Does a clamp-on meter measure anything besides amps? All TPI clamp-on meters read AC/DC volts and resistance, as well as AC amps. The 296 also reads DC amps. The 290 reads AC/DC volts, resistance, AC amps, temperature, capacitance and frequency.
What do I need to do to measure AC amps in a power cord? You need to isolate a single wire to be able to measure AC amps. You can do this with a line splitter (A202).
Can I measure anything besides AC amps with the jaws of my clamp-on meter? The 290, 293, and 296 also measure frequency with the jaws. All other functions require the use of test leads.
Why do you put a 40-amp range on your clamp-on meters? A 40-amp range gives you a resolution of 0.01 amps, which is ideal for measuring heat anticipators and small motors and gives you the best accuracy when reading less than 1 amp ( based upon the accuracy specification). Other meters with 0.1 resolution have a much wider accuracy specification and can give incorrect readings on low current measuring. TPI has a wide range of optional accessories that will enable the user to measure amps, temperature, pressure or CO.
No troubleshooter should be without a TPI Clamp-On
|
 |
| Features |
255 |
290 |
291 |
293 |
296 |
| Display Count |
4000
|
4000
|
4000
|
4000
|
4000
|
| AC Volts |
600
|
600
|
600
|
600
|
600
|
|
DC Volts
|
600
|
600
|
400
|
600
|
600
|
| Basic DC Accuracy |
0.3%
|
0.75%
|
0.75%
|
0.75%
|
0.75%
|
| AC Amps |
400
|
700
|
700
|
700
|
700
|
|
DC Amps
|
NA
|
20uA
|
NA
|
NA
|
700
|
| HDR Mode |
NA
|
NA
|
NA
|
NA
|
Yes
|
| True RMS |
NA
|
NA
|
NA
|
Yes
|
Yes
|
| Resistance |
40M&Mac189;
|
40M&Mac189;
|
4K&Mac189;
|
40K&Mac189;
|
40K&Mac189;
|
| Capacitance |
NA
|
20,000uF
|
NA
|
NA
|
NA
|
| Frequency |
NA
|
10KHz
|
NA
|
10KHz
|
10KHz
|
| Temperature |
NA
|
Yes
|
NA
|
NA
|
NA
|
| Analog Bar Graph |
NA
|
NA
|
NA
|
Yes
|
Yes
|
| Auto Range |
Yes
|
Yes
|
NA
|
Yes
|
Yes
|
| Data Hold |
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
| Min/Max/Peak |
Yes
|
Yes
|
PEAK ONLY
|
PEAK ONLY
|
Yes
|
| Trim |
NA
|
Yes
|
NA
|
Yes
|
Yes
|
| Sleep Mode |
NA
|
NA
|
NA
|
Yes
|
Yes
|
| Auto Power Off |
Yes
|
Yes
|
NA
|
NA
|
NA
|
| Dimensions (w/boot) |
7.5x3x1.5
|
9x3.25x1.75
|
9x3.25x1.75
|
9x3.25x1.75
|
9x3.25x1.75
|
| CE or UL Listed |
CE, cULus 3111
|
CE, cULus 3111
|
CE
|
CE, cULus 3111
|
CE, cULus 3111
|
