Embed Size (px)
Citation preview
PORTABLE WATER METERS TEST KIT АС-П
Portable water meter test kit (WMTK) provides everything needed to accurately test domestic water meters at the place of their installation without dismantling tested water meters.
1.1 Remote Calibration: Removal of the flow-meter from its location and sending it to be calibrated against flow standards. Once calibrated, the newcalibration factors are entered to the existing data acquisition system (a tablet computer in our case). The remote calibration against primary standards seems to offerhigher accuracy. However, from a “system” approach this assumption is not necessarily true. Moreover, this is an expensive and labor intensive practice.
1.2 In-line connecting a “reference flow meter” with the unit under test, typically is used. This approach gives the user a better understanding of the “system” performance, as the calibration is performed with the same liquid used, at similar flow conditions.
APPLICATION AREA
Testing accuracy of cold and/or hot water meters (DN15, DN20) on-site without displacing them from the pipeline.
1. It allows to determine accuracy of water metering unit for the purpose of expert evaluation when resolving disputes between suppliers and consumers.
It solves issue of the credibility of a particular water meter, while taking into account all influencing factors caused by location and method of installation.
2. It allows for routine calibration of the water meter (after recalibration interval) without displacing from the pipeline.
It considerably reduces the cost of works on routine testing by eliminating the costs of dismantling, installation and transportation. It shows to municipal water supply companies actual water loss due to inaccuracy of the meter at the end of recalibration interval.
Comparison of the tested water meter readings with the readings of portable in-line connected reference flow-meter at the place where the tested meter is installed.
TESTING METHOD
1. Cost effectiveness – while using WMTK in the place of water meter location we significantly reduce testing cost for dismantling, transportation/logistics and installation cost. As example, testing cost of local water supply company were decreased for more than 50%.
2. Mobility - compact size, low weight, self-contained power.
3. High accuracy - the core of the water meter test kit is a flow meter manufactured by SIEMENS with a relative error in the main range of ± 0,25%.
4. Versatility – system data pickup based on photographic images allows to test any meters that have registers. A set of adaptor connectors allows to connect the WMTK at any point of water distribution.
5. Easy to use –Easy to connect and complete automation of the measurement process does not require special staff training and education. And this fact also decreases your testing costs as you do not need highly qualified staff for on-site testing.
6. Speed– the testing process of one water meter is in the range of 10 ... 15 minutes.
KEY BENEFITS
6. Security – service staff has no influence on the algorithm and the results obtained, all the received data is stored securely in an automatically generated electronic record.
7. Data completeness – the electronic program logs up to 13 photos of the tested water meter readings and reference flow meter at various flow speed modes, the date and time of the test, GPS-coordinates of the test.
8. Ease of data processing– the electronic record is transmitted via Internet to the relevant authority, where specialists process, store and systematize the received data using our specially developed software. Based on the received electronic records they make their decision whether the water meter passed the test.
9. Reliability– in the design of the WMTK we use components from leading world-known manufacturers.
10. Innovation– the testing method is protected by patent on the territories of Ukraine, Russia, Kazakhstan. Same patent applications are prepared for filing for Canada, USA, Germany and France.
KEY BENEFITS
SAMPLE OF AN AUTOMATICALLY GENERATED ELECTRONIC RECORD
1 –– cold water inlet;2 –– cold water meter;3 –– cold water faucet mixer;4 –– hot water inlet; 5 –– hot water meter; 6 –– hot water faucet mixer; 7 –– mixer; 8 –– mixer’s outlet; 9 –– digital video camera; 9.1 –– mounting bracket to fix video camera on the meter; 10 –– WMTK; 10.1 –– flexible hose connection; 10.2 –– shut-off valve; 10.3 –– reference flow meter; 10.4 –– flow control valve; 10.5 –– WMTK outlet; 10.6 –– jet extinguisher (extinguishes splashes at WMTK outlet); 10.7 –– data computing and data archive unit; 11 –– tablet computer.
WMTK CONNECTION DIAGRAM FOR TESTING HOT/COLD WATER METERS AT THE POINT OF THEIR INSTALLATION AND OPERATION.
WMTK CONNECTION DIAGRAM FOR TESTING HOT/COLD WATER METERS AT THE POINT OF THEIR INSTALLATION AND OPERATION.
Note: Digital video cameral for system data pickup shall be attached (alternatively/in rotation) to cold and hot water meters (the water flow is allowed ONLY via the meter where video camera is attached to).
8
10
8 –– faucet mixer’s outlet; 10 –– WMTK;
WMTK DESIGN AND MANUFACTURING
WMTK is assembled on the base of SEIMENS microprocessor-based transmitter SITRANS F M MAG 5000 with measuring accuracy of ± 0.4% of the flow rate and SITRANS F M MAG 1100 sensor (DN10 or DN6)In the original transmitter case are installed the following additional components:
1. Processor board on the base of microcontroller, which is in charge for the WMTK operation in fully autonomous mode. Board is featured with 4 lines LCD screen, removable nonvolatile memory, backup battery for current time timer and Bluetooth transmitter for tablet computer connecting.
2. Backplane, which is in charge for charging storage batteries as well as for the commutation between WMTK components and reference meter.
3. Bluetooth transceiver for the communication with WMTK video camera.
4. Set of Li-Polymer batteries, which ensure fully autonomous WMTK operation for 10 hours.
5. Charger connector for batteries.
6. Power button.
WMTK DESIGN AND MANUFACTURINGReference meter is installed at calming section.
WMTK is stocked with special video camera with Bluetooth transceiver and a stand.
After assembling, systematic errors of WMTK are determined on 10 flow rates (on fixed calibration equipment).
Data on systematic errors are saved in processor’s board memory. Such systematic errors are taking into account by the processor of WMTK while measuring reference water volume.
http://youtu.be/CNM4H1X13IU
WMTK DESIGN AND MANUFACTURING
WMTK is stocked with a tablet computer with preinstalled software on the base of Android 4.1 operation system or later.
WMTK is packed into a carrying case. WMTK weight with carrying case, batteries and connectors – 7,2 kg.
WMTK is stocked with installation disk for special software for PC based on Windows 7/8, which processes electronic records, keeps and maintains the electronic records database.
ADDITIONAL SOFTWARE
For the time being we are in the process of finalizing official All-Ukrainian database for ALL cold/hot water meters. Municipal companies will be able to synchronize their billing systems with our database and therefore be able to apply only readings of calibrated water meters and avoid mistakes when invoicing their clients.
