The TA234 probe is a 30 A current clamp. The extended measuring jaws allow measurement in a confined space. When measuring DC, a simple thumbwheel on the probe allows zero adjustment.
This current clamp is ideally suited for use with PicoScope oscilloscopes and features additional screening to reduce noise pickup.
|Nominal current||30 A AC peak or DC|
|Measuring range (s)||30 mA to 30 A DC (accurate)
5 mA to 30 A DC (usable)
|Overload capacity||500 A for 60 s|
|Output sensitivity||100 mV/A|
|Accuracy||±(2% of reading ± 2 mA)|
|Resolution||± 1 mA DC after filtering|
|di/dt tracking capability||> 20 A/µs|
|Conductor position sensitivity||± 1% relative to center|
|Temperature coefficient||0.1 x specified accuracy/°C
(0 °C to 18 °C, 28 °C to 50 °C)
|Frequency range||DC to 20 kHz (–0.5 dB)|
|Battery type||9 V PP3, MN 1604, 6F22, 6LR61|
|Min. load impedance||1 MΩ|
|Max. conductor size||19 mm diameter|
|Output cable and connectors||2 m long coax terminated with safety BNC connector|
|Operating temperature||+5 °C to +40 °C|
|Storage temperature (excluding battery)||–20°C to +70°C|
|Humidity||0 to 80 %RH|
|Altitude||0 to 2000 m|
|Dimensions (H x W x D)||200 mm x 72 mm x 38 mm|
|Environmental||RoHS and WEEE compliant|
With a 20 mm extended jaw the TA234 low amps current clamp is ideal for parasitic drain measurements without the need for battery cable disconnection. The clamp also boasts extreme accuracy from 5 mA through to 30 A DC with reduced noise levels so ensuring greater resolution for very low current applications, including:
Parasitic drain measurements
Petrol and diesel injector operation
Throttle motor functions
EGR actuator testing
Broadband 02 sensor testing (in conjunction with current multiplier)
Recently I was faced with a customer who had completely given up on the idea of her car ever being fixed. The lady owner of a 2001 Audi A6 1.8 Turbo, explained to me how she has always had problems with the battery discharging.
|Common rail diesel injector back-leakage testing|
|Parasitic drain test – battery|
|Ignition primary (current)|
|Fuel injector (current)|
|Motorcycle fuel pump (current)|
|Cooling fan current|
|Charging voltage and current|
|Dual trace - Primary ignition vs injector current|
|Multi-coil-on-plug unit - Primary voltage vs current vs secondary|
|Multi-coil-on-plug unit - Primary driver (dual) & current test|
|Coil-on-plug ignition - secondary vs primary voltage and current|
|Coil-on-Plug primary voltage and current (3-wire)|
|Coil-on-Plug primary voltage and current (2-wire)|
|DIS primary ignition voltage (dual driver) and current|
|DIS primary ignition voltage and current (using the 10:1 attenuator)|
|DIS primary ignition (current) (using a low-amp current clamp)|
|Primary ignition and current (using the 10:1 attenuator)|
|VAG PD piezo unit injector|
|PD (unit) injector (using a low-current clamp and two BNC leads)|
|Piezo injector current (using a low-current clamp)|
|Bosch CDi 3 injector current test|
|Bosch CRDi injector (using a low-current clamp)|
|Injectors - Single Point (Current) (using a low-current clamp)|
|Injector and injector current|
|Multi-point injectors - Using a low-current clamp|
|Single glow plug (using low-current clamp)|
|Lambda (oxygen) sensor heater|
|Title||Language||Issue||Size||Updated||All products||All languages||All documents||Status|
|30 A Current Clamp User’s Guide||English||2||133 KB||Jun 09 2015||Current clamps||English||open|
RATCHET+WRENCH recently published an article based on our WPS500X pressure transducer. Starring Matt Fanslow, of Riverside Automotive in Redwing, the article is a great read for anyone considering the purchase of our product. As Fanslow says. “There’s nothing on the market that comes close to it.”.
30 A (low amps) current clamp
I’ve been using this clamp for a few weeks now. Solid perfomance and good build quality. As with all the ‘hall effect’ current clamps, you need to let it warm up a little before relying on it’s low end current readings. I haven’t managed an overnight parasitic draw test yet with it, but I have noticed some drift when it’s only been switced on for maybe half an hour. That’s no different to any others, including my Fluke low amp clamp.
The jaw size is perfect for battery cables etc.. and it’s accuracy is superb, once zero’d.
I think the lowest stable reading is around 5 to 10mA. I’ve checked it against my Fluke ammeter and it’s pretty close.
Nice clamp, well worth the money.
30 A (low amps) current clamp
This current clamp is built as good as all clamps sold by
Pico. This is a better alternative to the low amp clamp due
to the increased jaw opening to allow for larger cables.
great for doing key off battery drain.