High Precision Water Quality Chroma Probe Digital RS485 Online Colorimetric Sensor
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Product Highlights
- Platinum Cobalt Standard Colorimetry: Ensures high efficiency, fast measurement, and superior repeatability for water quality analysis.
- Self-Cleaning Brush Technology: Automatically eliminates oil influence and suspended solids to maintain measurement accuracy.
- IP68 Waterproof Protection: Provides robust protection against dust and water immersion for reliable outdoor operation.
- RS485 & 4-20mA Dual Output: Supports Modbus RTU protocol and isolated current output for flexible industrial integration.
- Real-Time Online Monitoring: Enables 7*24 hours continuous measurement for immediate water quality data acquisition.
- Ambient Light Filtering: Unique optical and electronic techniques eliminate interference from surrounding light sources.
- Wide Measuring Range: Covers 0-500 PCU with 0.01 PCU resolution for precise colorimetric analysis.
- Durable SS 316 & ABS Construction: High-grade materials ensure long-term stability in harsh chemical and industrial environments.
Product Attributes
- Customization
- Available
- After-sales Service
- Maintenance & Refund
- Warranty
- Maintenance & Refund
- Model NO.
- HG-Chro Digital Chroma Sensor
- Display
- Digital
- Portable
- Non Portable
- Appliance
- Food Analysis, Medical Research, Biochemistry
- Certification
- ISO9001, RoHS, CE, FCC
- Measuring Range
- 0-100pcu
- Accuracy
- ±5% F.S.
- Temperature Range
- 0...60 Deg.C
- Response Time
- 90% Less Than 90 Seconds
- Pressure Range
- 0-1 Bar
- Shell Material
- Ss 316 & ABS
- Output
- RS 485, 4-20mA
- Power Supply
- DC 9-30V
- Pipe Thread
- G 3/4" , M39*1.5
- Cable Length
- 5m or Customized
- Protection
- IP68
- Brand
- Siko Sensors
- Product Name
- Online Digital Chroma Sensor
- Measuring Principle
- Platinum Cobalt Standard Colorimetry
- Item
- Platinum Cobalt Colorimeter
- Transport Package
- 2kg
- Specification
- 20*15*15cm
- Trademark
- Siko Instruments
- Origin
- China
- HS Code
- 9025191010
- Production Capacity
- 999 Units / Weeks
- Package Size
- 15.00cm * 15.00cm * 10.00cm
- Package Gross Weight
- 1.000kg
- Lead Time
-
5 days (1 - 2 Pieces)
7 days (3 - 9 Pieces)
To be negotiated ( > 9 Pieces)
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
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Product Description
2) Power Supply DC 9-30V & 4-20mA Output Signal.
3) Support RS-485 Mod_Bus RTU Protocol.
4) IP68 Protection WaterProof & Quick Response & High Precision.
5) 7*24 Hours Continuous Measuring.
6) Easy Installation And Easy Operation.
7) With Automatic Cleaning Brush To Eliminate The Impact Of Oil On The Measurement.







Place OF Origin | HeFei City China |
Warranty | 1 Year |
Customized Support | OEM ODM |
Brand Name | Siko Sensors |
Model Number | HG-Chro Online Digital Chroma Sensor |
Product Name | Platinum Cobalt Colorimeter for Water Treatment |
Measuring Range | 0-100PCU |
Accuracy | 5% F.S. |
Response Time | RS485 / 4-20mA / Relay |
Process Pressure | 0-3 Bar |
Process Temperature | 0-60 Deg.C |
Material | SS 316 & POM |
Protection Grade | IP65 / IP68 |












