Campbell T107 Product Manual
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Campbell T107 Product Manual

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Revision: 08/2019
Copyright © 1993 – 2019
Campbell Scientific, Inc.

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  • Page 1 Product Manual Revision: 08/2019 Copyright © 1993 – 2019 Campbell Scientific, Inc.
  • Page 2 Limited warranty “Products manufactured by CSI are warranted by CSI to be free from defects in materials and workmanship under normal use and service for twelve months from the date of shipment unless otherwise specified in the corresponding product manual. (Product manuals are available for review online at www.campbellsci.com.) Products not manufactured by CSI, but that are resold by CSI, are warranted only to the limits extended by the original manufacturer.
  • Page 3 Campbell Scientific reserves the right to refuse service on products that were exposed to contaminants that may cause health or safety concerns for our employees.
  • Page 4 Periodically (at least yearly) check electrical ground connections. WHILE EVERY ATTEMPT IS MADE TO EMBODY THE HIGHEST DEGREE OF SAFETY IN ALL CAMPBELL SCIENTIFIC PRODUCTS, THE CUSTOMER ASSUMES ALL RISK FROM ANY INJURY RESULTING FROM IMPROPER INSTALLATION, USE, OR MAINTENANCE OF TRIPODS, TOWERS, OR...

  • Page 5: Table Of Contents

    6.6.3.1 Changing the jumper 6.6.3.2 WindSonic attachment to crossarm 6.6.4 Rain gage 6.6.5 Pyranometer 6.6.6 Sensor connections 6.6.7 Sensor verification and clock set 6.7 Communication peripherals 6.7.1 Direct connect to T107 station 6.7.2 Phone modem Table of Contents - iv...
  • Page 6 6.7.4.4 Base radio installation 6.8 Lightning rod installation 6.9 Solar panel installation 6.10 Battery installation 6.11 Restraining cables 6.12 Sealing and desiccating the enclosure 6.13 T107 software 7. Maintenance and troubleshooting 7.1 Maintenance 7.1.1 Pole maintenance 7.1.2 Power supply maintenance 7.1.3 Desiccant 7.1.4 Sensor maintenance...
  • Page 7 Appendix A. Determining True North and wind sensor orientation A.1 Online magnetic declination calculator Appendix B. T107 maintenance log Appendix C. PS24 24 Ah power supply with 10 x 12 inch enclosure C.1 PS24 components C.2 PS24 installation Table of Contents - vi...

  • Page 8: Introduction

    1. Introduction The T107 is an automated weather station designed for irrigation scheduling in turf grass and commercial agriculture applications. A properly programmed station calculates potential evapotranspiration (ETo), which is the amount of water lost from the soil due to evaporation and plant transpiration.

  • Page 9: Precautions

    The low voltage will carry up to 152 m (500 ft) on an 18 AWG power cable. Carefully handle the T107 components during transport, installation, and cleaning. Leave the 034B wind vane in the protective cardboard sleeve until it’s ready to be installed.

  • Page 10: Initial Inspection

    3. Initial inspection Immediately upon receipt of your shipment: 1. Open shipping carton(s). Solar panel and radio frequency (RF) items (if any) will be packed in a separate box. 2. Set the large weather station carton down lengthwise on a floor or table top. 3.
  • Page 11 8. Securely tape box shut if transporting entire station to another site. 9. If at the main site, remove communication components that are installed at the calling computer. Repackage remaining components for transport to field site. FIGURE 3-3. T107 with the Met One 034B-ETM Wind Sensor, top layer Section 3. Initial inspection...
  • Page 12 FIGURE 3-4. T107, bottom layer Section 3. Initial inspection...

