YOKOGAWA TB750G, Quick Start Manual, Page: 6 / 37

<1.Overview>
1-1
IM 12E01A06-02E
1. OVERVIEW
1.1 Features
The TB750G is a process turbidimeter employing the right angle light scattering method, and has the
following features.
• Highly reliable measurement with excellent linearity and repeatability
- Linearity: ±2% of reading or ±0.01 NTU, whichever is greater
- Repeatability: ±1% of reading or ±0.002 NTU, whichever is greater
- Display resolution: 0.001 NTU
• Easy-to-clean measurement cell
• Compact, lightweight converter and detector
• User configurable analog output range
- Analog output range: 0-0.2 NTU to 0-100 NTU
• Analog output range switching (2 or 3 ranges)
• Enhanced self-diagnostic function as standard
- Light source failure, input element failure, calibration failure, various circuit failures, etc.
• Detector designed to remove influence of air bubbles
• A wide range of measurement conditions
- Low flow rate: 0.05 to 20 l/min {0.8 to 317 gal/h}
- High pressure: Up to 500 kPa {72 psi}
- Sample temperature: 0 to 50°C {32 to 122°F}
• Detector can be connected for in-line analysis
• 2 analog outputs, 3 relay contact outputs, and 1 serial communication
• Many options available upon request
• Ultrasonic transducer and oscillator for ultrasonic cleaning
• Various head tanks to accommodate application requirements
1.2 Measurement Principle
The measuring system of the TB750G turbidimeter, comprised of a detector and a converter, complys
with USEPA 180.1.
Receiver (Darkroom)
Scatted Light Detection Element
Scatted Light Detector
Measurement Window (Glass)
Lens
Light Source
(Lamp)
F1-1E.ai
Measuring
Water
Figure 1.1 Measurement Principle