MB7489 4-20HR-MaxSonar-WRMI

High Performance Ultrasonic Precision Rangefinder

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 (IP-68) design modification provides our weather resistant sensors with extra protection against corrosive chemical environments. Ask for the F‑Option (IP-68) when ordering.

Product Specifications

  • 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 Datasheet 4-20HR-MaxSonar-WRMI-datasheet
Sensor Selection Guide Sensor Selection Guide
RoHS Conformity RoHS Declaration of Conformity
CE Declaration of Conformity CE Declaration of Conformity
Reliability Demonstration MTBF Report
High Resolution Pictures High Resolution Pictures.zip

Product 3D Models

1″ BSPP Housing
Keyshot File IGES File ACIS 7.0 File Solid Works Part
STL File Step File ParaSolid File  
1″ NPS Housing
Keyshot File IGES File ACIS 7.0 File Solid Works Part
STL File Step File ParaSolid File  
30mm 1.5 Housing
Keyshot File IGES File ACIS 7.0 File Solid Works Part
STL File Step File ParaSolid File  

Part Numbers

All part numbers are a combination of a six-character base followed by a dash and a three-digit product code. Please review the following table for more information on the three-digit product code.

M B 7 4 8 9 1 0 0
Base
Housing Style
0 Not Applicable
1 3/4″ NPS WR
2 3/4″ NPS WRC
3 Ultra Compact
4 Ultra Compact Flush Mount
5 1″ NPS
6 1″ BSPP
7 30MM 1.5
8 Extended Horn
Options Selected
0 No Options (Bagged)
1 F-Option
2 P-Option
3 F-Option and P-Option
4 No Options (Trayed)
5 TTL (Bagged)
6 TTL (Trayed)
Wire Attach
0 No Wire Attach
1 Wire Attached

The following table displays all of the active and valid part numbers for this product.

Active Part Numbers
MB7489-100 MB7489-101 MB7489-110 MB7489-111
MB7489-120 MB7489-121 MB7489-130 MB7489-131
MB7489-200 MB7489-201 MB7489-210 MB7489-211
MB7489-220 MB7489-221 MB7489-230 MB7489-231
MB7489-500 MB7489-501 MB7489-510 MB7489-511
MB7489-520 MB7489-521 MB7489-530 MB7489-531
MB7489-600 MB7489-601 MB7489-610 MB7489-611
MB7489-620 MB7489-621 MB7489-630 MB7489-631
MB7489-700 MB7489-701 MB7489-710 MB7489-711
MB7489-720 MB7489-721 MB7489-730 MB7489-731