  • Page 13: Quickstart

    (p. 12)) 3. Install the T107 pole (Pole installation (p. 16)). 4. Place instrumentation enclosure on the T107 pole, slide the enclosure to the top of the pole, and secure it with the correct orientation (Enclosure installation (p. 19)). 5. Install the crossarm and sensors (Crossarm installation procedure (p.
  • Page 14 (4) 2.5 cm x 5 cm x 30 cm (1 in x 2 in x 12 in) stakes (2) 5 cm x 10 cm x 240 cm (2 in x 4 in x 96 in) lumber (12) 8p double-head nails (8) 16p double-head nails 6 m (20 ft) form wire 0.5 m (0.5 yard) concrete...

  • Page 15: Supplies For Power And Communications Options

    AC Power Wire, conduit, and junction boxes as needed (FIGURE 4-1 (p. 8)). FIGURE 4-1. T107 pole installation with currently-available AC power option NOTE: User supplies valve box at base of station and weatherproof enclosure for transformer (FIGURE 4-1 (p. 8)).
  • Page 16 677-2600)) or equivalent type cable (FIGURE 4-1 (p. 8)). Radio Antenna for the T107 station (Yagi antenna recommended). PS24 Power Supply and mounting kit with hangar if not using AC power (PS24 24 Ah power supply with 10 x 12 inch enclosure 83)).

  • Page 17: Siting And Exposure

    5. Siting and exposure DANGER: If any part of the weather station comes in contact with power lines, you could be killed. Contact local utilities for the location of buried utility lines before digging or driving ground rods. Selecting an appropriate site for the weather station is critical to obtain accurate meteorological data.

  • Page 18: Temperature And Relative Humidity

    5.2 Temperature and relative humidity Sensors should be located over an open, level area at least 9 m (29.5 ft) (EPA) in diameter. The surface should be covered by short grass, or where grass does not grow, the natural earth surface. Sensors should be located at a distance of at least four times the height of any nearby obstruction and at least 30 m (98.43 ft) (EPA) from large paved areas.

  • Page 19: Installation

    6.12 Sealing and desiccating the enclosure 6.13 T107 software 6.1 Base foundation installation The following components included with the T107 are used for this installation procedure: (3) 16 mm (5/8 in) anchor L-bolts (9) 16 mm (5/8 in) nuts (1) anchor template...
  • Page 20 FIGURE 6-1. T107 pole base installation 1. Construct the concrete form with 5 cm x 10 cm (2 in x 4 in) lumber and 16p nails. 2. Assemble the template and anchor bolts. For each bolt, place two nuts below and one nut above the template.

  • Page 21: Ac Power Installation Procedure

    threads should be about 1 cm (0.5 in) above the concrete (FIGURE 6-2 (p. 14)). The template must be level in two dimensions. FIGURE 6-2. Cut-away view shows anchor bolt and conduit placement in cement pad 12. Use a trowel and edger to finish. 13.
  • Page 22 3. Connect the primary leads of the power supply to the 100 to 240 VAC power source. 4. Connect a two-conductor cable to the secondary terminals of the power supply. 5. Route the cable from the power supply to the T107 enclosure according to local electrical codes.

  • Page 23: Pole Installation

    FIGURE 6-3. Position of bulkhead connectors 6.3 Pole installation The following components included with the T107 are used for this installation procedure: (1) top pole section (tapered) (1) base pole section (6) 5/8-inch washers Section 6. Installation...
  • Page 24 (1) 6 x 19 mm (1/4 x 3/4 in) hex head self-drilling screw The pole provides a support structure for mounting the T107 weather station components. The pole is designed to withstand winds of 45 m/s (100 mph). The lightning rod assembly is attached after the instrumentation enclosure is installed.

  • Page 25: Pole Grounding

    15. Tighten the three top nuts with the wrench. 6.3.1 Pole grounding The following components included with the T107 are used for this installation procedure: (1) 4 AWG ground wire (1) 8 AWG ground wire (1) copper ground lug, bolt...

