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Designed for low flow rates, the Model P flowmeter is a precision instrument embodying the inherent simplicity, versatility and economy of the classical rotameter. It is particularly suitable formetering carrier gases in chromatography,indicating and controlling gases in manufacturing processes, liquid and gas measurement in laboratories, pilot plants, flow and level indicating,etc. Shipped completely assembled, flow meters include standard mounting fittings in a choice of materials, side plates, thick protective magnifying front shield and back plate, optional built-in control valve, and flow tubes selected from the Flow Capacities tables (See Below). Panel mounting style is convertible to bench mounting through the use of the optional acrylic tripod. The tripod option has a built-inspirit leveler and leveling screws.
Meters are available with built-in needle valves (CVTM), high precision metering valves (MFVTM) with "non-rising stems", or with no valves. The higher cost of MFVTM valves is justified whenever high sensitivity control and resolution are desirable particularly in conjunction with metering tubes of very low flow rates. Generally, for gas metering it is recommended that valves are positioned at inlets (bottom) for liquids valves may be positioned either at inlets or outlets (top). For vacuum services, valves must be mounted at outlets. If unspecified at the time of ordering, meters will be shipped with valves mounted at the inlets
STANDARD ACCURACY | ±2% FS mm scales except 042 and 032 flow tubes. ±5% FS direct reading scales 042 and 032 flow tubes. |
CALIBRATED ACCURACY | ±1% FS optional. |
REPEATABILITY | ±0.25%. |
USEFUL FLOW RANGE | 10:1 minimum with one float and better than 20:1 with combination of two floats installed in meters. |
MAXIMUM OPERATING PRESSURE | 200 psig/13.8 bars. |
MAXIMUM OPERATING TEMPERATURE | 250 °F/ 121 °C. |
**MATERIALS OF CONSTRUCTION | |
FLOW TUBES | Heavy walled borosilicate glass. |
FLOATS | Glass, Sapphire, 316 Stainless Steel, Carboloy® and Tantalum. |
CHOICE OF MOUNTING FITTINGS IN CONTACT WITH FLUIDS | a) Aluminum, black anodized. b) Brass, chrome plated. c) 316 stainless steel. |
SIDE PANELS | Aluminum, black anodized. |
FRONT SHIELD | Lexan® with longitudinal magnifier lens for enhanced reading resolution. |
BACK PLATE | 1/8" thick white acrylics. |
O-RINGS AND PACKING | Buna-N® o-rings in aluminum/ brass model. Viton® o-rings in stainless steel meters. OPTIONAL Viton® PTFE Kalrez® and EPR. |
CONNECTIONS | 1/8" NPT female inlet and outlet connections. OPTIONAL 1/4" FNPT, hose and compression fittings are available. |
**The selection of materials of construction, is the responsibility
of the customer. The company accepts no liability.