Water Sensor
RK500-07 (Liquid cooling) Turbidity Sensor
PRODUCT DESCRIPTION
RK500-07LC Liquid Cooling Turbidity Sensor is designed for continuous, real-time monitoring of coolant cleanliness in liquid cooling systems. In data centers, EV cooling systems and high-end manufacturing applications, suspended particles, corrosion products and other impurities can affect heat transfer efficiency, contribute to pipeline blockage and increase the risk of component failure. By monitoring turbidity, the RK500-07LC helps operators detect changes in coolant quality and maintain stable system operation.
Based on the 90° nephelometric method, the sensor measures turbidity by detecting light scattering and absorption caused by suspended impurities in the coolant. It provides measurement ranges of 0–10 NTU or 0–100 NTU, with 0.1 NTU resolution and accuracy of ±2% rdg. or ±0.1 NTU, whichever is greater. The sensor supports simultaneous 4–20 mA and RS485 outputs, with a response time of 1 second, making it suitable for integration with CDU control systems, PLCs and other industrial monitoring platforms.
The RK500-07LC features an overall 316L stainless steel construction, sapphire measurement window, compact integrated design and IP68 probe protection. It supports deionized water, PG25, EG25 and other coolants, with process connection options including G3/4, NPT3/4 and 50.5 chuck, as well as M16 connector or direct-line cable configurations. With pressure resistance up to 1 MPa (10 Bar), it is well suited for liquid cooling loops requiring durable, reliable and easy-to-integrate turbidity monitoring.
SPECIFICATIONS
Item | Technical Specification | ||
Measuring principle | 90 ° Nephelometric Method | ||
Main material | 316L | ||
Applicable medium | Deionized water, PG25,EG25 | ||
O-ring material | EPDM | ||
Process connection | G3/4 | Upper and lower NPT3/4 threads | 50.5 Chuck |
Sealing method | End face seal | Thread seal | Gasket |
Cable | M16 connector , Direct line | ||
Accuracy | ± 2% rdg. or ± 0.1NTU, whichever is greater | ||
Resolution | 0.1NTU | ||
Power consumption | <0.2W | ||
Operating temperature | 0-+60℃ | ||
Range | 0-10NTU ,0-100NTU | ||
Supply | 7-30VDC | ||
Output | 4-20mA&RS485 at the same time | ||
Response time | 1s | ||
Pressure resistance | 1MPa(10Bar) | ||
Ingress protection(probe) | IP68 | ||
Storage | 10-60℃@20%-90%RH | ||
Cable length | 5m default, other cable lengths can be customized | ||
RK500-13 (Liquid cooling) EC Sensor-M16 connector
PRODUCT DESCRIPTION
With the explosive growth of AI computing, new energy vehicles, and high-end manufacturing industries, liquid cooling technology has become the industry-standard thermal management solution for high-heat-density equipment. However, long-term high-load operation inevitably introduces impurities into cooling fluids, causing a gradual increase in electrical conductivity. Unmonitored conductivity exceeding safety thresholds can lead to catastrophic server short circuits, entire cabinet failures, and massive financial losses for enterprises. In new energy battery production and precision machining, abnormal coolant conductivity fluctuations can also compromise machining accuracy, damage equipment, and cause costly production delays.
The RK500-13LC Liquid Cooling EC Sensor is engineered specifically to address these critical challenges. Utilizing advanced anti-polarization and electromagnetic isolation technology, it delivers accurate and stable conductivity measurements even in complex industrial electromagnetic environments. Its robust 316L stainless steel construction and compatibility with all major liquid cooling media (including deionized water, PG25, and EG25) make it the ideal choice for ensuring the safe and reliable operation of modern liquid cooling systems.
