- Details
- More images
- Customer-tip
Products description
greenMeter V2
We are excited to introduce the greenMeter, a new battery monitor developed to accurately measure currents. After over two years of development, we are proud to have achieved a measurement error of less than 0.04%.
New in the V2 Version:
- Significantly smaller housing.
- Shape of the copper rails.
Why is Measurement Accuracy Important?
In off-grid power systems, the challenge often lies in measuring relatively high currents while simultaneously accounting for very small standby consumers. These small consumers, which are present 24/7, significantly affect the accurate determination of the battery’s state of charge (SOC). A precise measurement is also crucial for detecting and preventing "leakage currents," which can impact the performance and safety of the battery system.
Losses in the Shunt?
More accurate sensors typically exhibit a higher voltage drop, leading to greater losses. The reason is that larger voltage differences across the shunt allow for better measurement. However, we've managed to keep the resistance very low. The losses are typically smaller than those caused by the losses in a fuse for the corresponding current, as detailed in the provided table.
Key Functions of greenMeter V2:
greenMeter V2 is a high-precision battery monitor that accurately measures current in both directions (bidirectional). It also measures the battery voltage through two sense lines. With the internal ampere-hour counter, it calculates the State of Charge (SOC) accurately. The two relay outputs can disconnect the load or charging process if the current is too high or if temperatures are too high or low. GreenMeter can be integrated into the positive line, unlike many other solutions. For separate measurement of charging and discharging currents, multiple greenSwitches can be used in the system. Targeted measurement of individual consumers is also possible. Up to 247 devices can be connected via the bus, making it highly flexible for different setups.
Display Options for greenMeter V2:
Der Betrieb mit folgenden Display ist aktuell möglich:
- greenView: Color TFT Display with touch functionality.
- greenViewM: ECS app for Android, via Wi-Fi converter.
- ECS Kommtool: PC/Notebook software via Wi-Fi or USB connection.
- greenView Desktop: PC/Notebook software for connecting to greenView via TCP-IP network.
- Third-Party Software: Thanks to the open standard protocol (Modbus RTU), integration with third-party software is possible.
| Parameter | greenMeter V2 | Competitor Vi | Competitor Vo |
| Current Resolution | 0,001 A | 0,01 A | 0,1 A |
| Voltage Resolution | 0,001 V | 0,01 V | 0,1 V |
| Current Measurement Accuracy | < 0,04 % FS | 0,4 % FS | ??? |
| Voltage Measurement Accuracy | < 0,1 % FS | 0,3 % FS | ??? |
| Shunt Resistance (500A Version) | 125 µOhm | 100 µOhm | ??? |
| Shunt Position | Positive or Negative Line | Negative Line | Negative Line |
Overview of All Parameters:
| Mechanical Data | |
| Dimensions (L x W X H) | Approx. 174 mm x 120 mm x 50 mm |
| Weight | 0,85 kg |
| Cable Cross-section for In/Out Connections | 0,15 – 1,3 mm2 |
| Drill Holes for High-current Connections | 8,5 mm 10,5 mm |
| Busbar Cross-section | 250 mm² |
| Protection Class | IP 30 |
| Electrical Data | |
| Supply Voltage | 5,0 V +- 2 % (via RS485 BUS connection) |
| Power Consumption | < 100 mW |
| Max Voltage at Measurement Shunt | -4 bis +60 V |
| Measurement Shunt Resistance | 125 μOhm (500 A Version) 250 μOhm (250 A Version) 500 µOhm (125 A Version) |
| Current Measurement Range | +/- 500 A +/- 250 A +/- 125 A |
| Total Maximum Error (Includes offset error, linearity error, temperature drift, and common-mode error) | < 0,04 % FS (Guaranteed over temperature range of -10 to +50°C) (Guaranteed over common-mode range 12 - 48V) |
| Offset Error: | < 0,005 % FS (Guaranteed over temperature range of -10 to +50°C) (Guaranteed over Common Mode 12 - 48V) |
| Testing | Every device is tested. Automatic test and calibration system. Current measurement is tested with 5 test points. Voltage measurements are tested with 5 test points. Common mode error is tested with 2 test points. |
| Voltage Measurement | |
| Battery Voltage Measurement Range | - 60 V bis + 60 V |
| Total Maximum Error (Includes offset error, linearity error, and temperature drift) | 0,1 % FS (max) |
| Environmental Data | |
| Operating Temperature | - 20 °C bis + 65 °C (Maximum current 350 A) - 20 °C bis + 50 °C (With maximum current) |
| Storage Temperature | - 30 °C bis + 80 °C |
| Humidity | bis 100 %, nicht kondensierend |
| Degree of Contamination | 2 |
| Communication | |
| Bus Systems | RS485 Interface |
| Protocol | Modbus RTU |
| Baud Rate | Adjustable 9600 to 460800 (Factory default: 19200) |
| Parity | Adjustable Even/Odd/None (Factory default: Even) |
| Stop Bits | 1, 1.5, or 2 (Factory default: 1) |
| Switching Outputs | |
| Number and Type | 2 x Electronic Relays, Max 65V / 1A |
Customers who bought this product also bought the following products:
Adapter screw M12 for BMS Systems.
Prefabricated cable set for simple and fast wiring of balancing connectors (LiPro1-6 active). Set Includes fuse holder, fuse and spare fuse.
Ribbon cable :
- 100mm length - 6 pin - FEMALE IDC CONNECTEUR on both sides
Ribbon cable :
- 190mm length - 6 pin - FEMALE IDC CONNECTEUR on both sides
This Product was added to our catalogue on 17/02/2022.
Die Box kann unter tpl_modified_responsive/boxes/box_miscellaneous.html verändert werden. Die Sprachvariablen befinden sich in der Datei tpl_modified_responsive/lang/german/lang_german.custom.