Netafim 3/4in Fertilizer Meter 1.0 Pulse/Gallon

Netafim 3/4 Inch Fertilizer Meter for Low-Flow Injection Lines Concentrate lines run at a fraction of a gallon per minute, and a meter sized for the main would barely turn at that pace. This Netafim meter is built for exactly that low-flow job. It is the 3/4 in polypropylene model, item 70261-011030 and model 36FMPO.751. The plastic body is light and corrosion resistant, which suits acid and fertilizer stock solutions. Only one moving part, the impeller, touches the liquid, so wear stays minimal. A magnetic drive turns the sealed register, which is guaranteed not to fog or collect moisture. The same coupling trips a reed switch that sends a dry-contact pulse for every 1.0 gallon. Accuracy is ±2% from a 0.3 GPM minimum to a 2.2 GPM maximum, with 1.7 GPM nominal. The body is rated to 72.5 psi and liquids up to 122°F, with threaded ends. It is about 4-3/8 in long, 3-1/8 in tall and 3 in wide, and weighs 0.6 lb. Wiring a Fertigation Flow Meter to the Controller Fit it on the suction or discharge line of the injector, wherever the stock solution passes before it meets irrigation water. Connect the reed switch to a pulse input on the fertigation or irrigation controller. The controller then tallies gallons of concentrate and can stop the injector once a set volume has gone in. Comparing that tally against the water meter on the main gives the true dilution ratio for the day. A slow drop in pulses at the same injector setting is an early sign of a clogged foot strainer or a worn pump diaphragm. Install it horizontally with the dial face up, as Netafim specifies for this size. No straight pipe is needed, so this fertigation flow meter can sit right beside a valve, filter or tank fitting. Keep line pressure inside the body rating, which may call for a regulator on a pressurized injection loop. The dial totals in gallons with pointers down to 0.01 gallon, handy for a quick manual check against the controller. Each meter is tested and calibrated before shipping, with three years of cover on the metering parts and five on the body. Key Features • Reed switch output: One dry-contact pulse per gallon for fertigation controllers and data loggers. • Low-flow range: Holds ±2% from 0.3 GPM up to 2.2 GPM on concentrate lines. • Polypropylene body: Light, corrosion-resistant plastic for fertilizer and acid stock solutions. • Single moving part: Only the impeller contacts the liquid, keeping wear to a minimum. • Sealed magnetic register: Dial that will not fog or take on moisture. • No straight pipe needed: Mounts beside injectors, filters and tank fittings. Technical Specifications Specification Value Item Number 70261-011030 Model 36FMPO.751 Size 3/4 in Body Material Polypropylene Connections Threaded Register Reed switch, dry contact Pulse Output 1.0 gallon per pulse Register Totalizer Gallons x 10 Pointer Resolution 0.01, 0.1 and 1.0 gallon Accuracy ±2% Flow Range 0.3 GPM minimum; 1.7 GPM nominal; 2.2 GPM maximum Maximum Working Pressure 72.5 psi Maximum Liquid Temperature 122°F Installation Horizontal, dial face up; no straight pipe requirement Dimensions 4-3/8 in long x 3-1/8 in high x 3 in wide Weight 0.6 lb Warranty 3 years metering components; 5 years meter body