TecMicro O2-Oxygen Sensors are chemical gas sensors capable of measuring oxygen levels ranging from a few parts per billion to 100% O2 by volume in ambient air or liquid, depending on the specific model.
These gas detection solutions are highly sought after in breweries, modified atmosphere packaging, head-space gas testing, bio-incubators, respirometers, and algae or aquatic applications.
Features
- ATEX II approved for use in explosive atmospheres
- Fast and accurate
- Measure oxygen level in gas or liquid models
- Measure from 0 ppb to 100% oxygen (depending on the model)
- Optical sensor not sensitive to hydrogen or CO2
As it is all stainless steel, the TecMicro O2 oxygen Sensors can be used in clean-in-place (CIP) and sterilize-in-place (SIP) applications like incubation, brewing, or in the pharmaceutical or food processing industries. The sensor can withstand high temperatures, high pressure, cleaning agents, and anti-bacterial compounds.
Models
The following variants have a 5 VDC converter and an RS485 to USB connector, enabling direct communication between the sensor and the free GasLab software. A 1/2" fine thread connector is readily available in stock, while other connectors can be provided upon request.
Gas Models
- TS-402: Low: 0-5%
- TS-403: Medium: 0–22%
- Trace: 0-2,000 ppm for TS-401
- High Range: 0–100% for TS-404
Liquid Models
- TS-408: High Range: 0–40 mg/L
- TS-407: Medium: 0–10 mg/L
- TS-406: Low: 0-2,000 ppb (2 mg/L)
- Trace: 0-200 ppb, TS-405
- All versions are compatible with the TS-101 Stainless Steel 1/2" Calibration Gas Tee
Specifications - All
- Average LED Lifetime: 10,000+ hours
- Cleaning: No organic solvents, 40% EtOH
- Connection: ½“ stainless steel hex nut
- Data Interface: RS485 non-Modbus
- Data Output: digital USB or RS485 non-Modbus
- Dimensions: 12 mm x 60 mm (½“-connector)
- Materials touching sample: St.1.4404/PTFE/Glass
- Manufacturer's recommended service interval: 3 years
- Power supply: 5 VDC
- Protection: IP65
- Pressure compensation: STP by default. Change in software
- Sensor cap replacement interval: 12 months or more
- Recommended zero-point calibration interval: 3 months
- Temperature compensation: -4 °C-40 °C (39 °F-104 °F)
- Temperature range: -10 °C-60 °C (14 °F-140 °F)
Specifications - Models
TS-401 Trace Gas: 0-2,000 ppm
- Accuracy 1000-2000 ppm: ± 4% MV
- Accuracy 100-1000 ppm: ± 3% MV
- Accuracy 0-100 ppm: ± 2% MEV
- Response Time at 25°C: <15 seconds
- Resolution: 1 ppm
- Maximum Pressure: 5 bar
- Expected cap lifetime: 1 year
TS-402 Low Range: 0-50,000 ppm (5%)
- Accuracy 2.5-5%: ± 2% MV
- Accuracy 0.5-2.5%: ± 2% MV
- Accuracy 0-0.5%: ± 2% MEV
- Response Time at 25 °C: 5 seconds w/o protective layer
- Resolution: 0.001%
- Maximum Pressure: 5 bar
- Expected cap lifetime: 2 years
TS-403 Standard: 0-220,000 ppm (22%)
- Accuracy 15-22%: ± 3% Mev
- Accuracy 5-15%: ± 3% Mev
- Accuracy 0-5%: ± 2% Mev
- Resolution: 0.001%
- Response Time at 25 °C: 5 seconds w/o protective layer
- Maximum Pressure: 5 bar
- Expected cap lifetime: 2 years
TS-404 High Range: 0-100%
- Accuracy 22-100%: ± 5% MV
- Accuracy 5-22%: ± 4% MV
- Accuracy 0-5%: ± 3% MEV
- Resolution: 0.001%
- Response Time at 25 °C: 0.5 seconds w/o protective layer
- Maximum Pressure: 5 bar
- Expected cap lifetime: 2 years
TS-405 Trace Liquid: 0-200 ppb
- Accuracy: 0-200ppb: ± 2% MEV
- Resolution: 1 ppb
- Response Time at 25 °C: <20 seconds
- Maximum Pressure: 20 bar
- Expected cap lifetime: 1 year
TS-406 Low Range: 0-2,000 ppb (0-2 mg/L)
- Accuracy: 1000-2000 ppb: ± 2% MV
- Accuracy: 200-1000 ppb: ± 2% MV
- Accuracy: 0-200 ppb: ± 2% MEV
- Resolution: 1 ppb
- Response Time at 25 °C: <20 seconds
- Maximum Pressure: 20 bar
- Expected cap lifetime: 1 year
TS-407 Medium Range: 0-10 mg/L
- Accuracy: 8-10 mg/L: ± 3% MV
- Accuracy: 2-8 mg/L: ± 3% MV
- Accuracy: 0-2 mg/L: ± 2% MEV
- Resolution: 0.001 mb/L
- Response Time at 25 °C: <20 seconds
- Maximum Pressure: 20 bar
- Expected cap lifetime: 2 years
TS-408 High Range: 0-40 mg/L
- Accuracy: 0-2 mg/L: ± 3% MEV
- Accuracy: 2-8 mg/L: ± 4% MV
- Accuracy: 8-10 mg/L: ± 4% MV
- Accuracy: 10-40 mg/L: ± 5% MV
- Resolution: 0.001 mg/L
- Response Time at 25 °C: <20 seconds
- Maximum Pressure: 20 bar
- Expected cap lifetime: 2 years
- MEV = Measured end value
- MV = Measured value
Dissolved Liquid Cross Sensitivity
While the TecMicro has low cross-sensitivity (is monoscopic) to other gases, dissolved oxygen sensors can be sensitive to the following:
- Gaseous sulfur dioxide (SO2) or chlorine (CL2)
- Alcohols greater than 5%
- Hydrogen peroxide (H2O2) greater than 3%
- Sodium hypochlorite (NaClO, commercial bleach) greater than 3%
If the measurements exhibit instability despite following other troubleshooting procedures, it is possible that interfering substances are present in the solution.
None of the following interfere:
- Carbon Dioxide (CO2)
- Hydrogen sulfide (HS-)
- pH, or any ionic species like sulfide (S2-), sulfate (SO4-2), chloride (Cl-)
- Ammonia (NH3) pH
Software
The TecMicro features a free software utility that enables users to graph oxygen levels over time, save data, calibrate the sensor, and update the calibration when installing a new sensor cap.
System Requirements
- Version XP SP2 or newer
- Microsoft Runtime Libraries for .Net 3.5