Condition:New – Open box

Core Specifications

• Model: DS-20 (Revision 2)

• Measurement Range: 0-50 PSU (Practical Salinity Units)

• Accuracy: ±0.1 PSU (0-40 PSU range)

• Resolution: 0.01 PSU

• Temperature Compensation: 0-50°C (automatic)

Measurement Principle

• Conductivity Cell: 4-electrode titanium sensor

• Cell Constant: 0.1 cm⁻¹

• Frequency: 3 kHz excitation

• Automatic Cleaning: Ultrasonic system (optional)

Electrical Specifications

• Power Supply: 24VDC ±10% or 100-240VAC 50/60Hz

• Current Consumption: 1.5A max @ 24VDC

• Output Signals:

  • 4-20mA (isolated)

  • RS-485 Modbus RTU

  • 2x SPDT relay alarms

Mechanical Construction

• Housing: 316L stainless steel (IP66/NEMA 4X)

• Process Connections:

  • 1/2″ NPT or Tri-Clamp

  • Max Pressure: 10 bar

• Dimensions: 200 x 150 x 100mm (without sensor)

• Weight: 2.5kg

Sensor Specifications

• Materials: Titanium electrodes, PEEK body

• Temperature Range: -5°C to +80°C (operating)

• Flow Rate: 0.3-3 m/s recommended

• Cable Length: 10m standard (extendable to 100m)

Performance Features

• Response Time: <5 seconds to 90% reading

• Calibration: 1-point or 2-point (NaCl solution)

• Self-Diagnostics: Electrode fouling detection

• Data Logging: 10,000 records (time-stamped)

Display & Interface

• Screen: Backlit LCD (128×64 pixels)

• User Interface: 5-button membrane keypad

• Menu Languages: 8 selectable

Certifications

• Marine: DNV-GL, ABS, LR

• Industrial: ATEX Zone 2 (optional)

• Standards: ASTM D1141, ISO 24801