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Introduction

Judd Communications LLC is a consulting firm based in Salt Lake City, Utah. We offer products and services for remote environmental monitoring. Our main product is the Ultrasonic Depth Sensor.

Judd Communications LLC

2248 E. Lauri Kay Drive
Salt Lake City, Utah 84124 USA

Voice: (801)424-2889 Fax: (801)424-1528


E-Mail: Contact us by E-mail


Ultrasonic Depth Sensor

View ANALOG Output manual as PDF file
ANALOG Ouptut Sample Program for the Campbell Scientific CR10X Datalogger CSI file DLD file
ANALOG Ouptut Sample Program for the Campbell Scientific CR1000 Datalogger CR1 file

View DIGITAL Output manual as PDF file
DIGITAL Ouptut Sample Program for the Campbell Scientific CR10X Datalogger CSI file DLD file
DIGITAL Ouptut Sample Program for the Campbell Scientific CR1000 Datalogger CR1 file

ONSET/HOBO RX3000 Application note for using the depth sensor with their Rx3000 datalogger
ONSET/HOBO U30 Application note for using the depth sensor with their U30 datalogger

 

Transducer Replacement Instructions

The Judd Communications ultrasonic depth sensor is an inexpensive solution for remotely measuring snow depth or water levels. The sensor works by measuring the time required for an ultrasonic pulse to travel to and from a target surface. An integrated temperature probe with solar radiation shield, provides an air temperature measurement for properly compensating the distance measured. An embedded microcontroller calculates a temperature compensated distance and performs an error checking routine.

Both distance and air temperature are output as an analog signal between 0 to 2.5 Volts or 0 to 5 Volts. Measurements can also be output digitally as serial ASCII. Specify Analog or Digital output at time order.

Due to the simplified interface, the depth sensor can interface with any datalogger or control system that can delay at least 3 seconds after powering up before measuring the output.

Specifications

Power: +12 to 24 VDC, 50 mA (maximum sample time 2.6 seconds)

Analog Output: 0 to 2.5 or 0 to 5 VDC

Digital Output: 1200 baud serial ASCII

Range: .5 to 10 meters (1.6 to 32.8 feet)

Beamwidth: 22 degrees

Accuracy: 1 cm or .4 % distance to target

Resolution: 3 mm ( .12 inches)

Temp. range: -40 to + 70C ( -40 to 158F)

Size: 8 x 8 x 13 cm (3 x 3 x 5 inches)

Weight: .6 kg (1.3 lbs.)

Mounting: 1/2 inch galvanized threaded pipe

Cable length: 7.6 meters (25 feet)

Max. cable length: 304 meters (1000 feet) for Analog output, 76 meters (250 feet) for Digital output

Temperature Sensor Specifications

Accuracy: 1C, -40 to +85C

Resolution: .5C

Please contact us for current pricing