PH4/OR4 pH/ORP 센서 시리즈는 공정 유체가 심하게 오염되었거나 화학물을 포함하는 등의 어려운 조건에서 pH/ORP 측정을 허용합니다. PH4/OR4 센서 시리즈는 간단한 장치 요구 사항을 만족합니다.
PH4P | Polymer Electrolyte pH Sensor |
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PH4PT | Polymer Electrolyte pH Sensor with RTD (resistance temperature detector) |
OR4P | Polymer Electrolyte ORP Sensor |
PH4F | HF-Resistant pH Sensor |
PH4FT | HF-Resistant pH Sensor with RTD (resistance temperature detector) |
PH4C | pH sensor for Chemical Process |
PH4CT | pH sensor for Chemical Process with RTD (resistance temperature detector) |
OR4C | ORP sensor for Chemical Process |
PH4FE | pH sensor for Fermentation |
Details

PH4P Polymer Electrolyte pH Sensor
- Allows pH measurement under severe conditions, such as where the process fluid is heavily contaminated or contains sulfide.
- With polymer used as the inner solution, the liquid junction is large (1.0 mm to 1.5 mm), and there are 2 single pores, which prevent clogging.
Specifications
Measuring range | pH 2 to 14 |
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Measuring temperature | 0 to 110℃ |
Measuring pressure | Atmospheric pressure to 1.6 MPa (Temperature 25℃) Atmospheric pressure to 600 kPa (Temperature 100℃) |
Internal electrolyte | Polymer electrolyte including KCl |
Resistance temperature detector | None (Manual temperature compensation on the converter or transmitter) (Use adapter with temperature sensor SA405 for application where temperature varies) |
Liquid junction | Aperture form, 2 single pores |
Head form | S8 (Use cable for S8 or S7) |
Wetted part material | Body; Glass O-ring; Fluororubber (FPM) or Perfluoroelastomer (FFKM) Adapter; Stainless steel (SUS316), Polypropylene or Rigid polyvinyl chloride |
Applicable holder | Flow-through holder (PH8HF), Submersion holder (PH8HS)(An option adapter is needed, but not needed when using the adapter with temperature sensor SA405). Ultrasonic cleaning is not available. Use a holder with jet cleaning equipment when automatic cleaning is necessary. |
Applications
- the severe environment such as chemistry, the petrochemistry
- The sugar manufacture, dye, industrial waste water, the paper manufacture

PH4PT Polymer Electrolyte pH Sensor with RTD (resistance temperature detector)
- Allows pH measurement under severe conditions, such as where the process fluid is heavily contaminated or contains sulfide.
- With polymer used as the inner solution, the liquid junction is large (1.0 mm to 1.5 mm), and there are 2 single pores, which prevent clogging.
- The sensor signal is stable by the resistance temperature detector.
Specifications
Measuring range | pH 2 to 14 |
---|---|
Measuring temperature | 0 to 110℃ |
Measuring pressure | Atmospheric pressure to 1.6 MPa (Temperature 25℃) Atmospheric pressure to 600 kPa (Temperature 100℃) |
Internal electrolyte | Polymer electrolyte including KCl |
Resistance temperature detector | Pt1000 |
Liquid junction | Aperture form, 2 single pores |
Head form | VP6 (Use cable for VP6) |
Wetted part material | Body; Glass O-ring; Fluororubber (FPM) or Perfluoroelastomer (FFKM) Adapter; Stainless steel (SUS316), Polypropylene or Rigid polyvinyl chloride |
Applicable holder | Flow-through holder (PH8HF), Submersion holder (PH8HS)(An option adapter is needed). Ultrasonic cleaning is not available. Use a holder with jet cleaning equipment when automatic cleaning is necessary. |
Applications
- the severe environment such as chemistry, the petrochemistry
- The sugar manufacture, dye, industrial waste water, the paper manufacture

OR4P Polymer Electrolyte ORP Sensor
- Allows ORP measurement under severe conditions, such as where the process fluid is heavily contaminated or contains sulfide.
- With polymer used as the inner solution, the liquid junction is large (1.0 mm to 1.5 mm), and there are 2 single pores, which prevent clogging.
Specifications
Measuring range | -1500 to 1500 mV |
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Measuring temperature | 0 to 110℃ |
Measuring pressure | Atmospheric pressure to 1.6 MPa (Temperature 25℃) Atmospheric pressure to 600 kPa (Temperature 100℃) |
Internal electrolyte | Polymer electrolyte including KCl |
Resistance temperature detector | None |
Liquid junction | Aperture form, 2 single pores |
Head form | S8 (Use cable for S8) |
Wetted part material | Body; Glass, platinum O-ring; Fluororubber (FPM) Adapter; Stainless steel (SUS316), Polypropylene or Rigid polyvinyl chloride |
Applicable holder | Flow-through holder (PH8HF), Submersion holder (PH8HS)(An option adapter is needed). Ultrasonic cleaning is not available. Use a holder with jet cleaning equipment when automatic cleaning is necessary. |
Applications
- the severe environment such as chemistry, the petrochemistry
- The sugar manufacture, dye, industrial waste water, the paper manufacture

