Low Pressure Diaphragm Gauges

Diaphragm gauges consist of a corrugated metal diaphragm which deflects under pressure.  When pressure is applied to the diaphragm it's movement is transmitted through a connecting rod to an amplifying lever and gears which operates a pointer.  The pointer will then indicate the pressure on a appropriate scaled dial.

Standard Calibrations

0-12"  water gauge          0-30  mbar g                0-60"  water gauge          0-160 mbar g
0-20"  water gauge          0-50  mbar g                0-100" water gauge          0-250 mbar g
0-40"  water gauge          0-100 mbar g                0-160" water gauge          0-400 mbar g

Direct Mounting Bottom Connection

  • TYPE 65: 100mm & 150mm diameters

  • Standard calibrations (as shown above), vacuum options available

  • ±1½% of maximum scale value accuracy

  • Temperature shift up to 2% over 30°C can be expected

  • Steel case and brass bezel black enamel finish

  • Beryllium copper diaphragm pressure responsive element

  • Brass pressure chamber with d" BSP Thread

  • Choice of process connections & alternative wetted parts

  • Optional all stainless steel construction TYPE 65S

  • Optional overload protection up to 7 bar or full vacuum

Front Flange Mounting, Centre Back Connection

  • TYPE 66: Three hole fixing 100mm & 150mm diameters

  • TYPE 67: Clamp fixing 100mm & 150mm diameters

  • Standard calibrations (as shown above), vacuum options available

  • ±1½% of maximum scale value accuracy

  • Temperature shift up to 2% over 30°C can be expected

  • 100mm gauge with mild steel case and bezel with black enamel finish

  • 150mm gauge aluminium case, A.B.S. plastic bezel with black enamel finish

  • Beryllium copper diaphragm pressure responsive element

  • Brass pressure chamber with ¼" BSP Thread

  • Choice of process connections available

  • Optional overload protection up to 7 bar or full vacuum

Wall Mounting

  • TYPE 68: 100mm and 150mm diameter

  • Standard calibrations (as shown above)

  • ±1½% of maximum scale value accuracy

  • Temperature shift up to 2% over 30°C can be expected

  • 100mm gauge mild steel case & brass bezel both with black enamel finish

  • 150mm gauge aluminium case & brass bezel both with black enamel finish

  • Beryllium copper diaphragm pressure responsive element

  • Brass pressure chamber with c" BSP female thread

  • Choice of process connections available

  • Optional overload protection up to 7 bar or full vacuum