  • Page 26: Enclosure Installation

    FIGURE 6-5. Close-up of ground rod and 4 AWG cable 6.4 Enclosure installation The weather station data logger, power supply, sensor connection panel, communications devices, and data retrieval peripherals are mounted in the T107 enclosure. Mount the enclosure on the pole as shown in FIGURE 6-6 (p.

  • Page 27: Crossarm Installation Procedure

    1. Remove the front lid. 2. Remove the connector cover from the back of the enclosure by loosening the Phillips screw at the bottom of the cover. 3. Loosen the mounting bracket bolts on the back of the enclosure wide enough to slide over the pole.

  • Page 28: Sensor Installation

    (pyranometer) on the south side for northern latitudes and the reverse for southern latitudes. 6.6 Sensor installation The following components included with the T107 are used for this installation procedure: (1) T107 crossarm with sensors (FIGURE 6-8 (p.

  • Page 29: Rh And Temperature Radiation Shield Installation Procedure

    FIGURE 6-8. T107 instrumentation mounted on the T107 pole 6.6.1 RH and temperature radiation shield installation procedure 1. Remove the two knurled thumb screws taped underneath the crossarm. 2. Remove the yellow shipping cap from the end of the temperature/relative humidity sensor (FIGURE 6-9 (p.
  • Page 30 FIGURE 6-9. Temperature/relative humidity sensor with yellow protective cap FIGURE 6-10. Temperature/relative humidity sensor without yellow protective cap 3. Insert the temperature/relative humidity into the radiation shield until it stops. 4. Attach the radiation shield to the underside of the crossarm using the two knurled thumb screws from step 1.

  • Page 31: Wind Sensor (Wind Sensor Option -Mw)

    6.6.2 034B Wind Sensor (wind sensor option -MW) Do the following to install the 034B Wind Sensor after the crossarm is securely installed (FIGURE 6-11 (p. 24)). FIGURE 6-11. Wind and RH/temperature sensor installation Section 6. Installation...
  • Page 32 FIGURE 6-12. 034B mounting to pipe WARNING: The wind vane can be easily damaged if dropped or bent. Leave the 034B wind vane in the protective cardboard sleeve until it’s ready to be installed. 1. Remove the alignment screw at the base of the 034B-ET (FIGURE 6-12 (p.

  • Page 33: Windsonic 2-D Ultrasonic Wind Sensor (Wind Sensor Option -Gw)

    (Changing the jumper (p. 26)). NOTE: Jumper is set at the factory if the WindSonic is ordered with the T107 station. 6.6.3.1 Changing the jumper The procedure to change the jumper follows: 1. Remove the cover of the enclosure. 2. Disconnect the ribbon cable from the CS I/O port.
  • Page 34 FIGURE 6-13. Screws that secure the electronics cover 4. Remove the electronics cover to expose the printed circuit board (PCB) (FIGURE 6-14 27)). FIGURE 6-14. Removal of the electronics cover 5. Move the jumper at the top of the PCB so that it is placed over the center and right pins (FIGURE 6-15 (p.

  • Page 35: Windsonic Attachment To Crossarm

    FIGURE 6-15. Jumper set for WindSonic1 6. Replace electronics cover. 7. Tighten screws. 8. Reattach the ribbon cable to the CS I/O port. 9. Replace enclosure cover. 6.6.3.2 WindSonic attachment to crossarm 1. Remove the three Phillips screws from the end of the white mounting shaft. 2.
  • Page 36 FIGURE 6-16. WindSonic mounting shaft 4. Slide the connector and cable up through the center of the mounting shaft. 5. Plug the cable into the sensor. The connector has a key and needs to be pushed in then rotated clockwise to lock it in place (FIGURE 6-17 (p.

  • Page 37: Rain Gage

    FIGURE 6-17. WindSonic connected to cable 6. Center the WindSonic over the three threaded screw holes on the mounting shaft and screw it in place using the three Phillips screws taken off the shaft in step 1. 7. Slide the shaft and sensor back through the U-bolt. 8.

