Digitool Instruments GC132926 Hot air balloon wire less temp gauge User Manual 565432

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Document ID	565432
Application ID	GIpe0KBtpfqi4jDZUvBQlQ==
Document Description	transmitter dbitx1 user manual
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Document Type	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 06:00:52
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Document Title	Microsoft Word - 565432.DOC
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Document Author:	Administrator

DBI-TX1 User Manual
U.S. Version
Free Balloon Envelope Temperature
Wireless Transmitter
DBI-TX1 User Manual Issue US3
Page 1/12
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-TX1 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-TX1
RF
DigiTool Instruments Free Balloon Flight Instrument
DigiTool Instruments Envelope Temperature
Transmitter.
Radio Frequency
DBI-TX1 User Manual Issue US3
Page 2/12
Table of Contents
1.
DESCRIPTION ............................................................... 4
1.1.
1.2.
GENERAL ......................................................................... 4
DBI-TX1 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.
3.3.
3.4.
SAFETY ............................................................................ 8
ATTACHMENT ................................................................... 8
ANTENNA ......................................................................... 9
ENVELOPE TEMPERATURE PROBE ..................................... 9
4.
OPERATION ................................................................ 10
4.1.
4.2.
4.3.
DBITX1 IDENTIFICATION CODE ........................................ 10
DBITX1 IDENTIFICATION CODE PROGRAMMING ................ 10
POWER ON / OFF ........................................................... 10
5.
MAINTENANCE ........................................................... 11
5.1.
5.2.
BATTERY (LITHIUM CELL) REPLACEMENT.......................... 11
APPROVED SERVICE AGENTS .......................................... 12
DBI-TX1 User Manual Issue US3
Page 3/12
1. Description
1.1. General
• The DBI-TX1 is a wire less transmitter monitoring free hot air
balloon envelope top temperature. It transmits data to the
DBI-002 flight instrument where temperature is displayed.
• The unit consists of a sturdy aluminum enclosure fitted with a
load tape slot attachment, exiting antenna and temperature
probe wires.
• 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 box
(outside envelope) and temp probe (inside envelope)
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-TX1 User Manual Issue US3
Page 4/12
1.2. DBI-TX1 Photo
Antenna
wire
Box with
attachment
Temperature
probe wire
Temperature
probe
ID label and
location
DBI-TX1 User Manual Issue US3
Page 5/12
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
Box Length
Box Height
Box Width
Antenna wire length
Temperature wire length
Total weight
Value
50 mm
30 mm
45 mm
90 mm
254 mm
110 gram
Value
2.00 inch
1.18 inch
1.77 inch
3.50 inch
10.00 inch
3.9 ounce
2.3. Environmental ratings
Item
Box sealing class
Box temperature High
Box temperature Low
DBI-TX1 User Manual Issue US3
Value
IP65
257 °F
-22 °F
Page 6/12
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-TX1
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
> 4000 hours
> 40000 hours
4 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-TX1 User Manual Issue US3
Page 7/12
3. Installation
3.1. Safety
Always consult corresponding envelope flight manual for safe
attachment.
3.2. Attachment
The DBITX1 attaches on one supplementary load tape piece
close to the top, outside of the envelope.
The supplementary load tape is stitched or velcro mounted on
the envelope load tape.
Supplementary load tape
passing through DBITX1
attachment slot.
Supplementary load tape
Attachment slot
DBI-TX1 User Manual Issue US3
Page 8/12
3.3. Antenna
Align the antenna wire straight out horizontally along the
supplementary load tape piece and secure the position. Avoid
metallic parts in the antenna proximity (2 meters).
3.4. Envelope temperature probe
Mount the temperature probe wire through the envelope fabric
to the inside of the envelope.
DBI-TX1 User Manual Issue US3
Page 9/12
4. Operation
4.1. DBITX1 identification code
Transmitter identification
code is marked on the
box placard.
4.2. DBITX1 identification code programming
Program the DBITX1 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 DBITX1 will start transmission when a temperature
difference between the box and the temperature probe is
greater than 10 °F.
• The DBITX1 will stop transmit after 5 minutes when a
temperature difference between the box and the temperature
probe is less than 10 °F.
• For permanent power off, remove internal battery coin cell.
See “5.2 Battery replacement”.
DBI-TX1 User Manual Issue US3
Page 10/12
5. Maintenance
5.1. Battery (Lithium cell) replacement
• During normal operation, the internal battery will last for
typical 10 years. Recommended replace interval is 4 years.
• Replace battery if DBITX1 does not operate properly.
Unmount the top lid attached
by the two bolts.
Unmount CCW.
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 top lid:
• Make sure seal is correctly
placed in lid groove.
• Tighten bolts firmly.
Mount CW.
DBI-TX1 User Manual Issue US3
Page 11/12
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-TX1 User Manual Issue US3
Page 12/12

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Mod Date                        : 2005:07:26 10:00:52Z
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Creator                         : Administrator
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