York Survey Supply 343520 User manual

Code: 343520
Operating
Instructions
Ref:.. \operat98\instructions 18\343520.qxp 05-01-18 ©York Survey Supply Centre 2018
Prospect House
George Cayley Drive
Clifton Moor
York
England
YO30 4XE
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Compact 4-in-1
Environment Meter

©York Survey Supply Centre 2018Ref:.. \operat98\instructions 18\343520.qxp 05-01-18
Compact 4-in-1
Environment Meter
1. INTRODUCTION
The 4-in-1 digital multi-function environment meter has been
designed to combine the functions of Sound Level Meter, Light
Meter, Humidity Meter and Thermometer.
It is an ideal multi-function environment meter instrument with
scores of practical applications for professional and home use.
The sound level function can be used to measure noise in
factories, schools, offices, airports, home, etc. checking
acoustics of studios, auditoriums and hi-fi installations. The
light function is used to measure illuminance in the field. It is
fully cosine corrected for the angular in the meter is a very
stable, long life silicon diode. The humidity/temperature uses
a humidity/semiconductor sensor and -type thermocouple.
This operating manual contains general information and
specifications.
2. FEATURES
• 4 functions measure sound level, light, humidity and
temperature.
• 3½ large LCD display with units of Lux, °C, %RH and dB
indication.
• Easy to use with single function switch operating, pocket
size and lightweight.
• Sound level measures from 35dB to 100dB for A and C
weighting checking wigh 0.01 lux to 20,000 lux.
• Humidity measurement from 25%RH to 95%RH resolution
and fast time response.
3. SPECIFICATIONS
Display: 1999 counts LCD display with function of Lux, °C,
%RH and dB indication
Ov r-rang : “OL” mark indication
Low batt ry indication: The “BAT” is displayed when the
battery voltage drops below the
operating level
M asur m nt rat : 1.5 times per second nominal
Storag t mp ratur : -10°C to 60°C (14°F to 140°F)
at < 80%RH
Auto pow r off: Meter automatically shuts down after
approx. 10 minutes of inactivity.
Pow r: 1x standard 9V NEDA 1604 or 6F22 battery
Dim nsions: 121.5(H) x 60.6(W) x 40(D)mm
W ight: Approx. 280g including holster
Sound Level
Measurement range: 35-100dB
Resolution: 0.1dB
Typical instrument frequency range: 30Hz - 10Hz
Frequency weighting: A and C weighting
Time weighting: Fast
Accuracy: ±3.5dB at 94dB sound level, 1kHz sine wave
Microphone: Electric condenser microphone
Light
Measuring range: 20, 200, 2000, 20000lux
(20000lux range reading x10)
Overrate display: Highest digit of “1” is displayed
Accuracy: ±5% rdg + 10 dgts (calibrated to standard
incandescent lamp at colour temperature 2856 )
Repeatability: ±2%
Temperature characteristic: ±0.1%/°C
Photodetector: One silicon photo diode with filter
Humidity/Temperature
Measurement Range:
Humidity: 25%~95%RH
Temperature: -20°C ~ +200°C, -20°C ~ +1300°C
Resolution: 0.1%RH, 0.1°C, 1.0°C
Accuracy (after calibration):
Humidity: ±5%RH (at 25°C, 35% ~ 95%RH)
Response time of the humidity sensor: approx. 6 min
Temperature:
±3%rdg ±1°C (at -20°C to +200°C)
±3.5%rdg ±2°C (at -20°C ~ +1300°C)
Input protection: 60Vdc or 24Vac rms
5. PANEL DESCRIPTION
1. LCD display: 3½ digits with units of Lux, x10 Lux, °C,
%RH, dB and low battery “BAT” indication
2. Power/Function/Range Switch: turn power on (or off) and
select measurement function and ranges.
3. Microphone: Electric condenser microphone inside
4. Photo Detector: Long life silicon photo diode inside
5. Humidity and Temperature: Humidity Sensor and
Semiconductor Sensor inside
6. Temperature Terminal: Insert the temperature probe in this
terminal
6. OPERATING INSTRUCTIONS
Measuring Sound Level
1. Turn the power/function/range switch to “dB” position.
2. Remove the meter and face the microphone to the sound
source in a horizontal position.
3. The • A,C-weighting curve is nearly uniform over the
frequency range from 30 to 10,000Hz thus giving an
indication of overall sound level.
4. The Fast response is suitable to measure short bursts and
peak values from sound source.
5. The sound level will be displayed.
6. Note: Strong wind (over 10m/sec) striking the microphone
can cause misreading for measurement in windy locations,
a windscreen should be used in front of microphone.
Measuring Light
1. Turn the power/function/range switch to select the “lux”
scale and set the range to desired (“lux” or “x10 lux”)
range.
2. Remove the meter and face the photo detector to the light
source in a horizontal position.
3. Read the illuminance nominal from the LCD display.
4. Over-range: If the instrument only displays one “1” in the
M.S.D. the input signal is too strong and a higher range
should be selected.
5. When the measurement is completed, replace the photo
detector from the light source.
6. Spectral sensitivity characteristic: To the detector, the
applied photo diode with filters makes the spectral
sensitivity characteristic almost meet C.O.E. (International
Commission on Illumination) photopia curve V(l) as the
following chart describes.
Wavelength (nm)
R comm nd d Illumination
Locations Lux
*Office
Conference Room, Reception Room 200~750
Clerical Work 700~1,500
Typing Drafting 1,000~2,000
*Factory
Packing Work, Entrance Passage 150~300
Visual Work at Production Line 300~750
Inspection Work 750~1,500
Electronic Parts Assembly Line 1,500~3,000
*Hotel
Public Room, Cloakroom 100~200
Reception, Cashier 200~1,000
*Store
Indoors Stairs Corridor 150~200
Show Window, Packing Table 750~1,500
Forefront of Show Window 1500~3,000
*Hospital
Sickroom, Warehouse 100~200
Medical Examination Room 300~750
Operating Room
Emergency Treatment 750~1,500
*School
Auditorium, Indoor Gymnasium 100~300
Classroom 200~750
Laboratory, Library, Drafting Room 500~1,500
Measuring Humidity/Temperature
1. Humidity M asur m nt:
1. Set the power/function/range switch to “%RH” position.
2. Then the display will show the humidity reading value
(%RH) directly.
3. When the tested environment humidity value changes,
the meter requires a few minutes to get a stable “%RH”
reading.
Warning: Don’t expose the humidity sensor to direct
sunlight. Don’t touch or manipulate the humidity sensor.
2. T mp ratur M asur m nt:
1. Set the power/function/range switch to “0.1°C” or “1°C”
and “0.1°F” or “1°F” position.
2. Then the display will show the environment temperature
reading (°C/°F) directly.
3. Insert the temperature probe into the -type thermocouple
socket.
4. Touch the end of the temperature sensor to the area or
surface of the object to be measured. The display will
show the temperature reading value (°C/°F) directly.
Warning: When function switch on temperature “0.1°C” or
“1°C” and “0.1°F” or “1°F” range, never attempt a voltage
measurement with the test leads inserted into the -type
thermocouple socket. You might be injured or damage the
meter.
7. MAINTENANCE
Battery replacement
If the sign “BAT” appears on the LCD display, it indicates that
the battery should be replaced. Remove screws on the back
cover and open the case. Replace the exhausted battery with
a fresh one (9V NEDA 1604, 6F22 or equivalent).