O-ring Seal Flowmeter Model 1305 - Brooks Instrument - #1

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1 O-ring Seal Flowmeter Model 1305 Data Sheet DS-VA-1305-eng March, 2008 Scales Length: Size 8 and 10— 75 mm (3”) Size 12 — 127 mm (5”) Graduations: Standard: On-tube printed scale (Millimeter scale with approximate calibration curve, direct reading gpm water or scfm air) OR Detachable printed scale (Choice of direct reading units, millimeter or percentage of maximum flow with factor tag.) Ambient Temperature Limits 33°F to 125°F (1°C to 52°C) Operating Fluid Temperature Limits Maximum: 250°F (121°C) for gas service Minimum: 33°F (1°C) Connections Standard: Female NPT Connection Orientation Standard: Vertical inlets and outlets With Alarm: Horizontal outlets Meter Dimensions Refer to Figure 1 • Capacity ranges 0.8 to 50 gpm; 3 to 50 scfm • O-ring seal construction • Sturdy bolted side-plate construction • Standard NPT connections • Vertical inlets and outlets standard, horizontal outlet with alarm • Alarm switch adjustable for high or low flow indication DESCRIPTION The Brooks® Model 1305 glass tube flowmeters provide a low cost means of flow rate indication and alarm signaling. They are designed for applications where the metering accuracy requirements are not severe. These meters are ideal for purge type service, seal oil systems, bearing lubrication and cooling water indication. Model 1305 is available with vertical inlets and outlets and standard materials of construction only. A general purpose alarm, with flow contacts over the entire flow range, is optional. SPECIFICATIONS Capacities and Pressure Drops Refer to Table 1 Accuracy Standard Flow Accuracy: ±10% Full Scale from 100% to 10% of scale reading Optional Flow Accuracy: ±5% Full Scale from 100% to 10% of scale reading Repeatability 1% Full Scale Pressure Ratings Meter Maximum Working Pressure (psig) at 250°F (121°C) for gases 8 200 10 150 12 75 Note: Hydrostatic test pressure is 1.5 times the working pressure Model 1305