Perma-Cal 6 in. Caisson Gauge, 0.25% Acc. 450 MSW, Black, Rear Flange, 1/4 in. MNPT Bottom Fitting, Custom B/W Dial

Perma-Cal® caisson gauges incorporate a Helical Bourdon Tube sealed within a capsule.  Unlike standard pressure gauges which indicate the pressure relative to the ambient environment, Caisson Gauges indicate the pressure relative to the pressure within the capsule.

Accuracy

• Ascending: ±0.25% Full Scale | Descending ±0.50% Full Scale
• NIST Traceable Standard Calibration Certificate Included, per ASME B40.100
• Accuracy exceptions. Contact Amron for details.
• Cleaned for oxygen service

Case

• Size: 6 in.
• Material: ABS plastic
• Flange Position: Rear
• Pressure Range: 450 MSW
• Color: Black
• Connection: 1/4 in. Male NPT 316 stainless steel bottom fitting (6 o'clock)
• Window: Acrylic

Dial

• Stainless steel, powder coated finish, white with black markings
• Pointer Type: Test (knife-edged, precision reading), anodized aluminum, zero-adjustable
• Mirror Band: Yes
• Pointer Dampening: No
• External Zero Adjust: Yes
• Custom black and white dial

Operating Temperature

• Process Temperature: -65⁰ F to 250⁰ F / -53.89⁰ C to 121.11⁰ C
• Ambient Temperature: -65⁰ F to 190⁰ F / -53.89⁰ C to 87.78⁰ C

Pressure Rating

• Burst: 500% F.S. pressure or 25,000 psi
• Proof: 150% F.S. pressure

Wetted Parts

• Inconel X-750
• 300-Series Stainless Steel
• Silver braze