NAH 8254 – Hydraulic Pressure Switch
The hydraulic pressure switch NAH 8254 with 1 or 2 switching outputs and increased accuracy of 0.3% has an exceptionally long-term stable thin-film-on-steel sensor cell with triple (optionally 5-fold) overpressure protection. The robust design and the wide temperature range from -40°C to +125°C make the NAH 8254 the ideal solution when exact and reliable switching signals under rough environmental conditions are required.
| Applications | Machine tools, Hydraulics, Process technology |
| Category | Electronic pressure switches |
| Accuracy @ 25°C typ. | ± 0.3 % FS typ. |
| Dielectric strength | 50 VAC, 50 Hz |
| Measuring principle | Thin-film-on-steel |
| Vibration | 15 g RMS (20...2000 Hz) (EN60068-2-64) 25 g sin (80...2000 Hz), 1 oct./min, (1x @ 25°C) (EN60068-2-6) |
| NLH @ 25°C (BSL) typ. | ± 0.2 % FS typ. |
| Pressure connections | G1/4" m, G1/4" m (Manometer); 1/4"NPT m, 1/8"NPT m; 7/16"-20UNF f, SAE J512; 7/16"-20UNF m, SAE4 (J1926); 7/16"-20UNF m, DIN3866; 9/16"-18UNF m, SAE6 (J1926); R1/4" m, DIN3858; R1/4" m, DIN2999; R1/8" m, DIN3858; M10x1 |
| Media temperature | –40°C ... +125°C |
| Shock | 50 g / 11 ms 100 g / 6 ms Male electrical plug M12x1 (EN60068-2-27) 2) |
| Electrical connections | M12x1; Cable IP67 (IP68) |
| Long term stability 1 year typ. | < ± 0.1 % FS typ. |
| Ambient temperature | –40°C ... +125°C (Cable PVC 22: -5°C ... +60°C) (Cable PUR 24: -40°C ... +70°C) |
| Protection | IP65, IP67, IP68 |
| Output signal | Switching output: 1 or 2 PNP transistors |
| TEB typ. @ -25 ... +85°C | ± 1.0 % FS typ. |
| Measuring range | 0 ... 0.2 to 0 ... 600 bar 0 ... 3 to 0 ... 7500 psi |
