OUSAF22

Summary

Product identification

The OUSAF22 is an optical sensor designed for measuring color concentrations within the visible electromagnetic spectrum. It is intended to be used in conjunction with the OUA260 flow assembly and a Liquiline CM44P transmitter.

Application

The sensor measures color concentrations using scales such as APHA/Hazen, EBC, ASBC, ASTM, and ICUMSA. It is suitable for applications including:

• Outgoing goods inspection and purity monitoring
• Color assurance
• Discoloration control
• Distillation monitoring

Measuring principle

The sensor operates on the principle of light absorption, based on the Lambert-Beer law. It emits light through the medium, with a beam splitter directing a portion to a measuring detector and another to a reference detector. The reference detector compensates for particles, bubbles, and lamp aging. Wavelength selection is achieved using filters, and light intensity is converted to a photocurrent by a photodiode. The associated transmitter converts this to absorbance units (AU) or optical density (OD).

Operating limits

Environment

• Ambient temperature range: 0 to 55 °C (32 to 130 °F)
• Storage temperature: -10 to +70 °C (+10 to +160 °F)
• Humidity: 5 to 95 %
• Degree of protection: IP 65 (NEMA 4) for all optical parts

Process

• Process temperature: 0 to 90 °C (32 to 194 °F) continuous; Max. 130 °C (266 °F) for 2 hours
• Process pressure: Max. 100 bar (1450 psi) absolute, depending on material, pipe size, and process connection of the flow assembly.

Feed water

• Measuring range:
  • 0 to 2.5 AU
  • Max. 50 OD (depending on the optical path length)
• Wavelength:
  • Measurement: 400 nm, 420 nm, 430 nm, 490 nm, 520 nm
  • Reference: 720 nm

Product water

See the official PDF for exact tabulated values.

Electrical

• Power supply: Sensor connects to transmitter via CUK80 or OUK20 cable set.
• Lamp voltage: 4.9 ± 0.1 V
• Cable length: Maximum 100 m (330 ft)

Hazardous area approvals

• ATEX II 2G Ex db IIC T5 Gb
• FM Cl.1, Div. 1, Groups B, C, D

Mechanical / hydraulic

• Sensor module dimensions:
  • High-luminescence and standard incandescent lamp: 33.78 mm (1.33 in)
  • Gas-filled lamp: 33.78 mm (1.33 in)
  • Detector (standard version with test filter): 101.6 mm (4.0 in)
• Weight: 1.225 kg (2.7 lbs.), without flow assembly
• Materials:
  • Sensor housing: Stainless steel 316L
  • OUA260 assembly: Stainless steel 316, 316L, Kynar, or customer-specific material
  • Cable connection ends: Nickel-plated brass
• Light source: High-luminescence lamp or gas-filled high-performance lamp. Lamp operating life: typically 10,000 h.
• Detector: UV silicon detectors, hermetically sealed.
• Filter: Multilayer narrow-band interference filter.

Flow Assembly OUA260

• Materials: Stainless steel 316, 316L or Kynar (other materials available on request).
• Features a wide variety of process connections and path lengths.

Cable Set CUK80

• Pre-terminated and labeled cables for connecting analog photometer sensors.

Disclaimer

This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror