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Related Manuals for YOKOGAWA 51001
Summary of Contents for YOKOGAWA 51001
- Page 1 51001 User’s Digital Manual Illuminance Meter RG102 5th Edition Apr. 2007...
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Page 2: Table Of Contents
CONTENTS Overview ...................... 2 Prior to Use ....................3 Operation ...................... 5 Illuminance Measurement ................11 Data Hold ..................... 12 Timer Hold ................... 13 Range Hold ..................13 Deviation Display ................14 Data Output ....................16 Recorder Output (Analog Output) .............. 19 Separation of Light Detector .............. -
Page 3: Overview
Overview Thank you very much for purchasing our Digital Illuminance Meter. Prior to its use, thoroughly read this instruction manual to observe the correct way of use. Our digital illuminance meter is a small, lightweight meter and enables illuminance measurements with the meter separated from the light detector. The display adopts a large liquid crystal display (LCD) for ease in reading, and attention is also paid to operation key arrangement. -
Page 4: Prior To Use
Prior to Use Checking accessories After unpacking the meter, check it for appearance and its accessories. Accessories: Instruction manual: 1 Recorder output plug (JC017A): 1 Soft-sided case (RB038A): 1 One dry cell battery (9 V) in the meter. Precautions on Handling ·... -
Page 5: Optional Accessories
Calibrate the meter once every two years in order to maintain accurate measurements. Calibration is done by Yokogawa. To have the meter calibrated, consult the Yokogawa sales representative from whom you purchased the instrument or the Yokogawa sales division listed on the back of this manual. Optional Accessories... -
Page 6: Operation
Operation Components Light detector Light-detecting surface Main unit Display area /% key Power switch Range key Hand strap Data output connector AC adaptor input Figure 1. Components - 5 -... - Page 7 Measuring reference plane indication Recorder output Tripod-mounting screw connector Eject button Hold switch Battery cover Response selector Rating nameplate switch - 6 -...
- Page 8 Display Area Figure 2. All Display Elements (some are unused) Description of Elements in Display Area Element Display condition/indication 8,8.8.8,8.8.8 Digital display of measured value, calculated value, and set value AUTO POWER OFF Indicates meter in automatic power-off mode Deviation Indicates when a plug is inserted into the recorder output connector R–H Indicates range hold...
- Page 9 Prior to Operation 1. Response Time Setup The response speed of the light detector can be selected using the response selector switch. The response speed is set as described below. Set the switch to FAST or SLOW according to its application. When FAST is set, [RSPS ] appears;...
- Page 10 3. Selection of Units of Measurement (lx, fc) Since this illuminance meter conforms to the International System of Units (SI units), the lux (lx) is regarded as the reference unit. Some countries use the footcandle (fc) which is not an SI unit. For this reason, this illuminance meter provides a function to display readings converted to fc units with a unit selector switch.
- Page 11 totalized intensity of illumination and/or the comparator function is being executed, this function is automatically disabled; thus, it does not function. The function can be disabled permanently if not necessary (if the meter is used continuously). Refer to the operation procedure described in “Illumi- nance Measurement.”...
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Page 12: Illuminance Measurement
Color correction factor* Light source type Typical value of Daylight fluorescent lamp 0.994 White fluorescent lamp 0.996 Three-way fluorescent lamp 1.007 High-pressure mercury vapor lamp 0.993 High-pressure sodium vapor lamp 0.988 Standard light source B 0.996 Standard light source C 0.995 Equal-energy source (400 to 760 nm) 0.997... -
Page 13: Data Hold
3. When automatic zero adjustment is completed, [—CAL—] disappears and [0.0] appears. 4. After confirming the [0.0] display, remove the cap to start measurement. 5. After the measurement has been completed, press the switch POWER again to turn off the power, and cover the light-detecting surface with the cap for protection against stray light. -
Page 14: Timer Hold
2. Read the indication, taking the meter to a bright place or turning on a light in the room. HOLD 3. To release the lock, press the switch again. This causes D–H to disappear. Timer Hold HOLD Switch, T–H This function holds the measured value after a time set in advance has elapsed. -
Page 15: Deviation Display
The range configuration is as follows: to 99.9 to 999 to 9,99o to 99,9oo 0,ooo to 999,ooo o: dummy display (The o or o’s indicate the number of digits) Operation RANGE 1. Press the key to switch manual range; its range is fixed to the currently executing range. - Page 16 Operation 1. Measure the reference luminous intensity and then press the key. The measured value at that time is retained in memory as a reference value. This causes [ , R-H] to appear and the measured range is fixed. After that, the deviation value is displayed. 2.
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Page 17: Data Output
Data Output Digital data output and comparator output can be transferred out through the data output connector. The output data are illuminance measurement data, which are transmitted as BCD serial data conforming to our standard format. Modular jack, 6 positions Figure 7. - Page 18 Figure 9. Timing Chart Table 3. Contents of Data Data Data Output Output Start bit Measurement data 10 Measurement data overflow Function-setting data hold Measurement data sign (-) Error Measurement data 10 Lo batt (low battery voltage) Data length (48 bits) Model code Unused (illuminance meter)
- Page 19 Note · The application of this accessory could affect the immunity performance of the product and such items should be used with this consideration. · Interconnection with other apparatus is not recommended. - 18 -...
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Page 20: Recorder Output (Analog Output)
Recorder Output (Analog Output) Recorder output is connected to observation equipment (recorder, oscillo- scope, etc.), and records of illuminance variation or a light source waveform can be observed. Specifications: 999mV 5% (range fixed for full scale of each range) Load resistance of 100 k or more 1. -
Page 21: Separation Of Light Detector
4. Connect the other end of the connection cable (the plug with the YOKOGAWA logo) to the light detector and confirm that the detector is locked to the connector. 5. Turn on the power to start measurement. -
Page 22: After-Sales Servicing
If repair work is necessary because of incorrect operation, consult the Yokogawa sales representative from whom you purchased the instrument or the Yokogawa sales division listed on the back of this manual. Error Massage When “Err.1” or “Err.2” massage is indicated on the display, repair work is necessary. -
Page 23: Specifications
Specifications Class: Conformance to Class A in JIS C 1609-1: 2006 Photoelectric element: Silicon photodiode Display: Liquid crystal display (numbers up to 7 digits); with function and unit display provided; maximum effective display: 999 + (0 or 0’s to indicate the number of digit places) Overrange [OL] Low battery voltage [... -
Page 24: Characteristics Of Relative Visible-Spectrum Response
Operating temperature: Between -10 and 40 C Operating humidity: 80% R.H. or less; no moisture condensation EMC standards: EN55011: 1998 Group 1 Class B EN61326-1; 1997+A1; 1998 EN61000-3-2; 1995 EN61000-3-3; 1995 Effect of radiation immunity: Accuracy range of reading: [Rated accuracy+10% of range] for the strength of a radio-frequency electromagnetic field of 3V/m Power supply: 9-V dry cell battery 6F22 (S-006P)/6LR61 or an AC... - Page 25 These characteristics are standardized to the engineering standards of a legally certified luxmeter and to JIS C 1609 standards. The relative spectrum response of an illuminance meter S ( ) is measured in 95 wavelengths at 5-nm intervals to calculate the deviation from V ( ) (fs). This method of evaluation adopts the performance evaluation of the Commission Internationale de l’Eclairage (International Commission on Illumination) (CIE).
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Page 26: Characteristic Of Oblique Incident Light
Characteristic of Oblique Incident Light When reading a book at night, you will find that the brightness differs between reading under a lamp or light and reading a little farther from the light. At that time, you can see that the words are more legible if you turn the book toward the light. -
Page 27: Illuminance Measurements For Lighting Installations (Extract From Jis C 7612 Standards)
Illuminance Measurements for Lighting Installations (Extract from JIS C 7612 standards) For general lighting, the horizontal angle of light shall be measured to obtain an average value. Unless otherwise specified, the height of the measuring surface shall be within 85 cm from the floor, 40 cm from the tatami floor in the case of a Japanese-style room, or nearly on the surface of the floor or ground in the case of a corridor or the outdoors (If it is difficult to measure the illuminance on the floor or ground, the height shall be within... - Page 28 – – –– Em + 2E –– Figure 14. 5-point Method Figure 15. 4-point Method Also there is the method where the average illuminance of multiple divided areas is obtained directly. For details, refer to JIS C 7612. - 27 -...
- Page 29 MEMO - 28 -...
- Page 30 With reference to the equipment types in the WEEE directive Annex 1, this product is classified as a “Monitoring and Control instrumentation” product. To return unwanted products within the EU area, contact your local Yokogawa Europe B. V. office. Do not dispose in domestic household waste.
- Page 31 YOKOGAWA EUROPE B. V. (THE NETHERLANDS) Phone: 31-334-64-1611 Facsimile: 31-334-64-1610 YOKOGAWA ENGINEERING ASIA PTE. LTD. (SINGAPORE) Phone: 65-6241-9933 Facsimile: 65-6241-2606 YOKOGAWA AMERICA DO SUL S. A. (BRAZIL) Phone: 55-11-5681-2400 Facsimile: 55-11-5681-1274 YOKOGAWA MEASURING INSTRUMENTS KOREA CORPORATION (KOREA) Phone: 82-2-551-0660 to -0664 Facsimile: 82-2-551-0665 YOKOGAWA AUSTRALIA PTY.
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