Test Products International (TPI)
Product Categories

Selector Guide
Find the right tool for the job with TPI's visual selector guide. From DMMs and current clamps to probes and environmental test tools, the TPI visual selector guide is an easy way to find the right tool for the job.
Product Training Modules
About Test Products International (TPI)
The TPI product line includes Digital Multitesters, Digital Clamp-on Testers, Thermometers, Oscilloscope Probes, Connector Kits, Test Lead Sets and Accessories, Gas Analysis Instruments, Hand Held Oscilloscopes and BNC Cables. Collateral materials and repair centers at every location.
Additional Content
TECHNICAL NOTES
- 1010A Ambient Air Reset
- 306C and 306XC Field Calibration
- 310C Field Calibration
- 312C Field Calibration
- 314C Field Calibration
- 315C Field Calibration
- 316C Field Calibration
- 320C Field Calibration
- 341K Field Calibration
- 343 Field Calibration
- 367D Field Calibration
- 555 / 565 / 575 / 595 RS232 Communication
- 605 Vacuum Gauge
- 775 Sensor Locations and Function
- A251 Clamp Adapter
- A256/A296 Clamp Adapters
- Analyzers and Testing Water Heaters and Appliances
- Analyzers: CO Error at Start-up
- Analyzers: CO Sensor NO/NOx Filtering
- Auto Range Meter DC Volt Range Zero
- Carbon Monoxide Levels
- Coal-Fired Stove Draft Measurement Location
- Combustible Gas Leak Detectors List of Detectable Gases
- Combustion Analyzer Formulas
- Combustion Analyzer Sensor Care
- Digital Multimeter
- DMM Low-Resistance Measurements
- Infrared Thermometers and Emissivity
- IP Ratings
- Measuring Capacitance
- Measuring Capacitance with the TPI 270
- Measuring Voltage and Amperage
- Refrigerant Leak Detector Sensor Protection
- Test Instrument Fuses
- Using TPI Differential Manometers