, additional stainless steel identification plate |
Certificate: Declaration of conformity UKCA pressure transmitters series FCX-AIV-V6
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Absolute pressure transmitter - FKH
Reference : FKH
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