SERIES 100 General Equipment Gauge SERIES 200 Compressed Gas/ Welding Gauge SERIES 300 Refrigeration Gauge Ammonia Gauge SERIES 400 2.5" Diaphragm Gauge SERIES 500 Stainless Process Gauge SERIES 600 General Equipment Receiver Gauge SERIES 1000 4" All S.S. Process Gauge SERIES 1500 4.5" Process Gauge Configuration A 4.5" Process Gauge Configuration B SERIES 1600 Test Gauge SERIES 1700 Pressure Receiver Gauge SERIES 1800 4.5" Process Bellows Gauge SERIES 2000 Economy Process Gauge PRESSURE Gauge OPTIONS GENERAL INFO C SERIES S SERIES T SERIES E SERIES MINI SEALS   These gauges are specifically designed for ammonia applications where economical construction is required. These gauges feature: Components that are compatible with ammonia A compound range to cover all ammonia services A temperature scale to aid analysis of refrigeration systems Dial Size: 2.5" Dial: White coated aluminum with black markings and red temperature marking Case: Drawn steel with corrosion resistant finish Ring and Window: Threaded polycarbonate Accuracy: 2% of span Movement: Precision geared stainless steel Bourdon Tube: 316 stainless steel, soft soldered Connections: Alloy steel, 1/4" NPT, LM    Ammonia Gas Gauges Range Model 351 30 - 0 - 150 psi 0332-B31AF000 30 - 0 - 300 psi 0332-B31AR000 Dial Size A B C G H M W Wt(oz) 2 1/2" 2.25 1.02 2.47 1.95 0.38 0.8 9/16 6.0 Note: All Dimensions are shown in inches.