  • Page 38: Pyranometer

    1. Pull the gold funnel up and off of the top of the rain gage. 2. Remove the rubber band holding the tipping mechanism in place (FIGURE 6-18 (p. 31)). FIGURE 6-18. Remove rubber band from tipping mechanism 3. Adjust the bolts at the bottom of the pole as needed to get the bubble level centered. 4.
  • Page 39 FIGURE 6-19. Pyranometer leveling 2. Remove the red or green shipping cap from the pyranometer (FIGURE 6-20 (p. 32)). FIGURE 6-20. Remove red or green pyranometer cap Section 6. Installation...

  • Page 40: Sensor Connections

    3. Plug the cable in the SOLAR RADIATION connector on the enclosure. Ensure that the plug is completely seated on the connector and the locking ring is turned a quarter revolution clockwise. 6.6.6 Sensor connections Each sensor cable plug attaches to a unique bulkhead connector (FIGURE 6-3 (p.

  • Page 41: Sensor Verification And Clock Set

    FIGURE 6-21. Connecting sensor cabling to enclosure 6.6.7 Sensor verification and clock set 1. Send the weather station program to the station using Campbell Scientific software such as VisualWeather, PC400, or LoggerNet. a. The station can be accessed directly using a CR1000KD keypad display at the weather station.

  • Page 42: Communication Peripherals

    RS-232 serial cable. The data logger used in the T107 station can communicate with more than one device at a time allowing troubleshooting to be done in the field with a laptop while remote communication devices are accessing the station.

  • Page 43: Phone Modem

    FIGURE 6-22. Close-up of the terminals and 9-pin ports in the T107 (battery not shown) 6.7.2 Phone modem Phone modems enable communications between the T107 enclosure and a Hayes compatible modem at your computer over a dedicated phone line. Phone line surge protection is built into the enclosure.

  • Page 44: Internal Installation Of Phone Modem

    6.7.2.1 Internal installation of phone modem NOTE: If the phone modem was ordered with the T107, skip this section and go directly to External installation of phone modem (p. 38). For installation inside the T107 enclosure, the following components are provided in the phone...

  • Page 45: External Installation Of Phone Modem

    6.7.3.1 Internal installation of short haul modem NOTE: If the short haul modem was ordered with the T107, skip this section and go directly to External installation of short haul modem (p. 40). For installing inside the T107 enclosure, the following components are provided in the short-haul...
  • Page 46 (1) Rad modem (1) Rad/SC932C mounting bracket (1) 130 cm (12 in) 4-wire patch cable Use the following procedure to install the short-haul modems (FIGURE 6-24 (p. 39) and FIGURE 6-25 (p. 40)). FIGURE 6-24. Short-haul modem mounting and connection (battery not shown) 1.

  • Page 47: External Installation Of Short Haul Modem

    6.7.3.2 External installation of short haul modem FIGURE 6-25. Short-haul modem wiring diagram Components of the short haul kit used for external connections at the T107 enclosure are: (1) 6 m (20 ft) 4-wire patch cable (2) Direct burial splice kits...

  • Page 48: Radio

    The T107 station comes with a 7 amp-hour battery that is NOT designed to handle deep discharge. Discharging the battery below 11 VDC may require battery replacement. Below are some examples of power calculations.

  • Page 49: Example Radio Configuration And Power Usage

    6.7.4.2 Internal installation of the radio NOTE: If the T107 was ordered with a radio kit, skip this section and go directly to External installation of the radio (p.
  • Page 50 The following components are provided in the radio kit for installation inside the T107 enclosure: (1) spread spectrum radio (1) internal antenna cable (1) enclosure mounting bracket The radio comes mounted to the enclosure bracket. Install the assembly as follows.

