Endress+Hauser COM253-DX0005 | Liquisys DO Transmitter, 4-20mA HART, Wall Mount
Endress+Hauser COM253-DX0005 single-channel DO transmitter for COS41/COS61 sensors. 100-230V AC, 4-20mA HART output, IP65 wall-mount housing.
Product Overview
The Endress+Hauser COM253-DX0005 is a single-channel, wall-mount transmitter from the Liquisys COM253 series for dissolved oxygen (DO) measurement. Designed for water, wastewater, and aquaculture applications, it features a graphical LCD, supports both analog and Memosens digital DO sensors (like COS41/COS61), and provides a 4-20mA HART output for integration into process control systems.
Technical Specifications (Electrical & Functional)
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Parameter
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Specification
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Model / Order Code
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COM253-DX0005
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Product Family
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Liquisys COM253
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Power Supply
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100–230 V AC, 50/60 Hz
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Analog Output
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1x 4–20 mA with HART protocol
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Relay Outputs
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None (basic version)
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Sensor Input
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1 channel (supports analog & Memosens digital)
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Display
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Graphical LCD with backlight
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Technical Specifications (Mechanical & Environmental)
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Parameter
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Specification
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Housing Material
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PC+ABS (plastic)
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Protection Rating
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IP65 / IP66 (NEMA 4X)
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Cable Entry
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M20×1.5
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Dimensions (H×W×D)
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247 × 170 × 115 mm
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Ambient Temperature
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-20 ... +55 °C
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Mounting
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Wall Mount
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Certifications
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CSA General Purpose
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Key Features
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Dual Sensor Support: Compatible with both traditional analog (e.g., COS41-2F) and advanced Memosens digital DO sensors (e.g., COS61), offering flexibility in sensor selection and future upgrades.
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Process Diagnostics: Features continuous sensor and process monitoring with plausibility checks, providing early warnings for sensor failure or process deviations.
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Easy Calibration: Simplified one-point calibration procedure (in air or saturated water) guided by the graphical display, reducing maintenance time.
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Modular Platform: The COM253 base platform allows for optional expansion with relay modules or additional communication cards if future needs change.
Applications
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Wastewater Aeration Control: Precise DO monitoring in activated sludge basins to optimize blower energy consumption.
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Surface Water Monitoring: Environmental monitoring of dissolved oxygen in rivers, lakes, and reservoirs.
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Aquaculture & Fish Farming: Maintaining optimal oxygen levels in fish ponds and hatchery tanks.
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Drinking & Process Water: Quality control in potable water treatment and industrial process water systems.
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.
