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6.2.2 Advanced SettingsIf Advanced Sensor Settings are chosen, more complex settingcontrols get visible. Please ensure that the correct sensor codeattached to the sensor has beenentered in the field Sensor Code.For robust probes (sensor type: X),the Fiber Length (m) of theconnected robust probe must beentered.For contactless sensors (sensorspots, flow-through cells, respirationvials; sensor type: S, W, T), the FiberLength (m) of the connected opticalfiber must be entered. Alternatively,it is possible to select ManualBackground Compensation, whichis described in detail in chapter 9.2.Finally, the backgroundcompensation can be completelyde-activated by selecting No Background Compensation.NOTE: Generally it is advised to select Fiber Length (m) and toenter there the fiber length. The alternative options ManualBackground Compensation or No Background Compensationare only intended for advanced users (see also chapter 9.2).The Advanced Measuring Parameters comprise the LEDIntensity for excitation of the REDFLASH indicator (in %) and theAmplification of the sensor signal (default: 200x). As a rule ofthumb, the LED Intensity should be 10-30% for microsensors,minisensors and robust probes, but can be increased up to 100%for contactless sensors (sensor spots, flow-through cells,respiration vials). The Amplification should be typically chosen as38
80x, 200x or 400x. Note, that varying the LED Intensity and theAmplification has direct influence on the signal intensity andtherefore on the signal-to-noise-ratio.The Oxygen Measuring Time (default: 10 ms) defines theintegration time for the acquisition of a single data point. Shortermeasuring times provide low long-term drift, whereby longermeasuring times assure less noise. The maximal possible value is250 ms.NOTE: If using the Advanced Sensor Settings, it is recommendedto perform a 2-Point calibration of the oxygen sensor. Later readjustmentsin the Advanced Settings might require also arecalibration of the sensor.6.2.3 Conditions in the SampleThe next step is the determination of the Conditions in theSample, which can be Water for dissolved oxygen (DO) or a GasPhase.Further, it needs to be selected ifduring the measurements thetemperature will be determined bythe External Temperature Sensorconnected to the FireStingO2, bythe Internal Temperature Sensorof the FireStingO2 (only possiblefor measurements in a Gas Phase!)or if measurements are performedat a Fixed Temperature (seechapter 10).If External Temperature Sensor or Internal Temperature Sensor(in a Gas Phase) is selected, automatic temperature compensation39
Page 2 and 3: Document Version 3.07Refers to Pyro
Page 4 and 5: 7.1.6 Calibration Mode: Custom Mode
Page 6 and 7: 1 OverviewThe compact USB-powered f
Page 8 and 9: 2 Safety GuidelinesThe FireStingO2
Page 10 and 11: Before using the FireStingO2 and it
Page 12 and 13: The FireStingO2 comes with 1, 2, or
Page 14 and 15: 5 Oxygen Sensor TypesFor an overvie
Page 16 and 17: position 0 (retracted position) of
Page 18 and 19: (P) to the oxygen meter FireStingO2
Page 20 and 21: oxygen towards the 3 mm tip has a m
Page 22 and 23: It is important to fix or glue the
Page 24 and 25: 5.7 Connecting the SensorsThe fiber
Page 26 and 27: The bare fiber sensors need to be s
Page 28 and 29: Note that placing the mouse on many
Page 30 and 31: The unit of the x-axis can be chang
Page 32 and 33: Signal too high There might be too
Page 34 and 35: continuous sampling (default settin
Page 36 and 37: In the settings the user has to def
Page 40 and 41: of the respective oxygen sensor rea
Page 42 and 43: After activation of a temperature s
Page 44 and 45: The activation of the Analog In but
Page 46 and 47: 6.4 Raw Data WindowThe Raw Data Win
Page 48 and 49: 7 Calibration with “Pyro Oxygen L
Page 50 and 51: calibration in air saturated water
Page 52 and 53: If the Sensor code is correct, the
Page 54 and 55: NOTE: If using retractable needle-t
Page 56 and 57: NOTE: If using retractable needle-t
Page 58 and 59: Note that the button Set 0% will be
Page 60 and 61: (°C). Note that the button Set Air
Page 62 and 63: And for the 0% calibration the foll
Page 64 and 65: Consequently, the 0% calibration sh
Page 66 and 67: 7.2.1 Calibration Mode: Factory (1.
Page 68 and 69: due to the actual weather condition
Page 70 and 71: Wait for steady state until the sen
Page 72 and 73: 7.3 Advanced adjustmentsThis sectio
Page 74 and 75: 8 Calibration Standards8.1 The Air
Page 76 and 77: elevation the typical atmospheric p
Page 78 and 79: 8.2 The 0% StandardThe 0% calibrati
Page 80 and 81: 9 Calibration of Contactless Sensor
Page 82 and 83: one end of the Optical Fiber is con
Page 84 and 85: 10.3 Automatic Temperature Compensa
Page 86 and 87: 11 Analog Output and Auto-ModeThe s
Page 88 and 89:
voltage signals proportional to the
Page 90 and 91:
Here the Auto-Mode Sample Interval
Page 92 and 93:
trigger signal was detected at the
Page 94 and 95:
External Temperature Sensors*Range,
Page 96 and 97:
Pin Name Function Description1 GND
Page 98 and 99:
Auto-Mode with External Power Suppl
Page 100 and 101:
12.2.2 Connector X2 (Analog Output)
Page 102 and 103:
12.4 Measuring PrincipleThe new RED
Page 104 and 105:
12.5 Operating several FireStingO2
Page 106 and 107:
with p100 O2 = 0.2095 ( p atm - p H
Page 108 and 109:
Sal(PSU)Temp0(°C)5 10 15 20 25 30
Page 110:
LED IntensityA 10% E 40%B 15% F 60%
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