Design EN 837-3 |
Weather protection Weather resistant (NEMA 3 / IP54)-dry
case Weather tight (NEMA 4X / IP65)-liquid-filled case |
Sizes 4¡± & 6¡± (100 & 160 mm) |
Pressure connection and lower diaphragm housing 1¡± 150#
RF flange or 2¡± 150# RF flange |
Accuracy class ¡¾ 2.5% of span |
Case and upper diaphragm housing Material: stainless
steel Case with blowout disk and stainless steel bayonet ring |
Ranges Vacuum / Compound to 300 psi Pressure from 10¡±
H2O to 250¡± H2O (6¡± flange diameter) Pressure from 10 psi to 600 psi (4¡±
flange diameter) or other equivalent units of pressure or vacuum |
Diaphragm element ¡Â100¡± H2O: 316 stainless steel with
PTFE lining > 100¡± H2O: Duratherm (NiCrCo-alloy) with PTFE lining All
ranges with FPM (Viton) sealing gasket |
Working pressure Steady: full scale
value Fluctuating: 0.9 x full scale value |
Movement Material: stainless steel |
Overpressure safety 5 x full scale value, max. 600
psi |
Dial White aluminum with black lettering |
Operating temperature Ambient: -4¡ÆF to +140¡ÆF (-20¡ÆC to
+60¡ÆC) Medium: +212¡ÆF (+100¡ÆC) maximum |
Pointer Black aluminum, adjustable-Type 452.50 Black
aluminum, non-adjustable-Type 453.50 |
Temperature error Additional error when temperature
changes from reference temperature of 68¡ÆF (20¡ÆC) ¡¾0.8% for every 18¡ÆF (10¡ÆC)
rising or falling. Percentage of span. |