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270 Clamp-On Meter

Perfect for tight, narrow, spaces. The 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.

  • Measure flame safety control current
  • Test run and start capacitors and motors
  • Measure motor run current and capture peak motor start up amperage
  • Measure heat anticipator current
  • Determine thermocouple voltage
  • Test line and control voltages
  • Measure heating element resistance
  • Measure air temperature in  ducts
  • Test for the presence of voltage in circuits without contacting the circuit
  • Measure temperature differential using relative mode

Product Documentationpdf-icon1

Click below to view or download product documentation PDFs:

270 Product Sheet

270 Manual

£90.00 RRP exc. VAT

Where to Buy TPI Products

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.

  • 400 Amps AC
  • Measure motor in-rush current and run current
  • Measure temperature differential using relative mode
  • Frequency, Min/Max/Record, Data Hold and Peak Hold
  • Up to 40,000 microfarads to test start and run capacitors
  • 4,000 count display with 41 segment analog bar graph
  • CAT III 600V rated; cULus 61010
  • 3-year limited warranty

The 270 comes complete with the following accessories:

  • Carrying Pouch
  • Test Lead Set
  • Temperature Probe
  • Instruction Manual
  • Battery & Fuse

Standard Accessories

  • GK11M Standard K-Kype Thermocouple Probe
  • A085 UL Listed Silicone Test Lead Set with
    Alligator Clips (clip-on)
  • A270 Soft Carrying Pouch

Optional Accessories

  • A202 Line Splitter
  • A771 Carbon Monoxide Adapter
  • A620 Pressure Adapter
  • TLS2000RB Deluxe Test Lead Kit

 Model 270 Specifications
 Basic DC Accuracy:  0.5%
   
 DC Voltage (maximum):  600V
 Resolution (maximum):  0.1mV
   
 AC Voltage (maximum):  600V
 600V Resolution (maximum):  0.1mV
   
 DC Amps (maximum):  400μA
 Resolution (maximum):  0.01μA
   
 AC Amps (maximum):  400A
 Resolution (maximum):  0.01A
   
 Resistance (maximum):  40MΩ
 Resolution (maximum):  0.1Ω
   
 Frequency (maximum):  400MHz
 Resolution (maximum):  0.001KHz
   
 Capacitance (maximum):  4,000μF
 Resolution (maximum):  0.001nF
   
 Temperature (maximum)  1,000°F
 Resolution (maximum):  0.1°
   
 Diode:  Test Current Max 1.5mA
   
 Continuity:  Buzzer sounds at approx. 35Ω Response time; 50ms
   
 Agency Approval:  CEIEC 1010: CATIII; 600V cULus 61010
   
 Overall Dimensions: 10” x 1.3” x 2.5” (255 x 32.5 x 65mm)
   
 Weight: .8 lbs (363g)

TPI Model 270 Demonstration Video

Model 270 Applications


  • Measure flame safety control current
  • Test run and start capacitors and motors
  • Measure motor run current and capture peak motor start up amperage
  • Measure heat anticipator current
  • Determine thermocouple voltage
  • Test line and control voltages
  • Measure heating element resistance
  • Measure air temperature in  ducts
  • Test for the presence of voltage in circuits without contacting the circuit
  • Measure temperature differential using relative mode

Perform 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.

ELECTRICAL
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 Questions


1. 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.

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