CS525-L

ISFET pH Probe

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)