Endress+Hauser CAS51D-AAC2A4 | Viomax UV SAC Nitrate Sensor, 15m Cable
Endress+Hauser CAS51D-AAC2A4 digital UV sensor. Measures SAC (0.5–250 1/m) & nitrate, Memosens technology, 15m fixed cable, IP68, for wastewater & drinking water.
Product Overview
The Endress+Hauser CAS51D-AAC2A4 is a digital UV photometric sensor from the Viomax CAS51D series. It measures Spectral Absorption Coefficient (SAC) and nitrate concentration in water and wastewater applications. Utilizing Memosens digital technology, it features a 15-meter fixed cable for direct connection to Liquiline transmitters, ensuring data integrity and simplified maintenance.
Technical Specifications (Measurement & Electrical)
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Parameter
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Specification
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Model / Ordering Code
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CAS51D-AAC2A4
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Measuring Principle
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UV Photometry (254 nm)
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Primary Measurands
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SAC (UV Absorption), Nitrate (NO₃)
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SAC Measuring Range
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0.5 ... 250 1/m
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Nitrate Range (approx.)
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0.4 ... 200 mg/l NO₃
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Technology
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Memosens (Digital, Inductive)
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Cable Specification
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Fixed Cable, 15 m Length
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Connection Type
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Crimp Sleeves (4-wire)
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Technical Specifications (Mechanical & Environmental)
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Parameter
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Specification
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Sensor Body Material
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Stainless Steel 316L
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Process Connection
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G1" / NPT ¾" Thread
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Immersion Length
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~388 mm
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Process Temperature
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+5 ... +50 °C
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Protection Rating
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IP68 (Submersible)
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Approvals / Area
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Non-Hazardous Area (C2)
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Mounting
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Immersion (Flexdip), Flow Cell
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Key Features
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Dual-Parameter UV Sensing: Provides reliable measurement of SAC (UV254) as a surrogate for COD/BOD/TOC and direct nitrate concentration, ideal for biological treatment monitoring.
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Memosens Digital Protocol: Contactless inductive connection prevents corrosion; stores calibration data and sensor diagnostics directly in the sensor head.
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Robust Deployment Ready: The 15-meter fixed cable eliminates the need for separate sensor cables, reducing installation points of failure in open-channel or tank applications.
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Low Maintenance Design: 316L stainless steel construction resists fouling and chemical attack in harsh wastewater environments.
Applications
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Wastewater Treatment: Monitoring of denitrification processes, effluent quality, and load measurement at inlet/outlet.
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Drinking Water: Surveillance of raw water quality and nitrate levels in municipal supplies.
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Surface Water: Environmental monitoring of rivers and lakes for organic pollution indicators.
About ACH
Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.
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Frequently Ask & Questions
Are preferential prices available?
Long-term brand partners can get competitive product prices. At the same time, ACH controls the profit per order to 5%, providing the most competitive prices.
Are the Products Genuine OEM Units?
Yes, all products from ACH are certified genuine OEM units. We acquire our inventory through official OEM channels and trusted third-party suppliers, ensuring every item is authentic and reliable.
How will you arrange shipment?
We'll handle the shipping for you. Through our partnerships, we can secure competitive rates with major carriers like FedEx, DHL, TNT, and UPS, ensuring a smooth and cost-effective delivery.
What is the warranty of goods?
One-year Warranty.
How long is the logistics cycle of the product?
Products are divided into spot and futures, and the delivery period of different brands of products is also different. For details, please contact the ACH business manager.
