Hach pHD sc Online Process pH Sensor – General Purpose pH Sensor
500.00৳
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The smart choice for accurate and reliable online process pH measurement
General Purpose Online Process pH Sensor with Integrated Digital Electronics for “Plug and Play” with Hach sc Digital Controllers – pHD Technology, Glass pH Electrode, PEEK Housing, Convertible Mount, 10m Cable
Applications:
- Membrane Protection
- Nutrient Monitoring
- Nutrient Monitoring
- Secondary Treatment
- Secondary Treatment
- Ultrapure Water
Benefits
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 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 sensor series takes this field-proven technology to a new level.
Specifications
Technical Attributes
| Accuracy | ± 0.02 pH |
| Body material | PEEK |
| Cable Connection | Digital |
| Communication | Modbus |
| Compliance | Hazardous Location, Maritime, CE |
| Diameter | 35.4 mm |
| Drift | 0.03 pH per 24 hours, non-cumulative |
| Electrode Type | General Purpose |
| Flow Rate | 3 m (10 ft.) per second, maximum |
| Length | 271.3 mm |
| 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) |
| Pressure Range | Maximum 10.7 bar . 6.9 bar for Digital Sensor at 70°C, and 6.9 bar for Analog Sensor at 105°C. |
| Range | -2.0 to 14.0 pH -1500 to +1500 mV ORP |
| Repeatability | ± 0.05 pH |
| Sensitivity | ± 0.01 pH |
| Sensor Cable | 1.8 m (6 ft.) polyurethane, 4-conductor cable with one shield, rated to 105°C (221°F) |
| Sensor Thread | 1″ NPT |
| Storage Conditions | 4 – 70°C, 0-95% relative humidity (non-condensing) |
| Temperature Accuracy | ± 0.5 °C (± 0.9 °F) |
| Temperature Compensation | 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 |
| Temperature Sensor | NTC 300 Ω thermistor for automatic temperature compensation and analyzer temperature readout |
| Transmission Distance | 100 m (328 ft.), maximum |
| Transmission Distance | 1000 m (3280 ft.), maximum when used with a termination box. |
| Warranty | 12 months |
| Weight | 0.316 kg |
| Wetted Materials | 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) |
Shipping Information
Out Of Dhaka: 1–3 working days for most locations within Bangladesh and cost only ৳120 TAKA.
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Return Policy
You may return items purchased from Meter BD Shop within 7 days of receiving the product.
To be eligible for a return, the product must meet the following conditions:
1. Unused, 2. In the original packaging & 3. Proof of purchase.
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