Data acquisition is the process of sampling signals including Digital and Analogue that measure physical conditioners and then converting the samples to numeric values.
M-Bus Data Loggers
These monitoring units can monitor third-party meters using the M-Bus protocol. M-Bus stands for Meter-Bus and is a European standard (EN 13757-2/-3) for the remote reading for data logging of utility meters including electricity, gas and water. The data logging uses a two-wire, polarity-independent bus to connect sensors to one of the master data logging units shown below. M-Bus is a cost-effective, long-distance protocol ideal for capturing consumption data.
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What is M-Bus?
M-Bus or (Meter-Bus) is a communicaitons protocol for the remote reading of utilituy meters including electricity, gas, water and heat meters. The protocol allows for many meters to be connected to a single data collection base unit such as the Perseus Energy or Perseus devices, for automatic monitoring and usage billing.
Perseus Remote Energy Data Logging (up to 100 Meters, 1000 Variables)
The Perseus Energy 240 is a device designed to connect to HW group and third-party sensors (via Modbus/RTU) and connects to the Sensdesk portal. The Perseus Energy can be used as a Modbus/RTU to Modbus/TCP gateway. The device supports up to 100 energy meters (electricity, gas, water, with up to 1000 variables and can read values from other network devices via SNMP, Modbus/TCP, MQTT, BACnet, and XML. The Perseus 240 can also analyse metered data for local alarms, conditions and actions, and execute LUA scripts. The device is a gateway with no RJ-11 ports or Digital Inputs (DI).
The Perseus Energy 242 can collect data from external sensors, detectors and meters and report this over a physical LAN connection and connects to the Sensdesk portal. The device can monitor local conditions and execute LUA scrips and has a calendar and periodic scheduler. Perseus 242 has M-Bus Master, and can connect up to 100 meters with up to 1000 variables and also connect to external physical sensors for temperature (°C), relative humidity (%RH), Amps (A) and Voltage (V), and has detectors (relay/dry contacts) and a WLD (Water Leakage Detection) cable port. Third party sensors can also be connected to the device via LAN or Modbus/RTU. Email or SNMP Trap alerts can be sent from the device with measured values also available via a universal Open API (SNMP, Modbus/TCP, MQTT, BACnet, and XML). The Meters API also means that the Perseus 242 can read over a local area network connection, sensor values from other compatible devices from HW group for data for analysis or alarm reporting.
The Perseus Energy 285 is a DIN rail LAN and LTE solution for remote energy monitoring and control applications with M-Bus Master and connects to the Sensdesk portal for a quick and easy view dashboard. Additional physical sensors can be connected to the device, for example to record analog inputs for temperature monitoring (°C), relative humidity data (%RH), Amps (A) and Voltage (V) and the Pereus 285 also has detectors (relay/dry contacts) and a WLD (Water Leakage Detection) cable port. The Meters API also means that the Perseus 285 can also read over a LAN connection, sensor values from other compatible devices from HW group for data for analysis or alarm reporting. Third-party meters (sensors) can also be connected via directly via Modbus/RTU. LTE mobile backup connectivity allows the product to stay operational in case of an Ethernet outage with alerts reported via SMS, phone calls, email or SNMP Traps. Measured values are also available via an Open API (SNMP, Modbus/TCP, MQTT, BACnet, and XML). The Perseus 285 has a digital input and four digital output channels.
For more information on our range of M-bus compatible data logging devices please contact our Projects Team.

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