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The NEW-FLOW N-TYPE Variable Area Flowmeter (Rotameter) provides direct local indication of gas or liquid flow. Process fluid passes through a tapered tube and raises the float until the variable flow area reaches equilibrium. Metal and plastic configurations, multiple flange ratings and a wide choice of flow ranges support chemical-process, water-treatment and general industrial flow applications.
Key Features
- Variable-area measurement using a float and tapered tube
- Configurations for gas and liquid service
- Metal and plastic wetted-part options
- Flanged connections from 10A to 125A
- Optional normally-open alarm switch with one or two set points
Engineering Specifications
| Specification | Details |
|---|---|
| Measurement principle | Variable area with float and tapered tube |
| Service | Gas and liquid |
| Nominal sizes | 10A, 15A, 20A, 25A, 32A, 40A, 50A, 65A, 80A, 100A and 125A |
| Liquid flow range | 0.1–1.0 to 200–2,000 L/min, depending on size |
| Gas flow range | 2–20 to 3,000–30,000 NL/min, depending on size |
| Maximum viscosity | ≤3 cP |
| Accuracy | ±2.5% of full scale |
| Maximum working temperature | Metal construction: 100°C; plastic construction: 60°C |
| Maximum body pressure | NS and NI: 15 kg/cm²; NV: 6 kg/cm² |
| Measuring-tube pressure | Glass: 6 kg/cm² for 10A–50A, 5 kg/cm² for 65A–80A and 4 kg/cm² for 100A–150A; PC: 10 kg/cm², instantaneous pressure 15 kg/cm² |
| Wetted-part models | NS: stainless steel; NI: steel; NV: plastic |
| Material options | Body: SS304, SS316, SS316L, PVC, PP, PVDF or other options; indicator tube: glass or PC; float: SS304, SS316, PVC, PP, PVDF or Teflon; seals: NBR, Viton or Teflon |
| Flange ratings | JIS 5K, JIS 10K, ANSI 150 or ANSI 300 |
| Alarm switch | Normally open; one set point, two set points or no alarm |
| Switch rating | AC 125 V, 0.5 A; DC 100 V, 10 W; maximum DC 250 V, less than 1 mA |
Selection note: Confirm the medium, flow range, size, pressure, temperature, wetted materials, indicator tube, float, seals, flange rating and alarm requirements before ordering.
Inquiry - NEW-FLOW N-TYPE Variable Area Type Flowmeter (Rotameter)
