Larson Davis 831, User Manual

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Model 831 Manual Optional Accessories 1-5
• WS001 3 1/2” Windscreen
• 4 Rechargeable AA NiMH batteries
Other
• Lanyard
Optional Accessories
Microphones
• 1/2” free-field pre-polarized microphone, 50 mV/Pa
• 1/2” random incidence pre-polarized microphone,
50 mV/Pa
• 1/4” free-field pre-polarized microphone, 4 mV/Pa,
for higher level and/or higher frequency
measurements (ADP043 adaptor required)
• 1/4” pressure pre-polarized microphone, 1.6 mV/Pa,
for higher level and/or higher frequency
measurements (ADP043 adaptor required)
Microphone Preamplifiers
• 1/2” ICP Low Noise Microphone Preamplifier
(requires adaptor ADP074)
• PRM2103 Outdoor Microphone Preamplifier
• PRM426A12 Outdoor Microphone Preamplifier
• 426A12-NPT Coupler, 1.5”X27”ISO228-1 to NPT
thread
Environmental Protection
• EPS2116 Environmental Shell, protects microphone
and preamplifier from rain and wind with mounting
options for pipes, poles, and most tripods
• EPS2106-2 Environmental Shell, protects
microphone and preamplifier from rain and wind
and used with tripod TRP003
• EPS2108-2 Environmental Shell, protects
microphone and preamplifier from rain and wind
and used with tripod TRP002
• EPS029-831 Weather-proof enclosure for remote
noise monitoring; includes two batteries and
microphone mast