LI-COR Li-189 Instruction Manual
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LI-COR Li-189 Instruction Manual

Quantum/radiometer/photometer
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Summary of Contents for LI-COR Li-189

  • Page 2: Operating Manual

    LI-189 Quantum/Radiometer/Photometer Operating Manual Publication Number 9003-61 March, 1990 LI-COR, Inc. P.O. Box 4425/4421 Superior Street Lincoln, Nebraska 68504 Phone: (402) 467-3576 FAX: (402) 467-2819 Toll-free 1-800-447-3576 (U.S. & Canada)

  • Page 3: How To Use This Manual

    LI-189 Quantum/Radiometer/Photometer. Read both the general information and the operating instructions before using the LI-189. Information on type 'SA' sensors used with the LI-189 can be found in the LI-COR Radiation Sensors instruction manual for type SA sensors.

  • Page 4: Table Of Contents

    1.3 Accessories ............. Section 2. Operation 2.1 Using the Keypad ........... 2.2 Sensor Calibration........... 2.3 Configuring the LI-189 ........12 2.4 Converting Units ..........14 2.5 Changing Default Power-Up Units ....15 2.6 Power Requirements ........18 APPENDIX A. Specifications...

  • Page 5: Section 1. General Information

    Calconnector (Calibration connector) is detached from the BNC connector. LI-COR type 'SZ' radiation sensors are not compatible with the LI-189; they may, however, be fitted with a BNC con- nector. Contact LI-COR for further information. Recalibration of all LI-COR radiation sensors is rec-...

  • Page 6: Accessories

    General Information Complete information concerning the sensors that can be used with the LI-189 is found in the type 'SA' LI-COR Radiation Sensors instruction manuals. In addition, several technical reports on LI-COR sensors are available. These include a report entitled "Radiation Measurements", which...
  • Page 7 General Information 2003S Mounting and Leveling Fixture: The 2003S is for use with all LI-COR terrestrial type sensors. 2222SB Extension Cable For use with all LI-COR ter- restrial type sensors. Available in 15.2 m (50 ft), 30.4 m (100 ft), or custom lengths to 304 m (1000 ft).

  • Page 8: Section 2. Operation

    Operation 2.1 Using the Keypad The LI-189 utilizes a 5-key keypad (below), which functions as follows: Quantum/Radiometer/Photometer HOLD CALIBRATE UNITS MULT Model LI-189 Power ON.
  • Page 9 General Information Power OFF. The LI-189 must be turned off manually. There is no time-delayed auto- matic shut-off on the LI-189. Retains the current reading on the display until the key is pressed again. HOLD HOLD Used to enter the sensor calibration multi- plier.

  • Page 10: Sensor Calibration

    (ground) in the coaxial cable is positive instead of negative. Since the Calibration Multiplier is unique for each sensor, it must be entered into the LI-189 each time the sensor is changed or recalibrated (see Section 2.3). N O T E : When using the LI-189, always enter the Calibration Multiplier, n o t the Calconstant.
  • Page 11 "in water" operation. Use the multiplier that is appropriate for your application. If the calibration constant for your sensor has been lost or misplaced, it can be obtained from LI-COR by providing the serial number of the sensor.
  • Page 12 Sensor Calibration Converting Calconstants to Multipliers For LI-COR sensors that are not type 'SA' (i.e, type 'SB', etc.), the calibration multiplier must be calculated from the calibration constant given on the certificate of calibration. EXAMPLE: Calculate the multiplier for a LI-190SB Quantum sensor with a calibration constant of 8.0...

  • Page 13: Configuring The Li-189

    Kilolux Photometric footcandles 3. Turn the small calibration screw on the top end of the LI-189 (Figure 2-1) until the display reads the value of the calibration multiplier. Press the key again, MULT and the LI-189 is calibrated for the attached sensor.
  • Page 14 NOTE: If a single LI-COR radiation sensor is purchased with the LI-189, the calibration multiplier will be entered at the factory, allowing for immediate use of the sensor. If more than one sensor is purchased, verify that the multiplier entered into the LI-189 matches the multiplier of the sensor you intend to use.

  • Page 15: Converting Units

    Configuration 2.4 Converting Units The LI-189 with an attached Photometric sensor can display in units of lux (Klux) or footcandles. However, no units conversions are performed. The Calibration Multiplier must be entered in the same units as those you wish to display. To convert lux to footcandles, or vice versa, use the following conversion factors: 1 lux = 0.0929 fc, or...

  • Page 16: Changing Default Power-Up Units

    (µ mol s if no sensor was purchased). To change the default power-up units, follow these steps: 1. Remove the 4 screws from the corners of the LI-189 back panel. 2. Locate the two units jumpers on the circuit board (see Figure 2-2).
  • Page 17 Configuration Figure 2-2. Location of jumpers for changing default power-up units.
  • Page 18 Configuration µmol s (Quantum) (Pyranometer) footcandles (Photometric) lux (Photometric) Figure 2-3. Position of jumpers to change default power-up units.

  • Page 19: Power Requirements

    The battery compartment is accessed through a slide-out panel on the back of the instrument case. Although typical battery life is more than 200 hours of continuous operation, it is dependent upon the storage tem- perature. Do not store the LI-189 at high temperatures.

  • Page 20: Appendix A. Specifications

    20 hours battery life remaining. Size: 14 L × 7.7 W × 3.8 cm D (5.5" × 3" × 1.5"). Weight: 0.26 kg (0.57 lbs). Sensors: Any LI-COR sensor with BNC connector; Quantum, Pyranometer, or Photometric. Warranty: 1 year parts and labor.
  • Page 21 LI-189 Range and Resolution: Sensor Type Range Resolution 0.01 µmol s 0-199 µmol s Quantum -1999 -19999 Radiometric 0.001 W m 0-19 W m 0.01 -199 -1999 0.1 lux 0-1999 lux Photometric 1 lux -19999 lux 0.01 klux 0-199 klux 0.01 fc...

  • Page 22: Appendix B. Conversion Table

    Appendix B. Conversion Table Type of Instantaneous Measurement Measurements 1.0 µm s = 1 µE s Quantum = 6.022 • 10 photons s = 6.022 • 10 quanta s cm - = 6.022 • 10 quanta s = 1.433 • 10 Radiometric 1 W m cal cm...

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