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FT3424 LUX METER Instruction Manual September 2014 Revised edition 1 FT3424A980-01 14-09H English...
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Contents Introduction .................1 Verifying Package Contents ..........2 Options (sold separately) ..........3 Safety Notes ................4 Usage Notes ................7 Overview Overview and Features ......... 11 Parts Names and Functions ......12 LCD Display ...........16 Measurement Methods Measurement Workfl ow ........19 Inserting/Replacing Batteries ......20 Attaching the strap ........22 Inspection Before Use ........24 Making Measurements ........25...
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Contents Saving Measured Values (Memory Function) ........36 Saving the measured value (MEM) ......36 Reading the measured memory data (READ) ..37 Deleting the most recently saved measured value (CLEAR) ............38 Clearing all the saved measurement data ....38 Logging Illuminance Data (Output Function) ..........39 Communicating with PC .......41...
Introduction Introduction Thank you for purchasing the HIOKI FT3424 Lux Meter. To obtain maximum performance from the product, please read this manual fi rst, and keep it handy for future reference.
In particular, check the accessories, operation keys of the panel, and connectors. If damage is evident, or if it fails to operate according to the specifi cations, contact your authorized Hioki distributor or reseller. Check the package contents as follows.
Options (sold separately) Options (sold separately) The following options are available for the instrument. Contact your authorized Hioki distributor or reseller when ordering. Connecting cable/Output cord Required when using the Use when positioning the sensor unit instrument’s output functionality. and display unit separately during use.
Safety Notes Safety Notes This instrument is designed to conform to IEC 61010 Safety Standards, and has been thoroughly tested for safety prior to shipment. However, using the instrument in a way not described in this manual may negate the provided safety features. Before using the instrument, be certain to carefully read the following safety notes.
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Safety Notes Additional information is presented below. Symbols affi xed to the instrument Indicates cautions and hazards. When the symbol is printed on the instrument, refer to a corresponding topic in the Instruction Manual. Indicates DC (Direct Current). Symbols for various standards Indicates the Waste Electrical and Electronic Equipment Directive (WEEE Directive) in EU member states.
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Safety Notes Displays when display unit and sensor unit is not connected. Accuracy We defi ne measurement tolerances in terms of f.s. (full scale), rdg. (reading) and dgt. (digit) values, with the following meanings: (Maximum display value) f.s. Indicates the maximum displayable value. This is usually the name of the currently selected range.
Verify that the instrument operates normally to ensure that no damage occurred during storage or shipping. If you fi nd any damage, contact your authorized Hioki distributor or reseller. Installation For details on the operating temperature and humidity, see the specifi...
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Usage Notes Handling the cables and cords CAUTION • Before use, verify that the insulation on cables and cords is not damaged and that no metal is exposed. If you fi nd any damage, replace the cable or cord with those specifi...
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Usage Notes IMPORTANT • Use only the specifi ed connection cables. Using a non- specifi ed cable may result in incorrect measurements due to poor connection or other reasons. • When measuring illuminance underneath a standard lighting fi xture, the display may not stabilize. In most cases, a failure to stabilize is due to fl...
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• Keep discs inside a protective case and do not expose to direct sunlight, high temperature, or high humidity. • Hioki is not liable for any issues your computer system experiences in the course of using this disc. Precautions during shipment Observe the following during shipment.Hioki cannot be responsible...
Overview 1.1 Overview and Features The FT3424 is a multifunctional, high-precision lux meter which ensures durability. Engineered for use in a wide range of fi elds and settings, including with lighting equipment, in lighting work, and in equipment management. Wide-range illuminance measurement (0.00...
Parts Names and Functions 1.2 Parts Names and Functions Front/Right Side Sensor Illuminance sensor (p. 2 5) Reference USB terminal level (mini B type) indication LCD display (p. 1 6) D/A OUTPUT terminal (p. 3 9) Operation keys (p. 1 2) Strap hole (p. ...
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Parts Names and Functions Turn on the Press and hold instrument Normal for at least 1 while pressing second and holding Power ON Power OFF Retains the Start timer hold Cancels the measured value or function (p. 3 1) auto power off cancels retention of Automatically retain function (APS).
