Emonhub Modbus E+E Air Velocity EE671 & Co2 sensors EE872

Hardware
,
1

Emonhub Modbus RTU Interface for E+E sensors

These are the default modbus setting for these sensors. The Modbus settings can be changed using the E+E PCS10 config utility (Windows only)

Pinout sensor cable (195271) HA010832:

  • Gray VCC (10-29V DC)

  • Green GND

  • Brown Modbus D-

  • Yellow Modbus D+

  • White N/C

EE671 Air Velocity Sensor

    [[EE]]
        Type = EmonHubMinimalModbusInterfacer
        [[[init_settings]]]
            #device = /dev/serial/by-id/usb-1a86_USB_Single_Serial_5A7F002896-if00
            device = /dev/ttyACM*
            baud = 9600
            parity = even
        [[[runtimesettings]]]
            pubchannels = ToEmonCMS,
            read_interval = 10
            nodename = heatpump
            [[[[meters]]]]
                [[[[[EE671]]]]]
                    address = 238
                    byteorder = 3 #Endian.BIG
                    registers = 25,31
                    datatypes = float,float
                    functioncodes = 3,3
                    precision = 1,1
                    names = temperature, velocity
                    units = C, m/s

EE872 Co2, Temperature, Pressure & RH

    [[EE]]
        Type = EmonHubMinimalModbusInterfacer
        [[[init_settings]]]
            #device = /dev/serial/by-id/usb-1a86_USB_Single_Serial_5A7F002896-if00
            device = /dev/ttyACM*
            baud = 9600
            parity = even
        [[[runtimesettings]]]
            pubchannels = ToEmonCMS,
            read_interval = 10
            nodename = heatpump
            [[[[meters]]]]
                [[[[[EE872]]]]]
                    address = 237
                    byteorder = 3 #Endian.BIG
                    registers = 1002, 1104, 1060, 1062, 1200, 1202, 1020
                    datatypes = float, float, float, float, float, float, float
                    functioncodes = 3,3,3,3,3,3,3
                    precision = 1,1,1,1,1,1,1
                    names = temperature, temperature_dewpoint, co2_avr, co2_raw, pressure_mbar, pressure_psi, RH
                    units = C, C, ppm, ppm, mbar, psi, %

Both Together

  [[EE]]
        Type = EmonHubMinimalModbusInterfacer
        [[[init_settings]]]
            device = /dev/serial/by-id/usb-1a86_USB_Single_Serial_5A7F002896-if00
            #device = /dev/ttyACM*
            baud = 9600
            parity = even
        [[[runtimesettings]]]
            pubchannels = ToEmonCMS,
            read_interval = 10
            nodename = heatpump
            [[[[meters]]]]
                [[[[[EE872]]]]]
                    address = 237
                    byteorder = 3 #Endian.BIG
                    registers = 1002, 1104, 1060, 1062, 1200, 1202, 1020
                    datatypes = float, float, float, float, float, float, float
                    functioncodes = 3,3,3,3,3,3,3
                    precision = 1,1,1,1,1,1,1
                    names = temperature, temperature_dewpoint, co2_avr, co2_raw, pressure_mbar, pressure_psi, RH
                    units = C, C, ppm, ppm, mbar, psi, %
                [[[[[EE671]]]]]
                    address = 238
                    byteorder = 3 #Endian.BIG
                    registers = 25,31
                    datatypes = float,float
                    functioncodes = 3,3
                    precision = 1,1
                    names = temperature, velocity
                    units = C, m/s
2

This EE671 Modbus air velocity sensor could be very useful for A2A heat pump and or MVHR monitoring @John_Ewbank

2 Likes
3

Hi Glyn, have OEM looked much into MVHR efficiency monitoring?

I think it could be interesting to have some 3rd party monitoring of some systems to work out what units perform best in the real world as opposed to advertised unit efficiencies.

I think you’d have to monitor airflow rate (maybe velocity and knowledge of duct size), intake, supply and extract temperatures (and humidities if ERV) and power consumption.

Some of that info could maybe be obtained from the unit fairly accurately (e.g. temperatures) but few units measure airflow and when they do it isn’t the most accurate.

To get better info about the system it would also be good to know static pressure of the system but maybe this could be a one off measured at commissioning value.

Any sensors I’ve looked into have gotten fairly expensive quickly.

I work for a company designing MVHR systems so it would be good for comparing units and proving system performance.

4

14 posts were split to a new topic: Installing MVHR