Tecpel AC/DC Current clamp transmitter 60A CA-60

This is how the day started. Three guys 1 semi ??? It’s got to be the fuel pump (test,test,test,test) snap on tools , multi meters , volts are there and this guy says my clamp reads lower volts than your let’s give it a shot …. BOOM on the scope a super low profile waveform! Both the other guys ordered one before the lift pump was delivered. Low amps are hard to find this amp makes a pretty picture for you…..

Clamp-On probe works fine. With Amazon, you never know where the items you are purchasing are coming from. This probe came from Taiwan so there was a significant tax and customs charge, which I wasn't expecting, and of course, Amazon will never tell you that.

I bought it because most amp clamps only measure alternating current. This one measures both AC and DC without interrupting the circuit. I use it with a trusty old Fluke 27FM multimeter.

Overall I am happy with the device. However, it is somewhat difficult to get a correct measurement for low levels of direct current because the "Zero" settings does not hold for very long. You may need to Zero sensor and quickly read the current several times to and average the readings for best accuracy. I find that for low currents I can clamp the probe around the current carrying wire, Zero the sensor, quickly open the jaws to get get the wire out, then close the jaws and observe the reading. The resulting reading will show a current value (ignore the direction indicated ty + or +) that has a lower effect from the Zero drift. All DC clamp-on current sensors have the Zero drift problem; it might be a little less on more expensive devices.

The first one I bought was returned to Amazons 30-day window for a broken lead. The 2nd one quit working after 8 months. Beware: there is no manufacture's warranty on them. After contacting the company, they told me to just buy another one! I told them I've wasted enough $ with them, so I won't be doing that again.