NMD-99S Two-Wire Explosion-Proof Inductive Conductivity/Concentration Transmitter
The NMD-99S transmitter is a two-wire, single-channel conductivity transmitter independently developed by Dongrun Instruments. It is available in both explosion-proof and intrinsic safety versions, and supports the Hart 7.5 communication protocol. The transmitter features a robust housing with a high protection rating, capable of withstanding harsh environments. It can monitor conductivity and the concentration values of acid, alkali, and salts. The transmitter is compatible with inductive conductivity sensors from Dongrun, METTLER, and other manufacturers.
Product Features
Better Explosion-proof Performance:
- Optional Exdb IICT6Gb explosion-proof certification, allowing operation with a magnetic rod on the outer casing in explosive environments, ensuring safety and reliability.
- Optional Exia IICT6 Ga intrinsic safety explosion-proof certification, compatible with safety barriers, providing a wider range of applications.
Excellent Environmental Adaptability:
- IP66 protection rating certification, with a thickened aluminum alloy housing, making the casing more robust and weather-resistant.
- The intrinsic safety circuit board adopts a high-insulation resin encapsulation process, offering better corrosion resistance and explosion-proof performance.
- Temperature range: -20°C to 60°C, suitable for more application scenarios.
Two-Wire Intelligent Instrument:
- Two-wire intelligent instrument, HART 7.5 communication protocol allows transmission of more instrument status information (official member of the HART Communication Foundation).
- Calibration and parameter setting via two buttons, with a multi-level menu tree design, making operation simple and convenient.
- Automatic temperature compensation, with PT100/PT1000 temperature sensors automatically recognized.
- Compatible with Dongrun and commonly used conductivity electrodes both domestically and internationally.
High Instrument Accuracy:
- Accuracy: ±1% of the measured value.
Application Areas
It is widely used in industrial reaction processes, phase separation, water treatment, circulating water, wastewater, boiler water, environmental protection, and other application environments.
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