M Series Water Meters Guide
Contents
1. Registers are interchangeable and easily replaced with common tools They are removable even when the meter is operating Flows are totalled in U S Gallons and each dial face indicates the multiplication factor A sensor combines an IR light source and a light sensitive diode in one package Signals are created when the light beam created by the IR light is interrupted by a rotating element Requires a constant supply of DC power Minimum contact current is 15mA to a maximum of 25mA DC through a resistor and maximum voltage is 28VDC Yellow Wire Positive 20 30mA through a resistor Transparent Wire Output open collector max load 2mA Bare Wire Ground RECOMMENDED RESISTOR VALUES BE id VOLTAGE gt 5 6 9 12 24 checked carefully to prevent damage of the eC a ae 180 220 330 470 1 000 sensor Register will not RESISTOR VALUE W 0 25 0 25 0 25 0 5 1 0 function properly if the register lid is not closed during operation 4 M SERIES WATER METERS READING A REGISTER READING A REGISTER The Total Flow for a Water Meter register is calculated by adding the readings from the Totalizer and the three fractional dials The three fractional dials measure quantities smaller than the totalizer reading and are continuously turning while calculating the flow TOTALIZER READING Rotates sequentially for each 100 U S G U S Gallons calculated Number displayed is multiplied by 100 to2. reach total U S G FRACTIONAL DIAL 1 Each number 1 9 on the dial is multiplied by 10 to reach U S G One complete revolution of this dial 10 U S G FRACTIONAL DIAL 2 Each number 1 9 on the dial is multiplied by 1 to reach U S G One complete revolution of this dial 1 U S G FRACTIONAL DIAL 3 Each number 1 9 on the dial is multiplied by 0 1 to reach U S G One complete revolution of this dial 0 1 U S G Totalizer Reading x 100 sA J 3 NETAFIM x10 det Fractional Fractional Dial 1 Dial 3 Fractional Dial 2 REGISTER SPECIFICATIONS PULSE OUTPUT GALLONSPPULSET 01 10 Totalizer Reading GRIGIO x 100 IIA giNETAFIM NI N Li x10 1 0 1 E ji 0 AR 2 A eE Fractional Fractional Dial 1 Dial 3 Fractional Dial 2 CALCULATING THE TOTAL FLOW FOR THIS REGISTER Totalizer Reading 0 0x 100 0 Fractional Dial 1 7 7x10 70 Fractional Dial 2 5 5x1 5 Fractional Dial 3 7 7x0 1 7 CALCULATION Add Totalizer Reading and all Fractional Dial Readings 0 70 5 7 75 7 U S G 75 7 U S Gallons is the Current Total Flow NOTE If a number is partially visible on the totalizer always default to the lower of the 2 numbers when calculating flow If a fractional dial is pointing between numbers always default to the lower of the 2 numbers POINTER RESOLUTION POINTER 1 x0 01 GALLON x0 10 GALLON POINTER RESOLUTION POIN
3. N NETAFIM WATER METERS M SERIES WATER METERS INSTALLATION OPERATION AND MAINTENANCE GUIDE METAL M SERIES WATER METER PLASTIC M SERIES WATER METER INTRODUCTION M SERIES WATER METERS INDUSTRY S SMALLEST WATER METERS Netafim USAs M Series Water Meters are used as sub meters for residential or commercial applications and the industry s smallest multi jet water meter The multi jet principle assures an equally distributed load on the impeller minimizing wear and maintaining accuracy These meters offer the best cost and performance long life flow measurement instruments Wide clearances in the measuring chamber and negligible area of contact between static and moving parts are the main reasons for the high reliability of this design even in hard water FEATURES Only one moving part the impeller in Sealed contact with the water for minimum wear Register Pulse Reed and utmost reliability Magnetically driven sealed registers with stainless steel composite encapsulated and guaranteed against fogging due to moisture Very accurate over a wide range of flows for flexible and efficient water management Tamper Proof Tab Impeller Inlet Side Measuring Basket Filter Chamber SPECIFICATIONS AVAILABLE SIZES 3 4 AND 1 MAXIMUM WORKING PRESSURE 140 PSI MAXIMUM LIQUID TEMPERATURE UP TO 122 F BODY MATERIAL METAL CORROSION PROOF COPPER ALLOY BODY MATERIAL PLASTIC COMP
