Check the specification in the table and select the most appropriate product for your application. For more information click on the photo.
Type	pH 03 N/K/Dual	pH 03 N/Ring	pH Reiner	pH 40/pH 40 Ring	pH 18	pH/ORP	rH	LF/LF Ring
pH	hex	hex	hex	hex	hex	hex
Absolute measurement principle	hex	hex	hex			hex
Relative measurement principle				hex	hex
Redox						hex	hex
Conductivity								hex
CIP/SIP-compliant	hex	hex	hex	hex	hex	hex	hex	hex
Dry storage possible	hex	hex	hex	hex	hex	hex
Electrolyte vessel required	hex	hex	hex			hex
Prevents the pipeline’s cross-section from narrowing		hex		hex (Ring)				hex (Ring)
Diaphragm	Ceramic (annular flow)	Ceramic (annular flow)	Ceramic (annular flow)	without	without	Ceramic (annular flow)	without	without
Measuring range	Linear 0 to +10 pH * Application -2 to +14 pH **	Linear 0 to +10 pH * Application -2 to +14 pH **	Linear 0 to +10 pH * Application -2 to +14 pH **	3 to 12 pH	3 to 12 pH	-1,200 to +1,500 mV 0 to 10 pH	-1,200 to +1,500 mV	0.01 to 2,000 mS/cm
Operating temperature	0 to +140°C ***	0 to +140°C ***	0 to +140°C ***	0 to +140°C ***	0 to +140°C ***	0 to +140°C ***	0 to +140°C ***	-25 to +200°C
Operating pressure	-1 to +9 bar ***	-1 to +9 bar ***	-1 to +6 bar ***	-1 to +40 bar ***	-1 to+15 bar ***	-1 to +9 bar ***	-1 to +40 bar ***	-1 to +40 bar ***
Ex. protection	II 1/2 G EEx ia IIB T6 or II 2G EEx ia IIC T6	II 1/2 G EEx ia IIB T6 or II 2G EEx ia IIC T6	without	II 1/2 G EEx ia IIB T6 or II 2G EEx ia IIC T6	without	II 1/2 G EEx ia IIB T6 or II 2G EEx ia IIC T6	II 1/2 G EEx ia IIB T6 or II 2G EEx ia IIC T6	II 1/2 G EEx ia IIB T6 or II 2G EEx ia IIC T6

* Depends on temperature
** Depends on alkali error
*** Higher pressure/temperature on request