Hach pHD Online Process pH Sensor hach PD1R1
Description
Exceptional Process pH Sensor Performance with the Differential Electrode pHD Measurement Technique
Hach pHD Online Process pH Sensor hach PD1R1
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 process pH 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
Hach pHD Online Process pH Sensor hach PD1R1
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.
Patented 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.
Hach pHD Online Process pH Sensor hach PD1R1
Accuracy:
± 0.02 pH
Body material:
Ryton
Cable Connection:
Analog
Cable Length:
4.5 m 5-conductor (plus two isolated shields) cable with XLPE (cross-linked polyethylene) jacket; rated to 302
Calibration Method:
Two point automatic, one point automatic, two point manual, one point manual.
Communication:
MODBUS
Diameter
34.9 mm
Drift:
0.03 pH per 24 hours, non-cumulative
Electrode Type:
General Purpose
Flow:
max. 3 m/s
Length:
196.3 mm
Material:
Ground Electrode: Titanium
Mounting:
Convertible
Operating Temperature Range:
-5 - 95 °C
Pressure Range:
max. 10.7 bar Sensor only (pressure range of mounting hardware to be checked separately)
Range:
-2.0 - 14.0 pH
Repeatability:
± 0.05 pH
Sensor Thread:
1NPT at both ends
Temperature Accuracy:
± 0.5 °C
Temperature Compensation:
automatic with NTC 300 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 °
Hach pHD Online Process pH Sensor hach PD1R1
automatic with NTC 300 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 °
Temperature Sensor:
NTC 300 thermistor for automatic temperature compensation and analyzer temperature readout
Weight:
0.9534 kg
contact:
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Wuhan Xieyuan Automation Equipment Co., Ltd
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