User manual
PONSEL
Ref.: NOTICE_ACTEON_2020_v003
V : 003
52/57
13 Sensors
13.1 REDOX (ORP) sensor
13.1.1 Specifications:
Length of glass section: 65mm
Working range:
0 +/-2,000mV
Stability:
< 3mV shift in 24 hours
Temperature of use: -5 to 50°C
Pressure: Max. 5 bars
Cable: anti-static coaxial cable, max. length 10m
Response time:
< 20 seconds (for 95% of the response)
Minimum measurement volume: 0.5ml
Reference solution: 4M KCL polysaccharide gel
13.1.2 Description
Eh sensor (platinum ring) :
The 4M KCL polysaccharide gel that the Ag/AgCl bar is steeped in, communicates electrically with the "Redox"
medium through reverse junction burn-in.
The ring shaped electrode is suitable for continuous measuring: The KCL permeates outwards through this
reverse junction burn-in: The high osmotic pressure generated, increases the protection against contamination:
The sensor can operate for up to 4 years.
Figure 10 - Redox sensor diagram
∅
20.50mm
∅
12mm
Platinum ring
O-Ring seal
70mm
84mm