FAQs

Open the Download Center, choose Product Catalog, and search for the model number printed on the rear label. The specification sheet is the first PDF in each product group.

Basic accuracy is the best-case figure measured on the most favourable range under reference conditions. Each range in the specification table lists its own accuracy, which is the figure to use in practice.

Measurement category and working voltage are printed next to the input terminals. Never connect the instrument to a circuit whose category rating exceeds the one marked on the housing.

Certification marks applicable to each model are printed on the rear label and repeated in the specification sheet. Certificates can be downloaded from the Download Center under Certificates.

A traceable calibration certificate can be requested at the time of purchase through your local distributor. Certificates issued after delivery require the instrument to be returned for calibration.

Yes. Search the Download Center for your model number and open the Certificates category; the declaration of conformity is published as a signed PDF.

Power the instrument off, wait ten seconds, and power it on again. If the freeze repeats, replace the batteries — a brown-out during range switching is the most common cause.

Slow refresh usually means a filtering or averaging mode is active. Check the mode indicator on the display and return to the default measurement mode to restore the normal refresh rate.

Hold the power button for ten seconds to force a shutdown. If the keypad is still unresponsive after restarting, submit a service request with the serial number and a description of the fault.

Switch the palette back to the default, then let the camera stabilise for two minutes after power-on. A cold sensor produces low contrast until it reaches its working temperature.