PCB LARSON DAVIS User manual


Microphone/Preamp
Environmental Protection System
User Guide

EPS2116 User Guide i-1
Larson Davis
EPS2116
Microphone/
Preamplifier
Protection System

EPS2116 User Guide i-2
Copyright
Copyright 2021, by PCB Piezotronics, Inc. This manual is copyrighted, with all rights reserved. The manual may not
be copied in whole or in part for any use without prior written consent of PCB Piezotronics, Inc.
Disclaimer
The following paragraph does not apply in any state or country where such statements are not agreeable with local
law:
Even though PCB Piezotronics, Inc. has reviewed its documentation, PCB Piezotronics Inc. makes no warranty or
representation, either expressed or implied, with respect to this instrument and documentation, its quality, perfor-
mance, merchantability, or fitness for a particular purpose. This documentation is subject to change without
notice, and should not be construed as a commitment or representation by PCB Piezotronics, Inc.
This publication may contain inaccuracies or typographical errors. PCB Piezotronics, Inc. will periodically update
the material for inclusion in new editions. Changes and improvements to the information described in this manual
may be made at any time.
Safety
If the equipment is used in a manner not specified by Larson Davis, the protection provided by the equipment may
be impaired.
Recycling
PCB Piezotronics, Inc. is an environmentally friendly organization and encourages our customers to be environ-
mentally conscious. When this product reaches its end of life, please recycle the product through a local recycling
center or return the product to:
PCB Piezotronics, Inc.
Attn: Recycling Coordinator
1681 West 820 North
Provo, Utah, USA 84601-1341
Warranty
For warranty information, go to the Larson Davis Product Warranty page.
Contact Larson Davis
www.larsondavis.com
E-mail: [e-mail]
Worldwide Corporate Headquarters
Larson Davis - a PCB Piezotronics division
3425 Walden Avenue
Depew, NY 14043-2495 USA
Toll-free (in the US): 888-258-3222
Phone: [phone]
Fax: [phone]

EPS2116 User Guide Rev F i-3
Table of Contents
Module 1 Getting Started - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1
1.1 Product Info and Compatibility
1.2 Assembling the EPS2116
1.3 Calibrating a Microphone in the EPS2116
Module 2 Maintaining the EPS2116 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6
2.1 Replacing the Windscreen
2.2 Replacing the Desiccant
Appendix A Technical Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A-1
A.1 Standards and Safety Requirements Met By EPS2116
A.2 Included Accessories
A.3 Optional Accessories
A.4 Physical Specifications
A.5 Wind-Induced Noise
A.6 EPS2116 Correction Factors
A.7 Acoustical Response

EPS2116 User Guide Product Info and Compatibility 1
Module Getting Started
In this module:
1.1 Product Info and Compatibility - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -1
1.2 Assembling the EPS2116 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -2
1.3 Calibrating a Microphone in the EPS2116 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -4
1.1 Product Info and Compatibility
The EPS2116 is a necessary accessory that provides complete protection for
your ½-inch microphone and preamplifier against wind, rain, snow, humidity,
and physical damage.
In high humidity environments, the optional desiccant cartridges preserve the
performance of your environmentally certified preamp/mic (See Table 1.1 for
environmentally certified models). It is especially effective for back-vented
microphones. It this scenario, moist air is absorbed by the desiccant before
reaching the preamplifier and the back of the microphone. Additionally, the
built-in birdspike effectively deters birds from perching on the device.
The EPS2116 is intended to be connected on a threaded ¾-inch conduit, or a
1½-inch (38mm) speaker stand, or fastened on a mounting screw and applied to
a tripod in the field.
When used with an environmentally certified preamplifier, the EPS2116 protects
your microphone and preamplifier from the environment. However, it is only
effective if the preamplifier in use has a waterproofing o-ring installed.
Refer Table 1.1 to ensure your device is ready for use with the EPS2116.
Table 1.1 Larson Davis Preamplifiers and Compatibility
Environmental Certification service for your qualifying preamp is available by
contacting your Larson Davis representative.
Preamplifier Manufacturer Installed
o-ring?
Environmental
Certification Available to
Purchase
PRM2103 Yes Yes
PRM831 No Yes
PRMLXT1/2B/1L/2L Noa
a. This device is not compatible with an o-ring seal.
No
PRM828 No Yes
PRM902 No Yes
Birdspike
Windscreen
Top cap
Mounting
Adapter
Base
1

