HACH DPC2K2A Digital pH/ORP Sensor Overview

The HACH DPC2K2A is a digital combination pH and ORP sensor. It measures across the full 0 to 14 pH range. This sensor uses a durable PVDF body material. The flat glass pH electrode resists coating and breakage. Furthermore, the HACH DPC2K2A includes a Pt 1000 ohm RTD for temperature compensation. As a result, you get accurate readings even with temperature fluctuations. The sensor connects digitally to Hach controllers via the included gateway.

Technical Specifications

The HACH DPC2K2A delivers reliable pH measurement in demanding applications. Accuracy reaches 0.1 pH under reference conditions. The body material is PVDF for excellent chemical resistance. Electrode material consists of flat glass pH electrode. Operating temperature range spans 0°C to 105°C. Pressure range reaches 0 to 6.9 bar at 100°C. This converts to 0 to 100 psig at 212°F. The measurement range covers 0 to 14 pH for full scale capability.

Now consider the sensor cable configuration. The HACH DPC2K2A comes with an integral coaxial cable. Two additional conductors support the temperature compensator option. Cable length is 4.5 meters (15 feet) . Sensor thread size is 0.75 inches. Transmission distance reaches 1000 meters (3280 feet) . However, this requires the Hach Digital Gateway, Termination Box, and sc100 Controller.

The HACH DPC2K2A uses specific wetted materials for compatibility. These include PVDF, PTFE double junction, and flat glass electrode. FKM/FPM O-rings complete the wetted parts list. Most pH applications fall between 2.5 and 12.5 pH. General purpose glass electrodes perform well in this normal range. Nevertheless, some industrial applications need measurement below pH 2 or above pH 12. Consult Hach Technical Support for these extreme pH applications.

Key Features & Benefits

• Digital communication – The HACH DPC2K2A transmits signals digitally up to 1000 meters.

• PVDF body construction – Resists harsh chemicals and mechanical stress.

• Flat glass electrode – Self-cleaning design reduces maintenance frequency.

• Integrated temperature compensation – Pt 1000 RTD ensures accurate readings.

• High temperature capability – Operates continuously at 105°C.

• Complete package – Includes gateway, cable, and manual.

Environmental & Pressure Tolerance

The HACH DPC2K2A withstands tough industrial conditions. Maximum operating temperature hits 105°C. Pressure rating reaches 6.9 bar at 100°C. For reference, 6.9 bar equals approximately 100 psi. The sensor handles both immersion and in-line installations. PVDF material resists most acids and bases. The flat glass electrode performs well in dirty or coating-prone liquids. Consequently, the HACH DPC2K2A suits wastewater, chemical processing, and power generation applications.

Installation Guidelines

Follow these steps to install the HACH DPC2K2A correctly. First, mount the sensor into a suitable process connection with 0.75 inch threads. Second, route the 4.5 meter coaxial cable away from power cables. Third, connect the sensor cable to the included digital gateway. Fourth, attach the 3 foot digital extension cable between gateway and controller. Fifth, configure the sc100 Controller to recognize the HACH DPC2K2A. Finally, perform a two-point buffer calibration before putting the sensor into service.

Do not exceed the 105°C temperature limit. Avoid sudden pressure shocks above 6.9 bar. Keep the flat glass electrode wet during storage. The HACH DPC2K2A requires periodic cleaning for best performance.

Package Contents

Your shipment includes the following items:

• 1 x HACH DPC2K2A digital combination pH/ORP sensor with 15 ft cable

• 1 x Hach Digital Gateway for signal conversion

• 1 x 3 ft digital extension cable for gateway to controller connection

• 1 x Product manual with installation and calibration instructions

No buffer solutions or mounting hardware are included. Therefore, you must order these separately. No controller is included with the HACH DPC2K2A.

Frequently Asked Questions (FAQ)

1. Can the HACH DPC2K2A measure ORP as well as pH?
Yes. The HACH DPC2K2A is a combination sensor that measures both pH and ORP. The output depends on your controller configuration.

2. What is the maximum cable length for this sensor?
The HACH DPC2K2A transmits signals up to 1000 meters. However, this requires the Digital Gateway, Termination Box, and sc100 Controller.

3. Does the sensor work without the digital gateway?
No. The HACH DPC2K2A requires the included digital gateway to communicate with Hach controllers. The gateway converts the digital signal properly.

4. Is the flat glass electrode replaceable?
No. The flat glass electrode is permanently integrated into the HACH DPC2K2A sensor body. You must replace the entire sensor if the electrode fails.

5. What temperature compensator does the DPC2K2A use?
The HACH DPC2K2A uses a Pt 1000 ohm RTD for automatic temperature compensation. This ensures accurate pH readings across varying temperatures.

Why Choose the HACH DPC2K2A?

This digital pH sensor delivers reliable performance in harsh environments. For starters, the HACH DPC2K2A uses a durable PVDF body that resists chemical attack. Its flat glass electrode design reduces cleaning frequency and prevents breakage. The integrated Pt 1000 RTD provides accurate temperature compensation up to 105°C. Furthermore, the digital transmission allows sensor placement up to 1000 meters from the controller. Hach includes the digital gateway and extension cable in the package. Most importantly, the HACH DPC2K2A covers the full 0-14 pH range for complete application flexibility.

Order the HACH DPC2K2A today for your demanding pH measurement needs. This sensor is perfect for chemical processing, power generation, wastewater treatment, and industrial manufacturing applications.