Most flow measurements are not regularly subject to maintenance after installation and commissioning. System with averaging pitot tubes, orifice plates and other DP flow elements utilize DP flow transmitters. These electronic devices are subject to changes in ambient temperature, operating pressure and long term drift. All factors can lead to considerable measurement errors particularly at smaller measured differential pressure values. These errors are typically only noticed during phases of plant shutdowns or at worst remain completely undected. In almost all cases the problem could be solved with a demand-oriented zero calibration of the DP transmitter.

This is exactly where the patented SKI AccuFlo®Zero comes into play. It performs this important maintenance work – the zero point calibration – automatically whenever it is necessary. It is an ideal accessory for all differential pressure pressure based flow measurements.

Since the AccuFlo®Zero basically eliminates the residual zero point error of DP transmitter it increases total measurement range through a large increase in total accuracy at lower rates.

The AccuFlo®Zero is also easy to retrofit in existing installations and works with almost all makes of DP transmitters.