3-Point Calibration - Multipoint calibration of Dataloggers

[bongi]

I am wanting to purchase a number (>10) high temperature dataloggers. Each brand that I've looked at has interfacing software that allows a 1-point "field calibration". We have a metrology lab in-house which we would prefer to use since the factory 3-point cals are up to $300 each. The calibration is often the same price if not higher than the cost of the unit itself. An example of the issue is the Dickson HT100. The unit sells for $310.00 and the 3-point calibration is $156 (NIST traceable) or $269 (A2LA ...). Is anyone aware of a system that allows multipoint calibration of a datalogger?

[Coury Ferguson]

Can anyone help?

[BradM]

Originally Posted by bongi

I am wanting to purchase a number (>10) high temperature dataloggers. Each brand that I've looked at has interfacing software that allows a 1-point "field calibration". We have a metrology lab in-house which we would prefer to use since the factory 3-point cals are up to $300 each. The calibration is often the same price if not higher than the cost of the unit itself. An example of the issue is the Dickson HT100. The unit sells for $310.00 and the 3-point calibration is $156 (NIST traceable) or $269 (A2LA ...). Is anyone aware of a system that allows multipoint calibration of a datalogger?

Hello there! Welcome to the Cove!

There are many ways to calibrate a datalogger. How many points are you going to actually use and what kind of input?

Maybe if you have the appropriate standards, you can verify the accuracy of it, and send it back only when it needs adjustment. Many of the dataloggers have provisions that you can make adjustments yourself. NOTE: Assure you have adequate standards of sufficient accuracy to do this. I've messed up a lot of equipment in the past using improper standards.

And yes... a good calibration costs money! But no standard is worth what you paid, if you don't have confidence in it.