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Brand: Sensus
Sensus MeiStream Plus Class C Bulk Water Meter DN 40-150
Description
The Sensus MeiStream Plus is a class C bulk water meter for cold potable water in DN 40 to DN 150 at PN 16. It has MID pattern approval for the complete meter and for the exchangeable metrological module, a measuring range of Q3/Q1 of 315 or higher in horizontal installation, high overload capability and no need for straight inlet pipe. It is meant for billing and network metering at medium and high flow rates, including light-load periods and leakage control.
Technical specifications
| Parameter | Specification |
|---|---|
| Product | Sensus MeiStream Plus class C bulk meter for cold potable water, DN 40 to 150, PN 16 |
| Approval | MID pattern approval annex MI001, complete meter and exchangeable metrological module: DE-09-MI001-PTB012; marking CE M-XX 0102 |
| Nominal sizes | DN 40, 50, 65, 80, 100, 150 |
| Ratio | Q3/Q1 of 315 or higher in horizontal installation; standard marking 315 (maximum 315 to 630 depending on size) |
| Installation | No straight inlet length needed (U0D0 per OIML R49:2013 and ISO 4064-1:2017); unrestricted straight pipe 0 x DN; no abrupt restrictions downstream |
| Body and module | Cast iron body; metrological module and rotor of engineering polymer (brass and stainless steel also used) |
| Protection and temperature | IP68, submersible; materials temperature resistant to 70 degC; billing of cold potable water up to 50 degC |
| Environmental | Class O, mechanical M2, ambient 5 to 70 degC |
| Lengths | Short (WP) and long (WS) overall lengths to DIN 19625 and ISO 4064-1:2017 |
| Dial | Smallest reading 0.0005 m3 (DN 40 to 100) and 0.005 m3 (DN 150) |
| Pulse values | HRI-Mei 0.01, 0.05, 0.1 or 1 m3 (DN 40 to 100) or 0.1, 0.5, 1 or 10 m3 (DN 150); OD 01 0.001 m3 or 0.01 m3; OD 03 0.01 m3 or 0.1 m3 |
| Options | Encoder register for direct readout via M-Bus, MiniBus, Sensus or IEC 1107; factory-mounted HRI-Mei; version for use in hazardous area; 1/4 in pressure monitoring port |
Performance data by size (m3/h)
| DN | 40 | 50 | 65 | 80 | 100 | 150 |
|---|---|---|---|---|---|---|
| Q3 permanent (MID) | 25 | 25 | 40 | 63 | 100 | 250 |
| Q4 overload (MID) | 31.25 | 31.25 | 50 | 78.75 | 125 | 312.5 |
| Q2 transitional | 0.13 | 0.13 | 0.16 | 0.25 | 0.4 | 0.63 |
| Q1 minimum (MID) | 0.08 | 0.08 | 0.1 | 0.16 | 0.25 | 0.4 |
| Max ratio Q3/Q1 | 315 | 315 | 400 | 400 | 400 | 630 |
| Headloss at Q3 (bar) | 0.09 | 0.08 | 0.17 | 0.07 | 0.16 | 0.14 |
Exchangeable module and readout options
The metrological unit is a pattern-approved exchangeable module of engineering polymer in a cast iron body, and the complete meter can be submerged to IP68. The register is prepared for HRI-Mei pick-up and optical OD pulsers can still be used. An encoder register for direct readout over M-Bus, MiniBus, Sensus or IEC 1107 protocols is available, as is a factory-mounted HRI-Mei, a quarter inch pressure monitoring port and a version for use in hazardous areas. Short WP and long WS overall lengths are offered to DIN 19625 and ISO 4064-1:2017.
Choosing size and checking the data
The data sheet gives two sets of values: the manufacturer’s values (for example a continuous flow Q3’ of 30 m3/h and a peak flow Q5 of 50 m3/h at DN 40) and the MID approved values (Q3 of 25 m3/h at DN 40). Use the MID values for billing duty and the manufacturer values for hydraulic sizing. The maximum ratio rises from 315 at DN 40 to 630 at DN 150, although the standard marking is 315 across the range. The head loss at Q3 is between 0.07 and 0.17 bar depending on size. Confirm the lay length, pulse or encoder option, hazardous area need and the approvals required by the utility; the certificates stated are the European MID ones.
Documents and quotation
The linked file is the four-page Sensus MeiStream Plus data sheet. Before ordering confirm the DN, short or long length, flange drilling, register or pulse option and approvals. See also related flowmeters and the ABB AquaMaster4 FEW400 electromagnetic flowmeter. Seven Star LLC, an independent supplier in Muscat, will prepare a quotation from your project requirements.
See also: Sensus 620 Volumetric Water Meter Dry Dial DN 15-40.
Datasheets & Documents
- Datasheet Sensus MeiStream Plus data sheet (class C bulkmeter DN 40...150) Download
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About brand
Sensus is a maker of water, gas and electricity meters and the networks that read them, headquartered in Raleigh, North Carolina. Xylem agreed to buy Sensus in August 2016 for about 1.7 billion US dollars, adding smart metering and advanced metering infrastructure to its water technology business. At the time Sensus had more than 80 million metering devices installed worldwide.
Seven Star LLC is an independent supplier in Muscat. We list Sensus meters backed by the manufacturer data sheets for utilities, developers and facility teams in Oman and the GCC.
Sensus company profile
| Headquarters | Raleigh, North Carolina, USA |
|---|---|
| Ownership | Xylem, after an agreement announced in August 2016 |
| Deal value | About 1.7 billion US dollars |
| Installed base | More than 80 million metering devices worldwide (2016) |
| Product families | iPERL electromagnetic and Cordonel ultrasonic static water meters, 620 volumetric meters, bulk and woltman meters, gas and electricity meters, FlexNet AMI communication network |
Sensus product series
Static meters include the iPERL electromagnetic water meter and the iPERL+ smart meter (documented in US units and standards), and the Cordonel ultrasonic meter for DN 40 to 200. Residential and sub-metering meters include the 620 volumetric meter with dry dial, the 640 with electronic register, the 420 and 420PC multijet meters and the DomoJet single jet meter.
For larger flows there are the WP-Dynamic Woltmann turbine meter for DN 40 to 300, the WPV-MS 150 compound meter and the MeiStream Plus bulk meter for DN 40 to 150.
Where Sensus meters are used
Utility billing for homes and buildings, bulk supply and district metering, sub-metering in compounds and towers, and irrigation and industrial water metering.
Sensus products we list
Ordering Sensus meters: what we need
Send the DN, connection or flange drilling, lay length, ratio, temperature class, the approvals your utility requires (MID, OIML R49, ISO 4064 or potable water approvals) and the radio or register option.
Facts checked against Xylem's 2016 announcement and financial press, October 2026.
Browse Sensus products by category: Flowmeters.
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Frequently Asked Questions
What class is the MeiStream Plus?
The data sheet describes it as a class C bulk meter for cold potable water.
Which sizes does it cover?
DN 40, 50, 65, 80, 100 and 150 at PN 16.
Is the metrological unit replaceable?
Yes, the metrological module is exchangeable and carries its own MID pattern approval.
Does it need straight inlet pipe?
No. It meets U0D0 per OIML R49:2013 and ISO 4064-1:2017.
Can it be read electronically?
Yes, through HRI-Mei or OD pulsers, or an encoder register with M-Bus, MiniBus, Sensus or IEC 1107 protocols.
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