VISIFERM TM; Optical Oxygen Sensors with Built-in Transmitter

VISIFERMTM is the first self-contained device for optical dissolved oxygen measurement. Combined within the 12mm shaft are: high-temperature compatible optical electronics, a microprocessor, a 4-20 mA analog sink, a digital ModBus, and an ECS interface (for use with existing DO transmitters)! The VISIFERMTM can be used with existing DO transmitters or the measurement signals to be fed directly into a
process control system.

Intelligent Sensor

•  Ingenious measurement optics, stable to 130°C, with a symmetrically oriented diagnostic and measurement design.
•  Monitoring of all sensor functions, including status and health of the replaceable sensor cap. A history of the self-monitoring is recorded in the sensor,
•  Configurable through the RS 485 interface with a PC or via ModBus

Operational Reliability is Paramount

Measurement results can be obtained from the sensor as 4-20 mA sink or digitally. Both types of signal are clearly more robust than the sensitive (nA) signals of a classical dissolved oxygen sensor. With VISIFERM dissolved oxygen sensors, the small currents are dispensed with as the measurement amplifier is built right into the sensor.