SC25V pH Sensor with Pt1000 Integration and Temperature Sensor for Accurate pH 7 Measurement

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)

Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of  measuring instruments , located in China xi’an City. Since 2008, Xi'an Kacise focused on the development and production of pressure, level and flow measuring instruments .

We have been specializing in manufacturing pressure, level and flow measuring instruments and related products for 10 years. Based on experienced technical and management personnel, through efforts of our entire staff, we have become a professional measuring instrument manufacturer and solution provider. And we are continuously trying to improve product quality.

Xi'an Kacise is qualified with ISO 9001-2008, GJB 9001B-2009, CE, intrinsic safety explosion-proof and isolated safety explosion-proof certificates, etc. which ensure that our products comply with international standards.

Kacise sensors have already been exported to America, Spain, Australia, Chile and 20 other countries and regions, and received many favorable feedbacks. Our overseas distributers are also increasing. We regard “reasonable prices, efficient production time and good after-sales service” as our tenet, and hope to cooperate with more customers for mutual development.

Our goal is simple: to sell the best products at the best prices, and provides industry-leading customer service. We personally get to know each of our customers, and we know how to discover the most valuable part of our business , to help others achieve their goals.