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pHD sc Digital differential pH sensor, convertible, 1", PEEK
Longer service life
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.
2 year phased warranty*
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.
Plug and play with SC controllers
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.
Patented 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.
Specifikationer
Arbetstemperatur :
-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)
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)
Compliance:
Hazardous location, Maritime, CE
Drift:
0.03 pH per 24 hours, non-cumulative
Elektrodtyp:
General Purpose
Flödeshastighet:
3 m (10 ft.) per second, maximum
Fuktade material:
PEEK eller PPS, saltbrygga av passande material med PVDF-saltbrygga, mätelektrod av glas, jordelektrod av titan och O-ringar av FKM/FPM (pH-givare med alternativet HF-resistent mätelektrod av glas har jordelektrod av rostfritt stål SS 316 och O-ringar av perfluorelastomer; kontakta återförsäljaren för närmare information om vilka material som finns för de vätskeberörda O-ringarna)
Garanti :
24 månader
Givargänga:
1 " NPT at both ends
Kabelanslutning :
Digital
Kabellängd:
10 m PUR (polyurethane) 4-conductor with one shield, rated to 105°C
Kalibreringsmetod :
Two point automatic, one point automatic, two point manual, one point manual.
Känslighet:
± 0,01 pH
Kommunikation:
Modbus
Lagringsförhållanden:
4 - 70 °C, 0-95% relative humidity (non-condensing)
Längd:
271.3 mm
Material:
PEEK
Titanium
Mätområde:
-2.0 to 14.0 pH
-1500 to +1500 mV ORP
-1500 to +1500 mV ORP
Monteringsform:
Convertible
Noggrannhet:
± 0.02 pH
Överföringsavstånd:
1000 m (3280 fot), maximalt vid användning med kopplingsdosa.
100 m (328 fot), maximum
Repeterbarhet:
± 0.05 pH
Sensor cable:
10 m (33 ft.) polyurethane, 4-conductor cable with one shield, rated to 105°C (221°F)
Temperaturgivare:
NTC 300 Ω thermistor for automatic temperature compensation and analyser temperature readout
Temperaturkompensation:
Automatisk med en 300W NTC-termistor, eller manuellt inställd fast tempertur.
Temperaturnoggrannhet:
± 0,5 °C
Tryckområde:
Maximum 10.7 bar . 6.9 bar for Digital Sensor at 70°C, and 6.9 bar for Analog Sensor at 105°C.
Vikt :
0,316 kg