Hach 1720D/1720E Turbidimeter: Complete Guide to Water Quality Monitoring Systems
Hach 1720D/1720E Turbidimeter: Advanced Water Quality Monitoring Solutions
Professional-grade turbidity measurement instruments for industrial and municipal water treatment applications
Hach 1720D/1720E Turbidimeter Operation and Maintenance Video
Product Overview
The Hach 1720D and 1720E turbidimeters represent the pinnacle of water quality monitoring technology, designed specifically for continuous online turbidity measurement in drinking water treatment plants, wastewater facilities, and industrial process control applications. These instruments utilize advanced nephelometric measurement principles to provide accurate, reliable turbidity readings essential for regulatory compliance and process optimization.
Replacement Parts Available: For genuine Hach 1720D/1720E replacement components including the essential turbidimeter lamp bulb, visit our official product page: Hach 1720D/1720E Turbidimeter Lamp Bulb (Part #1895000)
Key Features and Technical Specifications
| Specification | 1720D Model | 1720E Model |
|---|---|---|
| Measurement Range | 0-100 NTU (standard) 0-1000 NTU (extended) | 0-100 NTU (standard) 0-1000 NTU (extended) |
| Accuracy | ±2% of reading or ±0.02 NTU | ±2% of reading or ±0.02 NTU |
| Resolution | 0.001 NTU (0-1 NTU) 0.01 NTU (1-100 NTU) | 0.001 NTU (0-1 NTU) 0.01 NTU (1-100 NTU) |
| Light Source | Tungsten lamp (6.5V, 1630 type) | Tungsten lamp (6.5V, 1630 type) |
| Detection Method | 90° nephelometric | 90° nephelometric |
| Output Signals | 4-20 mA, RS-232/485 | 4-20 mA, RS-232/485, Ethernet |
| Calibration | Automatic and manual | Automatic and manual with data logging |
| Enclosure Rating | NEMA 4X (IP66) | NEMA 4X (IP66) |
| Power Requirements | 100-240 VAC, 50/60 Hz | 100-240 VAC, 50/60 Hz |
Applications and Industry Use Cases
Drinking Water Treatment
The Hach 1720D/1720E turbidimeters are extensively used in municipal drinking water treatment plants for monitoring filter performance, detecting breakthrough events, and ensuring compliance with regulatory standards such as the US EPA Surface Water Treatment Rule. These instruments provide continuous monitoring at critical control points throughout the treatment process.
Wastewater Treatment
In wastewater treatment facilities, these turbidimeters monitor effluent quality, optimize chemical dosing for coagulation and flocculation processes, and ensure discharge compliance. The robust design withstands challenging wastewater environments while maintaining measurement accuracy.
Industrial Process Control
Various industries including pharmaceuticals, food and beverage, power generation, and semiconductor manufacturing utilize the 1720D/1720E for process water quality monitoring, cooling tower blowdown control, and ultrapure water system protection.
Maintenance Tip: Regular lamp replacement is crucial for maintaining measurement accuracy. Source your genuine replacement bulbs from our trusted supplier: Hach 1720D/1720E Replacement Lamp Bulb
Installation and Maintenance Guidelines
Proper Installation Requirements
- Install in a location with stable temperature and minimal vibration
- Ensure proper sample flow rate (typically 200-500 mL/min)
- Maintain appropriate sample pressure (10-30 psi recommended)
- Install air bubble trap upstream of the instrument
- Provide adequate electrical grounding and surge protection
Routine Maintenance Procedures
- Weekly: Visual inspection and cleaning of sample cell
- Monthly: Calibration verification with standards
- Quarterly: Complete calibration and performance verification
- Annually: Lamp replacement and comprehensive maintenance
- As needed: Replacement of seals and O-rings
Measurement Accuracy
Global Installations
Years in Service
Continuous Operation
Frequently Asked Questions (FAQ)
A: The primary difference lies in communication capabilities. The 1720E includes enhanced networking features with Ethernet connectivity and advanced data logging capabilities, while the 1720D provides standard RS-232/485 communication. Both models share identical measurement technology and accuracy specifications.
A: The tungsten lamp bulb (part #1895000) typically requires replacement every 6-12 months depending on usage intensity and operating conditions. Regular replacement ensures optimal measurement accuracy and prevents false readings. You can purchase genuine replacement bulbs from our authorized supplier at https://koeed.com/products/hach-1895000-1720d-1720e-turbidimeter-lamp-bulb-1630-6-5v-turbidity-meter-light.
A: These instruments require primary turbidity standards traceable to NIST (National Institute of Standards and Technology). Hach recommends using StablCal® stabilized formazin standards or AMCO-AEPA-1 styrene divinylbenzene polymer standards for calibration and verification.
A: Yes, both models offer multiple communication options including 4-20 mA analog output and digital communication protocols (RS-232/485 for 1720D, plus Ethernet for 1720E) that enable seamless integration with most SCADA, DCS, and PLC systems commonly used in industrial automation.
A: Regular maintenance includes monthly cleaning of the sample cell, quarterly calibration verification, and annual replacement of critical components including the lamp bulb. Proper maintenance ensures compliance with regulatory requirements and maintains measurement accuracy. For replacement parts, visit our authorized parts supplier.
Industry Recognition and Compliance
Regulatory Compliance
- US EPA Method 180.1 compliant
- ISO 7027:1999 compliant
- CE marked for European markets
- Meets requirements of the Safe Drinking Water Act
- Approved for use in NSF/ANSI Standard 61 certified systems
Final Note: For all your Hach 1720D/1720E maintenance needs, including the essential replacement lamp bulb (part #1895000), trust our reliable supplier: Purchase Hach 1720D/1720E Replacement Parts Here
Conclusion
The Hach 1720D and 1720E turbidimeters represent proven technology for critical water quality monitoring applications. With their robust construction, precise measurement capabilities, and regulatory compliance features, these instruments provide water treatment professionals with reliable data for process control and regulatory reporting. Regular maintenance with genuine replacement parts, particularly the essential lamp bulb available at https://koeed.com/products/hach-1895000-1720d-1720e-turbidimeter-lamp-bulb-1630-6-5v-turbidity-meter-light, ensures continued optimal performance and measurement accuracy.
