Model PRM2101K User Manual
Contents
1. 2 1 PRMZTOTKR SF ee 2 1 Resistive 2 2 Electrostatic Actuator 2 2 Desiccant 2 3 Rainhat electrostatic actuator EPS2110 2 3 Windscreen birdspikes WSO05 2 3 Windscreen Insert 5005 2 3 Recommended Components sn 2 3 Model 820 Noise and Vibration Monitor 2 3 ole eg seele 2 4 ze 2 4 A 2 4 Dimensions not including windscreen 2 5 Giolgigl sle Kol 2 5 Warranty Customer Satisfaction A 1 List of Figures PRM2101K Outdoor Microphone Preamplifier System Installation and Operation 1 1 Remote Noise Monitoring Site 1 1 Preamplifier 1 3 Mounting the 2101 1 4 PRM2101K Assembly serres dend 1 7 TRPO11 Tilt down Tower nnn ennen 1 11 PRM2101K System Specifications 2 1 Control Switches nanne eenen eneen 2 6 List of Tables PRM2101K Outdoor Microphone Preamplifier System Installation and Operation 1 1 PRM2101K System Specifications 2 1 Signal PINS ren2. 2 5 C ntrol PINS 2 6 Warranty Customer Satisfaction A 1 PRM2101K Outdoor Microphone Preamplifier System Installation and Operation Introduction The PRM2101K outdoor preamplifier has been designed for permanent outdoor use in severe weather conditions It is constructed of stainless steel to resist corrosion and its thin profile minimizes both wind resistance and acoustic reflections It is mounted to resist shock and will screw onto any 1 5 standard pipe thread PRM2101K Outdoor Microphone System ptional Solar Panels TRPO11 Hinged 17 Pole 5010 011 5010 011 Enclosure Enclosure Side View with Front View Solar Panels FIGURE 1 1 Remote Noise Monitoring Site 6 3 05 PRM2101K Outdoor Microphone Preamplifier System Installation and Operation 1 1 1 2 The PRM2101K is designed to be a major component of a remote noise monitoring site as shown in FIGURE 1 1 Remote Noise Monitoring Site A typical remote noise monitoring site includes the following components PRM2101K with preamplifier electrostatic actuator and driver heater and silica gel desiccant chamber EPS2110 rainhat with electrostatic actuator WS005 windscreen with birdspikes In addition the following Larson Davis accessories are recommended Random incidence microphones Model 2560 or 377A60 or free field microphone Model 2541 or 377B41 Model 820 sound level meter with 820 OP
3. 1 2 TER POOR ui 1 2 een sea 1 2 TREU Sat ae aa nie 1 2 WwW Warranty reece Bet tec nnen beate enden atman ee 1 Weather Sensor Mount 2 2 0 NK a Ra 1 2 E A ede 1 2 in 1 2
4. 4 Hold the rope and allow the movable part to tilt slowly down Tilting the Hinged Tower 1 11 Tilting the tower up 1 Pull the rope and allow the movable part to tilt slowly up 2 Replace the bolt Put pressure on the movable part to keep it from suddenly tilting 3 Replace the lock and remove the rope storing it in the tower housing 1 12 Tilting the Hinged Tower 6 3 05 PRM2101K System Specifications The technical specifications in this chapter are subject to change without notice Please refer to calibration and test results for data on a specific unit Included Components PRM2101K Frequency 0 1 dB 20 Hz to 20 kHz 3 dB 1 Hz Gain 0 15 dB Input Impedance 10 GQ 0 3 pF Output Impedance lt 500 6 3 05 2101 System Specifications 2 1 Maximum rms out 1 0 Volt with Model 820 Noise Floor 2541 377B41 2560 or 377A60 microphone EXC020 cable A weight 19 dB typical 22 dB max C weight 18 typical 21 dB max Power Supply Voltage Range Dual 7 Volt to 18 Volt Single 14 Volt to 36 Volts Quiescent Current 1 7 mA typical Resistive Heater Operating Power 8 to 14 Vde 75 mA 12 Vdc 160 Q 0 9 0 Turn on lt 2 Vdc 45 uA from open collector Electrostatic Actuator Output Nominal 96 dB SPL 1 kHz Operating Power 5 to 18 60 mA 12 Vdc 2 2 Included Components 6 3 05 70 when off Turn on 4 to 15 Vdc 20 mA 5 Vdc Desiccant de
