Perma-Cal 6 in. Caisson Gauge, 0.25% Acc. 75 MSW/250 FSW, Black, Rear Flange, 1/4 in. MNPT Back Fitting

• Accuracy: 0.25% full scale (Grade 3A) (calibration certificate included)
• Product Type: Caisson gauge
• Dial Size: 6 in. (external zero adjust included)
• Pointer Type: Test (knife-edged, precision reading)
• Mirror Band: Yes
• Pointer Dampening: No
• External Zero Adjust: Yes
• Pressure Range: 0 - 250 FSW / 0 -76 MSW
• Color: Black
• Materials:
  • Case: ABS (acrylonitrile butadiene styrene)
  • Wetted Parts: 300-series SS
  • Connection Material: 316 stainless steel
• Fitting Position: Back
• Fitting Type: 1/4 NPT Male
• Cleaned for Oxygen Use (complies with ASME B40.100, Cleanliness Level IV)

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: 75 MSW | 250 FSW Dual Scale

• Color: Black

• Connection: 1/4 in. Male NPT 316 stainless steel back fitting

• 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

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