Having a stable, reliable and accurate measurement is of vital importance for pH measurement and control. The SC25V pH sensor has been developed and designed to make sure that this sensor will deliver these results in every application.
The built-in temperature sensor is located close to the pH measuring glass. This will result in an increased accuracy of the temperature compensation and therefore also the pH measurement. The integrated large Titanium liquid earth will improve the stability measurement countering any stray or ground loop currents that can destroy the reference sensor.
Key Features
- External titanium Liquid Earth
- Pt1000 integration in pH compartment giving highly accurate temperature compensation
- Certified for use in Hazardous area
- Versatile in-line, immersion or off-line installation
- CIP and Steam cleaning possible*
- Useable up to 130°C / 266°F
- low conductivity applications possible from 10 μS/cm
- SC25V-ALP25 and -BLP25 for chemically harsh applications and high temperatures
- SC25V-AGP25 and -BGP25 for all General Purpose applications
- Available with ID-chip to be compatible with the new SENCOM platform
Measuring elements:
pH glass electrode
Silver/silver chloride reference
Solid platinum electrode
Pt1000 temperature sensor
Wetted parts
Sensor body / shaft: AR-Glass, PEEK
Earthing ring: Titanium
Measuring sensor: Glass (type G or L)
O-ring: Viton (EPDM back-up)
Reference junction: Porous PTFE
Functional specifications (at 25 °C)
Isothermal point: pH 7 / 3.3M KCl
Reference system: Ag/AgCl with saturated KCl
Glass impedance
G-Glass: 200 MΩ nominal
L-Glass: 775 MΩ nominal
Junction resistance: < 5 kΩ
Liquid outlet: non-flow single junction
Temperature element: Pt1000 to IEC 751
Asymmetry potential: 8 ± 15 mV
Slope: > 96 % (of theoretical value)
Sensor length: 120 mm and 225 mm
Note: The temperature sensor included in the SC25V is designed for process compensation and for indication. It is NOT designed for process temperature control.
Dynamic specificationsResponse time pH: t₉₀ < 15 sec. (for 7 to 4 pH step)Response time temperature: t₉₀ < 90 sec. (for 10 °C step)Stabilization time pH: < 2 min. (for 0.02 pH deviation during 10 sec.)
2.5 Operating rangepH: 0 to 14Temperature
G-Glass: -10 to +80 °C (14 to 176 °F)
L-Glass: +15 to +130 °C (59 to 266 °F)
Pressure
0 to 10 barg (0 to 145 psi)
0 to 0.985 barg (0 to 14.36 psi) (under pressure)
Conductivity: > 10 µS/cm
Damaging the screw thread might influence the max process pressure.
Note: The pH operating range at room temperature is 0-14 pH, but at high temperatures or range outside 2-12 pH the lifetime will be seriously shortened.
Note: The upper process temperature for the intrinsically safe version is limited by the ambient temperature (tₐₘₙ) defined for each temperature class (T3, T4, T5 and T6)
Product Tags:
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SC25V pH Sensor with Pt1000 Integration and Temperature Sensor for Accurate pH 7 Measurement Images
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