4. OSITE CONNECTIONS MALE PIPE THREAD DIMENSIONS AND WEIGHT PERFORMANCE DATA LOWEST FLOW LOWEST FLOW NOMINAL FLOW MAXIMUM FLOW SIZE WITHIN 5 WITHIN 2 WITHIN 2 WITHIN 2 ACCURACY ACCURACY ACCURACY ACCURACY 0 2 GPM 0 9 GPM 11 GPM 14 GPM Pat 03GPM 1 2 GPM 15 4 GPM 20 GPM M SERIES WATER METERS e 3 REGISTERS REED SWITCH REGISTER me The Reed Switch Register is a drv contact or simple switch IIA closure for communicating with control and monitoring Ha equipment Registers are interchangeable and easily SAS replaced with common tools They are removable even when the meter is operating A leak indicator in the center of the dial registers the lowest flow through the meter Flows are totalled in U S Gallons and each dial face indicates the multiplication factor Magnetic coupling activates the reed switch creating a pulsed output 6 Drv contact uses verv little electric power Calculates volume related functions such as data recorders or simple counters Maximum contact current is 50mA and Only maximum contact voltage is 48VDC Red Wire Positive Black Wire Negative Black Wire JR Red Wire NOTE Always refer to the controller manufacturer s instructions for proper PHOTO DIODE REGISTER installation and connection requirements The Photo Diode Register has a photo coupler sensor that provides pulse output for communicating with control and monitoring equipment
5. TER 2 x0 1 GALLON x 1 0 GALLON POINTER RESOLUTION POINTER3 x1 0 GALLON x 10 GALLON M SERIES WATER METERS e 5 INSTALLATION INSTALLATION REQUIREMENTS 1 Correct direction of flow is indicated on the water meter body see Figure 1 2 Dial face must be horizontal and facing upwards see Figure 2 3 Register lid must be in the closed position during normal operation see Figure 3 4 There are no straight pipe installation requirements If possible 5 of straight pipe upstream before the meter and 2 of straight pipe downstream after the meter is recommended to achieve the best performance and accuracy Prior to water meter installation the pipeline should be thoroughly flushed The water meter must be installed so that the pipe will be full of water at all times during metering Installation of a Continuous Acting Air Vent before the water meter is highly recommended to eliminate air and ensure accurate flow readings see Figure 4 For additional details on air vent options and installation requirements refer to the Netafim USA Landscape amp Turf Catalog om yl FIGURE 1 FIGURE 2 Direction of flow Dial face upwards indicated on body Water Meter Continuous Acting Air Vent FIGURE 3 FIGURE 4 Register lid closed Air vent installation REGISTER REMOVAL AND INSTALLATION 1 Prythe tamper proof tab upward using a screwdriver 2 Loosen and unscrew the brass or plastic closing ring and cap a
6. alve on one side of the water meter perform the blow out procedure and then open the manual ball valve Repeat process on the other side Remove the water meter before the blow out procedure and replace it with a section of PVC Polyethylene tubing When the blow out procedure is complete reinstall the water meter Inlet Side Basket Filter FIGURE 5 Cleaning Inlet Side Basket Filter M SERIES WATER METER WARRANTY Netafim M Series Water Meters are individually tested calibrated and inspected to ensure they meet the highest quality standards and the testing documents are included with each meter They also have the industry s longest warranty WARRANTY METERING COMPONENTS REGISTER amp METERING ASSEMBLY 3 YEARS METER BODY 5 YEARS M SERIES WATER METERS 7 N NETAFIM NETAFIM USA 5470 E Home Ave Fresno CA 93727 CS 888 638 2346 F 8006954753 www netafimusa com 82000 013370 04 12
7. ssembly that secures the register Lift off the closing ring and cap assembly Lift out the register from it s sealed compartment making note of the position for any spacers and o rings 3 To install place the register into the sealed compartment including spacers and o rings and place the closing ring and cap assembly on top of the register Tighten the closing ring by twisting until secure 6 M SERIES WATER METERS MAINTENANCE MAINTENANCE REQUIREMENTS 1 Inlet side basket filter should be removed and cleaned every 90 days or as needed based on the water quality at the site see Figure 5 2 Inlet side basket filter must remain in place during normal operation in order to avoid debris entering and clogging the metering chamber 3 Teflon tape should be used on pipe fittings and connections as needed to prevent leaks WARNING Units must not be subjected to system blow out using compressed air Subjecting the water meter to this procedure will result in product failure and the resulting damage is not covered under warranty It is recommended that the water meter be installed in systems or portions of systems that will gravity drain for winterization only If the unit is installed in a system which will be winterized with compressed air please do one of the following Install manual ball valves on each side of the water meter to isolate the water meter from the system blow out procedure Close the manual ball v
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