Model 21 – General purpose ¾” NPT pH sensor with long insertion length:
Pressure; 0~100 psi.
Cable length; 3.3 metres.
Ref. cell; Double junction, KNO3 and KCl/AgCl.
High resistance to electrode poisoning solutions, typically those with cyanide, ammonia, sulphide and heavy metals in appreciable concentrations.
Applications; A combination pH sensor for insertion in tanks and large diameter pipes using process and waste water.