SKU: TH1289
The MB7851 TankSensor ultrasonic sensor offers 1 mm resolution and a ~2Hz read rate, making it suitable for precise distance measurement applications. The sensor operates at 42kHz, effectively measuring distances to objects with a maximum range of 5000 mm (196 inches). It is RoHS compliant and provides multiple output options, including analog voltage, serial communication, and an analog envelope for signal processing and troubleshooting.
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The MB7851 TankSensor ultrasonic sensor offers 1 mm resolution and a ~2Hz read rate, making it suitable for precise distance measurement applications. The sensor operates at 42kHz, effectively measuring distances to objects with a maximum range of 5000 mm (196 inches). It is RoHS compliant and provides multiple output options, including analog voltage, serial communication, and an analog envelope for signal processing and troubleshooting.
The sensor functions on a low-power design, requiring an operating voltage between 3.0V to 5.5V and consuming an average current of only 1.8mA. Designed to be lightweight and integrates seamlessly into various projects. It operates reliably in extreme temperatures, from -40˚C to +65˚C (-40˚F to +149˚F).
Please refer the table below and contact our support, if you would like to order other than the base variant.
For more details please refer the OEM website for reference. (Click Here)
Technical specification for MaxBotix MB7851 Ultrasonic TankSensor.
| Resolution | 1 mm |
|---|---|
| Read Rate | ~2Hz |
| Sensor Type | 42kHz Ultrasonic sensor measures distance to objects |
| Compliance | RoHS Compliant |
| Sensor Outputs | Analog Voltage, Serial, Analog Envelope |
| Operating Voltage | 3.0-5.5V |
| Current Requirement | Low 1.8mA average current |
| Weight | Lightweight |
| Integration | Designed for easy integration into your project or product |
| Operational Temperature | -40˚C to +65˚C (-40˚F to +149˚F) |
| Calibration | Real-time automatic calibration (voltage, humidity, ambient noise) |
| Noise Filtering | Firmware filtering for better noise tolerance and clutter rejection |
| Mean Time Between Failure (MTBF) | 20+ Years |
| Weather Resistance | Weather Resistant (IP67), optional Chemical Resistant F-Option |
| Mounting Compatibility | Sensor connection end matches 3/4-inch PVC pipe fittings (3/4″ National Pipe Thread Straight) |
| Horn Compatibility | Matches 2-inch PVC pipe fittings (2″ National Pipe Thread Straight) |
| Advanced Features |
|
| Obstruction Handling | Can range large objects behind small obstructions |
| Analog Envelope Output | For easy troubleshooting and signal processing |
| Maximum Range | 5000 mm (196 inches) |
| Detection Zone | Long range, narrow detection zone |
Pinout for MaxBotix MB7851 Ultrasonic TankSensor.
| Pin | Name | Function | Standard Wire Color |
|---|---|---|---|
| 1 | RX | Serial Receive | White |
| 2 | AE | Real time analog envelope output of the acoustic waveform | Orange |
| 3 | AV | Analog Voltage | Brown |
| 4 | FREERUN/ TRIGGER |
Pull HIGH or let float for Freerun, Pull LOW to prevent ranging. Pull HIGH for atleast 20uS to command a single range reading. | Green |
| 5 | TX | Serial Transmit | Blue |
| 6 | V+ | Power Supply | Red |
| 7 | GND | Ground—Return for the DC power supply. GND (& V+) must be ripple and noise free for best operation. | Black |
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