Description
Design
- ASME B40.100 & EN 837-3
Sizes
- 2½”
- 4″
- 6″
Accuracy class
- ±1.5% of span
Ranges
- Size 2½ (63 mm): 0…16″ H2O (40 mbar) tp 0…250″ H2O (600 mbar)
- Size 4″ (100 mm): 0…6″ H2O (16 mbar) tp 0…250″ H2O (600 mbar)
- Size 6″ (160 mm): 0…1″ H2O (2.5 mbar) tp 0…250″ H2O (600 mbar)
Working pressure
- Steady: full scale value
- Fluctuating: 0.9 x full scale value
Operating temperature
- Ambient: -4°F to +140°F (-20°C to +60°C)
- Medium: +212°F (+100°C) maximum
Temperature error
- Additional error when temperature changes from reference temperature of 68°F (20°C) ±0.6% of span for every 18°F (10°K) rising or falling.
Weather protection
- Weather resistant (NEMA 3 / IP54) with case filling NEMA 4X / IPP66
Pressure connection
- Material: 316L stainless steel
- Lower mount (LM) or center back mount (CBM) – 2½” (63 mm)
- Lower mount (LM) or lower back mount (LBM) – 4” & 6” (100 mm & 160 mm)
- 1/4” NPT or 1/2” NPT limited to wrench flat area
Capsule element
- Material: 316L stainless steel with Viton sealing ring
Movement
- Stainless steel
Zero Adjustment Dial
- White aluminum with black lettering
Pointer
- Black aluminum
Case
- 304 stainless steel with stainless steel bayonet ring
Window
- Laminated safety glass
- Acrylic for case filling (633.50)
Case fill
- Silicone – Type 633.50 (only available for full scale ranges ≥ 40” H2O)
