TecMicro O2-Oxygen Sensors

TecMicro O₂-Oxygen Sensorsarechemical 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. A1/2" 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

Accuracy1000-2000ppm:±4% MV

Accuracy100-1000ppm:±3% MV

Accuracy 0-100 ppm:± 2% MEV

Response Time at25°C:<15 seconds

Resolution:1 ppm

MaximumPressure: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 at25 °C:5 seconds w/o protective layer

Resolution:0.001%

MaximumPressure: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 at25 °C: 5 seconds w/o protective layer

MaximumPressure: 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 at25 °C: 0.5 seconds w/o protective layer

MaximumPressure: 5 bar

Expected cap lifetime: 2 years

TS-405 Trace Liquid: 0-200 ppb

Accuracy:0-200ppb:± 2% MEV

Resolution: 1 ppb

Response Time at25 °C: <20 seconds

MaximumPressure: 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 at25 °C: <20 seconds

MaximumPressure: 20 bar

Expected cap lifetime: 1 year

TS-407 Medium Range: 0-10 mg/L

Accuracy: 8-10mg/L:± 3% MV

Accuracy: 2-8 mg/L:± 3% MV

Accuracy:0-2 mg/L:± 2% MEV

Resolution: 0.001 mb/L

Response Time at25 °C: <20 seconds

MaximumPressure: 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: 8-10mg/L:± 4% MV

Accuracy: 10-40mg/L:± 5% MV

Resolution: 0.001 mg/L

Response Time at25 °C: <20 seconds

MaximumPressure: 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 (S^2-), 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