5 ppm for sale, brand-new and used.

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Brand new monitor made by Carlo Gavazzi. 3 phase monitoring makes it easy to troubleshoot which phase is the culprit.

Up for Auction and your consideration is the Vernier O2 Gas Sensor O2-BTA (NOS).The item is new in the box (NOS) and comes with each original piece offered for sale from original manufacturers website, where it retails at $249 plus Shipping. Includes everything that you see in the photos i

This is one of the few devices which National Bureau of Standards (NBS) will accept for calibration as voltage standard. NBS refuses to accept any DMM as a standard due to excessive long term drift. The drift of Guildline standard cell enclosure ( It is 4 or 12 cells depending on model of saturated Weston cells keep under constant temperature of 30 degrees +-.005 degrees) is measured in 1or 2 ppm per DECADE.

? Designation : RF and Universal Frequency Counters ? Model : 53132A?

? Designation : RF and Universal Frequency Counters ? Model : 53131A?

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Portable FORMALDEHYDE (HCHO) 5ppm DATALOGGER Monitor Online 64K Logging Memory

The testo 310 residential combustion analyzer represents a new class of instruments for Testo and provides exceptional value and expanded capabilities in combustion testing. The 310 sets a new standard in reliable combustion tuning with its rugged housing, simple design and advanced sensor technology. The easy-to-read backlit display shows more measurements which provides a more complete picture of the combustion process.

gainexpress   This Carbon Dioxide (CO2) Monit

gainexpress This Carbon Dioxide (CO2) Monitor is used to measure CO2 Concentration, Air Temperature and Relative Humidity with visible alarm. It is an ideal for Indoor Air quality ( IAQ ) diagnosis.It can calculate dew point and wet bulb temperature in second. It can also had

PORTATIF CARBONE Dioxode (CO2) Thermo-hygrometre Logging Metre Taiwan a fait

I am a retired HVAC tech and I am selling off many of my tools and instruments I used in the trade. This CO detector is in perfect operating order. It comes in a leather case and can be operated without taking it out of the holster, which does protect it, if it is dropped.

Features: Measures: Flue temperature, oxygen, carbon monoxide (CO) Calculates: Carbon dioxide, gross/net efficiency, excess air, CO air free Unique DMM style rotary selector Protective boot w/integral magnet Real time clock

Product Description UEi Test Instruments has over 45 years experience designing and manufacturing a broad range of award-winning, industry-leading Test and Measurement Tools. UEi Test Instruments are sold throughout North America and Canada and professionals recognize the UEi brand for quality and innovative features designed to solve real-world problems. UEi's NIST-certification laboratory is compliant with ISO17025.