The Stratos Multi is the most versatile and flexible analytical transmitter on the market for pH, ORP, conductivity, resistivity, concentration & oxygen.    

The Portavo 904 X is a multi-purpose handheld meter and calibration tool for pH, ORP, conductivity, or oxygen sensors in Ex rated areas.

• cFMus Class 1, Division 1 Groups ABCD ATEX Zone 0/1
• Automatic calibration up to 3 points