SPECIFICATIONS
Item | Technical Specification | ||
Main material | 316L | ||
Applicable medium | Deionized water, PG25,EG25 | ||
O-ring material | EPDM | ||
Process connection | Upper:G3/4 | Upper and lower NPT3/4 threads | 50.5 Chuck |
Sealing method | End face seal | Thread seal | Gasket |
Cable | M16 connector,Direct line | ||
Accuracy | ±1%FS@0-5000μS/cm,25℃ | ||
Resolution | 1μS/cm | ||
Power consumption | <0.2W | ||
Operating temperature | 0-+60℃ | ||
Temp. compensation | Thermal resistance | ||
Range | 0-20μS/cm, 0-200μS/cm,0-2000μS/cm,0-5000μS/cm (0-10000μS/cm can be customized) | ||
Supply | 7-30VDC | ||
Output | 4-20mA&RS485 at the same time | ||
Response time | 1s | ||
Pressure resistance | 1MPa(10Bar) | ||
Ingress protection(probe) | IP68 | ||
Storage | 10-60℃@20%-90%RH | ||
Cable length | 5m default, other cable lengths can be customized | ||
RK500-06LC (Liquid cooling) ORP Sensor-M16 connector
PRODUCT DESCRIPTION
With the rapid development of data centers, new energy vehicles, high-end manufacturing and other fields, liquid cooling technology has gradually become the mainstream heat dissipation solution for high-density equipment due to its efficient heat dissipation capability.
However, the stable operation of liquid cooling systems is highly dependent on the cleanliness of the coolant. If particulate matter, corrosion products, microbial impurities, etc. are mixed into the coolant, it will not only reduce the heat dissipation efficiency, but may also block pipelines, corrode equipment components, and cause system failures or even shutdown accidents.
Core Monitoring Indicator: Oxidation-Reduction Potential (ORP)
ORP (Oxidation-Reduction Potential) reflects the oxidation-reduction characteristics of the coolant, and once its value deviates from the normal range, it will cause a series of chain problems. Excessive oxidation can accelerate the corrosion of metal components such as pipelines and server components, causing equipment damage and leakage risks.
RK500-06LC ORP Sensor: Accurate & Reliable Monitoring
The 500-06LC ORP sensor adopts advanced glass platinum electrode technology, combined with high-precision signal processing chips, to achieve accurate measurement of ORP values. It can keenly capture subtle changes in coolant ORP values.
Both oxidizing and reducing environments can provide accurate and stable monitoring data, providing a reliable basis for the evaluation of the operating status of liquid cooling systems.
SPECIFICATIONS
Item | Technical Specification | ||
Main material | 316L+ Titanium alloy | ||
Applicable medium① | Deionized water, PG25,EG25 | ||
O-ring material | EPDM | ||
Process connection | Upper:G3/4 | Upper and lower NPT3/4 threads | 50.5 Chuck |
Sealing method | End face seal | Thread seal | Gasket |
Cable | M16 connector , Direct line | ||
Accuracy | ±1mV | ||
Resolution | 0.1mV | ||
Power consumption | <0.2W | ||
Operating temperature | 0-+60℃ | ||
Range | -1500~+1500mV | ||
Supply | 7-30VDC | ||
Output | 4-20mA&RS485 at the same time | ||
Response time | 14 seconds (98% flowing liquid) | ||
Pressure resistance | 1MPa(10Bar) | ||
Ingress protection(probe) | IP68 | ||
Storage | 10-60℃@20%-90%RH | ||
Cable length | 5m default, other cable lengths can be customized | ||
RK500-12 (Liquid cooling) pH Sensor-M16 connector
PRODUCT DESCRIPTION
RK500-12 Liquid Cooling pH Sensor:In the era of high-density computing, liquid cooling systems have become the core infrastructure of data centers and supercomputing centers. And the pH value of the coolant is precisely the key indicator that determines whether a liquid cooling system can operate reliably over the long term.
pH imbalance triggers a chain reaction: corroding heat exchange plates, clogging cooling pipelines, reducing heat dissipation efficiency, and ultimately causing server overheating and downtime, resulting in huge economic losses. The RK500-12 liquid cooling pH sensor is designed for harsh liquid cooling environments, providing you with 24/7, high-precision pH monitoring protection.
