Salinity Conductivity TDS Probe AT-SB-PROBE-S-P-C1

Datasheet

1. Introduction

"The SENSBLUE RS-485 Salinity Conductivity TDS Probe (AT-SB-PROBE-S-P-C1) introduces a new generation of four-electrode conductivity sensor, adopts international leading four-electrode technology, RS485 digital interface, supports MODBUS protocol, and environmentally friendly design. Compared with the traditional two-electrode conductivity sensor, it has higher accuracy, wider measurement range and excellent stability. The four-electrode conductivity sensor also has a unique advantage in quantity: one is to completely solve the polarization problem in high conductivity test; the other is to solve the problem of inaccurate reading caused by electrode contamination.

2. Features

• Simultaneous output of conductivity, salinity, TDS, and temperature parameters;
• Corrosion-resistant housing with IP68 waterproof rating for long-term underwater operation;
• Built-in temperature sensor with automatic temperature compensation;
• Factory-calibrated with built-in calibration parameters for immediate installation and use

3. Technical Specifications

Model	KWS-300A	KWS-300B
Conductivity Range	0-200mS/cm (0-2mS/cm, 2-20mS/cm, 20-200mS/cm)
Accuracy	±1% or 0.01mS/cm (which is bigger)
Salinity Range	0 -175 ppt
Accuracy	±1 ppt
TDS Range	0 – 128000 mg/L
Response Time	＜10s
Ip Grade	IP68
Max. Pressure	6 bar
Sheath Material	Titanium
Operating Temperature	0~50℃ (no freezing)
Output	RS485, Modbus
Power Consumption	0.2W (Recommended power supply: DC 9–24V, >500mA)
Sensor Dimension	φ22mm*175.5mm	φ22mm*165.8mm
Assembly	NPT3/4 male thread	Connect with multi-parameter host
Cable Length	10 meters (default), customizable	None
Calibration	support one point or two-points calibration
Casing Material	Titanium + PEEK

Note:

The above technical specifications are based on laboratory standard solution conditions;

Sensor lifespan and calibration/maintenance frequency depend on actual site conditions.

4. Dimensions and Wiring