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Parts Names and Functions Turn on the Press and hold instrument Normal for at least 1 while pressing second and holding • Save measured Continuously All LCDs light up. value in internal increases the memory memory. (p. 3 6) (p. 3 7) •...
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Parts Names and Functions Tripod mounting thread Use when mounting the sensor unit on a tripod. The hole is located exactly behind the center point of the illuminance sensor on the front of the sensor unit. (p. 3 4) Collation No. Verify that the collation numbers on the sensor unit and display unit match before use.
LCD Display 1.3 LCD Display For message displays and error displays, see “5.3 Error Display” (p. 5 4), and “5.4 Display Messages” (p. 5 5). Holds measured value. (p. 2 6, p. 3 1) Communicating with the USB. (p. 4 1) The memory function is activated.
LCD Display Auto range is activated. (p. 2 9) The output function has been activated. (p. 3 9) Represents the unit used to measure illuminance (lux). When the measured value exceeds the maximum value in each range The maximum displayable value blinks, lights up on the LCD display.
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LCD Display When using a manganese battery or nickel-hydride battery, the battery indicator may not operate properly. Power shutdown [b. Lo] When the charge is gone, blinks in the display for 3 seconds and the power is shut down automatically. ...
Measurement Methods 2.1 Measurement Workfl ow Before using the instrument, be sure to read “Usage Notes” (p. 7 ). Installation and connection Insert the batteries with the sensor cap on. As necessary, have other (p. 2 0) optional items available and ready.
Inserting/Replacing Batteries 2.2 Inserting/Replacing Batteries Before using the instrument fi rst time, insert two LR6 alkaline batteries. Before measurements, check that the battery level is suffi cient. When the battery charge is low, replace the batteries. Nickel-metal hydride batteries Nickel-metal hydride batteries can be used. However, the discharge characteristic of these batteries is different from that of alkaline batteries.
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Inserting/Replacing Batteries • The indicator appears when the battery is almost out of charge. Have a new battery handy. • When the indicator lights up continuously or fl ashes, there is no battery life remaining. Replace the battery immediately. • During USB communications and while the instrument is connected to USB bus power, the battery indicator turns off.
Attaching the strap Although you can use an R6 Manganese battery, doing so will give the instrument a shorter continuous operating time than an alkaline battery. 2.3 Attaching the strap You can attach the included strap (for instrument) and the strap for the sensor cap to the strap hole on the bottom of the display unit.
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Attaching the strap When attaching both straps Strap (for instrument) Strap for the sensor cap...
2.4 Inspection Before Use Verify that the instrument operates normally to ensure that no damage occurred during storage or shipping. If you fi nd any damage, contact your authorized Hioki distributor or reseller. Appearance check of the instrument Check item Action •...
Making Measurements 2.5 Making Measurements Put the sensor cap on. Turn on the instrument with the included sensor cap attached to the illuminance sensor. A value will be displayed on the LCD display. Press to turn on the instrument. Press [ADJ] is displayed, and zero-adjustment of all ranges will be performed.
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Making Measurements (To use a particular range to make a measurement) Press to select the range. See: “2.6 Selecting the Measurement Range” (p. 2 9) Read the measured value when it stabilizes. (When retaining the measured value) Press and read the measured value.
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Making Measurements Put the sensor cap on. When the measurement is fi nished, put the sensor cap on and turn off the instrument. Press and hold for at least 1 second to turn off the instrument. • is displayed when the measuring range is exceeded. •...
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Making Measurements is pressed without the sensor cap attached If you press without the included sensor cap attached to the illuminance sensor (when the count is equivalent to 1 [CAP] or greater), will be displayed on the LCD display. Press again after attaching the ...
Selecting the Measurement Range 2.6 Selecting the Measurement Range Auto or Manual range can be selected. • Auto range Sets the optimum range automatically in accordance with the actual measurement. (Disabled when the output function (OUTPUT) is in use.) • Manual range Sets the range and fi...
