Description
The HIX series of Gefran are pressure transmitters with HART communication protocol for using in high temperature environment with explosive atmosphere presence.
The main characteristic of this series is the capability to read pressure of the media up to 350°C with a fluid- free technology. The pressure is transferred, through a high thickness membrane, directly to the silicon sensing element. The transduction of the stress is carried out by a special silicon micro-machined structure (MEMS). The operating principle is piezoresistive.
The SIL2 and PL d approvals make the product suitable for use in the Functional Safety applications, particularly in the process plants for the production of polymers, where it is an essential requirement.
TECHNICAL DATA OF HIX IMPACT
| Accuracy (1) | H <±0.25%FS M <±0.5%FS |
| Resolution | 16 Bit |
| Measurement range | 0..10 to 0..1000bar 0..150 to 0..15000psi |
| Rangeability | 3:1 |
| Maximum overpressure (without degrading performances) | 1.5 x FS (up to 1200 bar/ 17400 psi max) |
| Measurement principle | Piezoresistive |
| Power supply | 13…30Vdc |
| Maximum current absorption | 23mA |
| Output signal Full Scale FS | 20mA |
| Output signal at Zero (tolerance ± 0.25% FS) | 4mA |
| Calibration signal | 80% FS |
| Output short circuit ingress and reverse polarity protection | YES |
| Compensed temperature range hou- sing | 0…+85°C |
| Operating temperature range housing | -30…+85°C |
| Storage temperature range housin | -40…+125°C |
| Maximum diaphragm temperature | 350°C / 660°F |
| Thermal drift in compensated range: Zero / Calibration / Sensibility | < 0.02% FS/°C |
| Zero signal variation due to process temperature variation in range (20- 350°C) | < ± 1.2%FS |
| Span signal variation due to process temperature variation in range (20- 350°C) | < ± 1%FS |
| Contact diaphragm material | 15-5 PH with GTP+ coating |
| Thermocouple (model HIX2) | STD: type “J” (isolated junction) |
| Protection degree (with 6-pole female connector CON300) | IP66 |
| SIL2 certification PL d certification | IEC/EN 62061 / IEC 61508 EN ISO 13849 |
FS = Full scale output (1) BFSL method (Best Fit Straight Line): includes combined effects of Non-Linearity, Hysteresis and Repeatability (according to IEC 62828-2).
For products sold to EAC Customs Union (EAC mark), due to a different method of calculation, the limits of accuracy are the following:
_M = +-1%
_H = +-0,5%
