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Features and typical applications
Features and typical applications
Key Features
- Process TOC analyzer for continuous industrial monitoring
- High-temperature oxidation method
- Continuous, real-time analysis
- Exceptionally stable measurement performance
- High system availability and operational reliability
- Optional TNb measuring channel for combined TOC/TNb analysis
- Intelligent self-monitoring and diagnostics
- Designed from the ground up for process applications
Typical Applications
- Pure water monitoring (e.g. boiler feed water, condensate)
- Production facility monitoring
- Drinking water monitoring
- Mixed drainage water monitoring
- Influent and effluent wastewater treatment monitoring
- Airport de-icing water treatment monitoring
Description
Description
The TOC-820 represents the latest generation of process TOC analyzers developed by LFE.
Since the early 1980s, LFE analyzers have been successfully used in chemical plants and various industrial applications worldwide. Drawing on decades of field experience, the TOC-820 was specifically designed for continuous TOC monitoring in both high- and low-load water streams.
Its robust construction and advanced process design ensure reliable long-term operation under demanding process conditions.
Continuous analysis with nearly 100% carbon conversion
- High temperature oxidation for the complete conversion of all organic carbon compounds
- Continuous analysis with short sample injection cycles (typ. 10 sec)
- Continuous sample conditioning for improved real time analysis
Comprehensive intelligent self-monitoring
- Distinction between operational and maintenance-related impairments
- Output of alarm conditions via analog and digital outputs as well as a plain text description on the LC display
Outstanding reactor service-life
- The dimensioning of the analytical parameters allows maximum possible reactor service life in combination with the fastest possible response time.
- "Quick reactor change" design for high operational availability
Simple operation
- All relevant instrument functions shown in plain text on the LC display
- Intuitive user interface
- Optimized instrument design for ease of maintenance
Engineered for long-term reliability
Designed for high availability and reliable operation in industrial process environments.
Key components are developed in-house or sourced from proven, trusted brand-name manufacturers.
- 100% process design - NOT a modified laboratory instrument
- Modern, high quality semiconductor NDIR photometer system
- Continuous measurement with low maintenance, high precision metering pump
- Purgable cabinet section for NDIR photometer and main electronics as well as encapsulation of peripheral electronics
- Spatial separation of water bearing components
- Consistent use of corrosion resistant materials
Signal & status outputs
- Optional digital chart recorder with data storage function
- Up to 6 analog outputs (0(4)-20 mA) for measured values as well as peripheral system values
- Up to 8 digital inputs and 10 digital outputs
- RS-232 interface
- Modbus TCP interface
- All inputs and outputs are individually configurable.
Accessories and Options
Accessories
The TOC-820 base unit operates as a TC analyzer; inorganic carbon removal is handled by the ASM unit.
This unit can be equipped with further options:
- Automatic calibration
- Multiplex capability (up to 3 sample streams)
- Sample dilution stage
Additional Options
- Built-in paperless recorder
- Analog expansion module
expands the system from 2 up to 6 configurable 0(4)-20 mA analog outputs - Digital expansion module
8 digital inputs plus expansion of system from 3 up to 10 digital outputs - RS-232 serial interface
- Modbus TCP interface
- Simultaneous TNb analysis
Technical data
Technical Data
Enclosure and Electrical Data
| Property | Specifications | |
|---|---|---|
|
Technical specifications subject to change without notice |
||
| TOC-Analyzer (main instrument cabinet) | ||
| Cabinet | 2-section 19" cabinet on lockable rollers; active ventilation via filtered fans; electronics section purgeable |
|
| Dimensions (h x w x d) |
1690 mm x 650 mm x 650 mm | |
| Power | 220/230 VAC - 50/60 Hz (110/120 VAC optional) continuous operation: 550 VA (Warm-up phase: 800 VA) |
|
| Acidifier / Sparger / Multiplexer unit (option) | ||
| Construction | Components on polypropylene panel for wall mounting | |
| available options | acidifier-/sparger stage, automatic calibration, stream multiplex, supplemental peristaltic bypass feed pumps | |
| Dimensions (h x w) |
Basic unit: 500 x 500 mm Extended unit: 500 x 665mm (provides room for additional optional peristaltic pumps) |
|
Analytical-Operational Data
| Property | Specifications | |
|---|---|---|
|
Technical specifications subject to change without notice |
||
| Analytical-/Operational data | ||
| Measured quantity |
Basic instrument: TC
With optional sparger-unit: TOC/DOC as well as optional simultaneous VOC analysis |
|
|
TC/TOC/DOC
|
|
|
| Principle[2][3] |
High temperature combustion (typically 950°C) of water sample with subsequent photometric CO2 analysis in the dried reactor exhaust (Peltier sample gas cooler). |
|
| Response time[2] | t90: typically 6 min (continuous analysis) | |
| Precision[2] | better than ±1% of FSO | |
| Accuracy[2] | better than ±1% of FSO | |
Instrument Interface
| Property | Specifications | |
|---|---|---|
|
Technical specifications subject to change without notice |
||
| Inputs and outputs | ||
| Read-out | LC-display (40 characters x 16 lines) and user interface based on NAMUR recommendation Language switchable between English and German |
|
| Instrument Status | Plain text description on the LC-display as well as categorization into one of the following states (NAMUR NE 107 compliant[1]): FAILURE | FUNCTION CHECK | MAINTENANCE REQUIRED |
|
| Analog signal output | 2 current outputs (standard; optionally expandable to a total of analog 6 outputs) 0(4)-20 mA (RLoad = 600 Ohm max.; all outputs isolated and individually configurable) • 0-20 mA or 4-20 mA • 4-20 mA with superimposed instrument status (NAMUR NE 43 compliant[1]) • Test signal levels |
|
| Digital outputs (standard) |
3 digital outputs for instrument status (NAMUR NE 107 compliant[1]) FAILURE | FUNCTION CHECK | MAINTENANCE REQUIRED (relay contacts 28 V max.; 350 mA max.) |
|
| Digital I/O expansion module (optional) |
Digital inputs • 8 configurable inputs (6 – 24 VDC; 10 mA max.) • Sample stream selection, calibration solution selection, initiation and cancellation of AutoCal Digital outputs • 7 configurable outputs (relay contacts 28 V max.; 350 mA max.) • thresholds, feedback as to sample stream, calibration solution and AutoCal etc. |
|
| Modbus interface (optional) |
• Modbus TCP | |
[1] NAMUR: Standardization commission for measuring and control technology in the chemical industry (sub-committee for operability of microprocessor-controlled process analytical- instrumentation)
[2] Data dependent on instrument configuration
[3] Range specifications using standard instrument parameters, without optional sample dilution.
Downloads
Downloads 
TOC-820 On-line TOC Analyzer
Brochures and Product Data Sheets
Technical specifications subject to change without notice