  • Page 51: External Installation Of The Radio

    FIGURE 6-27. Attach ribbon cable to radio CS I/O port 6.7.4.3 External installation of the radio The antenna should have been ordered with the radio kit. The following components are provided with the radio kit for antenna installation on the T107 pole: (1) antenna cable, 150 cm (59 in)
  • Page 52 FIGURE 6-28. Loosely wire tie antenna cable 5. Drape the antenna cable between the pole and the enclosure (FIGURE 6-29 (p. 45)). FIGURE 6-29. Loosely drape antenna cable over back of enclosure 6. Use the 2.125 stainless steel U-bolt to attach the adjustable angle mounting bracket to the pole.
  • Page 53 FIGURE 6-30. Slide antenna bracket U-bolt around back of the pole b. Put a flat washer, lock washer, and a silicon bronze nut, in that order, on the ends of the U-bolt (FIGURE 6-31 (p. 46)). c. Tighten the nuts finger tight to allow the angle bracket to rotate around the pole. FIGURE 6-31.
  • Page 54 FIGURE 6-32. Mount antenna saddle bracket NOTE: Only rotate enclosure if needed to allow aiming of the Yagi antenna to the base antenna. Keep solar radiation sensor towards the south as much as possible. Rotate wind sensor to realign as needed. 9.
  • Page 55 FIGURE 6-33. Yagi antenna mounted to saddle bracket d. Orient the Yagi antenna so it’s aimed at the base antenna. You may have to flip the adjustable angle bracket over to get the antenna and saddle bracket to point correctly in the vertical direction.
  • Page 56 FIGURE 6-34. Wire tie antenna cable to Yagi antenna and to pole j. Wire tie the antenna cable to the pole. FIGURE 6-35. Wire tie locations for omnidirectional antenna installation k. Clean up the wire ties and put the cable cover back on. Section 6.

  • Page 57: Base Radio Installation

    6.7.4.4 Base radio installation The base radio kit comes with the following items. (1) RS-232 serial data cable (1) wall adapter: 100 to 240 VAC, 50 to 60 Hz input to 12 VDC 80 0 mA output with 1.8 m (6 ft) of cable (1) radio (1) window mount antenna with 2 m (7 ft) of cable The radio needs to be connected to an RS-232 serial port on the calling computer and powered...

  • Page 58: Lightning Rod Installation

    FIGURE 6-37. A base radio installed in an office 6.8 Lightning rod installation Install lightning rod as shown in FIGURE 6-38 (p. 52) and FIGURE 6-39 (p. 52). 1. Carefully mount the lightning rod clamp to the top of the pole (FIGURE 6-38 (p.
  • Page 59 FIGURE 6-38. Lightning rod bracket installation 2. Strip 2.5 cm (1 in) from the top of the main green 10 AWG pole ground wire. 3. Insert the exposed wire into the empty clamp opening. Do not tighten the screw at this time (FIGURE 6-39 (p.

  • Page 60: Solar Panel Installation

    4. Strip 2.5 cm (1 in) from both ends of the 23 cm (9 in) piece of 10 AWG green ground wire. 5. Insert one end into the enclosure ground lug located at the top back of the enclosure. 6. Put the other end in the same clamp opening as the main grounding wire and tighten down the screw (FIGURE 6-39 (p.
  • Page 61 Table 6-1: Latitude and solar panel tilt angle Latitude Tilt angle (α) 0 to 10 degrees 10 degrees 11 to 20 degrees Latitude + 5 degrees 21 to 45 degrees Latitude + 10 degrees 46 to 65 degrees Latitude + 15 degrees >65 degrees 80 degrees FIGURE 6-41.

  • Page 62: Battery Installation

    6.10 Battery installation FIGURE 6-42. PS150 with lid open 1. Move the PS150 power switch to the OFF position (FIGURE 6-42 (p. 55)). 2. Remove the cover from the PS150 by sliding the latch up at one end of the cover and sliding the cover down and out (FIGURE 6-42 (p.

