pHD sc Digital pH sensor, sanitary style, PEEK, 10m cable

pHD sc Digital pH sensor, sanitary style, PEEK, 10m cable
Številka izdelka: DPD3P1.99
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Exceptional Performance with the Differential Electrode Measurement Technique

This field-proven technique uses three electrodes instead of the two normally used in conventional pH sensors. Process and reference electrodes measure the pH differentially with respect to a third ground electrode. The end result is unsurpassed measurement accuracy, reduced reference junction potential, and elimination of sensor ground loops. These sensors provide greater reliability, resulting in less downtime and maintenance.

Lower Maintenance Needs with the Double Junction Salt Bridge

The double junction salt bridge creates a barrier to contamination which minimizes the dilution of the internal standard cell solution. The result is lower maintenance needs and a longer time period between calibrations.

Extended Working Life with the Replaceable Salt Bridge/Protector

The unique, replaceable salt bridge holds an extraordinary volume of buffer to extend the working life of the sensor by protecting the reference electrode from harsh process conditions. The salt bridge simply threads onto the end of the sensor if replacement is needed.

Reliability with Built-in Encapsulated Preamp

Encapsulated construction protects the sensor’s built-in preamp from moisture and humidity, ensuring reliable sensor operation. The preamp in the pHD analogue sensor produces a strong signal, enabling the sensor to be located up to 1000 m (3280 ft.) from the analyser.

Innovative Technology

The former GLI, now a Hach Company brand, invented the Differential Electrode Technique for pH measurement in 1970. The pHD takes this field-proven technology to a new level.

Specifikacije

Compliance: Hazardous location, Maritime, CE
Delovna temperatura: -5 - 70 °C (23 - 158 °F) pHD and ORP
0 - 50 °C (32 - 122 °F) SS pHD

Before initial pH calibration, calibrate the temperature measurement when the sensor is in water or buffer which is at approximately the same temperature as the pH buffers (matches current recommendation)
Dolžina: 271.3 mm
Dolžina kabla: 10 m PUR (polyurethane) 4-conductor with one shield, rated to 105°C
Garancija: 24 mesecev
Komunikacija: Modbus
Material: Ground Electrode: Titanium
Materiali v stiku z vodo: PEEK or PPS, salt bridge of matching material with PVDF junction, glass process electrode, titanium ground electrode, and FKM/FPM® O-ring seals (pH sensor with optional HF-resistant glass process electrode has 316 stainless steel ground electrode, and perfluoroelastomer wetted O-rings; consult factory for other available wetted O-ring materials)
Material ohišja: PEEK
Merilno območje: -2.0 to 14.0 pH
Način montaže: Sanitary
Natančnost: ± 0,02 pH
Navoj senzorja: 1" NPT
Občutljivost: ± 0,01 pH
Območje tlaka: Maximum 10.7 bar. 6.9 bar for Digital Sensor at 70°C, and 6.9 bar for Analogue Sensor at 105 °C.
Oddaljenost prenosa: 1000 m (3280 ft.), maximum when used with a termination box.
  100 m (328 ft.), maximum
Pogoji skladiščenja: 4 - 70 °C, 0-95% relative humidity (non-condensing)
Ponovljivost: ± 0.05 pH
Posebni zapiski: The sanitary style sensor has an integral 2-inch flange, special cap, and EPDM compound gasket for use with a GLI 2-inch sanitary tee and mounting hardware.
Povezava s kablom: Digital
Sensor cable: 10 m (33 ft.) polyurethane, 4-conductor cable with one shield, rated to 105°C (221°F)
Stopnja pretoka: 3 m (10 ft.) per second, maximum
Temperaturna kompenzacija: Automatic with NTC 300 Ω thermistor, or manually fixed at a user-entered temperature,
additional selectable temperature correction factors (ammonia, morpholine, or user-defined pH/°C linear slope) available for pure water automatic compensation 0.0 - 50 °C
Temperaturna natančnost: ± 0.5 °C (± 0.9 °F)
Temperaturni senzor: NTC 300 Ω thermistor for automatic temperature compensation and analyzer temperature readout
Tendenca: 0.03 pH per 24 hours, non-cumulative
Teža: 0,316 kg
Umertivena metoda: Two point automatic, one point automatic, two point manual, one point manual
Vrsta elektrode: General Purpose