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The Thermo Scientific™ DDG3 Digital Density Gauge is a non-intrusive, non-contact device for accurate density or percent solids measurement for liquids and slurries flowing in a pipe. Equipped with a range of communication protocols, it is especially suitable for applications involving highly toxic, highly corrosive materials or processes operating at elevated temperature. The DDG3 is easy to install and used across the mineral processing, petrochemical, coal, food, water treatment, and pulp/paper industries to support efficient process control and optimize productivity.
| Product Type | High Performance Density Gauge |
| Detector Type | NAI scintillation detector |
| Gamma Ray Source Type | Cs-137 or Co-60 |
| Certifications/Compliance | IP66, CE |
| Circuitry | 16 bit microprocessor, 32K memory, Analogue I/O 12 bit resolution, 4 line transflective backlit LCD, LED indicators on all I/O, 16 key Tactile membrane |
| Housing Material | Controller Assembly: Stainless Steel (316) IP66 Detector Assembly: Epoxy-coated Mild Steel or optional Stainless Steel Source Housing: Epoxy-coated Mild Steel over Lead or optional Stainless Steel |
| Inputs | One 4 to 20 mA current loop input for flow meter One 4 to 20 mA current loop input for temperature |
| Interface Cable | 2 pair, overall shielded, 10 m standard, up to 1000 m maximum |
| Mounting Hardware | Controller: Wall mount |
| Operating Temperature Range | Detector Assembly: 0°C to +60°C (+32°F to +140°F) Controller Assembly: 0°C to +55°C (+32°F to +131°F) |
| Outputs | Two 4-20 mA programmable current loop outputs Voltage free contact for remote alarm rated 220 VDC, 250 VAC, 2 A max Voltage free contact for remote totaliser rated 220 VDC, 250 VAC, 2 A max |
| Power Supply | 24 VDC, 110/230 V, 50/60 Hz, 10 W |
| Product Line | AM870 |
| Protocols | ModBus RTU, ModBus TCP (standard) HART, Profinet, Ethernet I/P (optional) |
| Weight (English) | Detector Assembly: 55 lb. Controller Assembly: 11 lb. Source Housing: 95 lb. |
| Weight (Metric) | Detector Assembly: 25 kg Controller Assembly: 5 kg Source Housing: 42 kg |
| Unit Size | Each |
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The DDG3 is a nucleonic density gauge that is installed on the outside of a pipe - no shutdown required - to provide reliable data for robust process control: Key features include:
- Non-intrusive measurement, for applications involving high temperature and/or highly toxic or highly corrosive materials
- High performance microprocessor electronics, for reliable operation over the long-term
- Sensitive scintillation detectors, for accurate measurement with lower strength isotopes
- Rugged construction, for use in harsh environments
- User friendly menu driven display, for easy set-up and calibration
- Suitable for pipes up to 1000 mm in diameter
- Auto source decay compensation, for enhanced long-term performance.
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