Campbell Scientific’s CS525 pH probe provides reliable, accurate pH measurements that are fully temperature compensated. This probe makes general pH measurements in aqueous or semi-solid solutions, and can be submersed or inserted into tanks, pipelines, and open channels.Read More
The "-L" on a product model indicates that the cable length is specified at the time of order.
The CS525 uses SENTRON’s high-tech, Ion Sensitive Field Effect Transistor (ISFET) semi-conductor 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 CS525’s rugged design makes it suitable for just about any liquid pH-monitoring application, from laboratory to harsh field applications. 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.
|Note: The CS525-L ISFET pH Sensor is highly susceptible to ground looping and galvanic conditions. The best isolation technique to overcome these issues is to use a CWS900-series Wireless Sensor Interface. In many cases, the CS525 can also be isolated by NOT grounding the datalogger to an earth ground. Please discuss your application with Campbell Scientific before purchasing the sensor.|
|CE Compliance||CE Compliant|
|pH Range||0 to 14|
|Power Requirements||4.5 to 5.5 Vdc|
|Current Consumption||2 mA (nominal)|
|Measurement Time||200 ms < 67% < 500 ms|
|Accuracy||±0.1 pH (with two-point calibration)|
|Operating Temperature||0° to 70°C|
|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)|
|Diameter||16 mm (0.63 in.)|
|Maximum Cable Length||300 m (1000 ft)|
|Length||190 mm (7.48 in.)|
|Weight||318 g (11.2 oz) with 3.05-m (10-ft) cable|
|-NOTE-||Output range used depends on which wires are connected to the datalogger.|
|Range B||±400 mV with a sensitivity of -45 mV to -50 mV/pH at 25°C|
*The CR200(X)-series dataloggers require the VDIV2:1 2-to-1 Voltage Divider; contact Campbell Scientific about using this sensor with a retired datalogger.