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

Digitool Instruments AB Hot air balloon wire less temp gauge 565432

Contents

transmitter dbitx1 user manual

DBI-TX1 User Manual Issue US3 Page 1/12 DBI-TX1 User Manual U.S. Version Free Balloon Envelope Temperature Wireless Transmitter
DBI-TX1 User Manual Issue US3 Page 2/12 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 DigiTool Instruments Free Balloon Flight Instrument DBI-TX1 DigiTool Instruments Envelope Temperature Transmitter. RF Radio Frequency
DBI-TX1 User Manual Issue US3 Page 3/12 Table of Contents 1. DESCRIPTION ............................................................... 4 1.1. GENERAL ......................................................................... 4 1.2. DBI-TX1 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 3.3. ANTENNA ......................................................................... 9 3.4. ENVELOPE TEMPERATURE PROBE ..................................... 9 4. OPERATION ................................................................ 10 4.1. DBITX1 IDENTIFICATION CODE........................................ 10 4.2. DBITX1 IDENTIFICATION CODE PROGRAMMING ................ 10 4.3. POWER ON / OFF ........................................................... 10 5. MAINTENANCE ........................................................... 11 5.1. BATTERY (LITHIUM CELL) REPLACEMENT.......................... 11 5.2. APPROVED SERVICE AGENTS .......................................... 12
DBI-TX1 User Manual Issue US3 Page 4/12 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 5/12 1.2. DBI-TX1 Photo Antenna wire Box with attachmentTemperature probe Temperature probe wire ID label and location
DBI-TX1 User Manual Issue US3 Page 6/12 2. Specification 2.1. Envelope thermometer accuracy Range °F Total error +/- °F -15 to 32 7 32 to 122 5 122 to 167 4 167 to 257 2 257 to 302 4 302 to 347 5 347 to 392 7 2.2. Physical dimensions Item Value Value Box Length 50 mm 2.00 inch Box Height 30 mm 1.18 inch Box Width 45 mm 1.77 inch Antenna wire length 90 mm 3.50 inch Temperature wire length 254 mm 10.00 inch Total weight 110 gram 3.9 ounce 2.3. Environmental ratings Item Value Box sealing class IP65 Box temperature High 257 °F Box temperature Low -22 °F
DBI-TX1 User Manual Issue US3 Page 7/12 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-TX1 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) > 4000 hours Cell life (off) > 40000 hours Lithium cell replace interval 4 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-TX1 User Manual Issue US3 Page 8/12 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 9/12 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 10/12 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 11/12 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 12/12 5.2. Approved service agents Name Location Contact DigiTool AB Box 6190 100 00 Stockholm Sweden tel +46 8 343410 Email service@digitool.se

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