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Selecting the Measurement Range While the measured value is retained, switching of the range can not be performed.
Applied Functionality 3.1 Retaining the Measured Value after a Set Amount of Time (Timer Hold Function) This section describes how to retain the measured value after a set amount of time has elapsed. The timer hold function is convenient when measuring low illuminance values, for example from emergency lighting or along an evacuation route.
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Retaining the Measured Value after a Set Amount of Time (Timer Hold Function) The measured value will be retained once the set amount of time has elapsed. lights up, and a continuous beep sounds for 3 sec.) When is pressed again, the hold state is canceled, and the timer hold function is not activated.
Disconnecting the Display Unit and Sensor Unit 3.2 Disconnecting the Display Unit and Sensor Unit Lux meter could be measured by disconnecting the display unit and sensor unit. Turn off the instrument. Hold the display unit and sensor unit, and pull them apart. Connect the display unit and sensor unit with L9820 Connection Cable (option).
Disconnecting the Display Unit and Sensor Unit Mounting the sensor unit on a tripod When you need to place (fi x) the sensor unit in a location while making measurements, you can mount it to a commercially available tripod. Use the mounting thread* on the back of the sensor unit. * Thread size: 1/4”...
Limiting Battery Consumption (Auto Power Off Function) 3.3 Limiting Battery Consumption (Auto Power Off Function) This function limits the battery consumption. If the instrument has not been operated for approx. 10 minutes, the power turns off automatically. In the (default setting), the auto power off function is set to enabled.
Saving Measured Values (Memory Function) 3.4 Saving Measured Values (Memory Function) The measurement result can be saved and read using the memory function. Up to 99 measured data can be saved. You can also delete saved measured values. (p. 3 8) Measured values saved in the internal memory can be downloaded to a computer using the instrument’s USB communications capability.
Saving Measured Values (Memory Function) Reading the measured memory data (READ) Memory No. Press (READ) and hold for at least 1 second. lights up.) Read mode of the measurement data saved in the internal memory starts. Select the desired memory No. using .
Saving Measured Values (Memory Function) Deleting the most recently saved measured value (CLEAR) Memory No. Press (READ) and hold for at least 1 second. lights up.) Read mode of the measurement data saved in the internal memory starts. Press (CLEAR) and hold for at least 1 second.
Logging Illuminance Data (Output Function) 3.5 Logging Illuminance Data (Output Function) You can connect the instrument to a logger or other recording instrument and have it generate voltage output based on measured values. This functionality outputs a voltage of 1 mV DC for each effective count digit in the measured value.
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Logging Illuminance Data (Output Function) Press and hold for at least 1 second to turn off the instrument. Connect the mini jack of 9094 Output Cord (option) to the D/A OUTPUT terminal of the right side of the instrument. (Set the recording instrument in advance.) Connect the banana terminal of the 9094 Output Cord to the logger or other recording instrument.
Communicating with PC 3.6 Communicating with PC Using the included USB cable, it is possible to transmit data to the PC or to control the instrument. For details, see the communications specifi cations which accompanies with the CD. Install the special PC application software on the PC. Connect to the PC.
Disabling the buzzer 3.7 Disabling the buzzer The buzzer sound is enabled when factory default settings. Turn off the power of the instrument when changing the settings. while holding down Press to turn on the instrument. [bP oFF] is displayed, and the buzzer is not activated.
Turning On the Backlight 3.8 Turning On the Backlight The LCD display includes a backlight for use when making measurements in dim locations. The backlight will activate automatically when the measured value is retained or when the measured value data stored in the internal memory is in read mode, both in low-light environments (approx.
Measurement Specifi cations 4.2 Measurement Specifi cations Accuracy Linearity ±2% rdg. (Multiply by 1.5 for display values in excess of 3,000 (Add ±1dgt. for display values that are less than 1/3 of the range.) Accuracy guarantee Display unit and sensor unit must bear the same conditions collation No.
