Sper scientific 840018 User manual

Sound Level Pen
840018
Instruction Manual

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TABLE OF CONTENTS
1. INTRODUCTION . . . . . . . . . . . . . . . . . . .2
2. DESCRIPTION . . . . . . . . . . . . . . . . . . . . 3
3. OPERATING INSTRUCTIONS . . . . . . . . . . . 4
• PRECAUTIONS AND MAINTENANCE . . . . . . .4
• CALIBRATION . . . . . . . . . . . . . . . . . . . 4
• MEASUREMENT . . . . . . . . . . . . . . . . . . 5
• BATTERY REPLACEMENT . . . . . . . . . . . . 6
• OPTIONAL ACCESSORIES . . . . . . . . . . . . .6
4. SPECIFICATIONS . . . . . . . . . . . . . . . . . . 7
5. WARRANTY . . . . . . . . . . . . . . . . . . . . . 8
INTRODUCTION
Perfect for testing for OSHA requirements, your new
instrument meets IEC 61672:2013 Class 2. Measures
the 32 to 130 dB range in the “A” scale, simulating the
human ear response. Features a built-in calibration
adjustment, fast response time, mini size, a resolution
of 0.1 dB, Max Hold, and a low battery indicator.
Designed to meet the measurement requirements of
safety engineers, health, industrial safety o󰀩ces and
sound quality control in various environments. Comes
with instructions, wind-screen, calibration tool, and two
1.5V batteries. CE compliant.

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1
2
3
4
7
OPEN
CAL
SIZE AAA / IEC LR03
1.5V X 2
56
Power Off
Press 2 Sec
SOUND
840018
LEVEL PEN
Max Hold
1. Windscreen
2. LCD Display
3. Power On/O󰀨 & Max Hold button
4. Microphone
5. Measurement Slide Switch
6. Calibration (CAL) VR
7. Battery Cover

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OPERATING INSTRUCTIONS
Precautions and Maintenance
• Do not store or operate the instrument at high
temperatures or humidity.
• Keep the microphone dry and avoid severe shock or vibration.
• Wind blowing across the microphone can cause
measurement errors, these e󰀨ects are reduced by using
the windscreen.
• Remove the batteries if the unit is not in use for a long
period of time.
• Wipe the case with a dry cloth, do not use abrasives or solvents
Calibration
Calibrate the meter before rst use or when the reading
appears inaccurate.
If you require a certicate of calibration traceable to NIST, the
unit may be sent to Sper Scientic for servicing (fee applies).
There are two methods of calibration:
1. Internal Electrical Calibration
• With the unit on, lightly press the Battery Cover to slide it
down and o󰀨.
• Move the Measurement Slide Switch down. This
activates the built-in oscillator (94 dB 1 kHz, sine wave) for
electrical calibration of the unit.

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• The LCD displays “CAL” for about 1 second. As needed,
use the calibration tool to adjust the Calibration (CAL) VR
until “94.0dB” is displayed.
• This ends the calibration. Make sure that the
Measurement Slide Switch is returned to the “MEAS” (up)
position and the Battery Cover is reattached.
2. Acoustic calibration using a standard sound calibrator such
as Sper Scientic’s 850016.
• With the Measurement Slide Switch in the “MEAS” (up)
position, place the microphone in the calibrator.
• As needed, use the calibration tool to adjust the
Calibration (CAL) VR until “94.0dB” is displayed.
Measurement
1. Press the Power / Max Hold button to turn the meter on.
2. Point the Microphone at the noise source.
3. The LCD displays the measured sound level. Readings are
updated twice every second.
• “OVER” is displayed when the sound level is above 130dB.
• “UNDER” is displayed when the sound level is below 32dB.
4. During the measurement procedure, press the Power/
Max Hold button to freeze the measurement. “MAX” and
the measurement are displayed. When the frozen sound
level measurement is exceeded, the new maximum
measurement will be displayed. Press the Power/Max Hold
button again to exit this function.
5. To turn the unit o󰀨, press and hold the Power/Max Hold
button for 2 seconds.

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Battery Replacement
Replace the battery when the low battery icon is displayed.
Press the Battery Cover to slide it down and o󰀨. Insert two
1.5V batteries, paying attention to the polarity as indicated in
the compartment. Reattach the cover.
Optional Accessories
850016 - Acoustical Calibrator
840091 - Wind Screen Replacement

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SPECIFICATIONS
Range 32 dB to 130 dB
Resolution 0.1 dB
Accuracy ±1.5 dB (under reference
conditions, 94 dB @1 kHz )
Frequency 31.5 Hz to 8 KHz in the
"A" weighting.
Time Weighting FAST
Operating Temperature 32 to 104°F (0 to 40°C)
Operating
Humidity
10 to 90% RH
Storage Temperature 14 to 140°F (-10 to 60°C)
Storage Humidity 10 to 75% RH
Display Update 0.5 seconds
Microphone 1/2" electret
condenser microphone
Dimensions 8.1" L × 1.7" W × 1.0" H
206 × 42 × 25 mm
Weight 0.22 lbs, 100 g with batteries
Battery Life Approx. 20 hours Alkaline

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WARRANTY
Sper Scientic warrants this product against defects
in materials and workmanship for a period of ve (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 Scientic product will be substituted if available.
This warranty does not cover probes, batteries, battery
leakage, or damage resulting from accident, tampering,
misuse, or abuse of the product. Opening the meter to
expose its electronics will void the warranty.
To obtain warranty service, ship
the unit postage prepaid to:
SPER SCIENTIFIC LTD.
8281 E. Evans Rd., Suite 103
Scottsdale, AZ 85260
The defective unit must be accompanied by a
description of the problem and your return address.
Register your product online at www.sperwarranty.com
within 10 days of purchase.
rev. 2/22/2018