Online Sterilizable Glass pH Sensor - 120 mm
Product Notes:
1. All Online Water Quality Meters and Sensors ship direct from the factory. Please allow 10-15 business days for shipping and handling.
2. Custom options and configurations are also available. Please contact us if you need help with your specific application.
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Sterilizable Glass pH Sensor for Fermentation and Process Monitoring
The Sper Scientific 120 mm glass pH sensor measures from 0.00 to 14.00 pH in pharmaceutical production, biochemical processes, industrial fermentation, brewing and food processing. Its heat-resistant construction supports applications that require sterilization between production cycles.
A dual liquid junction and gel electrolyte reference system help provide stable measurements with reduced routine electrolyte maintenance. The Ag/AgCl reference incorporates a silver ion trap to help prevent silver sulfide deposits at the ceramic junction. The manual specifies a temperature measurement range of 0–80°C and a separate heat-resistance range of 0–130°C.
Features
- Full 0.00–14.00 pH measurement range with a listed response time of 30–60 seconds
- 120 mm insertion length with a 12 mm glass sensing shaft
- Heat-resistant construction for fermentation and sterilization applications within the specified limits
- Dual liquid junction with gel electrolyte and ceramic separator
- Silver ion trap to help protect the reference junction from silver sulfide deposits
- VP connection with optional temperature compensation
Specifications
| Parameter | Specification |
|---|---|
| Sper part number | 870002-HPH2-120 |
| Measurement | pH |
| pH range | 0.00–14.00 pH |
| Response time | 30–60 seconds |
| Insertion length | 120 mm |
| Sensing shaft diameter | 12 mm |
| Temperature measurement range | 0–80°C |
| Temperature resistance range | 0–130°C |
| Pressure resistance | 0.6 MPa (6 bar); use a suitable process housing |
| Reference system | Gel electrolyte with ceramic separator and silver ion trap |
| Reference electrode | Ag/AgCl |
| Junction design | Dual liquid junction |
| Electrical connection | VP connection, S7 also available |
| Temperature compensation | Optional Pt100, Pt1000 or other specified element |
This listing is for the 120 mm insertion length with VP connectors, temperature compensation elements and other insertion lengths are configuration dependent.
Installation requires a matching pH transmitter, connection cable and suitable mounting or process housing.
If you need assistance, please contact us to confirm your specific requirements before ordering.
FAQs
Can the sensor be used for continuous measurement at 130°C?
The manual lists 0–80°C for temperature measurement and 0–130°C for heat resistance. Confirm continuous operating conditions and sterilization requirements for your application before installation.
How is the sensor calibrated?
The manual recommends two-point calibration using suitable pH buffers. Typical examples are pH 7 for the zero point followed by pH 4 or pH 9 for the slope. Follow the connected transmitter's calibration instructions.
How should the electrode be stored?
Keep the sensing tip and junction immersed in suitable KCl storage electrolyte when the sensor is out of service. Rinse the tip after each production cycle and prevent process residue from drying on the glass or junction.
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Product Information
Product Information
Sterilizable Glass pH Sensor for Fermentation and Process Monitoring
The Sper Scientific 120 mm glass pH sensor measures from 0.00 to 14.00 pH in pharmaceutical production, biochemical processes, industrial fermentation, brewing and food processing. Its heat-resistant construction supports applications that require sterilization between production cycles.
A dual liquid junction and gel electrolyte reference system help provide stable measurements with reduced routine electrolyte maintenance. The Ag/AgCl reference incorporates a silver ion trap to help prevent silver sulfide deposits at the ceramic junction. The manual specifies a temperature measurement range of 0–80°C and a separate heat-resistance range of 0–130°C.
Features
- Full 0.00–14.00 pH measurement range with a listed response time of 30–60 seconds
- 120 mm insertion length with a 12 mm glass sensing shaft
- Heat-resistant construction for fermentation and sterilization applications within the specified limits
- Dual liquid junction with gel electrolyte and ceramic separator
- Silver ion trap to help protect the reference junction from silver sulfide deposits
- VP connection with optional temperature compensation
Specifications
| Parameter | Specification |
|---|---|
| Sper part number | 870002-HPH2-120 |
| Measurement | pH |
| pH range | 0.00–14.00 pH |
| Response time | 30–60 seconds |
| Insertion length | 120 mm |
| Sensing shaft diameter | 12 mm |
| Temperature measurement range | 0–80°C |
| Temperature resistance range | 0–130°C |
| Pressure resistance | 0.6 MPa (6 bar); use a suitable process housing |
| Reference system | Gel electrolyte with ceramic separator and silver ion trap |
| Reference electrode | Ag/AgCl |
| Junction design | Dual liquid junction |
| Electrical connection | VP connection, S7 also available |
| Temperature compensation | Optional Pt100, Pt1000 or other specified element |
This listing is for the 120 mm insertion length with VP connectors, temperature compensation elements and other insertion lengths are configuration dependent.
Installation requires a matching pH transmitter, connection cable and suitable mounting or process housing.
If you need assistance, please contact us to confirm your specific requirements before ordering.
FAQs
Can the sensor be used for continuous measurement at 130°C?
The manual lists 0–80°C for temperature measurement and 0–130°C for heat resistance. Confirm continuous operating conditions and sterilization requirements for your application before installation.
How is the sensor calibrated?
The manual recommends two-point calibration using suitable pH buffers. Typical examples are pH 7 for the zero point followed by pH 4 or pH 9 for the slope. Follow the connected transmitter's calibration instructions.
How should the electrode be stored?
Keep the sensing tip and junction immersed in suitable KCl storage electrolyte when the sensor is out of service. Rinse the tip after each production cycle and prevent process residue from drying on the glass or junction.
Description
Description
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Product Category: Probes & Finders
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