5. Replace the window and gasket Gently tighten the six screws evenly but not overly tight or the window may be damaged Tilting the Hinged Tower 6 3 05 The PRM2101K may be mounted on the TRPO11 tiltdown tower This hinged tower is in two parts one stationary and the other movable The movable part overlaps the stationary part The bottom back of the pole has a latch with a hole for a lock that secures the tower to prevent unauthorized persons from tilting the tower down a 3 4 bolt that keeps the two parts from separating Desiccant Replacement 1 9 Caution Do not loosen or remove two flanges with holes two bolt nuts one welded to the the bolt unless both ends of the stationary part and one welded to the movable part restraining rope are properly These are for clamping each end of a retaining rope attached Be sure the area in front of the tower is clear Do not maintain the tower in an electrical storm or when the wind speed exceeds 32 km hr 19 2 mph Use more than one technician when the wind speed exceeds 15 km hr 9 mph 1 10 Tilting the Hinged Tower 6 3 05 Tilting the tower down 6 3 05 FIGURE 1 5 011 Tilt down Tower 1 Clamp one end of the rope to the bottom flange attached to the stationary part 2 Clamp the other end of the rope to the top flange attached to the movable part 3 Remove the lock and the bolt Put pressure on the movable part to keep it from suddenly tilting
6. The rainhat is screwed on the top ofthe microphone replacing its grid cap The rainhat and microphone are covered by the windscreen Acoustic Calibration 1 7 Note The birdspikes slides 2 to provide room for the calibrator Removal and replacement of the microphone is not recommended in the outdoor environment Caution Be sure that you do not unscrew the microphone Do not put any pressure on the ribs of the rainhat Do not let the actuator get contaminated Caution When moving the birdspikes down be sure the actuator wire is placed in the slot provided otherwise it could be damaged Note When the 820 is in the Auto CAL Mode the actuator will initiate a daily calibration check which will be recorded refer to the 820 manual setup items 37 and 38 To determine if there is any significant calibration drift compare the reference level with the daily levels 1 8 1 Pull the windscreen cover off and loosen the screw at the base of the birdspikes to make room for the calibra tor Tighten the birdspikes screw after raising the assem bly 2 2 Unscrew the wire attached to the top of the rainhat by turning the nut not the wire Do not allow the actuator wire to come in contact with metal or flesh It carries electrical currents during calibration check 3 Unscrew the rainhat and place it on a clean dry surface 4 Screw on the microphone grid cap It is usually kept in the microphone box 5
7. others to the PSA007B power supply push on to fuse box and spade to grounding block The 820 control I O port is the one closest to the instrument battery compartment PRM2101K Mounting Instructions 1 5 Sound Measurement 1 6 The PRM2101K is normally shipped with a precision air condenser microphone installed under the EPS 2110 rainhat With the PRM2101K connected to the 820 turn on the polarization voltage normally the 200 V setting is used and observe if the instrument is responding to sounds The PRM 2101K will perform similarly to a standard preamplifier If there are any difficulties at this point substitute a Model 828 preamplifier onto the 820 to ascertain if the PRM2101K is working properly Sound Measurement 6 3 05 Acoustic Calibration Caution Be careful not to touch the microphone diaphragm when removing and replacing the actuator and microphone grid see FIGURE 1 4 PRM2101K Assembly 6 3 05 To calibrate the measurement system with an acoustic calibrator follow steps 1 through 12 when the microphone rainhat and electrostatic actuator hereafter referred to as rainhat and birdspikes are in place M2120 0002 lt Birdspikes EPS2110 Rainhat t Microphone O ring Preamplifier Electrostatic actuator wire I J FIGURE 1 4 PRM2101K Assembly The birdspikes enclose the windscreen
