There seems to be a difference between older palm style gauges when compared to the newer ones. Has there been a change and are the gauge connectors cross compatible?

Palm gauges are often subjected to some of the harshest treatment as they are designed to be transported and may be used outdoors or in rough environments. In order to increase the durability of these gauges, we have redesigned the connector with a larger barb and have altered the connector port on the palm gauge to accommodate this new connector. The larger connector ensures a firm connection, reduces the likelihood of the gauge being damaged if it is dropped or subjected to shock/vibration, and is a unique shape that is not cross-compatible with other medical equipment. The newer connector is NOT compatible with older palm series gauges.
All palm style gauges manufactured and shipped after November 2015 will have the updated, more robust connector. We have updated the part numbers for these connectors as well as the markings on the gauge itself to allow for easy identification. For the part numbers for both the older and newer style connectors and gauges contact our Customer Service department at 1-800-ADC-2670.