200DPG Differential Pressure Gauge – Piston Instrument

Our new line of high-precision, high-pressure differential pressure gauges is available into the 2% accuracy range. Through innovative design and manufacturing methods, these new products firmly establish our price and quality leadership in this specialty industry.



A close-coupled magnetic rack and pinion design uses high-quality magnets to achieve superior accuracy and the most linear scales in the industry. Our gauges are calibrated in the ascending pressure mode for the most common applications, such as filtration monitoring.  For special requirements, such as leak detection, we can calibrate the gauges in descending mode.

  • Ranges from 3.5 to 1000 PSID
  • Highest system pressure: 6,000 PSI
  • Great for filter indication
  • Hydraulic systems
  • Lower-cost precision gauge
  • Individually tested and serialized. Certification of calibration is available.

Accuracy: ±2% of the FSD (Ascending)
Migration: Minor from high to low port
Range: 0-5 to 0-150 psi or equivalent range in other units
First Marking on The Scale: 20% of the FSD
Sensing Element: Piston
Wetted Parts: Body material, SS 302 Spring, Teflon, & Ceramic Magnet
Case Material: Stainless Steel (SS 304)
Dial Size in Inch (mm): 2″(50), 2.5″(63), 3.5″(80), 4″(100), 4.5″(115) & 6″(150)
Mounting: Direct, front flange & 2″ pipe mounting
Maximum Working Pressure: 3000/6000 psi. (3000 psi for Alu. & 6000 psi for SS body)
Maximum Process Temperature: 175ºF/80ºC
Body Material: Aluminum, Brass, SS 316 & Monel
Seals: Buna-N, Viton & EPDM
Window: Float glass (Std.), toughened glass & acrylic on request.
Connection: 1/4″ NPT(F) Std. optional BSP(F)
Porting: In-line, rear, bottom
Over Range Protection: Up to the max. working pressure from high & low side
Protection For Gauge & Switch: IP65/NEMA-4