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1.
Specification
The Model OR8EFG KCl filling type ORP Sensor permits stable ORP measurement even for
solutions having comparatively severe properties.
This sensor can be mounted on either an PH8HF flow-through holder or an PH8HS submersion
holder, or its can be used alone suspended in the solution (a maximum depth of 3 meters).
1.1
Standard Specifications
Measurement:
Measurement principle: Metallic electrode method
Measuring range:
Installation:
Note: I f any of the following solutions are measured, install the sensor either in a flow-through or submersion holder.
• When the solution temperature exceeds 80°C.
• When the pH of the solution is 2 or less or 12 or greater.
• When a strong acid solution is to be measured
(e.g., aqua regia, chromic acid, hypochlorous acid or perchloric acid, etc.).
• When the solution contains corrosive gases
(e.g., ammonia, chlorine, hydrogen sulfide, etc).
• When the solution contains a small percentage of organic solvent or oil.
Solution temperature: -5 to 105°C
Table 1. Process Temperature Range
Holder Type
Guide-pipe (PH8HG)
Submersion (PH8HS)
Flow-through
(PH8HF) (
*1)
Suspension (HH350G)
Float (PB350G, PB360G)
Note: PVC: Rigid Polyvinyl, PP: Polypropylene, SS: Stainless Steel.
*1:
For flow-through types, refer also to the solution temperature and pressure graph
(in notes following Model and Suffix code table for flow-through type holders).
*2:
Solutions with normal pH ranges of 3 to 14 are recommended for stainless steel (316 SS).
Oxidation-reduction potential of a solution
-1500 to 1500 mV
Mounting in PH8HS submersion holder
Mounting in PH8HG guide-pipe holder
Mounting in PH8HF flow-through holder
when mounted in PH8HG guide-pipe holder: -5 to 80°C
when mounted in PH8HS, PH8HF holder, see Table 1.
Holder
Material
PVC
PP
PP
SS (
*2)
PP
SS (
*2)
SS (*2)
None, Provided
PP, SS (*2)
< 1. Specification >
Solution
Cleaner
pH Range
None
2 to 12
None
Provided
None
Provided
None
0 to 14
Provided
None
Provided
None
Solution Temperature
(°C)
-5 to 50
-5 to 80
-5 to 100
-5 to 80
-5 to 100
-5 to 80
-5 to 80
-5 to 80
-5 to 105
-5 to 80
-5 to 80
-5 to 50
IM 12C07J01-01E
8th Edition : Apr. 27, 2020-00
1-1
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