8. Place the calibrator over the microphone and press its ON switch 6 Check the calibration level Refer to your measurement instrument s operations manual 7 If necessary change the calibration level 8 Remove the calibrator 9 Remove the microphone grid cap Place the grid cap back into the microphone box 10 Replace the rainhat and attach the actuator wire 11 Replace the windscreen move the birdspikes all the way down and tighten the screw 12 Perform a calibration check with the 820 The electrostatic actuator will automatically give a dB level depending on the microphone used Write the level down and compare with readings taken in Auto CAL Mode setting 37 Use it as the reference for all measurements using the same microphone The PRM2101K is now ready to take acoustic measurements Acoustic Calibration 6 3 05 Desiccant Replacement The desiccant is contained in eleven plastic cylinders The end cylinder can be seen through the window The change of color from blue to pink determines when the desiccant should be replaced 1 Unscrew the six screws holding the window in place Unscrew only far enough to release the window Screws are self retaining and should not be removed from the acrylic window Remove the window and gasket Raise the pole to the one o clock position This will allow the eleven desiccant tubes to fall out of the PRM2101K to the ground Lower the pole and replace the desiccant
9. not apply to certain purchasers F NO LIABILITY IN EXCESS OF PURCHASE PRICE IN NO EVENT SHALL LD S OBLIGATIONS UNDER THIS LIMITED WARRANTY EXCEED THE PURCHASE PRICE OF THE PRODUCT PLUS ANY SHIPPING CHARGES THAT LD MAY BE OBLIGATED TO PAY PURSUANT TO PARAGRAPH C ABOVE NO EXTENSION OF STATUTE OF LIMITATIONS ANY REPAIRS PERFORMED UNDER THIS LIMITED WARRANTY SHALL NOT IN ANY WAY EXTEND THE STATUTES OF LIMITATIONS FOR CLAIMS UNDER THIS LIMITED WARRANTY H WAIVER OF OTHER WARRANTIES THE EXPRESS WARRANTIES SET FORTH IN THIS LIMITED WARRANTY ARE IN LIEU OF AND EXCLUDE ANY AND ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Some states do not permit the disclaimer of implied warranties Therefore the above disclaimer of implied warranties may not apply to certain purchasers I Procedure for Warranty Performance If the product fails to perform to LD s specifications the Buyer must provide LD with the applicable model and serial numbers the date of purchase and the nature of the problem J ADDITIONAL EXCLUSIONS FROM THIS LIMITED WARRANTY NOTWITHSTANDING ANYTHING TO THE CONTRARY CONTAINED IN THIS LIMITED WARRANTY THIS LIMITED WARRANTY DOES NOT COVER ANY OF THE FOLLOWING LEQUIPMENT THAT HAS BEEN ABUSED DAMAGED USED BEYOND RATED CAPACITY OR REPAIRED BY PERSONS OTHER THAN AUTHORIZED SERVICE PERSONNEL A 2 Warranty Custome
10. 3 D Desiccant A nr 1 9 E Eleetrostate CAOS DIE als 1 2 EIS I O A A Ne Ree 1 2 I Installation als tanta e A ask 1 1 1 3 MPR TAD VOT Ke ee ne taxa 1 4 Introduction sneren edn 1 1 M Microphones neee beenen 1 2 Model 820 veeene 1 2 O Operationen een 1 1 P Pole us A 1 2 POWELSUPPp Vater Sieht eee 1 2 R Rambat centre 1 2 Remote Noise Monitoring System Components A hend 1 2 Sound bevel Meter ansehen 1 2 Sound Measurement sa rar 1 6 APEC 2 1 820 Noise and Vibration Monitor nennen 2 3 Calubratien tia 2 4 Connectors ster souterraine tech 2 5 0 2 3 Electrostatic Actuator une na ana ea 2 2 Environmental sie 2 4 Heater a A E 2 2 Physical tee a 2 5 Power s pply aa alu 2 2 50 ane dde 2 1 Rainhat electrostatic actuator 2 3 2 3 Windsersen birdspikes una ee 2 3 T Technical SUpport 1 3 Tile down Pole sn A 1 2 acceded cease as ah Nauta tina E 1 11 Tower een lehnte 1 9 Tilting down 1 11 Tilting 1 12 RIP OOD 2 a
