# Accuracy for electrosurgical analyzer

A

#### akmal122g

Hello. I am trying to calibrate an analyzer but do not understand the accuracy of the equipment.

Technical specification

Main test load range: 50 ohm to 750 ohm
Accuracy (DC to 500 kHz): ?4% of selected value measured at calibration
to: ?1% (across the entire operating temperature
range)

Can someone help me with this?

Thank you.

#### Stijloor

Staff member
Super Moderator
A Quick Bump!

Can someone help?

Thank you very much!!

#### Hershal

##### Metrologist-Auditor
Staff member
Super Moderator
Hello. I am trying to calibrate an analyzer but do not understand the accuracy of the equipment.

Technical specification

Main test load range: 50 ohm to 750 ohm
Accuracy (DC to 500 kHz): ?4% of selected value measured at calibration
to: ?1% (across the entire operating temperature
range)
This appears to be DC and AC Voltage and Resistance. The statement above suggests it electrical output will be within the 4% of selected value regardless of what point in its operating range it happens to be at. But based on the above, appears that the total accuracy, including resistance and voltage cannot exceed 1%.

I would likely start with the voltage, DC, take several steps to 500kHz, then go back down for linearity. Two or three times to also assure the repeatability. Measure the resistance at DC across several values, but then you need to measurethe resistance in an AC manner also.

Then calculate your Type A and Type B uncertainties and your expanded uncertainties. Hopefully that will be much less than the stated accuracy levels.

Hope this helps.

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