Sensors

Here you will find a wide selection of spare sensors for your flue gas analyzers. Find an assortment of sensors including CO, NO, H2S and NO2 to fit your application.


Testo 835-H1 Infrared Thermometer with integrated humidity module, -30 to 600°C-

Testo 835-H1 Infrared Thermometer with integrated humidity module, -30 to 600°C
Model: 835-H1 | Order No: 0560 8353

Sale Price $538.05 USD
Regular Price $633.00 USD
Availability 1 Week

Qty:

Sale Price $538.05 USD
Regular Price $633.00 USD
Availability 1 Week
Quantity

Testo 440 dP Air Velocity and IAQ Measuring Instrument with differential pressure sensor and digital vane probes, ø 3.9 and 0.63"-

Testo 440 dP Air Velocity and IAQ Measuring Instrument with differential pressure sensor and digital vane probes, ø 3.9 and 0.63"
Model: 440 | Order No: 0563 4410

Sale Price $2340.90 USD
Regular Price $2754.00 USD
Availability 3 to 4 Weeks

Qty:

Sale Price $2340.90 USD
Regular Price $2754.00 USD
Availability 3 to 4 Weeks
Quantity

Testo 440 dP Air Velocity and IAQ Measuring Instrument with differential pressure sensor and digital vane probe, ø 3.9"-

Testo 440 dP Air Velocity and IAQ Measuring Instrument with differential pressure sensor and digital vane probe, ø 3.9"
Model: 440 | Order No: 0563 4409

Sale Price $1882.75 USD
Regular Price $2215.00 USD
Availability 5 Days

Qty:

Sale Price $1882.75 USD
Regular Price $2215.00 USD
Availability 5 Days
Quantity

Testo 440 dP Air Velocity and IAQ Measuring Instrument with differential pressure sensor-

Testo 440 dP Air Velocity and IAQ Measuring Instrument with differential pressure sensor
Model: 440 | Order No: 0560 4402

Sale Price $603.50 USD
Regular Price $710.00 USD
Availability 3 in Stock

Qty:

Sale Price $603.50 USD
Regular Price $710.00 USD
Availability 3 in Stock
Quantity

Testo 400572 9999 Alarm Module-

Testo 400572 9999 Alarm Module
Model: 400572 9999

Sale Price $419.90 USD
Regular Price $494.00 USD
Availability 2 to 3 Weeks

Qty:

Sale Price $419.90 USD
Regular Price $494.00 USD
Availability 2 to 3 Weeks
Quantity

Testo 316-3 Replacement Sensor-

Testo 316-3 Replacement Sensor
Model: 0554 2610

Sale Price $113.05 USD
Regular Price $133.00 USD
Availability 1 to 2 Weeks

Qty:

Sale Price $113.05 USD
Regular Price $133.00 USD
Availability 1 to 2 Weeks
Quantity

Testo 175 H1 2-Channel Temperature/Humidity Data Logger with external RH Sensor-

Testo 175 H1 2-Channel Temperature/Humidity Data Logger with external RH Sensor
Model: 175 H1 | Order No: 0572 1754

Sale Price $500.65 USD
Regular Price $589.00 USD
Availability 1 Week

Qty:

Sale Price $500.65 USD
Regular Price $589.00 USD
Availability 1 Week
Quantity

Testo 0699 6647/31 Replacement Sensor Assembly for 6447-

Testo 0699 6647/31 Replacement Sensor Assembly for 6447
Model: 0699 6647/31

Sale Price $2011.10 USD
Regular Price $2366.00 USD
Availability 2 to 3 Weeks

Qty:

Sale Price $2011.10 USD
Regular Price $2366.00 USD
Availability 2 to 3 Weeks
Quantity

Testo 0699 6446/31 Testo Replacement Sensor Assembly for 6446-

Testo 0699 6446/31 Testo Replacement Sensor Assembly for 6446
Model: 0699 6446/31

Sale Price $2067.20 USD
Regular Price $2432.00 USD
Availability 2 to 3 Weeks

Qty:

Sale Price $2067.20 USD
Regular Price $2432.00 USD
Availability 2 to 3 Weeks
Quantity

Testo 0572-2021 160-TH WiFi Data Logger with integrated temperature and humidity sensor-

Testo 0572-2021 160-TH WiFi Data Logger with integrated temperature and humidity sensor
Model: 0572 2021

