Specifications
Instruction Manual    Alpha DO 500 
1 
1. Introduction 
1.1  Before You Begin 
We thank you for purchasing the Alpha DO 500 Transmitter. 
The construction of the Alpha DO 500 Transmitter 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 work is started with the Alpha DO 500 Transmitter. 
The instruction manual must always be stored close at hand, in a place 
accessible to all people working with the Alpha DO 500 Transmitter. 
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 DO 500 Transmitters are intended solely for dissolved oxygen (DO) 
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 Alpha DO 500 Transmitter 
(housings, sensors, etc.). 
–  Comply with local environmental and operational conditions. 