11. 3 kg 6 6 Ib Connectors Signal female mates with Switchcraft TA5ML Pin Purpose 1 Ground 2 Signal Output Table 3 1 Signal Pins 6 3 05 Physical 2 5 Pin Purpose 3 Power supply negative voltage 4 Microphone bias 0 to 200 Vdc 5 Power supply positive voltage Table 3 1 Signal Pins Control male mates with Switchcraft TA5FL Pin Purpose Ground 12V Electrostatic Actuator Control Heater Control Not Used Table 3 2 Control Pins 2 6 Connectors 6 3 05 Switches internal to 820 connected to CBL009 020 Ground FIGURE 2 1 Control Switches 6 3 05 Connectors 2 7 Connectors 6 3 05 APPENDIX Warranty Customer Satisfaction A Total Customer Satisfaction Larson Davis Inc LD guarantees Total Customer Satisfaction If at any time you are not completely satisfied with any LD product LD will repair replace or exchange it at no charge except as otherwise provided in this Limited Warranty The employees of LD strive to provide superior unmatched customer service Should you find yourself dissatisfied with any LD product for any reason consult a LD Application engineer or local representative distributor to discuss your situation B Purchase Price Refund Limited Warranty LD warrants to the original purchaser the Buyer that unless otherwise expressly specified in writing by a LD officer all LD pro
12. PRM 2101K Outdoor Microphone Preamplifier System User Manual Larson Davis Inc 1681 West 820 North Provo UT 84601 1341 Phone 888 258 3222 FAX 801 375 0182 www LarsonDavis com IPRM2101K RevC Copyright Copyright 2003 by Larson Davis Incorporated 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 Larson Davis Inc Disclaimer The following paragraph does not apply in any state or country where such statements are not agreeable with local law Even though Larson Davis Inc has reviewed its documentation Larson Davis Incorporated makes no warranty or representation either expressed or implied with respect to this software and documentation its quality performance 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 Larson Davis Inc This publication may contain inaccuracies or typographical errors Larson Davis 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 Equal Opportunity Employer Larson Davis is an equal opportunity employer and does not discriminate on the basis of race color religion gender national origin disability or veteran status Please examine your instrum
13. T 01 Control output PSA007B NMS switching power supply 90 264 VAC with battery 001 12 V 26 Ah or PSA012B Solar Battery Power Supply with 47 W solar panel Preamplifier cables EXC020 and CBL009 020 Tilt down TRPO11 17 aluminum portable tripod tower TRP007 10 10 or portable tripod tower TRP007 20 20 8 accessory mount for fixing weather sensors into the TRP007 portable tripod tower TRPO12 accessory mount for fixing weather sensors into the TRPO11 17 tilt down tower Introduction 6 3 05 Initial Installation The PRM2101K comes from the factory fully assembled with its microphone installed if purchased at the same time The microphone grid cap is replaced with the rainhat and electrostatic actuator The grid cap is stored in the microphone box for use when the system is acoustically calibrated If the PRM2101K is purchased without a microphone see Figure 1 4 PRM2101K Assembly The PRM2101K is installed on a 1 5 diameter threaded pipe such as at the top of the TRPO11 or other pole 6 3 05 CBL009 020 control cable EXC020 signal cable FIGURE 1 2 Preamplifier Connections Initial Installation 1 3 PRM2101K Mounting Instructions To mount the PRM2101K on an outdoor pole follow the instructions in the order listed and refer to Figure 1 3 Mounting the PRM2101K Larson Davis tilt down towers must be installed according to contractor specifications Mou
