How do you calibrate a mechanical water meter?
Master Meter Calibration Procedures To perform Master meter calibration: Place the master meter in series with the flow meter under test. Compare the readings of the master flow meter and flow meter using a measured volume of liquid. Calibrate the flowmeter under test to conform with the master flow meter calibration.
What do the red numbers mean on a water meter?
Numbers in the black boxes show the amount of cubic metres of water you have used. The numbers in the red boxes record tenths and hundredths of a cubic metre. When to read your meter. Try to read the meter at the same day and time every week. This will allow you to accurately calculate how much water you are using.
How often should a water meter be changed?
meter once every two years. Most companies read meters twice a year. You can provide readings to your company at any time. If you do not receive a bill, you should tell the company so that you do not build up debt.
How often should a water meter be calibrated?
The meters must be selected, installed, operated, calibrated, and maintained following generally accepted industry and manufacturer standards. At a minimum, the top 10% of water users must be identified and have their meters calibrated annually.
What do water meter numbers mean?
The meter read equals the gallons (or cubic feet) used while the flow rate equals the number of gallons (or cubic feet) per minute flowing through the water meter. One cubic foot equals 7.48 gallons. Multiply the cubic feet by 7.48 to obtain the number of gallons.
How do you read a residential water meter?
To read a water meter in gallons, take note of the number at the bottom of your water meter. The number to the far right is a “standing 0”, represented by the number of gallons used as indicated by the hand. The meter above is an analog meter that reads: 302152 gallons.
How accurate is a water meter?
Ultrasonic water meters are typically very accurate, with residential meters capable of measuring down to 0.01 gallons or 0.001 cubic feet. In addition they have wide flow measurement ranges, require little maintenance and have long lifespans due to the lack of internal mechanical components to wear out.
What is the accuracy of a water meter?
The required accuracy of a good water meter is ±2% in general and ±5% at very low flow rate range. The exact flow range for a particular water meter depends on the size and class.
Is your water meter accurate?
In new condition, a water meter measures the volume of water usage with 98 to 100 percent accuracy. After years of wear and tear, a water meter can register an incorrect number. But you can always have the water meter tested by the utility company or a plumber to make sure of its accuracy. Water Leak Detection
What is a water meter test?
Water testing meters from Grainger provide accurate water-quality analysis that can help identify erosion and sediment problems. A turbidity meter is used to measure water clarity on a numerical scale. Choose a conductivity meter to monitor the amount of nutrients, salts or impurities in the water.