Product Introduction
The Hach DRC2K5N digital combination pH/ORP sensor delivers highly reliable electrochemical measurements for demanding industrial processes. This premium probe combines analytical precision with an exceptionally rugged mechanical design. It features a heavy-duty PVDF housing and a high-purity platinum electrode. The sensor excels at monitoring oxidation-reduction potential across a wide dynamic range. Engineers trust this combination assembly for critical process loop control. It ensures long-term operational stability and minimizes measurement drift in harsh chemical environments.
Device Compatibility
The Hach DRC2K5N integrates seamlessly with the following industrial water quality instruments and control systems:
- Hach Digital Gateway modules
- Hach Termination Box assemblies
- Hach sc100 Digital Controllers
- Hach sc200 Universal Controllers
- Distributed Control Systems (DCS) via digital controller outputs
- Programmable Logic Controllers (PLC) via digital fieldbus networks
Technical Specifications
- Brand: Hach
- Model: DRC2K5N
- Measurement Range: -2000 mV to 2000 mV
- Measurement Accuracy: ± 20 mV limited to calibration solution accuracy
- Sensitivity & Resolution: Highly responsive platinum surface provides precise 1 mV resolution steps
- Linearity: Maintains linear voltage output across the entire designated millivolt spectrum
- Frequency Response: Optimized for continuous industrial process loops with fast stabilization times
- Operating Temperature Range: 0 °C to 105 °C (32 °F to 221 °F)
- Pressure Range & Tolerance: 0 to 6.9 bar at 100 °C (0 to 100 psig at 212 °F)
- Body & Housing Material: Premium PVDF (Polyvinylidene Fluoride)
- Electrode Material: Pure Platinum Electrode
- Wetted Materials: PVDF, PTFE double junction, glass with platinum electrode, and FKM/FPM O-rings
- Temperature Compensation: None (Raw digital millivolt transmission)
- Sensor Thread Size: 0.75″ NPT (Three-Quarter Inch)
- Sensor Cable Length: Integral coaxial cable measuring 4.5 meters (15 feet)
- Long-Distance Transmission: Achieves 1000 meters (3280 feet) transmission distance using the Hach Digital Gateway
Typical Application Scenarios
- Industrial wastewater treatment facilities monitoring chemical dechlorination and neutralization loops
- Chemical manufacturing plants tracking oxidation processes and aggressive chemical reactions
- Municipal water treatment plants managing disinfection systems and chlorination control
- Metal finishing and electroplating facilities regulating chrome reduction and cyanide destruction
- Cooling tower water treatment systems supervising biocide dosing effectiveness
Installation Guide
- Inspect the Hach DRC2K5N sensor tip for any physical damage before physical installation.
- Apply appropriate PTFE thread tape to the 0.75″ NPT sensor mounting threads.
- Thread the sensor manually into the process pipe fitting to avoid cross-threading.
- Tighten the sensor securely using an open-ended wrench without applying excessive torque.
- Position the sensor at least 15 degrees above horizontal to ensure proper internal electrolyte contact.
- Route the integral 4.5-meter coaxial cable away from high-voltage power lines to prevent EMI.
- Connect the sensor cable leads directly to the Hach Digital Gateway module terminal block.
Commissioning & Maintenance Convenience
- The digital combination design allows for rapid plug-and-play commissioning with sc100 controllers.
- The flat PVDF surface reduces biological fouling and chemical scaling on the sensor tip.
- The flat PTFE double junction minimizes cleaning frequency in high-solids applications.
- The sensor supports simple two-point buffer calibration routines through the digital controller interface.
- The rugged wetted materials allow for easy chemical cleaning using mild hydrochloric acid solutions.
Diagnostic Capabilities
- The sensor transmits direct digital signals to identify connection faults instantly.
- The host controller monitors signal stability to detect electrode coating or fouling trends.
- Built-in diagnostic routines flag calibration errors when the offset voltage exceeds permissible limits.
- The system detects asymmetrical potential shifts during regular reference solution validation checks.
Packaging List & Warranty Terms
- One Brand New Hach DRC2K5N Digital Combination pH/ORP Sensor
- Integral 4.5-meter (15 ft) coaxial connection cable
- Factory protective sensor cap containing storage solution
- Instruction manual and technical installation documentation
- Warranty: 12-Month comprehensive warranty coverage against manufacturing defects
Shipping & Logistics Info
- Dispatch Time: Fast 24-48 hour shipment processing for all in-stock orders
- Express Delivery Carriers: Reliable worldwide shipping via FedEx, UPS, and DHL
- Packaging: Secure industrial-grade packaging protects the delicate glass elements during transit
FAQ
What is the primary benefit of the platinum electrode on the Hach DRC2K5N?
The pure platinum electrode provides exceptional catalytic activity for electron transfer, ensuring rapid response times during ORP measurements.
Can I use the Hach DRC2K5N sensor in highly acidic solutions below 2 pH?
Most standard applications fall within 2.5 to 12.5 pH, so you must consult technical support for extreme pH ranges.
Does this digital sensor include built-in automatic temperature compensation?
No, this specific model does not feature integrated temperature compensation and transmits raw digital millivolt values.
How does the double junction design improve the operational lifespan of the sensor?
The PTFE double junction creates an extra barrier that prevents aggressive process chemicals from poisoning the internal reference cell.
What is the maximum distance I can route the sensor signal?
You can extend the transmission distance up to 1000 meters using a Hach Digital Gateway and Termination Box.
Purchasing Guide
- Verify your exact process chemistry to ensure total compatibility with the wetted PVDF and PTFE materials.
- Confirm your existing controller model supports the digital gateway interface before completing your purchase.
- Determine if your piping layout requires an immersion, in-line, or flow-through tee mounting configuration.
- Measure the distance from the insertion point to the controller to see if you need extension cables.
- Order matching ORP standard solutions (200 mV or 465 mV) for your initial commissioning calibration.
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