EPS2116 User Guide Assembling the EPS2116 2
1.2 Assembling the EPS2116
Complete each step in this section in the order it’s presented. Once assembled, the
EPS2116 can be left in place during calibration or transport.
The EPS2116 is shipped with the base and adapter in one assembly. The top cap,
windscreen, and birdspike are combined in a second assembly, as shown in Figure 1-1.
FIGURE 1-1 EPS2116 As shipped
Step 1. Follow the steps associated with Figure 1-2 to prepare the EPS2116 for use.
FIGURE 1-2 Overview of EPS2116 assembly
CAUTION DO NOT pull the
windscreen (W) upward over the
birdspike (BS).
If you need to separate the
birdspike (BS) and windscreen (W),
be sure to pull the windscreen
down and the birdspike up.
Assembly 2
Birdspike (BS)
Windscreen (W)
Top cap (TC)
Assembly 1
Base (B)
Mounting
Adapter (MA)
step 2. step 3. step 4. step 5. step 6. step 7.
Desiccant

EPS2116 User Guide Assembling the EPS2116 3
Step 2. Thread the included cable upward through the mounting adapter (MA) and
base (B) as shown in Figure 1-2, step 2.
When using the PRM831 preamplifier, complete Installing Desiccant
Cartridges (steps a–c). Alternatively, if you are using the PRM2103, desiccant is
not required. Instead, refer to the SoundAdvisor 831C Manual, section 9.13 to
choose preamp heater options.
Installing Desiccant Cartridges
a. Insert five desiccant cartridges into four of the desiccant chambers in the base.
b. Insert desiccant indicator (clear tube) into the fifth chamber.
FIGURE 1-3 Inserting desiccant indicator
TAKE NOTE When the desiccant indicator crystals change color, replace the
cartridges. Replacement cartridges are available to order from LarsonDavis.com (Part
#DSC003)
Step 3. Connect the preamplifier to the cable. (See Figure 1-4)
Step 4. Slide the preamplifier partially through the top cap, and then screw the top cap
to the base.
TAKE NOTE You should expect some resistance pushing the preamplifier partially
through the top, especially for preamplifiers with a built in o-ring.
FIGURE 1-4 Connecting the preamp
step 4.step 3.

EPS2116 User Guide Calibrating a Microphone in the EPS2116 4
Step 5. Screw the 1/2-inch microphone onto the preamplifier, and then carefully push
the preamplifier back down into the top cap until it stops and the microphone
is seated properly in the EPS2116. If your model includes a weatherproofing O-
ring, install over the preamp before screwing the microphoneas shown in
Figure 1-5.
FIGURE 1-5 Installinga weatherproofing O-ring
Step 6. Screw the birdspike (with attached rainscreen) onto the top cap.
Step 7. If the windscreen is not already in place, slide it over the birdspike until the
bottom of the windscreen is seated on the EPS2116 top.
CAUTION If you need to remove the windscreen, do not pull it off the birdspike with an
upward motion. First, unscrew the birdspike by twisting the top, then pull the
windscreen down over the bottom of the unscrewed birdspike.
1.3 Calibrating a Microphone in the EPS2116
You may calibrate a microphone without removing it from the EPS2116 as shown in this
section.
Microphone
O-ring (included with some models)
Preamp

EPS2116 User Guide Calibrating a Microphone in the EPS2116 5
FIGURE 1-6 Steps for Microphone Calibration
step 1. step 2. step 3. step 4. 5.
Step 1. Remove windscreen/birdspike by unscrewing the windscreen/birdspike
assembly from the top cap.
Step 2. Place the calibrator (CAL 200 shown) on the microphone by gently pushing
down while twisting slightly clockwise.
TAKE NOTE If needed, pull the mic/preamp upward out of the top cap, so the
microphone seats fully inside the calibrator.
Step 3. Calibrate the microphone as described in the microphone manual. When the
calibration is complete, remove calibrator by pulling up and slightly twisting
counter-clockwise.
Step 4. Replace the windscreen/birdspike assembly.

