HACH DPC3K2A Digital Combination pH/ORP Sensor Overview

The HACH DPC3K2A is a digital combination pH and ORP sensor. This device measures pH across the full 0 to 14 range. Accuracy reaches 0.1 pH under reference conditions. A general purpose glass electrode performs the measurement task. The sensor body uses 316 stainless steel and PVDF materials. These materials provide excellent chemical resistance in tough environments. Operating temperatures range from 0°C up to 105°C. Pressure handling reaches 6.9 bar at 100°C. For demanding industrial applications, the HACH DPC3K2A delivers reliable performance.

Technical Specifications of HACH DPC3K2A

Measurement Range: [Color: Red] 0 to 14 pH [/Color] (combination pH sensor).

Accuracy: 0.1 pH under reference conditions.

Body Material: 316 stainless steel and PVDF.

Electrode Material: General purpose glass pH electrode.

Operating Temperature Range: 0°C to 105°C.

Pressure Range: 0 to 6.9 bar at 100°C (0 to 100 psig at 212°F).

Sensor Cable: Integral coaxial cable with 4.5m (15 ft.) length. Two additional conductors support the temperature compensator option.

Sensor Thread Size: 0.75 inch.

Temperature Compensation: Pt 1000 ohm RTD built into the sensor.

Signal Transmission Distance: Up to 1000m (3280 ft.) when used with specific Hach components. These components include the Digital Gateway, Termination Box, and sc100 Controller.

Wetted Materials: 316SS, PVDF, PTFE double junction, glass electrode, and FKM/FPM O-rings.

Application Guidelines for pH Measurement

Most pH applications fall within the 2.5 to 12.5 pH range. The HACH DPC3K2A performs very well in this common range. Some industrial applications require pH values below 2. Others need accurate control above pH 12. For these extreme applications, consult Hach Technical Support. They can provide specific guidance for your process conditions.

Key Features of the DPC3K2A Sensor

Digital communication ensures reliable signal transmission over long distances. The HACH DPC3K2A works seamlessly with Hach digital controllers. A Pt 1000 RTD provides accurate temperature compensation for pH readings. The 316SS and PVDF construction resists corrosion from chemicals. PTFE double junction reference design extends sensor life in dirty samples. FKM/FPM O-rings provide excellent sealing against process fluids. The 0.75 inch thread fits standard mounting hardware. Integral coaxial cable simplifies installation and reduces connection points.

Installation Guidelines for HACH DPC3K2A

First, unpack the HACH DPC3K2A carefully from its shipping box. Inspect the glass electrode for any visible damage before installation. Mount the sensor using the 0.75 inch thread into your process connection. Connect the integral coaxial cable to the digital gateway unit. Attach the 3 ft digital extension cable between gateway and controller. Ensure all connections are tight and free from moisture. Power up the sc100 Controller to communicate with the HACH DPC3K2A. Verify the temperature reading matches your process conditions. Perform a two-point calibration using standard buffer solutions. Finally, install the sensor into your process line or tank.

Application Scenarios for DPC3K2A

Wastewater treatment plants use the HACH DPC3K2A for neutralization monitoring. Chemical processing facilities rely on its 316SS body for acid resistance. Food and beverage industries need accurate pH control for product quality. Power generation plants monitor cooling water pH with this sensor. Pharmaceutical manufacturing requires precise pH measurement for batch processes. The HACH DPC3K2A handles temperatures up to 105°C easily. Pressure ratings up to 6.9 bar suit many industrial pipe installations.

Package List for HACH DPC3K2A

• One HACH DPC3K2A digital combination pH sensor with 15 ft cable

• One Hach digital gateway unit

• One 3 ft digital extension cable

• One product instruction manual

• One storage bottle with protective cap (dry)

Common FAQs about the HACH DPC3K2A

Q1: What is the maximum transmission distance for the DPC3K2A?

The HACH DPC3K2A transmits signals up to 1000 meters (3280 feet). This requires the Digital Gateway, Termination Box, and sc100 Controller.

Q2: Can I use the HACH DPC3K2A for high temperature applications?

Yes, this sensor operates continuously from 0°C to 105°C. Many industrial hot processes fall within this temperature range.

Q3: What wetted materials are used in the DPC3K2A?

Wetted materials include 316SS, PVDF, PTFE double junction, glass electrode, and FKM/FPM O-rings. These materials resist most industrial chemicals.

Q4: Does the sensor include automatic temperature compensation?

Yes, the HACH DPC3K2A has a built-in Pt 1000 ohm RTD. This probe provides accurate temperature compensation for pH readings.

Q5: How long is the standard cable on the DPC3K2A?

The integral coaxial cable measures 4.5 meters (15 feet) in length. Two additional conductors are included for the temperature compensator option.