Precise Measurement: Advanced glass electrode technology sensitively captures subtle changes at the 0.01 pH level
Stable & Reliable: Corrosion-resistant structural design adapts to various coolant media
Real-time Early Warning: Continuous online monitoring detects abnormal pH trends in advance
Easy Integration: Supports multiple industrial communication protocols and seamlessly integrates into existing monitoring systems
Choose the RK500-12(Liquid cooling) pH Senso to keep your liquid cooling systems free from pH imbalance risks and achieve safe, efficient, and low-cost operation.
SPECIFICATIONS
Item | Technical Specification | ||
Main material | 316L+ Titanium alloy | ||
Applicable medium① | Deionized water, PG25,EG25 | ||
O-ring material | EPDM | ||
Process connection | Upper:G3/4 | Upper and lower NPT3/4 threads | 50.5 Chuck |
Sealing method | End face seal | Thread seal | Gasket |
Cable | M16 connector , Direct line | ||
Accuracy | ±0.1pH@25℃ | ||
Resolution | 0.01pH | ||
Power consumption | <0.2W | ||
Operating temperature | 0-+60℃ | ||
Temp. compensation | Thermal resistance | ||
Range | 0-14pH | ||
Supply | 7-30VDC | ||
Output | 4-20mA&RS485 at the same time | ||
Response time | 10 seconds (98% flowing liquid) | ||
Pressure resistance | 1MPa(10Bar) | ||
Ingress protection(probe) | IP68 | ||
Storage | 10-60℃@20%-90%RH | ||
Cable length | 5m default, other cable lengths can be customized | ||
RK500-09 Multi-parameter water quality sensor
PRODUCT DESCRIPTION
RK500-09 multi-parameter water quality sensor features an integrated design and can simultaneously measure multiple water quality parameters. You can choose DO, pH, ORP, EC/salinity, turbidity, etc. Using RS-485 output, Modbus-RTU communication protocol, data can be directly transmitted to the acquisition platform.
The multi-parameter water quality sensor is equipped with an automatic cleaning device, automatic cleaning interval time and number of automatic cleaning cycles can be set to adapt to the water quality of different degrees of cleanliness. The automatic cleaning device can effectively clean the surface of the sensor, prevent the adhesion of microorganisms, and greatly reduce the maintenance cost. Each sensor is equipped with a quick-plug waterproof connector, which is easy to disassemble and assemble.
The sensor protection cover at the front is used to protect the internal sensor from damage. There are slots around the protection cover, which can effectively prevent large suspended particles and biological damage to the sensor probe, while not affecting the accuracy of measurement.
Why Choose the RK500-09?
- All-in-One Integration: Replace scattered probes with a single water parameter sensor powerhouse.
- Weather-Resistant Design: Built for outdoor extremes—rain, humidity, or temperature swings.
- Scalable Insights: From single-point checks to ecosystem-wide monitoring.
If you are looking for professional sensors to measure water quality, it will be the great choice.
