Product Overview

The HACH DRC1R5N is a digital combination pH and ORP sensor. This sensor measures oxidation reduction potential in industrial liquids. The measurement range spans from -2000 to 2000 mV. A platinum electrode provides the sensing surface for accurate readings. The DRC1R5N comes with an integral coaxial sensor cable. Delivery includes the AD 1200 Digital Gateway and a digital extension cable.

Series and Product Classification

• Series: Hach Digital ORP Series

• Product Type: Digital Combination pH/ORP Sensor

• Product Classification: Sensor, Transducer & Probe

• Current Price (RMB): ¥6,850.00

• Gross Weight: 0.95 kg

Technical Specifications

This section details the core parameters of the HACH DRC1R5N.

Measurement Specifications

• Measurement Range: -2000 to 2000 mV

• Accuracy: ±20 mV (limited to calibration solution accuracy)

• Electrode Material: Platinum electrode

• Temperature Compensation: None

Environmental and Process Conditions

• Operating Temperature Range: 0 to 105°C

• Pressure Range: 0 to 6.9 bar at 100°C

• Pressure in PSI: 0 to 100 psig at 212°F

• Flow Rate: 0 to 2 m/s

• Transmission Distance: 1000 meters (3280 feet)

The transmission distance requires the Hach Digital Gateway for full range. The DRC1R5N also needs a termination box and sc100 controller.

Mechanical and Material Specifications

• Body Material: PPS (Polyphenylene Sulfide)

• Electrode Material: Platinum

• Sensor Thread Size: 0.75 inch

• Cable Length: 5.5 meters (integral coaxial cable)

• Sensor Cable Type: Coaxial plus two conductors for temperature option

Wetted Materials

The HACH DRC1R5N uses the following wetted materials.

• PPS body

• PTFE double junction

• Glass with platinum electrode

• FKM or FPM O-rings

Special Notes on pH Applications

Most pH applications operate in the 2.5 to 12.5 pH range. General purpose pH glass electrodes perform well within this range. Some industrial applications need accurate measurement below pH 2. Others require control above pH 12. Consult Hach Technical Support for these extreme applications.

Installation Guide

Follow these steps to install the HACH DRC1R5N correctly.

1. Mount Sensor: Screw the 0.75 inch thread into a standard process fitting.

2. Connect Gateway: Attach the AD 1200 Digital Gateway to the sensor cable.

3. Run Extension Cable: Use the included 1m digital extension cable.

4. Connect to Controller: Wire the gateway to an sc100 controller.

5. Verify Transmission: Ensure total cable length stays within 1000 meters.

6. Calibrate Sensor: Use standard ORP calibration solutions for accuracy.

The DRC1R5N requires no temperature compensation for ORP measurement. Do not exceed 6.9 bar pressure or 105°C temperature. PPS body resists most chemical腐蚀 but check compatibility with your process.

Package List

The package includes the following physical items.

• HACH DRC1R5N analog ORP sensor (1 piece)

• AD 1200 Digital Gateway (1 piece)

• 1 meter digital extension cable (1 piece)

• Integral coaxial cable with 5.5m length (attached to sensor)

Note: The sc100 controller and termination box are sold separately. No calibration solutions are included in this package.

Frequently Asked Questions (FAQ)

1. What is the difference between pH and ORP measurement?
The HACH DRC1R5N measures ORP, not pH directly. ORP indicates a solution's oxidation or reduction potential in mV. pH measures acidity or alkalinity. This sensor uses a platinum electrode for ORP measurement. For pH measurement, you need a separate pH sensor.

2. Why does the DRC1R5N have no temperature compensation?
ORP measurement does not require temperature compensation. The DRC1R5N measures millivolts directly from the platinum electrode. Temperature affects pH measurement but not ORP values significantly. The two additional cable conductors can support a separate temperature compensator if needed.

3. How far can I transmit the signal from this sensor?
The HACH DRC1R5N transmits signals up to 1000 meters. You need the AD 1200 Digital Gateway included in this package. A termination box and sc100 controller are also required. Beyond 1000 meters, signal quality may degrade noticeably.

4. What is the maximum pressure for the DRC1R5N at lower temperatures?
The HACH DRC1R5N handles 6.9 bar at 100°C. At lower temperatures below 100°C, the pressure rating increases. Refer to Hach documentation for specific temperature-pressure curves. Do not exceed 100 psig at 212°F as specified.

5. Can I submerge the DRC1R5N completely in my process tank?
Yes, the HACH DRC1R5N has an IP-rated construction for immersion. The PPS body and FKM O-rings provide a watertight seal. Ensure the cable connection remains above liquid level. Thread sealing tape may be needed for pressurized applications.

6. How accurate is the DRC1R5N for high purity water applications?
The HACH DRC1R5N accuracy is ±20 mV limited by calibration solution. High purity water with very low ionic strength may cause unstable readings. Platinum electrodes require some conductivity for stable mV measurement. Use a special low-conductivity ORP sensor for pure water applications.

Related Accessories

Enhance your ORP measurement system with these compatible parts.

• Controller: Hach sc100 for signal processing and display

• Termination Box: Hach TB4 for secure cable connections

• Calibration Solution: Hach ORP standard 200 mV and 600 mV

• Mounting Fitting: Hach 1 inch or 2 inch immersion holder

• Extension Cable: Hach digital extension cable up to 1000m total

Always use genuine Hach accessories with the DRC1R5N. Third-party cables may cause signal loss or unreliable readings. Replace O-rings annually for high temperature applications above 80°C.