EPS2116 User Guide Replacing the Windscreen 6
Module Maintaining the EPS2116
In this module:
2.1 Replacing the Windscreen - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -6
2.2 Replacing the Desiccant - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -7
2.1 Replacing the Windscreen
FIGURE 2-1 Overview of replacing the EPS2116 windscreen
Step 1. Remove the windscreen/birdspike by unscrewing the assembly.
Step 2. Pull the windscreen downward, and over the bottom of birdspike to remove it.
CAUTION Pulling the windscreen over the top of the birdspike may
damage the rain screen.
step 1. step 2. step 3. step 4. step 5.
2

EPS2116 User Guide Replacing the Desiccant 7
Step 3. Replace the birdspike by screwing it onto the top cap.
Step 4. Pull new windscreen downward over the birdspike until the bottom aligns with
the windscreen seating line on the base of the birdspike.
2.2 Replacing the Desiccant
If you are using the PRM831 preamplifier, adding desiccant to the EPS2116 protects the
preamplifier and microphone from precipitation or moist air.
If you are using the PRM2103 preamplifier, desiccant is not required. Instead, the PRM2103
uses a built-in heater to control humidity near the microphone and preamplifier.
TAKE NOTE When the desiccant indicator changes color, it’s time to replace it.
Replacement cartridges are available to order from LarsonDavis.com. (Part# DSC003)
Step 1. Remove the windscreen by unscrewing it from the top cap, as shown in 2.1
Replacing the Windscreen.
Step 2. Gently pull the microphone and preamplifier upward through the top cap of the
EPS2116, then disconnect the preamplifier from the cable.
Step 3. Unscrew the top cap from the EPS2116 base assembly to reveal the desiccant
chambers.
Step 4. Discard the old desiccant cartridges, insert four groups of five new cartridges,
and place the indicator (clear tube) in the unfilled chamber. (See
FIGURE 2-2 Replacing desiccant cartridges
Step 5. Replace the preamplifier and then the top cap. To do this, do the following:
a. Push the cable upward through the top cap.
b. Screw the top cap onto the base.
c. Connect the preamplifier to the cable, and push it down until seated firmly. Do
not pull the cable from the bottom.
Do not let the cable slip down into the base.
It may be difficult to retrieve.

EPS2116 User Guide Replacing the Desiccant 8
FIGURE 2-3 Replacing the top cap and preamplifier
Step 6. Screw the windscreen/birdspike combination onto the top cap. Do not
overtighten.

EPS2116 User Guide A-1
Appendix Technical Specifications
In this module:
A.1 Standards and Safety Requirements Met By EPS2116 - - - - - - - - - - - - - - - - - - - - - - - - - - A-1
A.2 Included Accessories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A-2
A.3 Optional Accessories - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A-2
A.4 Physical Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A-2
A.5 Wind-Induced Noise - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A-3
A.6 EPS2116 Correction Factors - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A-5
A.7 Acoustical Response - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - A-8
A.1 Standards and Safety Requirements Met By EPS2116
A.1.1 Sound Level Meter Standards
When used with the Larson Davis Model 831C, 831, or LxT versions, the EPS2116 can be used as part of a Class 1 or 2
measurement system when the appropriate microphone correction is applied, as directed by IEC 61672-1:2013 and
ANSI S1.4-2014.
A.1.2 Safety Requirements
Compliance Standard
All IEC 61010-1 (2010): Safety requirements for electrical
equipment for measurement, control, and laboratory use
IP 55 IEC 60529 (2001): Degrees of Protection Provided by Enclosures
NEMA 4 NEMA 250 (2008): Enclosures for Electrical Equipment
2002/95/EC (RoHS 1) RoHS: The Restriction of Hazardous Substances Directive
A