  • Page 63: Restraining Cables

    FIGURE 6-43. PS150 to T107 enclosure wiring 6.11 Restraining cables 1. Loosely wire tie power, communication, and grounding cable to the wire tie harness at the top of the back of the station (FIGURE 6-44 (p. 56)). Do NOT clip back the wire tie at this time.

  • Page 64: Sealing And Desiccating The Enclosure

    (p. 57)). 6.12 Sealing and desiccating the enclosure The T107 enclosure is supplied with two desiccant packs. The desiccant maintains a low humidity in the enclosure to minimize the chance of condensation on the instrumentation. Desiccant should be changed when the internal enclosure humidity sensor measures 50% or higher. Install...

  • Page 65: T107 Software

    A variety of different software packages are available to work with the T107 station. This section introduces software packages that can be used with the T107 station. It is not the goal to fully explain capabilities of each package. All software packages mentioned below come with...
  • Page 66 Campbell Scientific website www.campbellsci.com/downloads. VisualWeather version 3.0 or higher is designed to work with the T107 station and can be used to create programs, monitor present conditions, collect data, and create reports and graphs.

  • Page 67: Maintenance And Troubleshooting

    Rinse with clean water. 7.1.3 Desiccant Humidity is monitored inside the T107 enclosure using the Elan HM2000 RH sensor that is incorporated in the enclosure. Change the desiccant packs when the enclosure RH exceeds 50%.

  • Page 68: Sensor Maintenance

    Perform sensor maintenance at regular intervals, depending on the desired accuracy and the conditions of use. A suggested maintenance schedule is outlined below. T107 maintenance log (p. 80) provides an example of a maintenance log file for one year of station use.
  • Page 69 (p. 64)). NOTE: T107 stations began shipping January 2014 with an updated radiation shield with knurled thumb screws, using the HMP60 ETS Temp/RH sensor. All information in this document is also pertinent for the HMP50-ET, HMP60-ET, and HMP60 ETR sensors.
  • Page 70 FIGURE 7-1. Exploded view of the temperature and RH sensor (adapter not shown) 2 years Replace vane potentiometer of the 034B-ET if needed (refer to www.campbellsci.com/order/034b-et for part number and price). Contact your local Toro distributor for service. Replace enclosure gasket if necessary. Contact your local Toro distributor for service. 3 years Send the solar radiation sensor (pyranometer) for calibration.

  • Page 71: Procedure For Removing Rh Chip

    Contact your local Toro distributor for replacing the battery when voltage is approximately 2.7 V. If the lithium cell is removed or allowed to discharge below the safe level, the T107 will still operate correctly while powered. Without the lithium battery, the clock will reset and data will be lost when power is removed.

  • Page 72: Troubleshooting

    6. Cycle the power to the data logger by switching the PS150 power supply to OFF then to ON, or by disconnecting and reconnecting the battery plug. The keypad should power up and the Campbell Scientific logo and text should appear on the display. 7. Contact your local Toro distributor for service if still no response.

  • Page 73: No Response From Data Logger When Using A Communication Peripheral

    7.2.2 No response from data logger when using a communication peripheral At the data logger: 1. Make sure the battery has been installed and the power switch set to ON (Battery installation (p. 55)). 2. Use a voltmeter to measure the voltage on the 12V and G terminals (FIGURE 6-43 (p.

  • Page 74: Nan, ±Inf, Or Unreasonable Results Displayed In A Variable Or Stored In A Data Table

    3. Make sure the communication device at the computer is properly configured and cabled (Communication peripherals (p. 35)). 4. Call your local Toro distributor if still no response. 7.2.3 NAN, ±INF, or unreasonable results displayed in a variable or stored in a data table 1.
  • Page 75 Table 7-2: WindSonic Diagnostic Codes Diagnostic Status Comment ROM error Read Only Memory checksum failed Maximum Gain Questionable wind measurements Section 7. Maintenance and troubleshooting...

