Digital pH Sensor, PPS, Convertible, Non-Hazardous Environment

Digital pH Sensor, PPS, Convertible, Non-Hazardous Environment
Nr produktu: DPD1R1.1
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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 analog sensor produces a strong signal, enabling the sensor to be located up to 1000 m (3280 ft.) from the analyzer.

Innovative Technology

The former GLI, now a Hach Company brand, invented the Differential Electrode Technique for pH measurement in 1970. The pHD™ sensor series (U.S. Patent Number 6395158B1, dated May 28, 2002) takes this field-proven technology to a new level.

Zawartość opakowania

Includes: sensor with 33 ft cable and manual

Parametry techniczne

Compliance: For non-hazardous and non-maritime applications only
Czujnik temperatury: NTC 300 Ω thermistor for automatic temperature compensation and analyzer temperature readout
Czułość: ± 0,01 pH
Długość: 271.3 mm
Długość kabla: 10 m PUR (polyurethane) 4-conductor with one shield, rated to 105°C
Dokładność: ± 0,02 pH
Dokładność temperatury: ± 0.5 °C (± 0.9 °F)
Dryft: 0.03 pH per 24 hours, non-cumulative
Gwarancja: 24 miesięcy
Gwint czujnika: 1" NPT
Kabel czujnika: 10 m, Poliuretan, kabel 4-przewodowy z jedną osłoną, wyskalowany do 105 °C
Kompensacja temperatury: 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
Komunikacja: Modbus
Materiał: Ground Electrode: Titanium
Materiał obudowy: PPS
Materiały stykające się z medium: 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)
Metoda kalibracji: Two point automatic, one point automatic, two point manual, one point manual.
Odległość transmisji: 1000 m maksimum osiągalne w przypadku korzystania z puszki przyłączeniowej
  100 m (328 stóp), maksymalnie
Podłączenie kabla: Digital
Powtarzalność: ± 0.05 pH
Sposób montażu: Convertible
Temperatura pracy: -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)

Please Note:
When the sensor is placed into the application sample, if that sample is more than 10 °C (18 °F) different than the previous temperature/pH calibration, then it is recommended to recalibrate the temperature while the sensor is in the sample to maintain the ±0.5 °C (±0.9 °F) temperature accuracy specification.
Typ elektrody: General Purpose
Waga: 0,316 kg
Warunki przechowywania: 4 - 70 °C, 0 - 95% relative humidity (non-condensing)
Współczynnik przepływu: 3 m (10 ft.) per second, maximum
Zakres ciśnienia: Maximum 10.7 bar. 6.9 bar for Digital Sensor at 70 °C, and 6.9 bar for Analog Sensor at 105 °C.
Zakres pomiarowy: -2.0 to 14.0 pH
Zawartość opakowania: Includes: sensor with 33 ft cable and manual