Measurement Specifi cations Characteristic Angled incident Systematic deviation f : 3% or less light Deviation from cosine characteristics: characteristics Deviation from cosine Angle characteristics 30° ±2% 60° ±7% 80° ±25% Response time Auto range: 5 seconds or less Manual range: 2 seconds or less Temperature Deviation from value measured at 23°C (73.4°F) between -10 to 40°C (14°F to 104°F): ±3% rdg.
Output Specifi cations Characteristics Deviation in value when subjected to intermittent light for 1/2 cycle at a frequency of 100 Hz or 120 Hz : ±2% regarding rdg. intermittent light 4.3 Output Specifi cations Output method D/A output Output level 2 V/ range f.s.
General Specifi cations Auto power off Turns off the instrument approx.10 minutes after the last key operation (can be canceled). function [b. Lo] Power shutdown When the charge is gone, blinks in the display for 3 seconds and the power is shut down. Buzzer sound Emits a buzzer sound when keys are operated, when the timer hold function activates, and when it...
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IP40 (EN60529) waterproof To avoid any failure, do not allow the instrument to get wet. If the instrument gets wet, have your authorized Hioki distributor or reseller inspect or repair it, if necessary. Accessories • Instruction Manual • LR6 Alkaline battery × 2 •...
Maintenance and Service 5.1 Repair, Inspection, and Cleaning Calibrations IMPORTANT Periodic calibration is necessary in order to ensure that the instrument provides correct measurement results of the specifi ed accuracy. The calibration interval for this instrument is 2 years. It is recommended to calibrate it every 2 years for accurate measurement.
• When a malfunction of the instrument is suspected, check the information in “Before sending the instrument for repair” and then, if necessary, contact your authorized Hioki distributor or reseller. • When sending the instrument for repair, remove the batteries and pack it carefully to prevent damage during transportation.
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Troubleshooting Symptom Check and/or remedy Turning on the power Send the instrument for repair. brings up the error Refer to “5.3 Error Display” (p. 5 4) display. When nothing is connected, the error display appears. Frequently asked questions (FAQ) Question Solution Would like to perform Perform zero-adjustment.
Malfunction of the program. in the LCD display, it is ROM error necessary to repair the Err 02 Malfunction of the adjustment instrument. data. Contact your authorized Hioki distributor or EEPROM error Err 04 reseller. Malfunction of the memory data.
Display Messages 5.4 Display Messages Display Description Reference Performing zero-adjustment. p. 2 5 The battery is exhausted. p. 2 0 Replace the batteries. Disabling the buzzer. p. 4 2 Zero-adjustment cannot be performed p. 2 8 since the sensor cap in not covered. Affi...
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Appendix Appx. 1 Recommended Levels of Illumination (Reference) Suitable levels of illuminance (according to the JIS standard Z 9110). Offi ces Recommended Illuminance Place/work activity illuminance [ level [ 500 to 1000 Design rooms, offi ces, board rooms Computer rooms, conference rooms, 300 to 750 reception rooms 200 to 500...
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Recommended Levels of Illumination (Reference) Schools Recommended Illuminance Place/work activity illuminance [ level [ 1000 750 to 1500 Precision handicraft, precision experimenting 500 to 1000 Precision drawing or drafting Experiment demonstration rooms, library 300 to 750 reading rooms, nurse’s offi ce, kitchen Classrooms, gymnasium, offi...
The deviation from the comparative standards for luminosity is determined by the f ’ value of JIS standard C 1609-1:2006. Deviation from spectral luminous efficiency FT3424 Wavelength [ nm ] Graph illustrates typical characteristics. Characteristics exhibited by individual products may vary slightly. Appx.
In this instrument, the shape of the light sensor, hook etc. is so made that it can follow the cosine law closely. Ideal Characteristics cos ) FT3424 [ ° ] Incident angle Graph illustrates typical characteristics. Characteristics exhibited by individual products may vary slightly.
Other Characteristics Appx. 3 Other Characteristics Color correction factor for a general light source relative to standard illuminant A Light source Fluorescent lamp F6 1.003 Fluorescent lamp F8 1.002 Fluorescent lamp F10 1.002 High-pressure sodium lamp 1.011 Metal halide lamp H1 1.002 Metal halide lamp H2 1.003...
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