UMS Water Metering

The Utility Monitoring System (UMS) measures and reports domestic water consumption at the incoming service entrance, and at additional sub-metered locations, as specified by individual facilities. The UMS is among the most extensive, enterprise-wide utility water metering systems in existence.

There are two different approaches to domestic water metering that are being used in the UMS. Some facilities are retrofitting existing water meters with a pulse output. Others are installing new water meters.

The preferred approach is to install a pulse output device on the existing utility water meter. In this situation, both the facility and the water utility share the same sensor. However, some utilities will not provide a pulse output from their meter or permit a pulse retrofit device to be installed on their meter. Also, a pulse output device may either be incompatible with or unavailable for many older water meters.

Some facilities own their own water meters. These meters can also be retrofit with pulse initiating devices and utility permission is not required.

The alternative approach is to install a new water meter. For large service entrances with highly variable consumption, utilities normally install an in-line compound meter that can accurately measure both high and low flows. A compound meter is essentially a dual meter with one meter registering high flows and the other meter registering low flows. The problem is that compound meters are heavy and expensive and a shut down is required for their installation.

Due to these constraints, if a pulse retrofit device cannot be installed on an existing utility or facility water meter, New Horizon Technologies recommends the installation of a turbine or magnetic insertion meter. An insertion meter is installed through a "wet tap" and a shut down is not required. However, the location of an insertion meter is critical with 15-20 pipe diameters of straight pipe at the point of insertion required for maximum accuracy.

Water meters are typically most accurate over a relatively narrow flow range. A drawback to insertion meters is that while they are normally scaled to be as accurate as possible over as wide a range as possible, they generally do not record very low flows accurately and "cut out" or record zero flow when the flow is in range of .15-.20 FPS or lower. New Horizon Technologies tracks the accuracy of all insertion meters installed and calculates and applies a correction factor to meters where the flow variation is significant.

All insertion meters should be removed and recalibrated at least every two years. They may need to be removed and cleaned more frequently depending on the level of "hardness" and/or solids in the incoming domestic water. If you have a UMS installed, you will be notified by NHT if your insertion water meter performance appears to be degrading and that cleaning may be required. Periodic meter recalibration can be provided through a technical support and maintenance contract. In an attempt to avoid performance degradation, all new UMS water meters installed are magnetic meters with no moving parts and thus no parts that can become fouled.

 


 UMS Products & Services

 What is UMS?

 Why Invest?

 Advanced Features

 Sub-Metering

 UMS Data Aquisition

 Wireless Data

 Water Metering

 Overview

 FAQs

 On-Line Metering Demo


New Horizon Technologies
3040 Continental Drive
P.O. Box 3003
Butte, MT 59702

Phone: 877-494-8833
Fax: 406-494-2905
Email: info@newhorizontech.com

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