GF Flow Meter

Insertion Flow Meter for 1/2 to 4 Inch Pipes The 2536-P0 Rotor-X taps into pipes from DN15 to DN100 — that's 1/2 to 4 inch nominal in standard PVC, CPVC, or carbon-steel schedules. The polypropylene body, black PVDF rotor, titanium pin, and FPM O-ring shrug off water, mild acids, and standard fertigation chemistry. A wide 0.1 to 6 m/s (0.3 to 20 ft/s) range covers low-flow drip headers up to high-volume mains. The 66:1 turndown ratio means one sensor handles morning irrigation and night recirculation on the same line. Paddlewheel Flow Sensor with Open-Collector Output for PLC and Growlink The open-collector sinking output runs up to 10 mA. A Growlink Connect Controller, Precision Irrigation Controller, or any PLC reads the pulses without a signal conditioner. Linearity holds at ±1% of max range and repeatability at ±0.5%, both referenced to 25°C. Pressure rating sits at 180 psi at 68°F and derates to 25 psi at 185°F, with operating temperatures cleared from 0 to 185°F. The sensor lands in a standard 1.5 in NPT or compatible installation saddle. On most live lines, you can hot-tap with the right shutoff valve in place — no system drain. Key Features 0.1 to 6 m/s flow range (0.3 to 20 ft/s): Single sensor covers drip headers, sub-mains, and high-volume distribution. 66:1 turndown ratio: Tracks morning recirculation and afternoon main flow without swapping hardware. ±1% linearity, ±0.5% repeatability: Lab-grade accuracy at 25°C, holding through normal greenhouse swings. Open-collector sinking output, 10 mA: Reads on any Growlink controller, PLC, or pulse counter without a conditioner. PP body, PVDF rotor, titanium pin, FPM O-ring: Chemistry compatible with water, mild acids, and standard fertigation feeds. 180 psi at 68°F (12 bar) pressure rating: Holds steady in pressurized distribution lines from drip to overhead spray. Hot-tap install on live lines: Insertion saddle + isolation valve lets you mount without draining the system. Technical Specifications Specification Value Sensor type Insertion paddlewheel (GF Signet Rotor-X) Pipe size range DN15 to DN100 (1/2 in to 4 in) Flow range 0.1 to 6 m/s (0.3 to 20 ft/s) Turndown ratio 66:1 Linearity ±1% of max range @ 25°C Repeatability ±0.5% of max range @ 25°C Output Open-collector sinking, 10 mA max Sensor body Polypropylene Rotor Black PVDF Pin Titanium O-ring FPM (Viton) Max pressure 180 psi @ 68°F (12.4 bar) Pressure derating 25 psi @ 185°F Operating temperature 0 to 185°F Installation Insertion through standard 1.5 in NPT or compatible saddle