$100 - $150, Test and Measurement, Test Products International

A771 Carbon Monoxide Adapter for DMMs and Clamp-on Meters by Test Products International

The A771 is a CO adapter designed to work with your DMM to measure ambient air CO. Can also be used as a personal COalarm.

National Ambient Air Quality Primary Standards in the US call for less then 9 ppm carbon monoxide for an 8 hour average during any 12 month period.

Concentrations of 1 to 2 ppm may be found in homes with a normally operating gas furnace to well over 1,000 ppm in homes with a faulty furnace.

Just 200 ppm CO over 2 to 3 hours can cause slight headache, fatigue, dizziness, and nausea.

Carbon Monoxide testing is a crucial service provided by HVAC/R technicians.

The A771 is an advanced state-of-the-art Carbon Monoxide monitor that may be used to measure levels of carbon monoxide (CO) in the parts per million (ppm) range when used with a digital multimeter (DMM).

Features

• No Bulk! Easily carry one on your belt or tool box
• Easy to use with any DMM or Clamp-on Meter with a minimum 3 1/2 digit LCD, 2 or 4 Volt DC range and 10M or greater input impedance
• Detects CO levels from 0-1999 ppm, with resolution as low as 0.1ppm and ± 5% of reading accuracy
• Low battery and power indication
• Use with any DMM with minimum 2 1/2 digit LCD, 2 or 4Volt DC range and 10M Ohm or greater input impedance
• Calibrate in the field
• Complete with Belt pouch, A771P
• Built-in alarm is preset to 30ppm. Setting can be set by user
• 3 Year Limited Warranty

Applications

• Conduct Tests of CO Levels In Room Air To Meet ASHRAE and OSHA Standards
• Confirm Proper Operation of Alarming CO Detectors in Households
• Check For Proper Installation of Ventless Gas Fireplaces, Furnaces, and Other Combustion Devices.
• Use The A771 as a Personal Alarm Preset at 30 CO

SPD480 Phase Rotation Indicator by Test Products International

The TPI Model SPD480 Phase Rotation Indicator operates properly on variable frequency drives. Does not give false readings by pulsed waveforms.

Features

• Easy to operate - connect one lead to each phase
• Large alligator clips for easy connection to cables and bus bars
• Operates properly on variable frequency drives. Does not give false readings by pulsed waveforms
• Verify proper rotation on feeder extensions
• Determine phase rotation on secondary potential transformers

Reliable K-type thermocouple, low battery indicator, and easy on-site thermometer calibration checking. Accuracy at 23°C is ±0.5°C or ± .9%°F.