Sper scientific 840015 User manual

TYPE 1 Sound Meter
840015
Instruction Manual

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CONTENTS
1. Introduction.............................................................................. 3
2. Panel Description..................................................................... 3
3. Operating Instructions ............................................................. 4
3-A. Measuring Procedure
3-B. General Applications Settings
3-C. Signal Output
3-D. Precautions
4. Calibration................................................................................ 5
5. Battery Replacement............................................................... 5
6. Frequency Weighting (A and C) Characteristics ..................... 6
7. Time Weighting (Fast and Slow) Characteristics..................... 6
8. Specifications........................................................................... 7
9. Warranty .................................................................................. 8

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1. Microphone
2. Threaded Microphone Cap
3. Overload indicator
4. Display
5. Range selector
6. Power/Calibration selector
7. Time Weighting selector
8. Max Hold/Instant selector
9. Calibration Adjustment
10. Reset button
11. Frequency Weighting selector
12. Signal Output Terminal
1. INTRODUCTION
Your new instrument meets IEC61672 and ANSI S1.43 specifications for
a Type 1 Sound Meter. It covers the 30 ~ 130 dB range in both the
A and C decibel frequency weighting scales, with 0.1 dB resolution
and an accuracy of ±1 dB (63 Hz ~ 4 kHz).
This meter can be acoustically calibrated in compliance with OSHA, using
Sper Scientific’s Acoustical Calibrator 850016 (or equivalent). Features
include a built-in calibration adjustment, easy to read LCD display, fast or
slow time weightings, maximum hold function, low battery indicator, AC
output and a reset button. CE compliant.
Accessories include a windscreen, calibration tool, a carrying case,
instruction manual and batteries.
2. PANEL DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12

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3. OPERATING INSTRUCTIONS
3-A. Measurement Procedures
 Slide the POWER (6) selector to the "I" (on) position.
 For general applications, slide the MAX HOLD / INSTANT (8) selector to
the INSTANT position.
 To freeze the displayed reading, slide the MAX HOLD / INSTANT (8)
selector to the MAX HOLD position.
 Press the RESET (10) button once to reset maximum hold to the current
reading.
 Slide the FREQUENCY WEIGHTING (11) selector to the "A" or "C"
position. The "A" frequency weighting simulates human ear response.
During an environmental sound level measurement, select the "A"
weighting. The "C" weighting approximates a flat response. Typically,
"C" is used to check the noise of machinery where the target sound level
is already known. (See Frequency Weighting Characteristics, page 6.)
 Slide the TIME WEIGHTING (7) selector to the "F" (fast) or "S" (slow)
position. For general applications, select "F" which simulates the human
ear's response time. The "S" setting is used to obtain an average of
vibrating sound levels.
 Find the appropriate measuring range using the RANGE (5) selector. If
the OVERLOAD INDICATOR (3) appears in the upper-left display, slide
the RANGE (5) selector to another setting.
 Point the microphone at the sound source. The sound level will be
displayed in decibels (dB).
 When finished, slide the POWER (6) selector to the "O" (off) position.
3-B. General Application Settings
 Set POWER / CALIBRATION (6) selector to "I" (on).
 Set TIME WEIGHTING (7) to "F".
 Set MAX HOLD / INSTANT (8) selector to INSTANT.
 Set FREQUENCY WEIGHTING (11) to "A".
 Set RANGE (5) selector to the appropriate range.
3-C. Signal Output
The 3.5 mm diameter SIGNAL OUTPUT (12) terminal may be used to
connect the unit to an external device (analyzer, recorder, controller, etc).
3-D. Precautions
 Do not store or operate the unit in high temperatures or in a high
humidity environment for long periods.
 Keep the microphone dry and avoid intense vibrations.

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4. CALIBRATION
The meter's CALIBRATION ADJUSTMENT (9) is located on the front panel.
The meter has a built-in internal standard of 94 dB/1 KHz. Use the following
procedures to calibrate the instrument before operating for the first time, or
when the meter has not been in use for awhile.
Internal Calibration:
 Slide the POWER (6) selector to the CAL. Position.
 Slide the RANGE (5) selector to the 60 ~ 100 dB position.
 Slide the TIME WEIGHTING (7) selector to "F".
 Slide the FREQUENCY WEIGHTING (11) selector to "A".
 Use the calibration screw driver to turn the CALIBRATION
ADJUSTMENT (9) until the display reads 94.0.
External Calibration:
Use Sper Scientifics' Acoustical Calibrator 850016 (or equivalent) to
calibrate the unit, including the microphone, in compliance with OSHA.
 Slide POWER (6) selector to the "I" (on).
 Turn on the acoustical calibrator and place it onto the Sound Level
Meter's MICROPHONE (1).
 Slide the RANGE (5) selector to the 60 ~ 100 dB position.
 Slide the TIME WEIGHTING (7) selector to "F".
 Slide the FREQUENCY WEIGHTING (11) selector to "A".
 Use the calibration screw driver to turn the CALIBRATION
ADJUSTMENT (9) until the display reads 94.0.
5. BATTERY REPLACEMENT
Replace the batteries when "BAT" is displayed. Accurate measurements
may be made for several hours after the low battery indicator appears.
Replace the batteries with 2 new heavy duty 9V batteries.

