Features
• Radar level meter with guided wave (TDR).
• Immediate view of the measured values on OLED or LCD display units.
• Universal use, direct mounting into containers, silos, vessels, reservoirs, etc.
• Variants with rod or rope electrode and now also all-stainless steel versions.
• Measuring range up to 40 m.
• Xi, XiT versions for usage in explosive areas, or Xt, XtT versions for usage in flammable dusts areas.
• Current output (4 ... 20 mA) with HART® protocol or output RS–485 Modbus.
The GRLM® radar level meters are compact measuring devices consisting of two main parts – a level meter (housing) and a display module (display). The electronics transmits very short electrical pulses (0.5 ns), which are linked to a one-wire transmission line (measuring electrode). Measuring electrode can be created of rod or rope. The pulse propagates along the electrode in the form of electromagnetic wave toward the level surface, where it is partly reflected and the reflected component is returned to the receiving module of the electronics. The electronics measures the time of flight of electromagnetic wave and the instant distance to the surface level is calculated. Then based on the height of the level, the level meter current output 4 .. 20 mA is set with the HART communications or an industrial RS-485 line with Modbus RTU communications and the measured value is shown on the display.
Radar level meters with guided wave are suited to continuous level measurement of various liquid, mush and bulk-solid materials. Level meters are resistant against changes in the atmosphere (pressure, temperature, dust, steam) and to changes in medium parameters (change in dielectric constant, conductivity)
• Immediate view of the measured values on OLED or LCD display units.
• Universal use, direct mounting into containers, silos, vessels, reservoirs, etc.
• Variants with rod or rope electrode and now also all-stainless steel versions.
• Measuring range up to 40 m.
• Xi, XiT versions for usage in explosive areas, or Xt, XtT versions for usage in flammable dusts areas.
• Current output (4 ... 20 mA) with HART® protocol or output RS–485 Modbus.
The GRLM® radar level meters are compact measuring devices consisting of two main parts – a level meter (housing) and a display module (display). The electronics transmits very short electrical pulses (0.5 ns), which are linked to a one-wire transmission line (measuring electrode). Measuring electrode can be created of rod or rope. The pulse propagates along the electrode in the form of electromagnetic wave toward the level surface, where it is partly reflected and the reflected component is returned to the receiving module of the electronics. The electronics measures the time of flight of electromagnetic wave and the instant distance to the surface level is calculated. Then based on the height of the level, the level meter current output 4 .. 20 mA is set with the HART communications or an industrial RS-485 line with Modbus RTU communications and the measured value is shown on the display.
Radar level meters with guided wave are suited to continuous level measurement of various liquid, mush and bulk-solid materials. Level meters are resistant against changes in the atmosphere (pressure, temperature, dust, steam) and to changes in medium parameters (change in dielectric constant, conductivity)
Specification
Measuring range：0.5 ... 40 m
Output：4 ... 20 mA s HART® / linka RS-485 / Modbus RTU
Accuracy：± 2 mm
Supply voltage：DC 18 ... 36 V / DC 18 ... 30 V / DC 18 ... 33 V
Ambient temperature range：-30 ... +70°C
Protection class：IP67
Output：4 ... 20 mA s HART® / linka RS-485 / Modbus RTU
Accuracy：± 2 mm
Supply voltage：DC 18 ... 36 V / DC 18 ... 30 V / DC 18 ... 33 V
Ambient temperature range：-30 ... +70°C
Protection class：IP67
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Note : Design and specifications are subject to change without notice.
Note : Please make sure the product and the device which connect with RS-485 are on common ground, avoid damaged product.