A high pressure gauge is one of the most valuable troubleshooting tools available in a Water Jet Cutting system. Many systems do not include a high pressure gauge; instead they utilize a hydraulic pressure gauge, which is not as accurate. Standard cutting pressures range between 45,000 and 60,000 psi, which is why the need for a specialized pressure sensing instrument is crucial for both reliability and accuracy.

The Standards Behind Extreme High Pressure Gauges

Safety is a critical consideration in high pressure applications such as pumps and compressors, high pressure processing, test equipment and systems, and water jet cutting. Historically, EN 837-1 was the only standard that addressed mechanical measuring instruments, and it only applied to pressures of 23,000 psi and below. Anything higher had no dedicated safety standard.

Established in 2017, DIN 16001 was the first standard to specify safety certification parameters for high pressure gauges, covering ranges above 23,000 psi through 145,000 psi (nominal sizes 100 and 160). It defines specific test procedures for production type and routine testing.

Gauges built to DIN 16001 must also meet safety category S3, which requires a laminated safety glass lens, a case with a solid front wall between the measuring system and the dial, and a blowout back. In the event of a failure, these features protect operating personnel by directing media and gauge components out the back of the case rather than the front. DIN 16001 also limits continuous operating pressure to 75% of full scale. The gauge can briefly withstand full scale pressure but should not be exposed to pressure beyond it.

NOSHOK 402/502 Series Gauges

Pressure ranges from 0 psi to 30,000 psi through 0 psi to 85,000 psi Robust 6” design includes a solid front, safety case with blow-out back Stainless Steel case with NiFe alloy and 316L Stainless Steel wetted parts Standard 9/16 inch, 18 UNF 2B high pressure cone connection Accuracy is 1.6% full scale on ranges up to 40,000 psi, with 1% optional increased accuracy available; 1% full scale on ranges from 50,000 to 75,000 psi; the 85,000 psi range is 1.6% full scale Compliant with DIN 16001, exceeding the standard's minimum requirements by more than 20 times in qualification cycle testing Backed by an extended warranty, with most ranges available from stock for quick delivery

Benefits of DIN 16001 compliance include improved load cycle stability, improved calibration stability, significantly longer service life, and reduced downtime, resulting in a lower total cost of ownership.

NOSHOK PT41 Series High Pressure Transmitters
Ranges from 23,000psig to 145,000 psig, picking up where gauge grade DIN 16001 pressures begin

Standard accuracy of 0.5% Span, with 0.25% Span available as an optional upgrade Replaces the legacy 615 Series and is part of the current PT Series lineup, which also replaces the legacy 100, 200 and 300 Series transmitters Available with 4 to 20 mA current or voltage outputs (0 to 10 Vdc, 0 to 5 Vdc, etc.) and a full complement of optional electrical connectors