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Frequency A Weighting C Weighting Tolerance
(IEC 61672
Class 1)
31.5 Hz -39.4 dB -3 dB ± 2.0 dB
63 Hz -26.2 dB -0.8 dB ± 1.5 dB
125 Hz -16.1 dB -0.2 dB ± 1.5 dB
250 Hz -8.6 dB 0 dB ± 1.4 dB
500 Hz -3.2 dB 0 dB ± 1.4 dB
1 kHz 0 dB 0 dB ± 1.1 dB
2 kHz +1.2 dB -0.2 dB ± 1.6 dB
4 kHz +1 dB -0.8 dB ± 1.6 dB
8 kHz -1.1 dB -3 dB +2.1 dB
-3.1 dB
6. FREQUENCY WEIGHTING (A and C) CHARACTERISTICS
Tolerance
(ANSI S1.43
Type 1)
± 1.5 dB
± 1.0 dB
± 1.0 dB
± 1.0 dB
± 1.0 dB
± 1.0 dB
± 1.0 dB
± 1.0 dB
+1.5 dB
-6.0 dB
12.5 kHz -4.3 dB -6.2 dB +3.0 dB
-6.0 dB +3.0 dB -6.0 dB
16 kHz -6.6 dB -8.5 dB +3.5 dB
-17.0 dB +3.0 dB -no limit
Time Weighting Max. response ref.
continuous signal Tolerance (IEC 61672 Type 1)
F (Fast) -1.0 dB + 1.0 db
S (Slow) -4.1 dB ± 1.0 db
Tested with signal on 1000 Hz/94 dB.
7. TIME WEIGHTING (Fast and Slow) CHARACTERISTICS

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8. SPECIFICATIONS
Display 18 mm (.0.7") LCD 3¼ digits
Function dB ( A and C Frequency weighting), Time
weighting (Fast, Slow), Max. hold, AC Output
Measurement Range 30-70 dB, 60-100 dB, and 90-130 dB
40 dB on each step, with overload indicator
Resolution 0.1 dB
Accuracy (23 ± 5°)
Frequency weighting meets ANSI S1.43
calibration input signal on 94 dB 31.5 Hz ~ 8
kHz), then the accuracy of "A" weighting is
specified as:
31.5 Hz - ± 1.5 dB, 63 Hz - ± 1 dB
125 Hz - ± 1 dB, 250 Hz - ± 1 dB
500 Hz - ± 1 dB, 06 kHz - ± 1 dB
2 kHz - ± 1 dB, 4 kHz - ± 1 dB
8 kHz - + 1.5 dB to - 3 dB
12.5 kHz - + 3dB to - 6dB
16 kHz - + 3dB to - No Limit
Frequency 31.5 Hz to 16 kHz
Microphone 1/2" standard size electric condenser
microphone. Threaded microphone cap
unscrews for microphone replacement.
Time weighting
(Fast/Slow) Fast (F): t = 125 ms
Slow (S): t = 1000 ms
Internal Calibration Built-in internal calibration on front panel.
Calibrated via internal 94 dB/1kHz square wave
generator
Output Signal AC 750 mVrms corresponding to each
range step
Output Terminal 3.5 mm diameter jack
Operating Environment. 0° ~ 50°C (32° ~ 122°F) and less than 80% RH
Power Supply DC 9V battery x 2PCs, 0006P, MN1604 (PP3) or
equivalent, heavy duty or alkaline type
Power Consumption Approximately DC 17mA
Weight 1 lb (460g) with battery
Dimension 10½ x 3½ x 1½" (260 x 87 x 36 mm)
Optional Accessories
840091 Wind Screen Replacement
840092 Bench-Top Tripod
840093 Field Tripod
850016 Acoustical Calibrator

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Sper Scientific warrants this product against defects in materials and
workmanship for a period of five (5) years from the date of purchase, and
agrees to repair or replace any defective unit without charge. If your model
has since been discontinued, an equivalent Sper Scientific product will be
substituted if available. This warranty does not cover probes, batteries or
damage resulting from accident, misuse, or abuse of the product. In order to
obtain warranty service, ship the unit postage prepaid to:
SPERSCIENTIFICLTD.
7720 East Redfield, Suite 7
Scottsdale, Arizona 85260
[phone]
The defective unit must be accompanied by a description of the problem
and your return address. Register online at www.sperscientific.com or return
your warranty registration card within ten (10) days of purchase.
Rev. 1/09/12
9. WARRANTY