Functions | Digital Chromaticity Sensor | Measuring Range | 0-500PCU |
Resolution | 0.01 PCU | Accuracy | ±5.0%F.S or 10 PCU |
Temp. Compensation | Pt 1000 / NTC10K | Temp. Range | 0.0 - 60.0 Deg.C |
Temp. Compensation Range | 0.0 - 60.0 Deg.C | Temp. Resolution | 0.1ºC |
Temp. Accuracy | ±0.2ºC | Calibration Method | Two-Point Calibration |
Ambient Temperature Range | 0 - +70ºC | Storage Temp. | -20 - +70ºC |
Display | Back Light Dot Matrix | EC Current Output 1 | Isolated 4-20mA Output (Max. Load 500Ω) |
Current Output Accuracy | ±0.05 mA | Temp. Current Output 2 | Isolated 4-20mA Output (Max. Load 500Ω) |
RS485 Protocol | Mod_Bus RTU Protocol | Baud Rate | 9600/19200/38400 |
Maximum Relay Contacts Capacity | 5A / 250VAC / 5A / 30VDC | Cleaning Setting | ON: 1 to 1000 Seconds OFF: 0.1 to 1000.0 Hours |
One Multi Function Relay | Clean / Period Alarm / Error Alarm | Relay Delay | 0-120 Seconds |
Data Logging Capacity | 500000 | Language Selection | English Chinese Spainsh |
Power Supply | AC 90 - 260 V (Power Consumption < 7W) | Installation | Panel / Wall / Pipe Installation |

About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASI239091". Items marked "" are certified.
Company Profile
HeFei Siko Instruments Co, . Ltd. Is a high-tech enterprise commit into research and development, manufacture of flow instruments, level instruments, pressure instruments, temperature instruments. Located at HeFei City, China, we have full access to gain the most advanced technology in field. All these make us full of confidence to provide products with international standard. At present, we are mainly dealing in gear flow meter electromagnetic flow meters, vortex flow meters, turbine flow meters, ultrasonic flow meters, level sensors, pressure sensors, temperature sensors etc. We are Original Equipment manufacturer of flow meters with well-equipped testing facilities and strong technical force. With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in water supply and drainage, chemical, power supply, metallurgical mine, oil and other industries.
Our products are widely recognized and trusted by users and can meet continuously changing economic and social needs. Welcome new and old customers from all walks of life to contact us for future business relationships and mutual success.
HeFei Siko Instruments Co, . Ltd, is a supplier of Gear Metering Pump, Micro Gear Flow Meter, Turbine Flow Meter, Vortex Flow Meter, Pressure Transmitters, Level Transmitters, Temperature Transmitters...etc industrial process and control instruments.
We have exported more than 100 countries like USA, Mexico, Canada, Spain, Russia, Singapore, Thailand, etc, and have established long-term and stable cooperative relations with many retailers and distributors at home and aboard.
01. We have engaged in flow meter, gear pump, liquid level meter, pressure sensor, temperature transmitter and other products for many years.
02. We have established long-term and stable cooperative relations with many retailers and distributors at home and aboard.
03. Hydraulic components, flow measurement technology, permanent magnet systems and pump technology - in one expansive group, Siko Instruments brings together a comprehensive product portfolio for fluid, drive, measurement and process engineering.
About Our Factory & Business Background
- Address
- Room 1311, 3f, Tianlong Plaza, Heyedi Street, Shushan District, Hefei, Anhui, China
- Average Lead Time
- Peak Season Lead Time, within 15 workdays, Off Season Lead Time, one month
Our Production Capability & Technical Expertise
Our Industry Experience & Global Business Record
- Main Markets
- North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
FAQ
- What is the warranty period for this sensor?
- We provide a 1-year warranty covering maintenance and refund services.
- Can the cable length be customized?
- Yes, the standard cable length is 5 meters, but customized lengths are available upon request.
- What is the measuring principle used?
- The sensor adopts the Platinum Cobalt Standard Colorimetry principle for high accuracy.
- Is OEM or ODM support available?
- Yes, we offer full OEM and ODM customized support for this product.
- What is the response time of the sensor?
- The sensor achieves 90% response in less than 90 seconds for quick results.
- What certifications does the product hold?
- The product is certified with ISO9001, RoHS, CE, and FCC standards.
- What is the maximum pressure range?
- The sensor supports a pressure range of 0-3 Bar.
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