The M1 Water Meter with shut-off is a wireless controlled ultrasonic water meter. This meter has integrated measurement, display, and valve control over a long-range, low-power LoRa radio. It is also completely cordless and wireless - removing the need to draw electrical or data to the meter. And, the batteries used in the M1 provided up to eight years of power. Ultrasonic flow sensors used in the M1 measure a minimum flow rate of 0.44 gpm.
- Simple installation that does not require power or data cables
- Remote controlled shut-off
- Low flow rate measurements down to 0.44 gpm
- Up to eight (8) years of battery life
- Abnormal status reporting (installation errors, reverse flow, pipe burst, pipe leak)
|Pressure Loss||40 MPa|
|Accuracy||Class 2 (Class B)|
|Maximum Working Pressure||1.0 MPa (145 psi)|
|Working Temperature Range||41 deg F to 131 deg F|
|Communication||LoRaWAN on US915 MHz up to 9000 ft|
|Power||3.6V battery for up to 8 years of life|
|Storage Temperature||-13 deg F to 131 deg F|
|Display Range||0 to 99999.999 gallons|
|Permanent (Q3)||17.6115 gpm|
|Transitional (Q2)||0.1127 gpm|
|Minimum (Q1)||0.07045 gpm|
|Overload (Q4)||22.0143 gal|
- A licensed plumber is recommended to install the meter and ensure correct operation.
- Before beginning installation, remove dirt and debris from the pipe openings which could flow into and damage the hardware.
- Ensure that enough space is available for the meter and connectors.
- Check if any of the special conditions listed in the table below apply to this installation. If any conditions apply, be sure to use the appropriate reserved pipe length. It is important to use the correct length to ensure the highest measurement accuracy. Under normal conditions, the length reserved in front of meter is at least 10 times the diameter (7 1/2"). The length reserved behind the meter at least five (5) times the diameter (3 3/4"). The reserved lengths must be clear of any interference from elbows, tees, reducers, or any other apparatus that would disturb the flow.
(minimum length of straight pipe)
|Special Case||before meter||after meter|
|Normal (straight length of pipe)||7 1/2" (10 diameters)||3 3/4" (5 diameters)|
|Reducer installed before the meter||11 1/4" (15 diameters)|
|90 deg elbow installed before the meter||15" (20 diameters)|
|Valve in before the meter||37 1/2" (50 diameters)|
- Avoid damage to the water meter caused by impact or vibration of the meter installation environment, and avoid damage caused by excessive stress from pipes and fittings. If necessary,please install the water meter on the base or bracket.
- Constant, extreme ambient and water temperature will cause damage to the water meter.
- Long term exposure to corrosive environments will cause damage to the water meter.
- In general, be wary of any installation that would result in cavitation, surge, or water hammer phenomena.
- The installed pipe must be filled with water.
- Install the meter on a vertical pipe, or slightly diagonal, with the water flowing uphill. If this orientation is not possible, installing horizontally is OK. AVOID installing the meter vertically or diagonally with the flow moving downhill.
- AVOID installing meter at the highest point of pipeline to prevent the air bubbles accumulated and interfere with measurement.
- Be sure to install the appropriate threaded pipe ends to the reserved lengths before and after the meter at the appropriate length to install the meter.
Ensure that the arrow on the side of the meter points in the direction of flow, then align the meter with the pipe and use a wrench to tighten the the pipe and meter.
|on LCD||Low Voltage||Contact Kairos at email@example.com to order replacement batteries.|
|Reverse Flow||Reverse Flow||Check installation ensuring the meter is installed in the right orientation.|
|Abnormal, Erratic Data||
|Check that there is sufficient length before the meter according to the Reserve Pipe Length table in the Installation section.|
|LCD Displays Flow without Temperature||Contact Kairos at firstname.lastname@example.org|
Transportation and Storage
- Keep meter in original packaging
- Store in a non-corrosive environment between 41 and 104 deg F
- If storing several cartons, do not stack more than four (4) cartons atop each other.
This meter conforms to Class E1 (residential, commercial, light industrial environment) and Class B (indoor installations).