MLR-70 Guided-Wave Radar Level Sensor Transmitter
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The MLR-70 Radar Level Sensor Transmitter is a compact, high-accuracy solution for level measurement in challenging environments. Using guided-wave radar technology, this guided-wave radar transmitter emits microwave pulses along a FEP Teflon® coated probe to measure liquid levels in applications like chemical storage and sumps. With a robust IP67 housing, 4-20mA loop-powered output, and resistance to foam, vapor, and turbulence, the MLR-70 ensures reliable performance in harsh conditions.
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OVERVIEW
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SPECIFICATIONS
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MODEL NUMBERS
Manufacturer: Icon Process Controls
Product Type: MLR-70 Guided-Wave Radar Level Sensor Transmitter
Applications: Liquid Chemical Storage, Chemical Sumps, Suitable for Foam, Vapor, Condensate, Turbulence
Measurement Range: Up to 40m (Depending on Variant)
Design Features:
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FEP Teflon® Coated Probe for Chemical Resistance
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High Accuracy with ±5mm Precision
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Simple Programming with LCD Display
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IP67 Housing for Harsh Environments
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4-20mA Loop Powered (Optional HART, Modbus, RS485)
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Resistant to Atmospheric Changes (Pressure, Temperature, Dust)
| Basic Technical Data | |
|---|---|
| Supply Voltage | 18 – 36 VDC |
| Output | 4 – 20mA | HART® |
| Current Consumption | 4 – 20mA, max 22mA |
| Resolution | 1 mm |
| Max Electrode Length | 2 m (MLR-70-11), 12 m (MLR-70-32) |
| Dead Zone (Meas. Sensitivity) | 100 to 250 mm depending on user |
| Measurement Sensitivity (8°) | Low (1), Medium (3), High (5) |
| Failure Indication | Echo loss, internal failure |
| Dampening | 1 – 99 s adjustable |
| Warm Up Time | ~60 s |
| Internal Resistance | 10 kΩ |
| Coupling Capacity | 5 nF | 500 VAC |
| Protection Class | IP67 |
| Process Connection | Screwing with thread G1″ |
| Recommended Cable | PVC 2 x 0.75 mm² |
| Weight (without electrode) | ~0.5 kg (1 kg variant NT, XiT) |
| Type of Display | LED (128 x 64 pixels, yellow) |
| Display Digits | 9 mm height, 5 digits |
| Type of Buttons | Membrane |
| Ambient Temp. Range | -30 to 70 °C |
| Weight (with display) | 46 g |
| Code Section | Description | Options |
|---|---|---|
| MLR-70 | Base Model | |
| Length Electrode | Length in mm | [User specified] |
| Set-up Elements | Basic version with display | D |
| Without display, metal lid | L | |
| Electrical Connection | Short cable outlet | B |
| Outlet for protective conductor | H | |
| Output Type | Current | I |
| Process Connection | NPT G – thread | N |
| Electrode Performance | Without electrode | 0 |
| Fully coated St. steel rod electrode (FEP) | 12 | |
| Fully coated rope electrode and weight (FEP + PTFE) | 32 | |
| Enclosure | Normal, non-explosive areas only | N |
| Xi – Explosion proof, suitable for explosive gases (gas, vapor) | Xi | |
| Xd – Explosion proof, suitable for flammable dust areas | Xd | |
| High Temperature Performance | High temperature performance variants | NT, XiT, XdT |
Note: The order code is structured in sections representing different features of the sensor. Each code section corresponds to specific options that customize the sensor’s configuration, such as electrode length, display setup, connection type, and environmental ratings.
Example Order: MLR-70-100-D-B-I-N-12-N
This represents a sensor with a 100 mm electrode length, basic version with display (D), short cable outlet (B), current output (I), NPT G-thread process connection (N), fully coated stainless steel rod electrode (12), and normal enclosure for non-explosive areas (N).