Multijet meter
MTWe - MI-001 - 915 MHz
Product categories
Water
Multijet consumption meter with electronic register
Water
Mechanical
Wireless
LoRaWAN
Smart Building
Your benefits
- Utility grade and sustainable technology (robust & high grade wear resistant materials with brass body):
Excellent measuring stability and reliability over meter lifetime and awareness of using a recyclable product - NFC Tap and go
Simple commissioning process - Plug & Play:
Easy and fast on-site installation with automatic radio activation (no programming required) - Performance driven design:
Range up to 10 miles (line of sight) - Integrated monitoring of connectivity and reconnecting mechanism:
Robust operation with automatic repair options, e.g. due to gateway failures
Applications
- Multi-Family residential and Retail/Commercial applications for consumption monitoring of water and identification of critical events
Downloads
Links
NSF certificateProperties
- Multijet dry-dial meter with magnetic coupling
- Measuring range R80
- Horizontal installation
- Maximum operating pressure 16 bar
- Maximum operating temperature 90 °C
- Typical battery lifetime up to 15 years
- 18 monthly volume key date values
Conformity according to European Measuring Instruments (MID)- NSF/ANSI 61-G & 372 certified and marked
- LoRaWAN transmission in license free 915 MHz frequency band
- Data security via AES-128-bit end-to-end encryption over 2 independent security layers
- ADR (adaptive data rate) support gives higher transmission intervals with consistent battery life
Product information
Electronic Register - Hybrid - Technology
(1) LCD
(2) Sensors
(3) Communication antenna
(4) NFC interface
- The ERH register is designed to detect the rotations of either two or four-pole magnets. Its electronic filter protects it from external magnetic disturbances, while two sensors filter and digitally convert the magnetic field.
- A highly efficient microcontroller is responsible for determining the rate and direction of flow while also having the capability to detect a range of events and alarms, such as backflow. Furthermore, the LCD display allows for maximum flexibility when viewing the measurement data.
- Lastly, the ERH register is fitted with an energy-saving, access-protected NFC interface for parameterization and activation, as well as a wireless communication transceiver for LoRaWAN 915 MHz.
Technical Data
| Nominal diameter | DN | mm | 25 | 40 |
| Operating pressure | PN | bar | 16 | 16 |
| Connection thread on meter (NPSM) | Inch | 1¼ | 2 | |
| Nominal flow rate | Q3 | m3/h | 6,3 | 16 |
| Overload flow rate | Q4 | m3/h | 7,875 | 20 |
| Transitional flow rate ± 3 % | Q2 | m3/h | 0,126 | 0,32 |
| Minimum flow rate ± 5 % | Q1 | m3/h | 0,079 | 0,2 |
| Smallest readable value | l | 1 | 1 | |
| Max. register reading | m3 | 1'000'000 | 1'000'000 | |
| Temperature | max. °C | 90 | 90 | |
| Measuring range | R80 | R80 |
| Dimensions and weights | ||||
|---|---|---|---|---|
| Length without couplings | A | mm | 260 | 300 |
| Height | B | mm | 135 | 160 |
| Height from pipe centre line | C | mm | 91 | 114 |
| Installation depth from pipe centre line | W | mm | 50 | 68 |
| Weight without couplings | kg | 2,6 | 5,2 | |
| Ambient conditions | |
|---|---|
| Ambient temperature | + 5 °C to + 55 °C |
| Transport & Storage temperature | - 20 °C to + 70 °C |
| Register protection class | IP67 |
| Power supply | |
|---|---|
| Lithium/Mangan battery (not replaceable) | 3 V DC |
| Typical battery lifetime (depending on environment and configuration conditions) | Up to 15 years |
| Approval | MTW3e |
|---|---|
| MI-001 No. CH-MI001-07005 | ■ |
| IC: 28165-ERH | ■ |
| Certifications | MTW3e |
|---|---|
| NSF/ANSI 61-G & 372 D.Hot / incl. cold | ■ |
| LoRa Alliance Certification (1.0.4 spec.) | ■ |
Measuring error curve
Typical Head Loss Curve
Dimension Diagram
Installation
| Pipeline: | horizontal |  |
| Meter head: | facing up |  |
Display, LoRaWAN specifications, data package
| Display | |
|---|---|
| LCD | 9 digits |
| Volume unit | m3 |
| Volume resolution | 0.001 m3 |
| Flow rate unit | m3/h or L/h |
| Test mode | T |
| Low battery Icon | see image 3) |
| Alarm Icon | see image 2) |
| Radio indicator (On/Off) and LoRaWAN connectivity status | see image 1) |
| LoRaWAN specifications | |
|---|---|
| Regional parameters (Frequency band) | US902-928 MHz ISM Band (902 - 928 MHz) |
| Transfer protocol (payload) | GWF specific |
| Radiated power | max. 20 dBm (100 mW) |
| Class | A |
| ADR (Adaptive data rate) | Yes |
| Activation type (LoRaWAN) | OTAA |
| Information data package | |
|---|---|
| DevEUI | 70B3D538700000AB |
| Meter manufacturer | GWF |
| Medium | Warm water |
| Meter S/N | 23132356 |
| Absolute meter reading (down to 15 min values) | 359.761 m3 |
| Remaining battery life | Semester |
| Alarms | Meter alarms, Low Battery, Burst pipe, Potential leak, Backflow, No Usage, Max. flow rate exceeded, Min./Max. temperature |