EBME Forums Forums Maintenance Technical Assistance Fluke ESA601 Safety Analyzer

Good morning,

I am looking for a schematic or need to know the values of the following components:
L1 and L2 on the board with sockets for measuring the resistance of the protective conductor and resistor R54 (1001 or 1011). Can anyone help me?

Best regards,
Daniel

It would be best to take a clear photo of the actual location of the resistor; otherwise, it will be difficult for others to accurately locate the R54 resistor you mentioned.

Based solely on the blurry eBay ebay connectionconnection diagram, is this the resistor in this location?

By the way, you'll almost never find circuit diagrams or schematics for Fluke analyzers. Even if you find a service manual, it won't contain any circuit diagrams or schematics, only some irrelevant technical parameters.
This is my personal opinion on the current mainstream Fluke bioanalysts (some analyzers produced in recent times).

No, you are pointing to R45. I am asking about resistor R54 on the display board. The inductance is located on the measuring board with black/green/red sockets. The analyzer has a problem with calibrating “0” Earth Res. The L1 and L2 measurements are unstable.

Judging from its appearance alone, it appears to be a high-precision resistor (at least one-thousandth of a percent accuracy) (light blue).

Can't you tell the burn marks under a magnifying glass?

Well, you can see that

Could it be '1001'? That's a 1K ohm resistor


Another method is to draw the upper and lower accessory circuits of this resistor as much as possible, and try to explore possible resistance values based on the circuit principle (it seems to me that it is connected to a diode at one end?)

It can also be 1011, 1021, 1031, etc.
Draw an electrical circuit from a multilayer board?

You can try installing a standard "1001" resistor and observe if there's any improvement in the calibration of the "0" ground resistance. If there is, the resistance value is 1K ohms; if not, continue replacing it with a 1011... and so on.


After determining the resistance value, purchase a resistor with the same precision as the original and install it permanently.

Judging from the picture alone, this resistor appears to be for current limiting purposes.


Or you can shoot a test video and post it on YouTube, and post the link here, so that we can see the detailed situation on site and make judgments accordingly

R54 does not appear to be the cause of the “0” problems. The coils at the sockets have unstable values, and this is where I would see the “0” problem. I do not know what R54 is for or in which circuit it is located. The fact is that it is damaged.

My suggestion is to first install a "1001" resistor at position R54.

Then check the coil resistance at the socket and stabilize it.

Are you referring to the resistance value between the center potential and GND when you say "0" fault?

You didn't film the malfunction process, so other people can't understand the malfunction you described.