TPI HVAC-R Autoranging Digital Clamp Meter 270Perfect for tight, narrow, spaces. The new TPI 270 with slim jaw and body is ideal for cramped work areas and crowded electrical panels.The slim design 270 is a hand-held, autoranging clamp-on DMM. Extra large numerals, min/max, capacitance, DC microamps and duty cycle are just a few of the features of the 270. An affordable choice, the 270 offers measurements in all basic electrical functions with additional advanced features like non-contact voltage.IncludesClamp MeterCarrying PouchTest Lead SetTemperature ProbeInstruction ManualBattery & FuseFeatures400 Amps ACMeasure motor in-rush current and run currentMeasure temperature differential using relative modeFrequency, Min/Max/Record, Data Hold and Peak HoldUp to 40,000 microfarads to test start and run capacitors4,000 count display with 41 segment analog bar graphCAT III 600V ratedcULus 610103-year limited warrantyApplicationsMeasure flame safety control currentTest run and start capacitors and motorsMeasure motor run current and capture peak motor start up amperageMeasure heat anticipator currentDetermine thermocouple voltageTest line and control voltagesMeasure heating element resistanceMeasure air temperature in ductsTest for the presence of voltage in circuits without contacting the circuitMeasure temperature differential using relative modePerform the following tests and/or measurements with the 270 and the appropriate function:HVAC/R DCmV • Thermocouples in furnaces. ACA • Heat anticipator current in thermostats. ACV • Line voltage. ACV or DCV • Control circuit voltage. OHMS • Compressor winding resistance. OHMS • Continuity of wiring. CAP • Motor start and run capacitors. ACA • Motor and compressor start up current. Hz • Frequency on controls and line voltage. TEMP • Air duct temperaturesALL • Bar graph to indicate rapid fluctuationsELECTRICAL ACV • Measure line voltage. ACA • Measure line current. OHMS • Continuity of circuit breakers. DCV • Voltage of direct drive DC motors.ACA • Start up current of motors, relays, contactors and transformers.ELECTRONIC ACV • Measure power supply voltage. ACA • Measure power supply current.OHMS • Continuity of circuit breakers and fuses.Frequently Asked Questions1. How does the non-contact voltage feature of the TPI 270 and 275 benefit me? The non-contact feature of the TPI 270 and 275 allows you to detect live circuits without using the test leads, which enables faster checks for the presence of voltage.2. Which of the TPI clamp-on meters will measure temperature? The 270 and 275 have this feature built in and the 255, 265, and 291 can measure temperature by using the optional A301 or a A312 K-type thermocouple adapters.3. Which TPI clamp-ons can measure DC microamps? The TPI 270 and 275 has the capability to measure DC microamps by using the test leads. This is very useful for making flame safety control current measurements. The 265 can measure DC microamps with the optional A213 adapter.4. Does a clamp-on meter measure anything besides amps? All TPI clamp-on meters measure AC/DC volts and resistance. Models are available with temperature, frequency, capacitance, and non-contact voltage detection capability as well as many other features. Various adapters including temperature (A301 or A312), carbon monoxide (A771), and pressure (A620/630) are available. Contact TPI for additional information.5. Is it possible to measure AC amps on a device that uses a power cord?Yes, to accomplish this you can use the TPI line splitter (A202). AC amps must be measured by isolating a single wire and the A202 line splitter does this without damaging the power cord.