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4-20HR‑MaxSonar‑WR Products

MB7489 4-20HR-MaxSonar-WRMI

High Performance Ultrasonic Precision Rangefinder

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F-Option for Chemical Resistance * – optional

P-Option for Corrosion Resistance * – optional

Shielded Cable Attach Option *
(per each) – optional

Additional Wire Length – optional

(1ft = 1 Qty)

Quantity:
Quantity:
Grand total:
Quantities > 25 may delay ship date up to 1 week.
Options with * may delay ship date up to 2 weeks.
Applicable for all variations of this product
QuantityCost Per Product
5 - 9$189.95
10 - 49$179.95
For 34 Nps Wrc Housing & 34 Nps Wr Housing
QuantityCost Per Product
50 - 99$155.97
100$134.37
For 1 Bspp Housing & 1 Nps Housing
QuantityCost Per Product
50 - 99$157.47
100$135.87
For 30mm 1 5 Housing
QuantityCost Per Product
50 - 99$158.97
100$137.37

Product Description

The weather resistant 4-20HR‑MaxSonar‑WR is a rugged, ultrasonic sensor component module that features the industry standard 4-20mA analog current interface. This outdoor sensor provides very short- to long- distance detection and ranging in a compact, robust PVC housing. This ultrasonic sensor meets the IP67 water intrusion standard and matches standard electrical 3/4‑inch PVC pipe fittings.

High-output, acoustic power, combined with continuously variable gain, real‑time background automatic calibration, real‑time waveform signature analysis, and noise rejection algorithms results in virtually noise free distance readings. This holds true even in the presence of many of the various acoustic or electrical noise sources. The 4‑20HR‑MaxSonar-WR sensors are factory calibrated to match narrow sensor beam patterns and provide reliable long-range detection zones.

The 4-20HR-MaxSonar-WRM sensors are equipped with filtering firmware which allows the sensor to ignore smaller targets and noise, and still report the target that gives the largest acoustic return. (The sensor will also reject periodic noise, even noise that has a higher amplitude than the acoustic return from the target.) This gives users the flexibility to consistently range larger targets in the presence of clutter and noise. If the largest target is removed from the field of view, the 4-20HR-MaxSonar-WRM will switch to the target that gives the next largest detectable return.

The Most-Likely filter is designed to report the distance to the largest acoustic return while ignoring smaller targets. When targets are of similar amplitude reflections, preference is given to the closest target.

The MB7489 4-20HR-MaxSonar-WRMI sensor has an inverted 4-20mA signal where 20mA signifies that the sensor is reporting the minimum reported distance and 4mA signifies the maximum reported distance for the sensor.

MB7369 is the non 4-20mA version of this sensor line.
MB7480 is the standard version of this sensor.

Models with additional chemical resistance are available

The F-Option design modification provides our weather resistant sensors with extra protection against corrosive chemical environments. Ask for the F‑Option when ordering.

Product Specifiations

  • Resolution of ~1.6mm
  • Analog current output of 4-20mA
  • 7.5Hz read rate
  • 42kHz ultrasonic sensor measures distance to objects
  • RoHS compliant
  • CE compliant
  • Internal or external temperature compensation
  • Virtually no sensor dead zone, objects closer than 50cm typically range as 50cm
  • Maximum Range of 5-meters (196 inches)
  • Operates from 10V-32VDC
  • <40mA average current requirement
  • Small, light‑weight module
  • Designed for easy integration into your project or product
  • Operational temperature -40°C to +65°C (-40°F to +149°F)
  • Real-time automatic calibration (voltage, humidity, and ambient noise)
  • Firmware filtering for excellent noise tolerance and clutter rejection
  • Weather resistant (IP67), optional chemical resistant F-Option
  • Matches standard electrical 3/4-inch PVC pipe fittings for easy mounting (3/4-inch National Pipe Thread Straight)
  • Long, narrow detection zone
  • Most-likely filter
  • Great for liquid level measurement
  • 20mA is the minimum reported range and 4mA is maximum reported range
  • Retail Price Range: $199.95
  • Volume Pricing (100 or more units): Contact MaxBotix Inc.

Product Documentation

Documents and Downloads

MB7489 Datasheet4-20HR-MaxSonar-WRMI-datasheet
Sensor Selection GuideSensor Selection Guide
RoHS ConformityRoHS Declaration of Conformity
CE Declaration of ConformityCE Declaration of Conformity
Reliability DemonstrationMTBF Report
High Resolution PicturesHigh Resolution Pictures.zip

Product 3D Models

1″ BSPP Housing
Keyshot FileIGES FileACIS 7.0 FileSolid Works Part
STL FileStep FileParaSolid File 
1″ NPS Housing
Keyshot FileIGES FileACIS 7.0 FileSolid Works Part
STL FileStep FileParaSolid File 
30mm 1.5 Housing
Keyshot FileIGES FileACIS 7.0 FileSolid Works Part
STL FileStep FileParaSolid File 

Part Numbers