PH4F HF-Resistant pH Sensor
- The special sensing membrane allows measurement of solutions or drainage containing hydrofluoric acid.
- With polymer used as the inner solution, the liquid junction is large (1.0 mm to 1.5 mm), and there are 2 single pores, which prevent clogging.
Specifications
Measuring range | pH 2 to 11 |
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High limit of HF strength | When pH2, maximum 500 ppm When pH3, maximum 1000 ppm When pH4, maximum 10000 ppm When pH5 over, there is no high limit |
Measuring temperature | 0 to 80℃ |
Measuring pressure | Atmospheric pressure to 1.6 MPa (Temperature 25℃) Atmospheric pressure to 600 kPa (Temperature 100℃) |
Internal electrolyte | Polymer electrolyte including KCl |
Resistance temperature detector | None (Manual temperature compensation on the converter or transmitter) (Use adapter with temperature sensor SA405 for application where temperature varies) |
Liquid junction | Aperture form, 2 single pores |
Head form | S8 (Use cable for S8 or S7) |
Wetted part material | Body; Glass O-ring; Fluororubber (FPM) or Perfluoroelastomer (FFKM) Adapter; Stainless steel (SUS316), Polypropylene or Rigid polyvinyl chloride |
Applicable holder | Flow-through holder (PH8HF), Submersion holder (PH8HS)(An option adapter is needed, but not needed when using the adapter with temperature sensor SA405). Ultrasonic cleaning is not available. Use a holder with jet cleaning equipment when automatic cleaning is necessary. |
Applications
- the severe environment such as chemistry, the petrochemistry
- The sugar manufacture, dye, industrial waste water, the paper manufacture
- Solutions, drainage containing hydrofluoric acid

PH4FT HF-Resistant pH Sensor with RTD (resistance temperature detector)
- The special sensing membrane allows measurement of solutions or drainage containing hydrofluoric acid.
- With polymer used as the inner solution, the liquid junction is large (1.0 mm to 1.5 mm), and there are 2 single pores, which prevent clogging.
- pH sensor with RTD PH4FT is also available.
Specifications
Measuring range | pH 2 to 11 |
---|---|
High limit of HF strength | When pH2, maximum 500 ppm When pH3, maximum 1000 ppm When pH4, maximum 10000 ppm When pH5 over, there is no high limit |
Measuring temperature | 0 to 80℃ |
Measuring pressure | Atmospheric pressure to 1.6 MPa (Temperature 25℃) Atmospheric pressure to 600 kPa (Temperature 100℃) |
Internal electrolyte | Polymer electrolyte including KCl |
Resistance temperature detector | Pt1000 |
Liquid junction | Aperture form, 2 single pores |
Head form | S8 (Use cable for S8) |
Wetted part material | Body; Glass O-ring; Fluororubber (FPM) or Perfluoroelastomer (FFKM) Adapter; Stainless steel (SUS316), Polypropylene or Rigid polyvinyl chloride |
Applicable holder | Flow-through holder (PH8HF), Submersion holder (PH8HS)(An option adapter is needed). Ultrasonic cleaning is not available. Use a holder with jet cleaning equipment when automatic cleaning is necessary. |
Applications
- the severe environment such as chemistry, the petrochemistry
- The sugar manufacture, dye, industrial waste water, the paper manufacture
- Solutions, drainage containing hydrofluoric acid