  • Page 76: Schematics Of Connectors

    Socketed connectors on the back of the enclosure are the mirror images of what’s shown. 8.1 Sensor schematics Schematics of T107 sensors and associated connectors are provided in FIGURES 6 2 through 6 8 for help in troubleshooting. FIGURE 8-1. Schematic of HMP60-ETS RH and Temperature Probe and connector Temp/RH Section 8.
  • Page 77 FIGURE 8-2. Schematic of 034B-ET Wind Speed and Direction Probe and connector WS/WD Section 8. Schematics of connectors...
  • Page 78 FIGURE 8-3. Schematic of WindSonic1-ET Wind Sensor and connector Temp/Sonic Section 8. Schematics of connectors...
  • Page 79 FIGURE 8-4. Schematic of CS305-ET Solar Radiation Sensor and connector Solar Radiation Section 8. Schematics of connectors...

  • Page 80: Power Schematics

    FIGURE 8-5. Schematic of TE525-ET Rain Sensor and connector Rain (Precip) 8.2 Power schematics FIGURE 8-6. Schematic of solar panel and connector Power Section 8. Schematics of connectors...

  • Page 81: Communication Modems Schematics

    8.3 Communication modems schematics FIGURE 8-7. Schematic of short haul or phone modem and connector COMM Section 8. Schematics of connectors...

  • Page 82: References

    9. References EPA, (1987). On-Site Meteorological Program Guidance for Regulatory Modeling Applications, EPA-450/4-87-013. Office of Air Quality Planning and Standards, Research Triangle Park, North Carolina 27711. WMO, (1983). Guide to Meteorological Instruments and Methods of Observation. World Meteorological Organization No. 8, 5th edition, Geneva, Switzerland. The State Climatologist, (1985) Publication of the American Association of State Climatologists: Height and Exposure Standards for Sensors on Automated Weather Stations, v.

  • Page 83: Appendix A. Determining True North And Wind Sensor Orientation

    Appendix A. Determining True North and wind sensor orientation The orientation of the WindSonic “North Arrow Markers” is found by reading a magnetic compass and applying the site-specific correction for magnetic declination; where the magnetic declination is the number of degrees between True North and Magnetic North. Magnetic declination for a specific site can be obtained from a USGS map, local airport, or through a NOAA web calculator (Online magnetic declination calculator...
  • Page 84 For example, the declination for Longmont, CO (10 June 2006) is 9.67°, thus True North is 360° – 9.67°, or 350.33° as read on a compass. Likewise, the declination for McHenry, IL (10 June 2006) is –2.68°, and True North is 0° – (–2.68°), or 2.68° as read on a compass. FIGURE A-2.

  • Page 85: Online Magnetic Declination Calculator

    A.1 Online magnetic declination calculator The magnetic declination calculator web calculator published by NOAA’s Geophysical Data Center is available at the following url: www.ngdc.noaa.gov/geomag/calculators/magcalc.shtml. This web page calculates declination based on the latitude and longitude. You can look up your site's latitude and longitude by entering the Zip Code or the Country and City, and then clicking the Get &...
  • Page 86 FIGURE A-5. NOAA calculated declination using HTML result format Appendix A. Determining True North and wind sensor orientation...

  • Page 87: Appendix B. T107 Maintenance Log

    Appendix B. T107 maintenance Sensor installation date: _______________________________ Clean/inspect rain gage sensor (recommended – weekly) Date OK/comments Date OK/comments Appendix B. T107 maintenance log...
  • Page 88 Clean/inspect rain gage sensor (recommended – weekly) Date OK/comments Date OK/comments Clean/inspect solar radiation sensor (recommended – monthly) Date OK/comments Appendix B. T107 maintenance log...
  • Page 89 Replace RH chip in the HMP60-ETS temp/RH sensor (recommended – yearly) Date OK/comments Replace desiccant bags (qty 2) inside enclosure (recommended – yearly) Date OK/comments Calibrate solar radiation sensor (CS305-ET) (recommended – every 3 years) Date OK/comments Appendix B. T107 maintenance log...

