Design
Per EN 837-3 and HVAC regulations
Nominal size in inches
4 ½”
Accuracy
± 3.0 % of full span
± 5.0 % of full span ranges < 0.5 InWC (125 Pa)
Ranges
0 / 0.2 InWC (50 Pa), up to 0 / 50 InWC (12,500 Pa)
Compound ranges
Starting from -0.1 / +0.1 InWC (-25/+25 Pa), up to -6 / +6 InWC (-1,500 Pa...+1,500 Pa)
Pressure units
InWC (standard)
Other available units: kPa, Pa, mmWC, cmWC, mmHg
Pressure limitations
Steady: full-scale value
Fluctuating: full-scale value
Overpressure safety
80 InWC (20 kPa)
Maximum working pressure (static pressure)
80 InWC (20 kPa)
Temperature limitations
Ambient: -22 °F...176 °F (-30oC... + 80oC)
Media: 3 °F...122 °F (-16oC... + 50oC)
Temperature error
Additional error when temperature changes from reference temperature of 68°F (20°C) +0.5% of span for every 18°F (10°K) rising or falling.
Ingress protection
NEMA 3 (IP 54 per EN 60529 / IEC 529)
Process connection
Plastic, back-mounted
Two molded universal hose barb fittings, angled
For 1/8" / 3/16" or 1/4" hose ID
Separating diaphragm
Silicone rubber
Movement
Frictionless magnetic transmission
Dial
Aluminum white, scale of approx. 90 degrees of angle
Pointer
Black plastic
Mounting ring
Plastic, including 3 mounting screws
Window
Polycarbonate, UV stabilized
Options
NEMA 4 (IP 66) ingress protection
Red mark pointer
Internationally recognized traceable calibration certificates
Screw retained built-in version