Campbell Scientific’s new CS525 pH probe provides reliable, accurate pH measurements in aqueous or semi-solid solutions, and can be submersed or inserted into tanks, pipelines, and open channels.
The CS525 uses SENTRON’s high-tech, ion-sensitive field-effect transistor (ISFET) semiconductor as its pH-sensitive element, and includes a silver/silver-chloride potassium-chloride reference system. The ISFET technology is the most powerful pH monitoring technology available today. This technology considerably reduces the number of acidic or alkaline errors in extreme pH conditions. It allows the CS525 to monitor pH in liquids containing high solids, aggressive chemicals, or biological materials that would clog or contaminate the junction of the traditional glass-bulb pH probes.
The probe’s electronics are safely embedded in a durable PEEK body. Elimination of the glass-bulb removes the possibility of broken glass, making the CS525 more durable and safer to use.

Features
Innovative ISFET pH-sensing element 
No clogging or contamination of junction 
Easily cleaned 
More rugged than the traditional glass-electrode pH probes 
Compatible with all Campbell Scientific dataloggers (including the CR200 series) 
Stringent quality control--ISO 9001 environment 
Each sensor individually tested 
CE compliant 
Fully temperature-compensated 
Specifications
pH Range: 0 to 14 
Power Requirements: 4.5 to 5.5 Vdc 
Current Consumption:  2 mA nominal 
Measurement Time:   200 ms < t67% <500 ms 
Outputs:  0 to 5000 mV; 2700 mV at pH7 and 25°C with a sensitivity of 270 mV to 330 mV/pH at 25°C 
Accuracy:   ±0.1 pH with two point calibration 
Allowed Water Pressure: 0 to 30 kPa (0 to 45 psi) 
Cable Type: two-twisted pair, 22 AWG cable with Santoprene jacket 
Sensor Material: polyaryletheretherketone (PEEK)
Producing Area:USA