EPS2116 User Guide A-2
A.2 Included Accessories
A.3 Optional Accessories
A.4 Physical Specifications
Part # Quantity Accessory
WS011 2 Windscreen for EPS2116
M2116.01 1 Camera/instrument tripod adapter
ADP103 1 EPS2116 to TRP003 adapter
I2116.01 1 Flash drive with instruction manual
Part # Accessory
TRP001 Camera/Instrument tripod
TRP003 Tripod, max height of 8 feet, for use with portable noise monitoring systems and ADP034 adapter
TRP019 Permanent, tilt-down pole for use with ADP100 adapter
TRP020 Semi-permanent tripod for use with ADP100 adapter
DSC003
50 non-indicating desiccant cartridges, * and two indicating desiccant cartidges
CAUTION
*Desiccant cartridges contain 0.05% cobalt chloride and are suitable for use in Europe. Although
non-toxic, the cartridges are not edible. Keep away from children and pets.
ADP100 Adapter connecting EPS2116 to TRP019 or TRP020. Connects 3/4”-14 NPSM (ISO 228-G 3/4) to 1 1/2”
BSPF (ISO 228-G 1.5).
CAL200 Class 1 acoustic calibrator for 1/2” microphones
Table A.1
Material Composition UV resistant
Venting Below preamplifier, near connector
Desiccant Optional cartridges
Mounting
3/4 in. NPT, or Pipe thread R 3/4 (female)
1/4-20 camera thread using included adapter
1.5 in (3 cm) speaker stand using included adapter
Total Weight .71 lb; 332 g
Compatibility Compatible with 1/2” microphones and preamplifiers

EPS2116 User Guide A-3
FIGURE A-1 EPS2116 Dimensions
A.5 Wind-Induced Noise
The following tables show quantified figures for self-generated noise created by
the EPS2116 due to wind.
MPH m/s A-Weighted Level (dB)
5 2.3 26.7
10 4.5 36
15 6.7 44.2
20 8.9 51.4
25 11.2 57.6
30 13.4 63
35 15.6 67.6

EPS2116 User Guide A-4
FIGURE A-2 Wind-Induced Noise Graph
40 17.9 71.7
45 20.1 75.1
50 22.4 78.2
55 24.6 81
60 26.8 83.4
65 29.1 85.8
70 31.3 88.1
75 33.5 90.4
80 35.8 92.9
85 38 95.7
90 40.2 98.9
95 42.5 102.5
100 44.7 106.6
105 47 111.4
110 49.1 117
115 51.4 123.4
120 53.6 130.7
A-Weighted Level (dB)

EPS2116 User Guide A-5
A.6 EPS2116 Correction Factors
The following graph and tables display correction
factors for the effects of the EPS2116 on the response
of the sound level meter. These corrections are
intended for laboratory use when testing to IEC 61672-
3 to account for effects of the EPS2116 when
measurements are taken. See Table A.2 for the
appropriate filter selection in the sound level meter for
a given test, as well as the associated correction factor
to be applied. Figure A-3 shows a graph of the same
information. Note that the correction factors are
tabulated in Figure A-2.
Table A.2 Test, Filter, and Correction Correlation
FIGURE A-3
Test SLM Filter EPS 2116 Correction
(See Table A.2, Figure A-3)
Free-Field Response FF:FF 2116 Free-Field to Free-Field EPS2116
Correction Factor
90° Response FF:90 2116 Free-Field to 90° EPS2116 Correction
Factor
Random Incidence
Response FF:RI 2116 Free-Field to Random Incidence EPS2116 Correction Factor
-12.00
-10.00
-8.00
-6.00
-4.00
-2.00
0.00
2.00
200 2000 20000
()
Frequency (Hz)
Correction Factors for the EPS2116
EPS2116 at 0 Degrees EPS2116 at 90 Degrees EPS2116 at Random Incidence

EPS2116 User Guide A-6
Table A.3 EPS2116 Windscreen Corrections
Frenquency Free-Field to Free-Field
EPS2116 Correction Factor
Free-Field to 90°
EPS2116
Correction Factor
Free-Field to Random
Incidence EPS2116
Correction Factor
Expanded
Uncertainty
Hz dB dB dB dB
63.10 0.00 0.00 0.00 0.20
79.43 0.00 0.00 0.00 0.20
100.00 0.00 0.00 0.00 0.20
125.89 0.00 0.00 0.00 0.20
158.49 0.00 0.00 0.00 0.20
199.53 0.04 0.00 0.00 0.20
251.19 0.07 0.00 0.00 0.20
266.07 0.04 -0.10 -0.06 0.20
281.84 0.05 -0.04 -0.06 0.20
298.54 0.06 -0.01 -0.02 0.20
316.23 0.10 -0.02 -0.04 0.20
334.97 0.09 -0.06 -0.04 0.20
354.81 0.10 0.00 -0.01 0.20
375.84 0.08 -0.06 -0.04 0.20
398.11 0.12 -0.03 0.03 0.20
421.7 0.11 -0.02 -0.01 0.20
446.68 0.14 -0.01 0.03 0.20
473.15 0.12 -0.05 0.00 0.20
501.19 0.29 -0.01 0.06 0.20
530.88 0.35 -0.02 0.11 0.20
562.34 0.34 -0.05 0.09 0.20
595.66 0.29 -0.01 0.06 0.20
630.96 0.29 -0.01 0.07 0.20
668.34 0.31 -0.01 0.09 0.20
707.95 0.40 0.05 0.12 0.20
749.89 0.36 -0.01 0.07 0.20
794.33 0.35 0.00 0.08 0.20
841.4 0.37 -0.01 0.07 0.20

