UV254 Organics Monitor

UVM5000

Automatic cleaning system

dual sample feed capability

modbus
comms

continuous automatic calibration

The UVM5000 provides online continuous organics monitoring utilizing a 254 nm ultraviolet light source. The amount of light absorbed provides an ongoing indication of natural organic matter (NOM) in a flowing sample and serves as a continuous surrogate measurement for total organic carbon (TOC). More specifically, UV254 is the best detector of aromatic or reactive organics which when combined with chlorine, can form disinfection by-products (DBPs).

  • Online continuous operation
  • Patent pending Ortho-Beam technology
  • 254nm wavelength UV light source
  • Displays either UV Transmittance or UV Absorbance values
  • User friendly interface
  • 4-20mA analog output
  • RS232 for data logging via PC
  • Dry contact for user configurable alarms
  • Automatic chemical cleaning system
  • Dual sample feed capability
  • Surrogate measurement for TOC/DOC
  • Reduced need for cleaning
  • Continuous compensation for lamp drift and cuvette fouling
  • No reagents
  • Much lower cost than other online organics monitors
  • Very low maintenance costs

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Overview

The UVM5000 provides online continuous organics monitoring utilizing a 254 nm ultraviolet light source. The amount of light absorbed provides an ongoing indication of natural organic matter (NOM) in a flowing sample, and serves as a continuous surrogate measurement for total organic carbon (TOC). More specifically, UV254 is the best detector of aromatic or reactive organics which when combined with chlorine, can form disinfection by-products (DBPs).

The patent pending Ortho-Beam technology provides many significant advantages while maintaining affordability. The monitor’s unique ability to automatically detect and compensate for UV lamp fluctuations and quartz fouling minimizes losses in accuracy over time, and significantly reduces maintenance.

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Q & A’s

The Chemtrac UVM5000 is used for online continuous monitoring of organics in water, utilizing a 254 nm ultraviolet light source to measure UV Transmittance (UVT) or UV Absorbance (UVA) values.

The UVM5000 uses UV254 technology to detect the amount of light absorbed by organic compounds in the water, providing a surrogate measurement for total organic carbon (TOC) and dissolved organic carbon (DOC).

Key applications include monitoring organics removal in water treatment, detecting changes in coagulant demand, optimizing UV disinfection systems, and monitoring potential disinfection by-products (DBPs) formation.

The Ortho-Beam technology is a patent-pending feature that automatically detects and compensates for UV lamp fluctuations and quartz fouling, ensuring consistent accuracy over time.

The UVM5000 provides a 4-20 mA analog output for UVT or UVA values and RS232 for data logging. It also includes dry contacts for user-configurable alarms.

The UVM5000 requires minimal maintenance due to its Ortho-Beam technology, which reduces cleaning needs. An automatic chemical cleaning system is available as an optional feature.

The UVM5000 operates effectively within a temperature range of 32º to 120º F (0º to 50º C) and requires a storage temperature between -4º to 140º F (-20º to 60º C).

The UVM5000 offers reduced maintenance costs, no need for reagents, continuous compensation for lamp drift, and is more affordable compared to other online organics monitors.

Specifications

Features

Description

  • Range

    0 – 100% UVT, 0 – 2 UVA

  • Accuracy

    ± 0.5% FS

  • Repeatability

    ± 0.1% UVT

  • Resolution

    0.1% UVT, 0.001 UVA

  • Units

    cm-1

  • Path Length

    10 mm

  • Sampling Time

    10 seconds

  • Flow Rate

    300 – 1000 mL/min.

  • Calibration

    Ortho-Beam technology allows continuous automatic calibration during operation

  • Cleaning

    Significantly reduced cleaning requirements due to Ortho-Beam technology
    Automatic cleaning (optional)

  • Self Diagnostics

    Continuous detection of leaks, lamp output, humidity, temperature, and electrical fault

  • Operator Interface

    Five push-button menu system

  • Display

    4 line x 20 character backlit LCD
    Multi-color indicator light for system alarms and warnings

  • Alarms

    Dry-contact terminals allow operator configurable alarms for:
    • High and low UVT/UVA setpoints
    • Low lamp output
    • Leak detection
    • Electrical and system fault

  • Humidity Control

    Humidity sensor with large regeneratable desiccant system

  • Outputs

    • 4-20 mA output configurable to either UVT or UVA
    • Dry-contact terminals for alarm conditions
    • RS232 for data logging via PC

  • Wavelength

    253.7 nm

  • Light Source

    Low pressure mercury UV lamp

  • Lamp Life

    2 year expected

  • Dimensions

    14” H x 12” W x 8” D

  • Enclosure

    Nema 4X, wall mountable

  • Fluid Connections

    1/4” tube compression in/out

  • Electrical

    24VDC 20W power adapter (accepts 90-250 VAC 50/60 Hz)

  • Storage Temp

    -4º to 140º F (-20º to 60º C)

  • Operating Temp

    32º to 113º F (0º to 45º C)

  • Warranty

    2 year limited warranty

  • Options

    • Dual Feed
    • Automatic chemical cleaning
    • Open channel / Non-pressurized pump system

HydroACT Features

HA2

HA4

HA8

  • Sensor limit*

    2

    4

    8

  • Analog output limit*

    2

    4

    8

  • Relay limit*

    4

    8

    16

  • Digital Input limit*

    4

    8

    16

  • Isolated universal I/O

  • Nema 4X/IP65

  • Wall & panel mount

  • Multilingual

  • High resolution display

  • Graphical trending

  • On/Off threshold control

    optional

    optional

    optional

  • Advanced control (e.g. PID)

    optional

    optional

    optional

  • Color display

  • Customizable data logs

  • MicroSD card download

  • Remote (Internet) access

    optional

    optional

  • PROFIBUS, Modbus

    optional

    optional

*Sensors, I/O, and relays are all optional and must be specified at time of ordering.

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