Digital pH Sensor, PEEK, Convertible, Non-Hazardous Environment
Product #:
DPD1P1.1
Unit Price
お問い合わせ
Exceptional Process pH Sensor Performance with the Differential Electrode pHD 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 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
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 takes this field-proven technology to a new level.
仕様
Body material:
PEEK
Cable Connection:
Digital
Compliance:
For non-hazardous and non-maritime applications only
Drift:
0.03 pH per 24 hours, non-cumulative
Operating Temperature Range:
-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.
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.
Sensitivity:
± 0.01 pH
Sensor Cable:
10 m (33 ft.) polyurethane, 4-conductor cable with one shield, rated to 105°C (221°F)
Sensor Thread:
1" NPT
Temperature Sensor :
NTC 300 Ω thermistor for automatic temperature compensation and analyzer temperature readout
Transmission Distance 2:
100 meters (328 ft.), combined length of both senor and add-on cable
キャリブレーション方法:
Two point automatic, one point automatic, two point manual, one point manual
圧力範囲:
Maximum 10.7 bar. 6.9 bar for Digital Sensor at 70 °C, and 6.9 bar for Analog Sensor at 105 °C.
温度精度:
± 0.5 °C (± 0.9 °F)
温度補正:
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
additional selectable temperature correction factors (ammonia, morpholine, or user-defined pH/°C linear slope) available for pure water automatic compensation 0.0 - 50 °C
再現性:
± 0.05 pH
質量:
0.316 kg
取り付け方法:
Convertible
浸水箇所:
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)
精度:
± 0.02 pH
測定範囲:
-2.0 to 14.0 pH
長さ:
271.3 mm
通信:
Modbus
電極タイプ:
General Purpose
保管条件:
4 - 70 °C, 0 - 95% relative humidity (non-condensing)
保証:
12 ヶ月
流量:
3 m (10 ft.) per second, maximum