  • Page 90: Appendix C. Ps24 24 Ah Power Supply With 10 X 12 Inch Enclosure

    10 x 12 inch enclosure The PS24 Power Supply is typically used when a solar-powered T107 transmits data using a spread spectrum radio. However, the PS24 can be used for any situation where a larger capacity battery is desirable.
  • Page 91 FIGURE C-1. PS24 enclosure with PS150 and battery bracket FIGURE C-2. 24 Ah battery and battery cable Appendix C. PS24 24 Ah power supply with 10 x 12 inch enclosure...

  • Page 92: Ps24 Installation

    FIGURE C-3. Enclosure supply kit C.2 PS24 installation CAUTION: The PS24 is purposely shipped without the battery mounted in its bracket. Do not install the battery until instructed to do so. 1. Place the top enclosure bracket on the pole at approximately 10 m (3 ft) above the bottom of the pole.
  • Page 93 FIGURE C-5 86) shows the top and bottom brackets correctly positioned on the T107 pole. FIGURE C-5. Both strut clamps and brackets on T107 pole 4. Hook the enclosure on the top bracket as shown in FIGURE C-6 (p.
  • Page 94 FIGURE C-6. Top clamp hook side up 5. The bottom enclosure bracket should slide between the top lip of the bottom strut mount bracket and the notch directly below. Move the bottom bracket if necessary, then bolt the bottom bracket down (see FIGURE C-7 (p.
  • Page 95 FIGURE C-7. Enclosure mounted on T107 pole 6. The bottom enclosure bracket has a small metal locking mechanism. Push up on the small Phillips screw underneath the mechanism and slide it to the left. Once in place, put a small...
  • Page 96 FIGURE C-8. Enclosure locking mechanism 7. Install the solar panel above the PS24 enclosure, and face the solar panel south (FIGURE C- (p. 90)). Appendix C. PS24 24 Ah power supply with 10 x 12 inch enclosure...
  • Page 97 8. Throw a blanket or box over the solar panel to prevent any voltage output. 9. Route the solar panel cable and power cable coming from the main T107 enclosure into the conduit at the bottom of the PS24 enclosure.
  • Page 98 Table C-1: Solar panel or AC connections Solar panel or AC wire color Power supply connection terminal CHG or CHARGE Black CHG or CHARGE NOTE: Polarity makes no difference. Connect one wire per CHG terminal block. 12. If the charging source is a solar panel, remove the blanket or box from the solar panel once it’s wired into the CH150, PS100 or PS150 regulator.
  • Page 99 NOTE: The power cable that carries the regulated 12 VDC power from the regulator in the external enclosure to the T107 station enclosure has a two-pin connector on one end and tinned wires on the other. 13. Toggle the power switch on the regulator (CH100, PS100, CH150, or PS150) to the OFF position.
  • Page 100 NOTE: Since the power coming into the enclosure is regulated power coming from the external enclosure, the wiring inside the T107 station enclosure needs to be different than the standard wiring. 17. If this is a retrofit, inside of the ET station enclosure, wires come through the enclosure wall from the POWER connector on the back of the station that used to be wired into the charge ports of the PS100 or PS150.
  • Page 101 However, it’s often wise to change the desiccant every six months. 23. Close the lids on the external enclosure and the T107 enclosure. Appendix C. PS24 24 Ah power supply with 10 x 12 inch enclosure...
  • Page 102 INFO Global Sales & Support Network A worldwide network to help meet your needs Australia Costa Rica Southeast Asia Garbutt, QLD Australia San Pedro, Costa Rica Bangkok, Thailand Location: Location: Location: 61.7.4401.7700 506.2280.1564 66.2.719.3399 Phone: Phone: Phone: info@campbellsci.com.au info@campbellsci.cc thitipongc@campbellsci.asia Email: Email: Email:...

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