NOVUS NP640 series relative pressure transmitters are specified by thread type and pressure range. Installation is simple — the transmitter simply screws into place and can be used straight from the box with the default factory configuration, or rescaled up to 1/3 FSD (Full Scale Deflection) using the optional TxConfig-DIN43650 configuration application.
Seeking to meet the demands of a high-tech market, NP640 is the best-performing configurable relative pressure transmitter for sophisticated, high-accuracy applications. With a customisable reading range from 0 to 400 bar and an accuracy of ±0.25% FS thanks to its oil-bathed sensor element, its wide market acceptance and stable supply chain give the NP640 a strong position within the NP family, being compatible across a range of materials and price points.
It's applied in pressurised lines for processing food and beverages, monitoring water for cooling in compressed air networks, checking the efficiency of booster pumps, and more.
✅ 3 Year Manufacturer Warranty — backed by our UK-based technical support
Technical Details
Process connection: external thread ¼ NPT, ½ NPT, ½ BSP or ¼ G
Rangeability of the measurement: 3:1
Environmental conditions: -20 to 70°C
Materials in contact with the medium: 316L stainless steel
Output: 4-20 mA 2-wire
Electrical connection: DIN 43650 (EN 175301-803)
Overpressure: 2 times the nominal pressure
Dynamic response: <30 ms
Power supply: 11-33 Vdc
Relative pressure ranges available: 0.1 MPa (1 bar), 0.4 MPa (4 bar), 1 MPa (10 bar), 2 MPa (20 bar), 4 MPa (40 bar), 10 MPa (100 bar)
Accuracy, including hysteresis, linearity and repeatability: 0.25% full scale (1.0% for the 100 bar model)
Dimensions: ¼ NPT: Ø27 x 88mm. ¼ G: Ø27 x 89.4mm. ½ NPT: Ø27 x 92.5mm. ½ BSP: Ø27 x 86.5mm
Frequently Asked Questions
Do I need to configure this before use?
No — it works straight from the box with the default factory configuration; the TxConfig-DIN43650 application is only needed if you want to rescale the range.
Can I add a local digital readout?
Yes — our LoopView loop-powered indicator plugs onto the same DIN 43650 connector for a local reading.
What's the connection thread type?
Available in ¼ NPT, ½ NPT, ½ BSP, or ¼ G — check your process connection before ordering.
Industry Applications
- Food & Beverage Processing — 316L stainless steel construction suits pressurised process lines.
- Compressed Air Networks — monitors cooling water pressure and system efficiency.
- Booster Pump Monitoring — checks pump efficiency and system pressure in real time.