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2. INTRODUCTION
2.1 Inspection
Examine the shipping carton for any sign of damage. Inspect the
unit and any accessories for damage. If there is any damage then
consult your distributor immediately.
2.2 Description
The Martindale SPC70 has the following functions and features:
Complies with BS EN 60942, Class 2
94dB and 114dB output at 1kHz
Fits 1 inch and ½ inch (using adaptor) diameter microphones
Low battery indication
2.3 Accessories (included)
The SPC70 comes with the following accessories:
1 x 9V PP3 battery
½ inch microphone adaptor
Carry case
Instructions
2.4 Battery Installation
Refer to Section 4.1 (Battery Replacement) for the battery
installation instructions for the SPC70.
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3. OPERATION
3.1 1 SPC70 Elements
3.2 Low Battery Indication
If the
Power ON/Low Battery
LED illuminates RED, the battery
needs replacing as output sound pressure level accuracy can no
longer be guaranteed (See section 4.1 Battery Replacement).
3.3 Testing/Adjusting a Sound Level Meter
Insert the cavity of the SPC70 over the microphone of the sound
1
Power and low battery LED
2
Power and output level switch
3
Transducer assembly with 1 inch
cavity for microphone insertion
4
½ inch microphone adaptor
5
Battery cover
5
level meter being tested / adjusted.
If the sound level meter has a ½ inch microphone, the ½ inch
microphone adaptor should first be inserted into the cavity of the
SPC70.
Set the SPC70 switch to the 94 dB or 114 dB position as required,
and set the controls of the sound level meter being checked /
adjusted in accordance with the manufacturer’s instructions and
power it on.
If required make any adjustment to the sound level meter in
accordance with the manufacturer’s instructions.
Switch off the SPC70 after use to conserve the battery.
3.4 Testing Considerations
Make sure the sound level meter microphone is properly seated into
the SPC70 microphone cavity. If the ½ inch microphone adaptor is
used make sure it is properly seated.
High ambient sources of noise or vibration may cause incorrect
readings. In such circumstances it is advisable to make any tests
with the SPC70 set to the 114 dB output sound pressure level.
Always use the certified values for the SPC70 when testing or
adjusting a sound level meter.
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4. MAINTENANCE
4.1 Battery Replacement
The battery compartment is underneath the unit.
Undo the screw securing the battery cover and lift off the battery
cover.
Remove the old battery and replace with a new 9V battery (IEC
6LR61, NEDA 1604A), observing correct polarity.
Replace the battery cover and secure with the screw.
4.4 Calibration
To maintain the integrity of measurements made using your
instrument, Martindale Electric recommends that it is returned
at least once a year to an approved Calibration Laboratory for
recalibration and certification.
Martindale Electric is pleased to offer you this service. Please
contact our Service Department for details.
Email: [email protected]
Tel: 01923 650660
4.3 Cleaning
If contamination is found, clean with a damp soft cloth and if
necessary a mild detergent or alcohol. Do not use abrasives,
abrasive solvents, or detergents which can cause damage to the
unit. If a mild detergent is used, the unit should subsequently
be thoroughly cleaned with a water dampened soft cloth. After
cleaning, dry and allow to remain in a dry environment for 2 hours
before use.
