Digitool Instruments GC132926 Hot air balloon wire less temp gauge User Manual 565436

Digitool Instruments AB Hot air balloon wire less temp gauge 565436

Contents

transmitter dbitx2 user manual

DBI-TX2 User Manual Issue US1 Page 1/11
DBI-TX2 User Manual
U.S. Version
Free Balloon Envelope Radiation
Temperature Wireless Transmitter
DBI-TX2 User Manual Issue US1 Page 2/11
Safety
The manufacturer has designed this instrument to be safe when
operated. Do not use this instrument for any other purpose than
stated.
Operating restrictions
• This instrument should ONLY be used in ships referred as
free manned balloons.
• The DBI-TX2 must be mounted in the balloon exactly as
shown in this manual. The responsibility however for the
safety of the mounting of the sender is not a subject for the
manufacturer or their representatives.
Abbreviations
DBI-002 DigiTool Instruments Free Balloon Flight Instrument
DBI-TX2 DigiTool Instruments Envelope Radiation
Temperature Wireless Transmitter.
RF Radio Frequency
DBI-TX2 User Manual Issue US1 Page 3/11
Table of Contents
1. DESCRIPTION ............................................................... 4
1.1. GENERAL ......................................................................... 4
1.2. DBI-TX2 PHOTO .............................................................. 5
2. SPECIFICATION............................................................ 6
2.1. ENVELOPE THERMOMETER ACCURACY............................... 6
2.2. PHYSICAL DIMENSIONS ..................................................... 6
2.3. ENVIRONMENTAL RATINGS ................................................ 6
2.4. RADIO FREQUENCY TRANSMISSION.................................... 7
2.5. POWER SUPPLY................................................................ 7
2.6. RF TRANSMIT CONTROL .................................................... 7
3. INSTALLATION ............................................................. 8
3.1. SAFETY ............................................................................ 8
3.2. ATTACHMENT ................................................................... 8
4. OPERATION .................................................................. 9
4.1. DBI-TX2 IDENTIFICATION CODE......................................... 9
4.2. DBITX2 IDENTIFICATION CODE PROGRAMMING .................. 9
4.3. POWER ON / OFF ............................................................. 9
5. MAINTENANCE ........................................................... 10
5.1. BATTERY (LITHIUM CELL) REPLACEMENT.......................... 10
5.2. APPROVED SERVICE AGENTS .......................................... 11
DBI-TX2 User Manual Issue US1 Page 4/11
1. Description
1.1. General
• The DBI-TX2 is a wire less transmitter monitoring free hot air
balloon envelope top radiation temperature. It transmits data
to the DBI-002 flight instrument where temperature is
displayed.
• The unit consists of a sturdy aluminum tube enclosure
attached by a velcro strap to the basket overhead frame.
• The unit is power supplied with a replaceable long life lithium
battery. Battery replacement interval is typically four years.
• Power on/off is controlled automatic by the difference of
device (ambient) and radiation (envelope fabric)
temperatures. No operator action is required.
• Each unit has a unique serial code that is matched with the
receiver DBI-002. DBI-002 data reception is qualified by
serial code and comprehensive transmission error detection.
• Short duty cycle and low RF power data transmission
enables interference free operation and multiple units to
operate in close proximity.
• Conforms to FCC part 15.249
• FCC approval identification: TDJGC132926
DBI-TX2 User Manual Issue US1 Page 5/11
1.2. DBI-TX2 Photo
Battery
cap
Velcro strap
attachment
IR lens
aperture
ID label and
location
DBI-TX2 User Manual Issue US1 Page 6/11
2. Specification
2.1. Envelope thermometer accuracy
Range °F Total error +/- °F
-15 to 32 9
32 to 122 7
122 to 167 6
167 to 257 4
257 to 302 6
302 to 347 7
347 to 392 9
2.2. Physical dimensions
Item Value Value
Length 110 mm 4.4 inch
Diameter 50 mm 1.9 inch
Total weight 200 gram 5.6 ounce
2.3. Environmental ratings
Item Value
Box sealing class IP65
Box temperature High 257 °F
Box temperature Low -22 °F
DBI-TX2 User Manual Issue US1 Page 7/11
2.4. Radio frequency transmission
Item Data
Frequency 914.5 MHz
RF Power +0 dBm (1mW)
Modulation FM, deviation +/- 30 kHz
Type Approval
EMC conformity FCC part 15.249
Placard marking DBI-TX2
FCC ID: TDJGC132926
Code: NNNNN
Transmit duration 37 milliseconds
Transmit repetition interval 2.3 seconds
Transmit duty cycle 0.016
2.5. Power supply
Power supply CR2450 3 Volt Lithium Cell
Cell life (on) > 1000 hours
Cell life (off) > 10000 hours
Lithium cell replace interval 1 years
2.6. RF transmit control
Transmit on differential
temperature threshold,
(probe – box).
> 10 °F
Transmit off differential
temperature threshold,
(probe – box).
<= 10 °F
Transmit on minimum
duration
5 minutes
DBI-TX2 User Manual Issue US1 Page 8/11
3. Installation
3.1. Safety
Always consult corresponding envelope flight manual for safe
attachment.
3.2. Attachment
The DBI-TX2 attaches on one overhead frame rod. The IR lens
aperture shall point straight up to the top centre of the envelope
on a free line of sight.
DBI-TX2 User Manual Issue US1 Page 9/11
4. Operation
4.1. DBI-TX2 identification code
Transmitter identification
code is marked on the
box placard.
4.2. DBITX2 identification code programming
Program the DBI-TX2 identification code to the DBI-002 flight
instrument by using the DBI-002 PC application software. Refer
to “DBI-002 User Manual”.
4.3. Power On / Off
The power on / off is automatic:
• The DBI-TX2 will start transmission when a temperature
difference between the ambient and the radiation
temperature is greater than 10 °F.
• The DBI-TX2 will stop transmit after 5 minutes when a
temperature difference between the ambient and the
radiation temperature is greater than 10 °F.
• For permanent power off, remove internal battery coin cell.
See “5.2 Battery replacement”.
DBI-TX2 User Manual Issue US1 Page 10/11
5. Maintenance
5.1. Battery (Lithium cell) replacement
• During normal operation, the internal battery will last for
typical 2 years. Recommended replace interval is 1 years.
• Replace battery if DBI-TX2 does not operate properly.
Unmount the battery cap by
pulling it from the tube.
Replace the coin cell:
• Replace type is “CR2450”.
• Positive terminal facing up.
• Inspect for clean battery
holder metal surface. Clean
with soft cloth if dirty.
Mount the battery cap by
pushing it into the tube.
DBI-TX2 User Manual Issue US1 Page 11/11
5.2. Approved service agents
Name Location Contact
DigiTool AB
Box 6190
100 00 Stockholm
Sweden
tel +46 8 343410
Email service@digitool.se

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