Current Probe Comparison at AESwave.com, lab scopes, scan tools, accessories and training for automotive diagnostic equipment!

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Fluke 80i-110s	vs.	Generic Low Current Probe

AES currently sells two kinds of low current probes. We compared the two using the same signal and the same scope and here are the results.
Peak and Hold Fuel Injector Current from a 1991 Chevrolet S-10, 4.3L using the LS-2000
Fluke Probe		Generic Low current Probe
As you can see, both probes measured fuel injector current almost exactly the same.
Ignition Coil Current from a 1991 Chevrolet S-10, 4.3L using the Snap-on Vantage PGM using the waveform viewer mode
Fluke Probe		Generic Low Current Probe
Once again, they both performed well.
Fuel Pump Current from a 1991 Chevrolet S-10, 4.3L using the OTC Vision
Fluke Probe		Generic Low Current Probe
Both probes did a good job measuring current from this fuel pump.
Port Fuel Injector Current from a 1997 Pontiac Grand Prix, 3.8L using the Fluke 98
Fluke Probe		Generic Low Current Probe
This particular injector didn't have a very pronounced "pintle hump" to begin with but the OTC probe did a better job of capturing it. This wasn't a scientific study so more testing would be in order to verify these results.

Characteristics of the two Current Probes

Fluke Probe

Generic Low Current Probe

Overall Length

7-3/4"

Nose Size

1"H x 1"W x 4"L

1H x 1/2"W x 2-1/4"L

Side View of Nose

Top View of Nose

Click on the images to enlarge them.
The Fluke probe is the dark one on the left.

Maximum
Conductor Size

11.8 mm or about 7/16"

9 mm or about 3/8"

Zeroing

Wheel

Button

Connector

BNC
Requires BNC to B-plug Adapter (AES# 08-86-f) to connect to Vantage PGM, LS-2000, ADL 7100

Banana Plugs
Requires B-plug to BNC Adapter (AES# 08-88-M) to connect to Fluke scopes and Interro.

Power

9v DC Battery

Warranty

1 Year

AES: 1 year

Summary

Our comparison of these two current probes was not a scientific study. It was a simple, real world comparison to see how each performed measuring the same signal, using the same meter. They both did a good job with each of the four signals measured, as did each of the four meters used. There may be some performance differences that further, more in depth testing might have revealed but for these common automotive signals, there was little or no difference.

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Fluke Low Current Probe
AES# F-80i-110s

Generic Low Current Probe
AES# 07-60

Written by Chuck Walker

Chuck is an applications specialist here at AES. He is an ASE certified Master Automobile Technician and holds a California Smog Check Technician license. He has extensive field experience solving tough driveability problems and diagnosing & repairing automotive electrical, electronic and computer systems.

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Information in this document is subject to change without notice.
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