UNISENSE OPTO-SERIES Oxygen Optodes User Guide
- June 3, 2024
- UNISENSE
Table of Contents
**UNISENSE OPTO-SERIES Oxygen Optodes User Guide
**
Introduction
Important: Test sensor upon receipt.
This sensor has been successfully tested prior to shipping, however some
sensors suffer from rough transportation. Therefore, it is important that you
test the sensor upon arrival.
Replacement of defective sensors
Unisons will replace the sensor if it does not meet the specifications below, provided that:
- A test is performed upon receipt without breaking the seal (Note: No seal on MR-sensors for testing purposes)
- The complaint is given to Unisons within two weeks from receipt of the equipment
Guaranteed lifetime
Unisons guarantees the opt ode sensor a minimum lifetime of 1 year or a 1 million data points, whichever comes first, on condition of correct storage and use according to the manual.
individual sensor calibration is Required
Our sensors are handmade and as the sensor signal relies on the exact geometry of the sensor tip (micrometer scale), some variation must be expected.
Signal amplification
Unisons oxygen opcodes should be connected to a Opto-series or Uni Amp-series amplifier
Standard oxygen opcodes are functioning correctly if (at Room temperature):
- The 90 % response time is within the specified range (see table below)
- The uncalibrated phase is within the specified range (see table below
| O PTO -430| O PTO -430 FAST| O PTO
-MR| O PTO -50| O PTO -3000
---|---|---|---|---|---
90 % response time (in sec.)| < 3 sec| < 0.3 sec| < 3 sec| < 5 sec| < 15
sec
100 % air saturation – phase| < 22| < 22| < 22| < 22| < 22
0 % oxygen – phase| > 46| > 46| > 46| > 40| > 46
Minimum data points (millions)| 1.5| 1| 1.5| 1| 3
Unpacking
- Remove the grey shock-absorbing plastic net and inspect the sensor visually.
Leave the sensor in the protection tube for testing.
Connect the opt ode to the opto- or uni amp-series amplifier
- Remove the cap from the Micro Optode connector and from the amplifier connector.
- Insert the opt ode plug into the connector on the amplifier and turn gently clockwise until the plug is locked firmly.
- Insert the E2PROM connector on the opt ode into the E2PROM connector on the amplifier (no E2PROM on OPTO-Field sensors).
Unisense Micro Optode
Calibrate The Sensor
-
Use air saturated water as one calibration point. This is easily done using the CAL300 calibration chamber. The sensor may be dipped directly into the calibration chamber or the air saturated water may be injected into the protection tube using the calibration cap (see picture).
-
Use the Unisons zero O2 solution as the second calibration point.
Inject the zero O2 solution into the calibration cap and wait for the sensor to respond. -
For alternative calibration method, see the Oxygen Micro OptodeOpto Series User Manual.
**CAL300 with microsensors and bubbling with air.
Injecting calibration liquid into protection tube using the calibration cap.
**
Approve The Sensor
- Compare the calibration values to the specifications given on the previous page. If necessary, see Troubleshooting in the optode manual or contact support (see below)
Adjusting the measurement frequency.
- The lifespan of the optodes is determined by the amount of measurements. In order to prolong the lifespan of the optode, adjust the measuring frequency as required for your application.
- The frequency can be adjusted in the Sensor Trace software
Storage
- When not in use unplug the optode and store it with the protection tube mounted at room temperature (preferable in low light or darkness).
Useful Tools
O2 Micro Optode Manual
Scan Me
Calkit-O2 Manual
Scan Me
Sensor Trace Suite Manual
Scan Me
Find SDS for Calibration Kit here
Scan Me
Customer Support
For support go to
www.unisense.com/support or contact
[email protected]
Get the full manuals for all
sensors, equipment & software at
www.unisense.com/manuals