System unit
Dissolved oxygen Sensor | ||
Measuring range | 0～20mg/L | |
Resolution | ±0.4mg/L or ±2% | |
Accuracy | 0.01mg/L | |
Measuring range | 0～100NTU | 0～1000NTU |
Resolution | ±3% or ±2NTU | ±5% or ±3NTU |
Accuracy | 0.1NTU | |
EC Sensor | ||
Measuring range | 0～5000μS/cm | 0～200mS/cm |
Resolution | 1μS/cm | 0.1mS/cm |
Accuracy | ±1.5% F.S. | |
Salinity Sensor | ||
Measuring range | 0～70PSU | |
Resolution | 0.1PSU | |
Accuracy | ±1.5% F.S. | |
TDS Sensor | ||
Measuring range | 0～100.00mg/L | 0～1000.0mg/L |
Resolution | 0.01mg/L | 0.1mg/L |
Accuracy | ±10% or ±1mg/L | |
Measuring range | 0～14pH | |
Accuracy | ±0.1pH | |
Resolution | 0.01pH | |
ORP Sensor | ||
Measuring range | -1500mV～+1500mV | |
Accuracy | ±6mV | |
Resolution | 1mV | |
Chlorophyll Sensor | ||
Measuring range | 0-400ug/L | |
Accuracy | ±3% | |
Resolution | 0.1mg/L | |
Cyanobacteria Sensor | ||
Measuring range | 0-300Kcells/L | |
Accuracy | ±3% | |
Resolution | 0.1Kcells/L | |
Temperature | ||
Measuring range | 0～50℃ | |
Accuracy | ±0.3℃ | |
Resolution | 0.1℃ | |
Other Information of Multi-parameter Sensor | ||
Output | RS485(Modbus/RTU) | |
Cleaning method | Automatic cleaning | |
Power consumption | ||
Power supply | 12VDC±5% | |
Installation method | Submerged installation | |
Shell material | POM and 316L, default POM | |
Cable length | 5m(default), other lengths can be customized | |
RK500-04 Type-B Dissolved Oxygen(DO) Sensor
PRODUCT DESCRIPTION
RK500-04 Dissolved Oxygen(DO) Sensor design based on the principle of fluorescence and high performance through oxygen membrane, with short response time, measurement accuracy, stable performance, etc. It is a excellent device designed to deliver accurate, reliable, and real-time measurements of oxygen levels in aquatic environments. The water dissolved oxygen sensor can be widely used in chemical fertilizer, metallurgy, environmental protection water treatment engineering, pharmaceutical, biochemical, food, aquaculture and water such as continuous monitoring of dissolved oxygen in the solution.
System unit
Technical Parameter | ||
Type | 500-04 Type-B | |
Performance Edition | ||
Application | Industrial control, general sewage, environmental | |
Sensor | DO | Temperature |
Range | 0-20mg/L | 0-60℃ |
Accuracy | 0.2mg/L | ±0.5℃ |
Resolution | 0.01mg/L | 0.1℃ |
Repeatability | 0.05mg/L | |
Response time | T90<40S | |
Stability | Drift <0.2mg/L/year | |
Material | All stainless steel 316L | |
Principle | Fluorescent | |
Temperature compensation | Thermal resistance | |
Thread | Lower: NPT3/4,Upper:NPT3/4 | |
Installation method | Pipe or dip (IP68) | |
Operating temperature | -5 – +60℃ | |
Working pressure | 0.8Mpa | |
Supply | 7-30VDC | |
Power consumption | <0.2W | |
Output | RS485 & 4-20mA at the same time | |
Ingress protection | IP68 | |
Cable length | 5m default, other length customizable | |
Weight(probe) | 0.7kg | |
Storage | -20 – +80℃ | |
RK500-13 Type-B Online Electrical Conductivity （EC）Sensor
PRODUCT DESCRIPTION
RK500-13 EC Sensor uses advanced anti-polarization technology, internal signal isolation technology, and have strong anti-interference ability. Stable measurement, accurate, maintenance-free, easy to install. It achieves exceptional data quality with an accuracy of ±1%FS and a rapid 1-second response time, ensuring you capture real-time changes in water quality. The EC conductivity meter is mainly used in aquaculture, water source testing, sewage treatment, environmental monitoring and so on.
SPECIFICATIONS
Technical Parameter | |
Type | RK500-13-B |
Conventional type | |
Main material | Nylon fiber+316 |
Screw thread | Bottom : NPT3/4 |
Pressure | 1.0MPa |
Temperature | Automatic (Temperature 0-60℃) |
Output signal | 4-20mA & RS485 at the same time |
Supply | 7-30VDC |
Range EC | 0～2000μs/cm, 0～5000μs/cm, |
Accuracy | ±1%FS |
Resolution | 0.01mS/cm |
Power consumption | <0.2W |
Principle | Frequency conversion method |
Response time | 1s |
Drift | ≤0.3%FS/24h |
Measurement environment | 0-60℃(High temperature electrodes can be customized) |
Ingress protection | IP68 |
Storage | 10-60℃@20%-90%RH |
Cable length | 5m default, other length customizable |
Application | General freshwater testing, high pressure-resistant environment |