Sale Price $255.00 USD
Regular Price $300.00 USD
Availability 1 to 2 Weeks

Qty:

Sale Price $255.00 USD
Regular Price $300.00 USD
Availability 1 to 2 Weeks
Quantity

Testo 0554 4515 Replacement Refrigerant Sensor for 514 and 515 leak detectors, R290-

Testo 0554 4515 Replacement Refrigerant Sensor for 514 and 515 leak detectors, R290
Model: 0554 4515

Sale Price $182.75 USD
Regular Price $215.00 USD
Availability 2 to 3 Weeks

Qty:

Sale Price $182.75 USD
Regular Price $215.00 USD
Availability 2 to 3 Weeks
Quantity

Testo 0554 4150 Replacement Filter NO Sensor-

Testo 0554 4150 Replacement Filter NO Sensor
Model: 0554 4150

Sale Price $278.80 USD
Regular Price $328.00 USD
Availability 3 to 4 Weeks

Qty:

Sale Price $278.80 USD
Regular Price $328.00 USD
Availability 3 to 4 Weeks
Quantity

Testo 0554 4100 Replacement Filter CO Sensor-

Testo 0554 4100 Replacement Filter CO Sensor
Model: 0554 4100

Sale Price $278.80 USD
Regular Price $328.00 USD
Availability 3 to 4 Weeks

Qty:

Sale Price $278.80 USD
Regular Price $328.00 USD
Availability 3 to 4 Weeks
Quantity

Testo 0554 3515 Replacement Gas Sensor for 513 and 515 Ex leak detectors, CH₄/C₃H₈/C₄H₁₀/H₂-

Testo 0554 3515 Replacement Gas Sensor for 513 and 515 Ex leak detectors, CH₄/C₃H₈/C₄H₁₀/H₂
Model: 0554 3515

Sale Price $127.50 USD
Regular Price $150.00 USD
Availability 2 to 3 Weeks

Qty:

Sale Price $127.50 USD
Regular Price $150.00 USD
Availability 2 to 3 Weeks
Quantity

Testo 0554 2400 Sensor, CO2-

Testo 0554 2400 Sensor, CO2
Model: 0554 2400

Sale Price $4838.20 USD
Regular Price $5692.00 USD
Availability 5 to 6 Weeks

Qty:

Sale Price $4838.20 USD
Regular Price $5692.00 USD
Availability 5 to 6 Weeks
Quantity

Testo 0554 2350 H2S Sensor, 0-300ppm, 0.1ppm resolution-

Testo 0554 2350 H2S Sensor, 0-300ppm, 0.1ppm resolution
Model: 0554 2350

Sale Price $2003.45 USD
Regular Price $2357.00 USD
Availability 2 to 3 Weeks

Qty:

Sale Price $2003.45 USD
Regular Price $2357.00 USD
Availability 2 to 3 Weeks
Quantity

Testo 0554 2300 Hydrocarbons Sensor-

Testo 0554 2300 Hydrocarbons Sensor
Model: 0554 2300

Sale Price $2003.45 USD
Regular Price $2357.00 USD
Availability 3 to 4 Weeks

Qty:

Sale Price $2003.45 USD
Regular Price $2357.00 USD
Availability 3 to 4 Weeks
Quantity

Testo 0554 2250 SO2 Module, 0-5,000 ppm -

Testo 0554 2250 SO2 Module, 0-5,000 ppm
Model: 0554 2250

Sale Price $1987.30 USD
Regular Price $2338.00 USD
Availability 2 to 3 Weeks

Qty:

Sale Price $1987.30 USD
Regular Price $2338.00 USD
Availability 2 to 3 Weeks
Quantity

Testo 0554 2200 NO2 Module, 0-500 ppm-

Testo 0554 2200 NO2 Module, 0-500 ppm
Model: 0554 2200

Sale Price $1987.30 USD
Regular Price $2338.00 USD
Availability 3 to 4 Weeks

Qty:

Sale Price $1987.30 USD
Regular Price $2338.00 USD
Availability 3 to 4 Weeks
Quantity

Testo 0554 2152 NO Module, Low Range, 0-300 ppm-

Testo 0554 2152 NO Module, Low Range, 0-300 ppm
Model: 0554 2152

Sale Price $1987.30 USD
Regular Price $2338.00 USD
Availability 3 to 4 Weeks

Qty:

Sale Price $1987.30 USD
Regular Price $2338.00 USD
Availability 3 to 4 Weeks
Quantity