P820
Ultra high purity pressure gauge, 316L double melt electropolished (Ra≤0.25 µm), 50 and 63 mm. For ultra-high-purity gas distribution systems in semiconductor, electronic, medical and pharmaceutical industry. Scale range 0 ~ 28 MPa, helium leak rate < 10⁻⁹ mbar·ℓ/sec.
- Nominal diameter
- 50 · 63 mm
- Accuracy
- Grade A: ±1.0% middle half, ±2.0% end quarters · Grade B: ±2.0% / ±3.0% (page 5)
- Scale range
- 0 ~ 28 MPa
- Working pressure
- Steady: 75% FS · Fluctuating: 67% FS
Materials
| Nominal diameter | 50 · 63 mm |
|---|---|
| Accuracy | Grade A: ±1.0% middle half, ±2.0% end quarters · Grade B: ±2.0% / ±3.0% (page 5) |
| Scale range | 0 ~ 28 MPa |
| Working pressure | Steady: 75% FS · Fluctuating: 67% FS |
| Working temperature | Ambient: -40 ~ 65°C · Fluid: max. 100°C |
| Temperature effect | approx. ±0.4% FS per 10°C from 20°C |
| Process connection | 316L SS double melt, electropolished Ra≤0.25 µm |
| Element | 316L SS — C-type bourdon <6 MPa · helical ≥6 MPa |
| Case | 304SS electropolished, with pressure relief |
| Cover and window | Twist-lock polycarbonate |
| Dial | White aluminium, black/red lettering, dual pressure scale (bar/psi) |
| Helium leak rate | less than 10⁻⁹ mbar·ℓ/sec |
| Certificates | ATEX II 2G Ex h IIC T6…T1 Gb · ATEX II 2D Ex h IIIC T85°C…T450°C Db |
Applications & Documents
Configure your order
Select the variables exactly as they appear in the manufacturer datasheet. The full part number is assembled automatically.
Nominal Diameter
single select · 2 valuesType of Mounting
single select · 3 valuesI — only available with diameter 50 mm
Accuracy
single select · 2 valuesConnection Type
single select · 4 valuesUnit
single select · 2 valuesRange
single select · 33 valuesPressure Connection Material
single select · 2 valuesSelect variables
More from this category
Why GPTech
Since 2000
Multidisciplinary expertise in gas and advanced piping systems.
UHP grade
Products for ultra-high-purity clean-gas systems.
Engineering support
From product selection to installation and maintenance.
Fast response
Professional quotes quickly — via RFQ or WhatsApp.
Applications
We serve hundreds of customers across diverse industrial segments.
Need a quote?
Talk to our engineer and get a fast, professional response.