14. ducts shall be free of defects in material and workmanship for a period of two 2 years from date of original purchase In furtherance of LD s commitment to Total Customer Satisfaction LD will for a period of one 1 year from date of original purchase refund 100 of the customer s purchase price for any LD product with which the buyer is not completely satisfied subject to the exceptions contained in Paragraph J of this Limited Warranty The option of a refund may be selected during this one 1 year period in lieu of repair replacement or exchange of the product Extended Labor Warranty In furtherance of LD s commitment to Total Customer Satisfaction LD offers an extended labor warranty of one 1 year on all products calibrated or certified by a factory technician at any time or from time to time during the first seven years of the product life from date of manufacture The customer s sole remedy pursuant to this extended warranty is to receive free labor for any repairs required during the period in which the extended warranty is effective This extended labor warranty is subject to the limitations as outlined in Paragraph J Service amp Repair Limited Warranty In addition to the limited warranties set forth above LD offers a 90 day parts and labor limited warranty for all repair work performed at the factory This warranty is limited to parts repaired or replaced at the factory by LD This warranty is also subject to the limitations as out
15. ent and record the following information below You may be asked to give this information in any future communications you have with Larson Davis Inc Record of Serial Number and Purchase Date PRM2101K Serial Number Purchase Date Technical Support In the U S call toll free 888 258 8259 International customers 801 343 0031 FAX 801 375 0182 Support LarsonDavis com Worldwide Web www LarsonDavis com Recycling Larson Davis Inc is an environmentally friendly organization and encourages our customers to be environmentally conscious When this product reaches its end of life please recycle the product through a local recycling center or return the product to Larson Davis Inc Attn Recycling Coordinator 1681 West 820 North Provo Utah USA 84601 where it will be accepted for disposal Table of Contents PRM2101K Outdoor Microphone Preamplifier System Installation and Operation 1 1 een 1 1 NAAA 1 3 PRM2101K Mounting Instructions 1 4 Sound Measurement 1 6 Acoustic Calibration annen 1 7 Desiccant 1 9 Tilting the Hinged 1 9 Tilting the tower down ne 1 11 Tilting the tower UP run 1 12 PRM2101K System Specifications 2 1 Included
16. humidifier 17 gram blue silica gel eleven capsules 1 5 gram with expected life of 6 12 months replacement required when gel turns pink Rainhat electrostatic actuator EPS2110 Windscreen birdspikes WS005 Windscreen Insert WS005 F Recommended Components Model 820 Noise and Vibration Monitor Dynamic Range 110 dB Data Storage 256Kbyte Interface RS 232 6 3 05 Recommended Components 2 3 Microphones Cables Calibration Environmental Temperature Range Humidity Range 2 4 e Free Field high sensitivity Model 2541 377B41 Random high sensitivity Model 2560 or 377 A60 Both are 1 2 condenser microphones 18 pF with diaphragm impervious to nitric acid sulfuric acid hydrochloric acid and salt 20 foot preamplifier cable EXC020 20 foot control cable CBL009 020 Internal electrostatic actuator verifies complete system accuracy including microphone to Type 1 performance Actuator provides approximately 96 dB sound pressure level output at a frequency of 1 kHz 40 to 65 C 40 to 149 F 0 to 100 relative humidity Calibration 6 3 05 Physical Mounting Screw Threads 1 1 2 NPT shock mounting built in Dimensions not including windscreen Preamplifier diameters Top 13 3 mm 1 2 in Middle 26 7 mm 1 in Bottom 76 2 mm 3 in Lengths Overall top of birdspikes 1092 mm 43 0 in Preamplifier 918 mm 35 8 in Weight
