NGM – Guided Wave Radar Level Transmitter
| Product Specifications | |
| Measuring Range | Liquids up to 65 Feet |
| Fittings | 3/4″ NPT, G 3/4, ANSI Flange 1½”…4″, DIN Flange DN40…DN100 |
| Wetted Parts | St. Steel, PTFE |
| Operating Pressure | -30″Hg…580 PSIG (-1..40 Bar) |
| Media Temperature | -58…485 °F (-50…250 °C) |
| Accuracy | ± 3 mm or 0.03% of Measured Value |
| Power Supply | 12-30 VDC, 4-Wire |
| Output | 4-20 mA, PNP Switching Output |
| Product Features | ||
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Suitable for Many Liquids and Light Solids
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Independent of Density, Temperature, Pressure, Humidity and Conductivity
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Modular Probe Design
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Complete Galvanic Insulation of Device Electronics
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The KOBOLD NGM Series guided wave radar level transmitter uses time domain reflectometry (TDR) technology, also known as “guided microwave” or “guided wave radar”. This means that low-energy and high-frequency electromagnetic impulses, generated by the sensor’s circuitry, are propagated along the probe, which is immersed in the liquid or solid to be measured. When these impulses hit the surface of the media, part of the impulse energy is reflected back up the probe to the circuitry, which then calculates level from the time difference between the impulses sent and the impulses reflected. The KOBOLD NGM Series guided wave radar level transmitter’s sensor can transmit the analyzed level as a 4-20 mA analog output, or it can convert the values into a freely programmable switching output signal.