Judd Communications is consulting firm based in Salt Lake City, Utah. We offer products and services for remote environmental monitoring.
Judd Communications
2248 E. Lauri Kay Drive
Salt Lake City, Utah 84124 USA
View ANALOG Output manual as PDF file
Download ANALOG Ouptut Sample Program for theCampbell Scientific CR10X Datalogger CSI file DLD file
Download ANALOG Ouptut Sample Program for the Campbell Scientific CR1000 Datalogger CR1 file
View DIGITAL Output manual as PDF file
Download DIGITAL Ouptut Sample Program for the Campbell Scientific CR10X DataloggerCSI
file DLD file
Download DIGITAL Ouptut Sample Program for the Campbell Scientific CR1000 DataloggerCR1 file
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.
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
Resolution: .5C
Download Sample Program for the Campbell Scientific CR10X DataloggerCSI
file DLD file
Download Sample Program for the Campbell Scientific CR1000 DataloggerCR1 file
Introduction
The Judd Communications Datalogger Display is a 2 line by 40 character display
that can be connected to any datalogger capable of outputting ASCII text. The
Datalogger Display is small terminal that monitors a 1200 baud data line and
displays the output. The Datalogger Display is primarily intended to be used
as a local display, located within 250 feet of a datalogger.
Operation
The Datalogger Display is powered by +12 Volts. Power can usually be taken
directly from the datalogger power supply. Data to be displayed is received
at 1200 baud(8-N-1). The display can be configured to decode either normal or
inverted serial data. The data input levels can be either RS-232 or 0 to 5 Volt.
All ASCII characters can be displayed. The 01 ASCII character (control A) can
be used to clear the display. The 02 ASCII character (control B) can be
used to move the cursor to the beginning of the second line. Up to 80 characters
can be displayed.
Options
Specifications
Power: +12 Volts, 4 ma
Data Input: 1200 baud, 8-N-1, RS-232 or 0 to 5 Volt
Temp Range: 32 to 122 ?F (0 to 50 ?C)
Size: 8 x 1.75 x 1.75 inches (195 x 40 x 40 mm)
Weight: .5 lbs. (.23 kg)
Cable Length: 5 feet (1.52 meters)
Max. Cable Length: 250 feet (76 meters)
Case: Wood or Acrylic
Price $298 (U.S.)
Download Sample Program for Campbell Scientific Dataloggers CSI
file DLD file
Introduction
The Judd Communications LED Datalogger Display is a 2 line by 13 character display
that can be connected to any datalogger capable of outputting ASCII text. The
Datalogger Display is a small terminal that monitors a 1200 baud data line and
displays the output. The Datalogger Display is intended to be used as a local
display, located within 250 feet of a datalogger. The Datalogger Display is
housed in a channeled aluminum frame. The case can be mounted using the included
feet allowing the display to be rotated for optimum viewing angle.
Operation
The Datalogger Display is powered by 120VAC and 12 Volts DC. The 12 Volts DC
power can usually be taken directly from the datalogger power supply. Data to
be displayed is received at 1200 baud(8-N-1). The data input levels can be either
RS-232 or 0 to 5 Volt. All ASCII characters can be displayed. The 01 ASCII character
(Control A) can be used to clear the display. The 02 ASCII character (Control
B) can be used to move the cursor to the beginning of the next line. The ASCII
0 character (NUL) is used to flush the controller's buffer to the display. The
text for both lines are formatted in the buffer. When ready, the contents of
the buffer are sent to the display by issuing an ASCII 0 character.
Specifications
Power: 110VAC, 3A (switchable to 220 VAC)
Power: +12 Volts, 4 ma (translation board)
Data Input: 1200 baud, 8-N-1, RS-232 or TTL logic levels
Temp Range: 32 to 122 °F ( 0 to 50 °C)
Size: 27.1 x 6.8 x 2.4 in (688 x 165 x 61 mm)
Weight: 13 lbs. (5.9 kg)
Cable Length: 10 feet (3 meters)
Max. Cable Length: 250 feet (76 meters)
Character height: 2 inch (50.8 mm)
Price $1200 (U.S.)