EPS2116 User Guide A-7
891.25 0.44 0.04 0.13 0.20
944.06 0.52 0.04 0.17 0.20
1000 0.55 0.06 0.16 0.20
1059.25 0.55 0.05 0.15 0.20
1122.02 0.70 0.13 0.17 0.20
1188.5 0.65 0.13 0.20 0.20
1258.93 0.72 0.14 0.23 0.20
1333.52 0.70 0.08 0.20 0.20
1412.54 0.70 0.08 0.20 0.20
1496.24 0.75 0.14 0.24 0.20
1584.89 0.78 0.03 0.24 0.20
1678.8 0.77 0.04 0.24 0.20
1778.28 0.79 0.04 0.23 0.20
1883.65 0.77 0.02 0.18 0.20
1995.26 0.85 0.10 0.17 0.20
2113.49 0.70 0.15 0.12 0.20
2238.72 0.75 0.20 0.08 0.20
2371.37 0.55 0.15 0.00 0.20
2511.89 0.72 0.12 -0.07 0.20
2660.73 0.74 0.14 -0.07 0.20
2818.38 0.77 -0.21 -0.20 0.20
2985.38 0.50 -0.51 -0.26 0.20
3162.28 0.55 -0.65 -0.47 0.20
3349.65 0.66 -0.69 -0.68 0.20
3548.13 0.41 -0.70 -0.79 0.20
3758.37 0.21 -1.05 -0.97 0.20
3981.07 0.30 -1.55 -1.23 0.20
4216.97 0.16 -2.05 -1.39 0.30
4466.84 -0.06 -2.54 -1.56 0.30
4731.51 0.19 -2.61 -2.00 0.30
5011.87 0.02 -2.78 -2.08 0.30
5308.84 0.20 -3.35 -2.27 0.30
5623.41 0.15 -3.58 -2.42 0.30

EPS2116 User Guide A-8
A.7 Acoustical Response
This section provides an EPS2116 user with acoustical response data when the
EPS2116 is in place. Graphs are shown with and without the available correction
filters available in the Model 831C, 831, and LxT sound level meters. Also included
in this section is the directional characteristics of the EPS2116.
A.7.1 Reference Direction
The 0° direction is perpendicular to the plane of microphone diagram, as shown
below:
5956.62 -0.09 -3.58 -2.61 0.30
6309.57 -0.16 -3.41 -2.72 0.30
6683.44 -0.30 -3.36 -2.78 0.30
7079.46 -0.13 -3.48 -2.88 0.30
7498.94 -0.20 -3.40 -2.91 0.30
7943.28 -0.26 -3.36 -3.05 0.30
8413.95 -0.40 -3.78 -3.18 0.30
8912.51 -0.60 -3.81 -3.23 0.30
9440.61 -0.52 -4.10 -3.27 0.30
10000 -0.30 -4.42 -3.32 0.30
10592.54 -0.42 -4.45 -3.30 0.30
11220.18 -0.66 -4.49 -3.12 0.30
11885.02 -0.50 -4.31 -2.90 0.30
12589.25 -0.57 -4.41 -2.76 0.30
13335.21 -1.17 -4.64 -2.90 0.30
14125.38 -1.59 -4.95 -3.41 0.30
14962.36 -2.20 -5.41 -4.07 0.30
15848.93 -3.05 -6.30 -4.98 0.30
16788.04 -3.88 -7.46 -6.31 0.30
17782.79 -5.38 -8.87 -7.91 0.30
18836.49 -6.56 -10.06 -9.40 0.30
19952.62 -8.15 -11.24 -10.80 0.30