OXYmet series oxygen analysers use a miniaturised zirconium oxide cell based on the current-limiting effect in the diffusion region, known as the “Knudsen effect”. Compared with traditional technology, this advanced solution offers excellent performance in terms of long-term stability, operating temperature range, complete absence of periodic maintenance, low weight and compact dimensions.

Functions
The basic functions meet every type of application requirement and include:
– Microprocessor control
– Analysis display on a 4-digit LED display
– 2 fully user-configurable set-points with relay output
– Audible alarm
– Linear 4…20 mA output
– RS 232 serial output (standard) / RS 485 (optional), ModBus RTU protocol
– Programming using a rotary encoder and push-button
– Cell suitable for flow analysis and ambient monitoring
– Adjustable Zero and Span calibration using dedicated commands in the device menu

Applications
Process monitoring for synthetic air in hospitals
Process monitoring for air + O2 in hyperbaric chambers
Air monitoring for food-packaging applications
Process monitoring in industry and laboratories

Technical Data
Power supply: 220 Vac, 50/60 Hz, P max 6 VA, 0.5 A fuse
Measuring range: 0…2.5%, 0…25%, 0…70%, 0…95% Vol O2
Visual indication: No. 4-digit, 7-segment display
Alarm set-point 1: red LED Ø 5 mm
Alarm set-point 2: red LED Ø 5 mm
Audible alarm: speaker, max. 95 dB at 1 metre
Max. load: 700 Ohm; open-circuit voltage > 15 Vdc; common-negative configuration
N.O. and N.C. output switch; max. voltage 60 Vdc/220 Vac; max. current 1 A
Response time: < 30 seconds from 0 to 99% F.S.
Initial warm-up: 4 minutes
Combined error: < ±1% F.S.
Atmospheric pressure drift: negligible (included in combined error)
Long-term drift: < 2% F.S. over 5 years
Flow range: 0.5-15 l/min (flow applications only)
Pneumatic connections: 1/8″ F
External enclosure: black plastic, DIN 43700, panel mounting, dimensions 96 x 96 x 169 mm
Serial output: unidirectional RS 232 (standard), bidirectional RS 485 (optional)
Weight: 750 g
Operating temperature: 0…60°C
Certifications and reference standards: CE