PLUGSYS Oxygen Partial Pressure Module (OPPM)

PLUGSYS Oxygen Partial Pressure Module (OPPM)

Used to measure oxygen concentrations with CLARK-style electrodes in biological fluids of isolated perfused organs

Item# Description U.S. List Price Quantity
73-0210 Oxygen Partial Pressure Module (OPPM)
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The Oxygen Partial Pressure Module (OPPM) is a polarographic amplifier for the PLUGSYS system. It is used to measure oxygen concentrations with CLARK-style electrodes.

The main application is recording of pO2 concentrations in biological fluids e.g. perfusate or effluate of isolated perfused organs, using the corresponding electrodes e.g. Mini Oxygen Electrode.

The digital display indicates either electrode polarization voltage, O2 concentration as percent or mmHg or the electrode current. The input circuit of the module includes an isolation amplifier (potential separation between sensing electrode and circuit ground of the PLUGSYS measuring system) to avoid measurement problems due to ground loops

Accuracy of Amplifier±1% (total accuracy depending on electrode)
Analog OutputFor simultaneous recording, using BNC connector on front panel (
ConnectorDIN 41612, 96-pin VG
Digital Display3-1/2 digit LED display displays O2 concentration in ranges 0 to 199.9% or 0 to 1999 mmHg; electrode current in range of 0 to 1.999 (ampere multiplied with gain factor) or polarization voltage in range from -1.000 V to +1.000 V can also be displayed
Gain AdjustmentInput current ranges for electrode currents: 10-6A, 10-7A, 10-8A, 10-9A, 10-10A full scale
Gain FineFor fine adjustment of gain
InputFloating single-ended input, max. isolated barrier internally clamped to 300 V
Input ConnectorIsolated BNC
Linearity of Amplifier±0.5%
PLUGSYS Width*2 slot units
Polarization VoltageAdjustable with trimmer between -1 and +1 V
Power Supply+ 5 V/450 mA
SimulationTwo physiological pO2 values can be simulated for calibrating recording output; this gives advantage of easy calibration procedure for connected chart recorder or data acquisition system
Zero AdjustmentCoarse zero current ranges: 10-8A, 10-9A, 10-10A, 10-11A, 10-12A
Zero FineFine adjustment for zero current