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Pyxis LT-739B Ultralow Turbidity Sensor (Infrared Light, Mid Range)

Ultra-low turbidity sensor, infrared light 860nm, 0.000-40.000NTU, 0.002NTU resolution, 2% accuracy, ISO 7027. Dual 4-20mA + RS-485, 8-pin.

Pyxis Lab
Infrared Light Sensor
Water Quality Monitoring

Pyxis LT-739B Ultralow Turbidity Sensor (Infrared Light, Mid Range)

Model:
LT-739B
Brand:
Pyxis Lab

The Pyxis LT-739B is a mid-range ultralow turbidity sensor using infrared light (860nm) illumination, built for resolution and accuracy beyond a standard process turbidimeter. It measures 0.000-40.000NTU with 0.002NTU resolution and 2% accuracy to ISO 7027, with dual 4-20mA analog outputs plus RS-485 through an 8-pin connector.

Mid-range precision — 0.000-40.000NTU range with 0.002NTU resolution and 2% accuracy to ISO 7027
Infrared illumination — 860nm light source for consistent low-turbidity readings
Mid-range precision — 0.000-40.000NTU range with 0.002NTU resolution and 2% accuracy to ISO 7027

Description

The Pyxis LT-739B is the mid-range, infrared-light (860nm) variant of the ultralow turbidity sensor family, delivering resolution and accuracy beyond a standard process turbidimeter. It measures across a 0.000-40.000NTU range with 0.002NTU resolution and 2% accuracy, tested to the ISO 7027 method.

It communicates through dual 4-20mA analog outputs plus RS-485 via an 8-pin connector, integrating with existing control and monitoring systems.

The mid-range span and ISO 7027 referencing make it a fit for process applications in the tens-of-NTU window where that standard, rather than EPA 180.1, applies.

Why Use This

Balanced Range and Precision

Covers 0.000-40.000NTU with 0.002NTU resolution and 2% accuracy to ISO 7027, suited to mid-range low-turbidity monitoring.

Flexible Signal Output

Dual 4-20mA analog outputs plus RS-485 via an 8-pin connector support integration into existing systems.

Applications

  • Mid-range process turbidity monitoring — tailored to the 0-40NTU window under ISO 7027
  • Regional compliance monitoring — where ISO 7027 is the applicable standard
  • Treated water clarity verification — precision beyond standard process turbidimeters

FAQ

What range does the LT-739B cover?

0.000-40.000NTU, with 0.002NTU resolution and 2% accuracy.

What standard is it measured to, and how does that affect the design?

ISO 7027, using infrared (860nm) light illumination — the infrared counterpart to the warm-white-light LT-739, which is measured to EPA 180.1.

What outputs does it provide?

Dual 4-20mA analog outputs plus RS-485, via an 8-pin connector.

Is this suited to process control or low-range compliance monitoring?

Its mid-range span (0-40NTU) suits process turbidity monitoring in that window, positioned between the low-range LT-737B and the broader-range LT-736B.

Download

D25 Product Datasheet
PDF · 1.2 MB
Installation Manual
PDF · 0.8 MB

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