17. lined in Paragraph J C Shipping Charges The buyer will return the product freight prepaid by the Buyer to an authorized service center The product will be returned to the buyer freight prepaid by LD D Products Manufactured by Others This Limited Warranty does not cover any products manufactured by others Such products are subject to the warranty if any of their respective manufacturers and to be repaired only by a respective authorized service person for such products LD shall have no obligation to undertake repairs of products manufactured by others PRM2101K Reference Manual Warranty Customer Satisfaction A 1 SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES LD S SOLE OBLIGATIONS UNDER THIS LIMITED WARRANTY ARE SET FORTH ABOVE IN PARAGRAPHS AND D IN NO EVENT SHALL LD ITS CONTRACTORS OR SUPPLIERS BE LIABLE TO THE BUYER FOR ANY LOST PROFITS DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES WHETHER BASED ON CONTRACT IN TORT OR ANY OTHER LEGAL THEORY SUCH DAMAGES FOR WHICH LD SHALL NOT BE RESPONSIBLE INCLUDE BUT ARE NOT LIMITED TO LOST TIME AND CONVENIENCE LOSS OF USE OF THE PRODUCT THE COST OF A PRODUCT RENTAL COSTS OF GASOLINE TELEPHONE TRAVEL OR LODGING THE LOSS OF PERSONAL OR COMMERCIAL PROPERTY AND THE LOSS OF REVENUE Some states do not permit the limitation or disclaimer of incidental or consequential damages Therefore the above disclaimer of incidental or consequential damages may
18. nting the PRM2101K PRM2101K N Base Tube N Shim Base Plate Gasket N N i Pipe Ring 8 32 x 3 8 Screw 4 Places SSSSSSSSSSSSS Mounting Ring 1 5 conduit Outdoor Pole 1 4 PRM2101K Mounting Instructions 6 3 05 FIGURE 1 3 Mounting the PRM2101K 6 3 05 1 First slide the mounting ring then one rubber gasket over the 1 5 conduit or pipe on the top of the outdoor pole 2 Fasten the pipe ring firmly on the 1 5 pipe For proper shock mounting threads must not extend beyond the top surface of the ring 3 Place one or two clear plastic shims in the bottom of the base tube if needed for tightness 4 Place the second rubber gasket in the bottom of the base tube 5 Connect EXC020 and the CBL 009 to the base of the PRM2101K and mount the PRM2101K onto the TRP011 such that the desiccant chamber window will be facing towards the ground if the pole can be lowered This will make it easier to change the desiccant in the future 6 Align the four holes of the base tube with the corresponding holes in the mounting ring Use the socket head screws to secure the PRM 2101K Turning the PRM2101K is not required The other ends of the preamp cables connect to an accessory as follows e The EXC020 female end connects to the 820 preamplifier input The CBL009 020 enclosure end has three connectors the stereo plug connects to the 820 control VO port the
19. r Satisfaction PRM2101K Reference Manual 2 DAMAGE CAUSED BY ACTS OF GOD THAT INCLUDE BUT ARE NOT LIMITED TO HAILSTORMS WINDSTORMS HURRICANES TORNADOES SANDSTORMS LIGHTNING FLOODS AND EARTHQUAKES 3 DAMAGE UNDER CONDITIONS CAUSED BY FIRE OR ACCIDENT BY ABUSE OR BY NEGLIGENCE OF THE USER OR ANY OTHER PERSON OTHER THAN LD BY IMPROPER INSTALLATION BY MISUSE BY INCORRECT OPERATION BY NORMAL WEAR AND TEAR BY IMPROPER ADJUSTMENT OR ALTERATION BY ALTERATIONS NOT COMPLETED BY AUTHORIZED SERVICE PERSONNEL OR BY FAILURE OF PRODUCTS PARTS FROM SUCH ALTERATIONS 4 COSTS OF REPAIRING DAMAGE CAUSED BY POOR OR IMPROPER MAINTENANCE OR UNAUTHORIZED REPAIR 5 COSTS OF MODIFYING THE PRODUCT IN ANY WAY ONCE DELIVERED TO THE BUYER EVEN IF SUCH MODIFICATIONS WERE ADDED AS A PRODUCTION CHANGE ON OTHER PRODUCTS MADE AFTER THE BUYER S PRODUCT WAS BUILT Authority to Alter This Limited Warranty No agent representative distributor or authorized dealer of LD has any authority to alter the terms of this Limited Warranty in any way This Limited Warranty may be altered only in a writing signed by an authorized officer of LD PRM2101K Reference Manual Warranty Customer Satisfaction A 3 A 4 Warranty Customer Satisfaction PRM2101K Reference Manual C Cables Preamplifier nea 1 2 Calibration ix A A IN A 1 7 AAA re 2 5 CASOS SERVICE leia 1
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