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The VisiFerm DO is the first optical oxygen sensor with integrated opto-electronics, having the full functionality of a measuring device with self-diagnostics. It is steam sterilizable, autoclavable and CIP compatible. The VisiFerm requires less maintenance than a classical oxygen sensor as it does not have a mechanically sensitive membrane or a corrosive electrolyte
Sensor Output | Traditional: mA |
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Diameter | 12 mm |
Length | 120 mm |
Operating Temperature Range | -10 to 140 °C; the sensor provides no DO reading above 85 °C |
Pressure Range | -1 to 12 bar |
ATEX Approval | No |
Accuracy at 25 °C | 1 ± 0.05 %-vol: 21 ± 0.2 %-vol; 50 ± 0.5 %-vol |
Analog Interface 1 | 4 to 20 mA for DO, programmable, galvanically not isolated; pulse width modulation 5 kHz |
Autoclavable | Yes, Maximum Temperature 130 °C |
Baud Rate | 4800, 9600, 19200, 38400, 57600,115200 Bd |
CIP | Yes |
Configurable Values | DO: mbar; %-sat; %-vol; µg/l; mg/l; ppb/ppm (dissolved oxygen); Temperature: °C, °F, K |
Digital Interface | RS485 Modbus (Maximum 31 addresses) |
Drift at Room Temperature | < 1 % per week |
Electrical Connector | VP8 |
IECEx Approval | No |
Measurement Principle | Oxygen dependent luminescence quenching, temperature compensation |
Measuring Range | 4 ppb to 25 ppm (DO) 0 to 62.85 %-vol or 0 to 300 %-sat |
Operating Voltage | 7 to 30 VDC Maximum 1 W |
Parameter | DO (Optical) |
Process Connection | PG13,5 |
Response Time | t98% < 30 s at 25 °C |
Sensor Cap | ODO Cap H0 |
Sensor Family | VisiFerm |
Serial Number | Yes |
Steam Sterilizable | Yes, Maximum Temperature 140 °C |
Surface Quality of Steel | Ra < 0.4 µm (N5) |
Temperature Sensor | NTC 22 kOhm |
Wetted Parts | Stainless Steel 1.4435 \nEPDM (Ethylene propylene elastomer) \nSilicone - FDA 21 CFR 177.2600 \nVMQ (Silicone elastomer) |
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