The DPM 3 is compatible with all YSI (Yellow Springs Instruments) 700-series temperature probes.

A small amount of drift is acceptable. This type of drift is usually caused by the unit displaying a value that falls in between two digits. Example: You apply 50.5 PSI to the DPM 3, and the reading bounces between 50 psi.and 51 psi. This would be considered normal. If the unit drifts from zero and the displayed readings drift more than one or two counts, the offset my simply need to be zero'ed out, or there may be a problem with the way the DPM 3 is being used, or with the unit itself.