GLI Дифференциальный ORP/pH-датчик

Operating Principle

The GLI differential ORP/pH sensor is based on differential electrode measurement technology, using three measuring electrodes instead of the two electrodes in traditional pH sensors. The pH values measured by the measuring electrode and the reference electrode are differential values relative to the third solution ground electrode. A preamplifier is used to amplify the output of each electrode, and the current signal is converted into the pH value of the water sample, which is the measurement result of the pH sensor.

Application Industries

The GLI differential ORP/pH sensor is suitable for industrial process monitoring in petroleum, pharmaceutical, papermaking and other industries; it measures, displays and transmits pH value and temperature in water treatment processes.

Features and Benefits

• The GLI differential ORP/pH sensor adopts differential technology, with three electrodes replacing the two electrodes of traditional pH sensors, reducing drift and errors for accurate and reliable results.

• The built-in preamplifier provides strong interference resistance, ensuring high-fidelity output signals from the pH sensor.

• The GLI differential ORP/pH sensor offers a choice of Ryton or PEEK materials for measuring special water samples. The Ryton material pH sensor has good compatibility with strongly alkaline substances, reducing maintenance and downtime. The PEEK material pH sensor reduces thermal deformation.

• The built-in field-replaceable salt bridge extends the service life of the GLI differential ORP/pH sensor.

• The pH sensor is compatible with the HACH sc200 or sc1000 universal controller, featuring plug-and-play operation and multiple mounting options.

• Optional self-cleaning assembly

Specifications

• Measuring range:                      pH: 0 ～14 pH

•                                 ORP: -1500～+1500mV

• Sensitivity:                        pH: ± 0.01pH

•                                ORP: ± 0.5mV

• Temp. range:                    -5～95℃

• Maximum pressure:            6.9bar at 105℃

• Probe material:                    PEEK, Ryton optional

Accessories Information

• 1000F3374-002                       PEEK electrode protective sleeve

• 1000F3374-003                       Ryton electrode protective sleeve

• SB-P1SV                                  Salt bridge for PEEK electrode

• SB-R1SV                                  Salt bridge for Ryton electrode

• 25M2A1001－ 115                  200mV ORP standard solution, 500mL

• 25M2A1002－ 115                  600mV ORP standard solution, 500mL

• 25M1A1025 －115                  Electrolyte

Ordering Guide

• Note:    

•   A. When using a convertible sensor for immersion mounting, it is recommended to order the optional protective sleeve, whose material must match that of the sensor. This protective sleeve is connected to the sensor via threads.

•    B. The HF-resistant glass electrode pH sensor is implemented through an internal PFE (perfluoroelastomer) O-ring. C. To obtain the best ORP measurement results in solutions containing zinc, cyanide, cadmium or nickel, please specify the gold electrode.

• Source: Public information from the HACH Water Quality website