PH4C pH sensor for Chemical Process
- Extremely long life span for pH measurement in electrolytic process
- With the pressurized inner solution, a pressure holder is not needed
- The reference electrode is composed of silver ion trap which inhibits the generation of sulfide around the ceramic liquid junction.
Specifications
Measuring range | pH 0 to 14 |
---|---|
Measuring temperature | 0 to 100℃ |
Measuring pressure | Atmospheric pressure to 250 kPa (Depends on the inner pressure of the sensor) |
Internal electrolyte | Polymer electrolyte including KCl |
Resistance temperature detector | None |
Liquid junction | 1 ceramic junction |
Head form | S8 (Use cable for S8 or S7) |
Wetted part material | Body: Glass O-ring: Ethylene Propylene Diene Rubber(EPDM), Perfluoroelastomer (FFKM) Adapter; Stainless steel (SUS316), Polypropylene or Rigid polyvinyl chloride, Heat-resistant vinyl chloride or Titanium |
Applicable holder | Flow-through holder (PH8HF), Submersion holder (PH8HS)(An option adapter is needed, but not needed when using the adapter with temperature sensor SA405). Ultrasonic cleaning is not available. Use a holder with jet cleaning equipment when automatic cleaning is necessary. |
Applications
- Bioreactor, industrial process, down stream process
- The measurement of soda electrolyte solution, the liquid including the organic solvent

PH4CT pH sensor for Chemical Process with RTD (resistance temperature detector)
- Extremely long life span for pH measurement in electrolytic process.
- With the pressurized inner solution, a pressure holder is not needed.
- The reference electrode is composed of silver ion trap which inhibits the generation of sulfide around the ceramic liquid junction.
- The sensor signal is stable by the resistance temperature detector.
Specifications
Measuring range | pH 0 to 14 |
---|---|
Measuring temperature | 0 to 100℃ |
Measuring pressure | Atmospheric pressure to 250kPa (Depends on the inner pressure of the sensor) |
Internal electrolyte | Polymer electrolyte including KCl |
Resistance temperature detector | Pt1000 |
Liquid junction | 1 ceramic junction |
Head form | VP6 (Use cable for VP6) |
Wetted part material | Body: Glass O-ring: Ethylene Propylene Diene Rubber(EPDM), Perfluoroelastomer (FFKM) Adapter; Stainless steel (SUS316), Polypropylene or Rigid polyvinyl chloride, Heat-resistant vinyl chloride or titanium |
Applicable holder | Flow-through holder (PH8HF), Submersion holder (PH8HS)(An option adapter is needed). Ultrasonic cleaning is not available. Use a holder with jet cleaning equipment when automatic cleaning is necessary. |
Applications
- Bioreactor, industrial process, down stream process
- The measurement of soda electrolyte solution, the liquid including the organic solvent

OR4C ORP sensor for Chemical Process
- Extremely long life span for ORP measurement in electrolytic process
- With the pressurized inner solution, a pressure holder is not needed
- The reference electrode is composed of silver ion trap which inhibits the generation of sulfide around the ceramic liquid junction.
Specifications
Measuring range | -1500 to 1500 mV |
---|---|
Measuring temperature | 0 to 100℃ |
Measuring pressure | Atmospheric pressure to 250 kPa (Depends on the inner pressure of the sensor) |
Internal electrolyte | Polymer electrolyte including KCl |
Resistance temperature detector | None |
Liquid junction | 1 ceramic junction |
Head form | S8 (Use cable for S8 or S7) |
Wetted part material | Body: Glass, platinum O-ring: Ethylene Propylene Diene Rubber(EPDM) Adapter; Stainless steel (SUS316), Polypropylene or Rigid polyvinyl chloride, Heat-resistant vinyl chloride or titanium |
Applicable holder | Flow-through holder (PH8HF), Submersion holder (PH8HS)(An option adapter is needed). Ultrasonic cleaning is not available. Use a holder with jet cleaning equipment when automatic cleaning is necessary. |
Applications
- Bioreactor, industrial process, down stream process
- The measurement of soda electrolyte solution, the liquid including the organic solvent

PH4FE pH sensor for Fermentation
- Inner solution can be refilled.
- There are 2 pores of ceramic liquid junctions.
- The reference electrode is composed of silver ion trap which inhibits the generation of sulfide around the ceramic liquid junction.
Specifications
Measuring range | pH 0 to 12 |
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Measuring temperature | 0 to 105℃ (Sterilization temperature: maximum 130℃) |
Measuring pressure | Atmospheric pressure to 600 kPa |
Internal electrolyte | Viscous 3 M KCl-LR |
Resistance temperature detector | None (Manual temperature compensation on the converter or transmitter) |
Liquid junction | 3 ceramic junctions |
Head form | S7 (Use cable for S8 or S7) |
Wetted part material | Body; Glass |
Applicable holder | PH4FE cannot be used with PH8HF or PH8HS. When a holder is needed, consult sales personnel. |
Applications
- Industrial process, the mining industry, the paper manufacture, fermentation
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