Bulk water meters
Meistream Plus with GWFcoder® MP
Product categories
Bulk water meters with GWFcoder® register MP for cold water up to 50 °C
Water
Drinking Water
Mechanical
Smart City
Your benefits
- Revolutionary Multiprotocol interface:
Investment security due to the interoperability of the meter - Transfer of the effective meter reading:
No data loss and guaranteed security of the billing data - No programming required when commissioning the meter in a readout system (Plug & Play):
Easy and fast on-site installation - Measurement of low flow rates:
Increased cost effectiveness - Removable measuring insert:
Retrofittability and replaceability guaranteed - One measuring insert for various bodies:
Lower storage costs
Applications
- Measurement of medium to high flow rates
- Measurement of low flow rates during offpeak periods
- Automated mobile or fixed network readout of relevant billing data
- Wired or radio remote readout of hard to access metering installations, e. g. meter pits, reservoirs
Options
- High-resolution pulse generator HRI
Documentation: HRI - Radio module RCM®-H200 split
Documentation: RCM®-H200
Downloads
Properties
- Horizontal installation position
- No straight flow section required before the meter
- Register can be turned through 355°
- Maximum operating pressure PN 16 bar
- Temperatures up to 50 °C
- Rotor is hydrodynamically, radially and axially balanced
- Available in the standard installation lengths for WS and WP meters
- Powder coating provides optimum corrosion protection
- Non-ferrous metal design
- SVGW certification
Conformity according to the European Measuring Instrument Directive (MID)- Flood-proof register (IP68) with Multiprotocol interface (MP), 5 m cable and provision for a HRI pulser
- M-Bus standard unit load: 2 unit loads (3 mA)
Product information
Technical Data
| Manufacturer information | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal diameter1) | DN | mm | 50 | 50 | 65 | 65 | 80 | 80 | 100 | 100 | 150 |
| Nominal pressure | PN | bar | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
| Nominal flow rate | Q3 | m3/h | 35 | 35 | 40 | 40 | 63 | 63 | 100 | 100 | 250 |
| Overload flow rate (few minutes) | Q4 | m3/h | 55 | 55 | 60 | 60 | 120 | 120 | 160 | 160 | 400 |
| Transitional flow rate ± 2 % | Q2 | m3/h | 0,13 | 0,13 | 0,16 | 0,16 | 0,25 | 0,25 | 0,4 | 0,4 | 0,63 |
| Minimum flow rate ± 5 % | Q1 | m3/h | 0,07 | 0,07 | 0,1 | 0,1 | 0,13 | 0,13 | 0,2 | 0,2 | 0,35 |
| Temperature | max.°C | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | |
| Dimensions and weights | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall length | L | mm | 200 | 2702) | 200 | 300 | 2253) | 300 | 250 | 360 | 3004) |
| Height | H | mm | 157 | 157 | 157 | 157 | 187 | 187 | 187 | 187 | 214 |
| Height | h | mm | 73 | 73 | 85 | 85 | 95 | 95 | 105 | 105 | 135 |
| Dismantling height of measuring unit | g | mm | 237 | 237 | 237 | 237 | 307 | 307 | 307 | 307 | 393 |
| Meter weight | app. kg | 7,8 | 9,6 | 10,1 | 12 | 14,2 | 16,3 | 18,2 | 20,2 | 35,9 | |
| Measuring insert weight | app. kg | 1,5 | 1,5 | 1,5 | 1,5 | 3,2 | 3,2 | 3,2 | 3,2 | 5,9 | |
| Body weight | app. kg | 6,3 | 8,1 | 8,6 | 10,5 | 11 | 13,1 | 15 | 17 | 30 | |
1) Nominal size DN 40 upon request
2) Also available with 300 mm body length
3) Also available with 200 mm body length
4) Also available with 500 mm body length
| MID certification data | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal flow rate | Q3 | m3/h | 25 | 25 | 40 | 40 | 63 | 63 | 100 | 100 | 250 |
| Temperature | max.°C | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | |
| Measuring range | R315 | R315 | R400 | R400 | R400 | R400 | R400 | R400 | R630 | ||
| Standard marking | R315 | R315 | R315 | R315 | R315 | R315 | R315 | R315 | R315 | ||
Dimension Diagram
Materials
| Body | Cast iron |
| Measuring unit | Plastic |
| Rotor | Plastic |
| Other materials | Brass / non-rusting steel |
Measurement error curve
Typical Head Loss Curve
Installation
| Pipeline: | horizontal |  |
| Meter head: | upwards |  |
Commission
When commissioning the meter the measuring section must be filled slowly (bleed slowly).
Dial
| Nominal size | DN | 50–100 | 150 |
| Smallest reading | m3 | 0,0005 | 0,005 |
| Maximum register reading | m3 | 1’000’000 | 10’000’000 |
Pulse values HRI Pulser
| Meter sizes | DN 50...100 1 Pulse = ...Liter |
DN 150 1 Pulse = ...Liter |
|---|---|---|
| Meistream Plus | 100 1000 | 1000 10000 |
GWFcoder®-Technology
In the GWFcoder®system, the individual rollers of the mechanical register are read out optoelectronically. The position of the various long asymmetrically arranged slits in the roller counters is scanned using five light barriers (lightpipe transmitter and receiver). The light barriers are implemented with phototransistors. LEDs and light conductors, which are all consecutively scanned and evaluated. The precisely defined position of each individual roller counter is encoded as an absolute roller counter reading and read out as a part of the protocol via the GWFcoder® interface. This functioning principle is patented by GWF. The GWFcoder® interface, compared to a meter with a pulse output, has an incomparably higher level of information content and readout accuracy. A GWFcoder® register does not require a battery, which, in turn, does not compromise existing revision cycles. The readout device supplies the power for the readout.
Moreover, all products with multiprotocol functionality provide the flexibility to switch between wall readout (inductive or CL), Wired M-Bus or radio readout which leads to an easy and fast «Plug & Play» installation on site.
GWFcoder®-Data package
| Medium | Water |
| Absolute meter reading | 123654 m3 |
| Serial number | 43215678 |
| Meter size | DN 50 |
M-Bus: EN 13757 --> cable colours black / red, independent of polarity
ECO: EN 13757-3 --> cable colours black / green / red, observe polarity
Example of use
Wireless read-out
Meter with GWFcoder® register is read out automatically by radio using a mobile infrastructure (for example radio module RCM®-H200 and MEx).
