Instruction manual
- 1 - 
1 INTRODUCTION 
1.1 Before You Begin 
Thank you for purchasing the Alpha pH 550 Monitor. 
The construction of the Alpha pH 550 Monitor employs leading edge technology 
and complies with safety regulations currently in force. Notwithstanding this, 
improper use could lead to hazards for the user or a third-party, and/or adverse 
effects on the plant or other equipment. Therefore, the operating instructions must 
be read and understood by the persons involved before working with the pH 
Monitor. 
The instruction manual must always be stored close at hand, in a place accessible 
to all people working with the pH Monitor. 
If you have questions, which are not or insufficiently answered in this instruction 
manual, please contact your authorized supplier. They will be glad to assist you. 
1.2 Intended Use 
Alpha pH 550 Monitors are intended solely for pH or ORP and temperature 
measurement, as described in this instruction manual. 
Any other use, or use not mentioned here, that is incompatible with the technical 
specifications is deemed inappropriate. The operator is solely responsible for any 
damage arising from such use. 
Other prerequisites for appropriate use include: 
–  Comply with the instructions, notes and requirements set out in this instruction 
manual. 
–  Comply with all local safety regulations concerning safety at work. 
–  Comply with all information and warnings in the documentation dealing with the 
products used together with the pH Monitor (housing, sensors, etc.). 
–  Comply with the local environmental and operational conditions. 










