Principle of Operation:
The DRB200 COD Digester (Smart Digester) uses a heating module and preset heating programs to heat and digest water samples such as COD, TOC, total phosphorus, and total nitrogen for different prepared reagents.
Industries of Application:
The DRB200 COD Digester (Smart Digester) can be used in industrial, municipal, environmental protection, university research, and other fields for the heating and digestion of water samples such as COD, TOC, total phosphorus, and total nitrogen.
Instrument Features:
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The DRB200 COD Digester offers selectable digestion temperature and time: adjustable temperature range 37℃ -165℃, adjustable time range approximately 1-480 minutes.
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The DRB200 COD Digester features a fully insulated module design, allowing separate setting of digestion temperature and time, and simultaneous digestion reactions in two independent heating control modules.
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The DRB200 COD Digester is equipped with multiple heating bore sizes to accommodate different types of prepared reagents for the digestion of water samples such as COD, TOC, total phosphorus, and total nitrogen.
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The DRB200 COD Digester has built-in digestion programs that users can select with one touch, eliminating the complexity of manual settings and possible errors.
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The COD Smart Digester is equipped with a digital timer that can automatically cut off and alarm, providing high reliability.
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The DRB200 COD Digester features an isolated locking design, equipped with a transparent protective cover and anti-overheating safety device.
Technical Specifications
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Specification Detailed Information
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Dimensions 25×14.5×31 cm (9.8×5.7×12.2 inches)
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Weight Single heating zone: 2 kg (4.4 lb)
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Dual heating zone: 2.8 kg (6.17 lb)
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Power requirements 100-240V,+5%/-15%,50/60Hz,Protection Class Ⅰ
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Power input Single heating zone: 115V: 300VA: 230V: 450VA
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Dual heating zone: 115V: 600VA: 230V: 900VA
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Storage temperature -40 to +60℃ (-40 to +140°F)
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Operating temperature 10 to 45℃ (50 to 113°F)
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Operating humidity 90% (non-condensing)
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Instrument range Temperature: 37 to 165℃ (98.6 to 329°F)
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Timer: 0 to 480 minutes approx.
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Temperature stability ±2℃ (±3.5°F)
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Heating rate From 20 to 150℃ (68 to 302°F) takes approximately 10 minutes
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Certifications CE, GS, and cTUVus
Accessory Information
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28958-05 Converts 16mm bore to 13mm bore for digesting TNTplus prepared reagents
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HHA155 Converts 20mm bore to 16mm bore
Ordering Guide
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Order No. Number of Heating Blocks Number of 13mm Bores Number of 16mm Bores Number of 20mm Bores
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LTV082.80.30001 1 / 9 2
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LTV082.80.40001 1 / 15 /
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LTV082.80.42001 2 / 21 4
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LTV082.80.44001 2 / 30 /
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DRB200-05 1 9 / 2
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DRB200-06 2 21 / 4
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DRB200-07 2 30 / /
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DRB200-08 2 12 / 8
Source: Public information from the HACH Water Quality website
Case Studies
Municipal Wastewater Treatment · Hach-lab — Application Case
Project Overview
The site is the inlet, biological and outlet stages of a municipal plant. The customer wanted Hach-lab properly configured on the existing plant, with the aim of laboratory colorimetric and titrimetric water analysis.
Technical Challenges
What actually causes trouble is high solids and corrosive fractions, with large diurnal flow swings, and effluent parameters drift and probes foul with sludge and biofilm. All of this means the Hach-lab configuration has to involve selected by method standard, sample throughput and reagent kit.
Configuration
Supply and installation were organised through the laboratory line: configuring around lab method standards and sample throughput. On site this meant selected by method standard, sample throughput and reagent kit, checked line by line against: stable compliance with Grade 1A discharge limits and online data reporting.
Performance
After commissioning the outcome is standardised methods that make data comparable between labs, and the readings are now used for process tuning.
Food & Beverage · Hach-lab — Application Case
Site Conditions
This is a Food & Beverage customer whose plant is at dosing, pasteurising, filling and CIP stages. The main task was laboratory colorimetric and titrimetric water analysis.
The Problem
The difficulty lies in syrups, dairy and beverages that scale easily, under strict hygienic requirements; at the same time frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles. Specification therefore means selected by method standard, sample throughput and reagent kit.
What We Did
We took a laboratory line approach — configuring around lab method standards and sample throughput. Delivery was built around selected by method standard, sample throughput and reagent kit, with point-by-point checks on: food-safety and hygienic design per 3-A / EHEDG.
Operating Outcome
In service the system performs as intended — standardised methods that make data comparable between labs, with routine maintenance falling noticeably.
Chemical & Pharmaceutical · Hach-lab — Application Case
Application Context
reactors, metering vessels and finished-product tanks is a typical Chemical & Pharmaceutical duty. The project started from Hach-lab, focusing on laboratory colorimetric and titrimetric water analysis.
Process Constraints
corrosion plus Ex protection shortens instrument life and makes downtime costly, and highly corrosive media with solvents and crystallisation, partly in explosive atmospheres only amplify it. The Hach-lab specification must therefore cover selected by method standard, sample throughput and reagent kit.
Delivery Approach
Delivery was handled as the laboratory line — configuring around lab method standards and sample throughput. Execution centred on selected by method standard, sample throughput and reagent kit, together with Ex certification and GMP traceability of records.
Field Results
Operation shows the benefit clearly — standardised methods that make data comparable between labs, with confidence in this measuring point improving markedly.
Power & Energy · Hach-lab — Application Case
Customer Profile
The typical setting in Power & Energy is boiler feedwater, turbine condensate and FGD/DeNOx systems. The measuring point is Hach-lab; the focus is laboratory colorimetric and titrimetric water analysis.
Key Difficulties
Conditions are high temperature and pressure with both steam and saline water and, on top of that, drift under high temperature and pressure, with very costly unplanned outages, which a standard configuration cannot handle for long. The design therefore starts with selected by method standard, sample throughput and reagent kit.
Implementation
The scope ran through the laboratory line: configuring around lab method standards and sample throughput. Technically it hinges on selected by method standard, sample throughput and reagent kit, and on these requirements: compliance with power-industry codes and unit availability targets.
Customer Benefit
In practice this means standardised methods that make data comparable between labs, which cut the workload on the site maintenance team.
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