E+E Elektronik EE680 - Air Velocity Sensor for Laminar Flow Monitoring
Measures air velocity and temperature for laminar flow monitoring in cleanrooms.
The E+E Elektronik EE680 is an air velocity and temperature sensor designed for laminar flow monitoring in cleanrooms and safety cabinets. This Modbus RTU template reads airflow and temperature values from the sensor. It is intended for GMP-compliant environments in pharmaceutical and laboratory settings.
- Protocol
- Modbus RTU
- Connection
- RS485, 9600 baud
- Registers
- 2, read only
- Brand
- E+E Elektronik
- Key readings
- Airflow · Temperature
- Compatible models
- EE680
- Last updated
Registers (2)
2 read, 0 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| Airflow | m/s | Read | |||
| Temperature T | °C | Read |
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Use cases
- Monitor real-time air velocity in cleanroom laminar flow hoods from a centralized cloud dashboard.
- Create an alert when airflow drops below the minimum threshold required for GMP-compliant operation.
- Log temperature trends in safety cabinets to support compliance reporting and audit documentation.
- Compare airflow readings across multiple EE680 sensors installed in different cleanroom zones.
- Detect deviations in laminar flow early to prevent contamination events in pharmaceutical production areas.
Installation
Connect the EE680 sensor to the RS-485 terminals (A, B, GND) of your ModbusCloud Gateway.
Verify that the EE680 is configured to communicate at 9600 baud with odd parity (default settings).
Set a unique Modbus RTU slave address on the EE680 if multiple devices share the same bus.
Import the E+E Elektronik EE680 template in the ModbusCloud platform and assign it to the connected gateway.
Confirm that airflow (register 1044) and temperature (register 1002) values appear correctly on your dashboard.
Things to watch for
I see zero or incorrect values for airflow and temperature. What should I check?
Both registers (1044 and 1002) use float32 encoding, which spans two consecutive Modbus registers. Verify that the byte order and word order settings in the gateway match the EE680 output. Also confirm that the correct slave address is configured.
What baud rate and parity settings does the EE680 use by default?
The default communication settings are 9600 baud with odd parity (1 stop bit). These must match the configuration on your ModbusCloud gateway for successful communication.
Can I connect multiple EE680 sensors on the same RS-485 bus?
Yes. Assign a unique Modbus slave address to each EE680 sensor. Then create a separate device entry in ModbusCloud for each address, all using the same EE680 template.
How accurate is the airflow reading at very low velocities?
The EE680 is rated for accuracy down to 0.1 m/s (20 ft/min) thanks to its thin film sensing element. Below this threshold, readings may become less reliable.
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