R
1st specHello,
I need to replace an in-circuit current sensor with a non-invasive one.
I came to this LEM product (HTFS 200-P) but I have doubts regarding the actual reading error.
In the datasheet, there is a mention about accuracy at Ipn (1% of Ipn, where Ipn is the rated nominal current - 200A in this case). That is, the accuracy is 2A when reading 200A.
But what is the reading error for a smaller current? What will be the error when measuring a current of 10A?
On a different product datasheet (Honeywell CSNF6661), the accuracy is relative (0.5%). That means the reading error is 1A when measuring 200A and 5mA when measuring 1A?
Thanks in advance for any clue.
I've seen all those temperature/linearity/magnetic coeficients but it's still unclear if that 1% it's an absolute or relative error.
HTFS sensors have also considerable noise which matters in wide band applications.
I would explain it slightly different. A linear characteristic can be represented by a straight line, linearity error is deviation of the actual characteristic from this line, either a curvature or discontinuities, e.g. steps.Linearity refers to gain errors.
+/- 25 mV is not drift, it's initial (not calibrated) offset error.
That's the nature of an offset quantity.So do I need to measure this offset error at zero primary current then I could substract it from any further measurements? It has a constant value for the entire measurement range?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?