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

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Document ID	565436
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Document Description	transmitter dbitx2 user manual
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Date Submitted	2005-07-26 00:00:00
Date Available	2005-08-23 00:00:00
Creation Date	2005-07-26 06:17:33
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DBI-TX2 User Manual
U.S. Version
Free Balloon Envelope Radiation
Temperature Wireless Transmitter
DBI-TX2 User Manual Issue US1
Page 1/11
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
DBI-TX2
RF
DigiTool Instruments Free Balloon Flight Instrument
DigiTool Instruments Envelope Radiation
Temperature Wireless Transmitter.
Radio Frequency
DBI-TX2 User Manual Issue US1
Page 2/11
Table of Contents
1.
DESCRIPTION ............................................................... 4
1.1.
1.2.
GENERAL ......................................................................... 4
DBI-TX2 PHOTO .............................................................. 5
2.
SPECIFICATION ............................................................ 6
2.1.
2.2.
2.3.
2.4.
2.5.
2.6.
ENVELOPE THERMOMETER ACCURACY............................... 6
PHYSICAL DIMENSIONS ..................................................... 6
ENVIRONMENTAL RATINGS ................................................ 6
RADIO FREQUENCY TRANSMISSION .................................... 7
POWER SUPPLY ................................................................ 7
RF TRANSMIT CONTROL .................................................... 7
3.
INSTALLATION ............................................................. 8
3.1.
3.2.
SAFETY ............................................................................ 8
ATTACHMENT ................................................................... 8
4.
OPERATION .................................................................. 9
4.1.
4.2.
4.3.
DBI-TX2 IDENTIFICATION CODE......................................... 9
DBITX2 IDENTIFICATION CODE PROGRAMMING .................. 9
POWER ON / OFF ............................................................. 9
5.
MAINTENANCE ........................................................... 10
5.1.
5.2.
BATTERY (LITHIUM CELL) REPLACEMENT.......................... 10
APPROVED SERVICE AGENTS .......................................... 11
DBI-TX2 User Manual Issue US1
Page 3/11
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 4/11
1.2. DBI-TX2 Photo
Velcro strap
attachment
Battery
cap
ID label and
location
DBI-TX2 User Manual Issue US1
IR lens
aperture
Page 5/11
2. Specification
2.1. Envelope thermometer accuracy
Total error +/- °F
Range °F
-15 to 32
32 to 122
122 to 167
167 to 257
257 to 302
302 to 347
347 to 392
2.2. Physical dimensions
Item
Value
110 mm
50 mm
200 gram
Length
Diameter
Total weight
Value
4.4 inch
1.9 inch
5.6 ounce
2.3. Environmental ratings
Item
Box sealing class
Box temperature High
Box temperature Low
DBI-TX2 User Manual Issue US1
Value
IP65
257 °F
-22 °F
Page 6/11
2.4. Radio frequency transmission
Item
Data
Frequency
RF Power
Modulation
Type Approval
EMC conformity
Placard marking
914.5 MHz
+0 dBm (1mW)
FM, deviation +/- 30 kHz
FCC part 15.249
DBI-TX2
FCC ID: TDJGC132926
Code: NNNNN
37 milliseconds
2.3 seconds
0.016
Transmit duration
Transmit repetition interval
Transmit duty cycle
2.5. Power supply
Power supply
Cell life (on)
Cell life (off)
Lithium cell replace interval
CR2450 3 Volt Lithium Cell
> 1000 hours
> 10000 hours
1 years
2.6. RF transmit control
Transmit on differential
temperature threshold,
(probe – box).
Transmit off differential
temperature threshold,
(probe – box).
Transmit on minimum
duration
> 10 °F
<= 10 °F
5 minutes
DBI-TX2 User Manual Issue US1
Page 7/11
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 8/11
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 9/11
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 10/11
5.2.
Approved service agents
Name
Location
Contact
DigiTool AB
Box 6190
100 00 Stockholm
Sweden
tel +46 8 343410
Email service@digitool.se
DBI-TX2 User Manual Issue US1
Page 11/11

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