C-PVC Body Flat Surface Electrode – FLS pH/ORP 600
This is the rugged version of the traditional flat electrodes with an improved self-cleaning effect. Installation and maintenance are easy due to the quick disconnect BNC connectors. Built into the electrode’s body is a sealed, gel-filled double junction reference design. This design provides an extra barrier against reference side contamination and allows the electrodes to be used in severe applications prolonging electrode life.
The pH-responsive flat glass surface is placed in the center of the measuring surface and surrounded by the flat porous plastic reference junction providing an excellent sample contact. Version with amplified signal for long distance connection and metal pin to ground liquid.
A wide range of installation accessories allows in line, submersion or hot tap installation.
C-PVC Body Flat Surface Electrode – FLS pH/ORP 600
Key Features Of C-PVC Body Flat Surface Electrode – FLS pH/ORP 600
- pH and ORP versions
- Flat electrodes
- Double junction technology
- Large gel reference volume
- High protection from process contamination
- Easy and quick installation system
- BNC connector
- In line, submersion or hot tap installation
- Low cost fittings
- HF option (pH) for liquids with HF (max. 2%) inside
- LC option (pH) on request for pure water (<100 µS/cm)
- DA option for presence of stray currents or for long distance due to signal amplification

Technical Details of C-PVC Body Flat Surface Electrode – FLS pH/ORP 600
Specification | Details |
---|---|
Operating Range – pH | 0 – 14 pH (0 – 12.3 pH without Na⁺ error) |
Operating Range – ORP | ± 2000 mV |
Pipe Size Range | DN15 to DN100 (0.5” to 4”) |
Zero Voltage Point (new electrode) | 7.00pH ± 0.2pH |
Efficiency (new electrode) | > 97% @ 25°C (77°F) |
Response Time (new electrode) | pH: < 6 sec for 95% of signal change ORP: Application dependent |
Type | Sealed double junction |
Electrolyte | Solidified Gel 3.5M KCl (0.1M KCl for LC) |
Secondary Junction | Nylon filament |
Wire | Ag/AgCl |
In-line Installation | Threaded nipple ½”, ¾” |
Installation Fittings | FLS installation fittings Submersible installation Hot-tap installation |
Max Working Pressure/Temperature | 6.7 bar @ 75°C (100 psi @ 170°F) |
Body | C-PVC (PVDF on request) |
Reference Junction | Porous HDPE |
Sensing Surface | Glass membrane (pH), Platinum sealed in glass (ORP) |
O-Ring | FPM (Viton) |
Quality Standards | Manufactured under ISO 9001 |
Environmental Standards | Manufactured under ISO 14001 |
Certifications | CE, EAC |

Part No. | Description / Name | Applications / Operative Range | Cable (sold separately) | Connection | Installation | Weight (gr.) |
---|---|---|---|---|---|---|
ORP6XX CD Flat surface electrodes | ||||||
ORP660CD | C-PVC Double Junction ORP Combination Flat surface Electrode | - | CN653 | Twist-Lock (BNC) | EG6GP, MK660 | 100 |
ORP650CD | C-PVC Double Junction ORP Combination Flat surface Electrode | - | CN653 / CN653 TC1 | Twist-Lock (BNC) | MIFV20X05, MIMC20X05 | 100 |
ORP655CD | C-PVC Double Junction ORP Combination Flat surface Electrode with pressurized filling gel | - | CN653 | Twist-Lock (BNC) | WT675, WT675TC1 | 100 |
ORP660CDDA | Ground Loop interrupt Flat Surface pH/ORP combination Electrode | Presence of stray currents / Signal amplified | CN653 | Twist-Lock (BNC) | EG6GP, MK660 | 200 |
ORP650CDDA | Ground Loop interrupt Flat Surface pH/ORP combination Electrode | Presence of stray currents / Signal amplified | CN653 / CN653 TC1 | Twist-Lock (BNC) | MIFV20X05, MIMC20X05 | 200 |
pH6XX CD Flat surface electrodes | ||||||
PH660CD | C-PVC Double Junction pH Combination Flat surface Electrode | - | CN653 | Twist-Lock (BNC) | EG6GP, MK660 | 100 |
PH655CD | C-PVC Double Junction pH Combination Flat surface Electrode with pressurized filling gel | - | CN653 | Twist-Lock (BNC) | WT675, WT675TC1 | 100 |
PH660CDHF | C-PVC Double Junction pH Combination Flat surface Electrode | Liquids with HF (max 2%) | CN653 | Twist-Lock (BNC) | EG6GP, MK660 | 100 |
PH650CDHF | C-PVC Double Junction pH Combination Flat surface Electrode | Liquids with HF (max 2%) | CN653 / CN653TC1 | Twist-Lock (BNC) | MIFV20X05, MIMC20X05 | 100 |
PH655CDHF | C-PVC Double Junction pH Combination Flat surface Electrode with pressurized filling gel | Liquids with HF (max 2%) | CN653 | Twist-Lock (BNC) | WT675, WT675TC1 | 100 |
PH660CDDA | Ground Loop interrupt Flat Surface pH combination Electrode | Presence of stray currents / Signal amplified | CN653 | Twist-Lock (BNC) | EG6GP, MK660 | 200 |
PH650CDDA | Ground Loop interrupt Flat Surface pH combination Electrode | Presence of stray currents / Signal amplified | CN653 / CN653TC1 | Twist-Lock (BNC) | MIFV20X05, MIMC20X05 | 200 |
PH660CDLC | C-PVC Double Junction pH Combination Flat surface Electrode | Liquids with low conductivity (10 µS/cm < conductivity < 100 µS/cm) | CN653 | Twist-Lock (BNC) | EG6GP, MK660 | 100 |
PH650CDLC | C-PVC Double Junction pH Combination Flat surface Electrode | Liquids with low conductivity (10 µS/cm < conductivity < 100 µS/cm) | CN653 / CN653TC1 | Twist-Lock (BNC) | MIFV20X05, MIMC20X05 | 100 |
PH655CDLC | C-PVC Double Junction pH Combination Flat surface Electrode with pressurized filling gel | Liquids with low conductivity (10 µS/cm < conductivity < 100 µS/cm) | CN653 | Twist-Lock (BNC) | WT675, WT675TC1 | 100 |
A – Submersible PH650, ORP650
B – In-line PH660, ORP660
C – Insertion/Hot-tap PH655, ORP655
1 – BNC receptacle
2 – Viton O-rings
3 – Porous HDPE junction
4 – pH glass or platinum
C-PVC Body Flat Surface Electrode – FLS pH/ORP 600
Technical Specifications of C-PVC Body Flat Surface Electrode – FLS pH/ORP 600

Custom Product Manufacturing Available
If you are searching for customized product designs that meet your requirements, don’t worry. Petron Thermoplast also offers custom product manufacturing services to meet the unique needs of various industries. Work with our expert engineers to create custom designs suited for your application.