SS400G MLSS Converter

Brand: Yokogawa Electric Corporation

The Model SS400 MLSS Analyzer is a measuring system best suited to continuously and consistently measure the concentration of mixed liquor suspended solids (MLSS) in an activated-sludge treatment process found in sewage or industrial wastewater treatment facilities.

The analyzer consists of an MLSS sensor comprising light emitting and photodetector units, an MLSS converter with a digital display for instant recognition of readings, and one of several types of holders.

Designed to be more lightweight and compact for easier handling when compared with conventional equipment, the analyzer also has a construction that allows easy system maintenance.

The SS400G MLSS converter has a measuring range as wide as 500 to 20,000 mg/L (ppm).

Microprocessor based, it has a wealth of self-diagnostic functions and alarm contact outputs like other converters in the EXA series, as well as excellent operability.

A self-cleaning floating holder is available in addition to free-standing and immersion models, offering a wide range of choices according to the application needs.
Features
Converter
  • Wide output ranges, 0-1000 mg/L to 0-20000 mg/L
  • Output in different two ranges
  • Abundant contact outputs
  • Enhanced self-diagnosis functions including failure in light source
Sensor
  • Easy-to-maintain, lightweight, compact probe-like sensor
  • Virtually no need for replacing light source and photodetector unit
  • Pulse-driven light emission, eliminating effects of disturbing light
  • Arrangement of optical system highly immune to effects of light refl ecting from boundary surface
  • Jet cleaning unit option
  • Choice of various types of holders according to application needs

Specifications

Ambient Temperature Range

  • -10° to 55° C (14° to 131° F)

Approvals & Certifications

  • EMC EN 55011 Class A, Group 1
  • KC

Cable Entry

  • DIN PG13.5

Conduit Connection

  • 1/2” NPT
  • G 1/2” Female

Consumption

  • 22 VA, Max.
  • 5 W, Max.

Cover Material

  • Polycarbonate

Diameter

  • 0.23” to 0.47” (6 to 12 mm) - Outer Diameter of Cable

Display

  • 6-Digit Alphanumeric Display - Message Display
  • 6-Digit LCD Display

Electrical Rating

  • 2 A at 250 Vac, 100 VA, Max.
  • 2 A at 30 Vdc, 50 W, Max.

Enclosure Finish

  • Baked Polyurethane Coating
  • Deep Sea Moss Green (Equivalent to Munsell 0.6 GY3.1/2.0) - for Cover
  • Epoxy Baked Finish
  • Frosty White (Equivalent to Munsell 2.5Y8.4/1.2) - for Casing

Enclosure, Body Material

  • Molded Aluminum Alloy

Environmental Protection

  • IP65
  • NEMA 4X
  • Watertight

Humidity

  • 10 to 90 % Relative Humidity, Non-Condensing

Indication

  • LED

Linearity

  • ± 4.5 % of Full Scale (By Stable Kaolin Solution)

Materials of Construction

  • Carbon Steel - Hood for Sun Protection

Measuring Range

  • 0 to 1,000 mg/L to 0 to 20,000 mg/L

Mounting

  • JIS 50A 2” Pipe Mounted
  • Panel Mounted
  • Wall Mounted

Output

  • 2 ± 0.5 mA - Output Current (Burndown)
  • 22 ± 0.5 mA - Output Current (Burnup)

Port

  • 6-Port - Cable Inlet

Power Supply

  • 100-240 Vac, 50/60 Hz
  • 24 Vdc

Repeatability

  • 2 % of Full Scale (By Calibration Plate)

Resistance

  • 100 kiloohms or more - OFF Input Resistance
  • 200 ohms or Less - ON Input Resistance
  • Load Resistance: 600 ohms, Max.

Screw Material

  • Stainless Steel - Screw, Hood for Sun Protection, Mounting Brackets, Tag Plate

Size

  • 0.13 to 4 mm² - Cable Terminal

Stability

  • ± 2 % of Full Scale/Day - Zero (By City Water), Span (By Calibration Plate)
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