MIKASE LABORATORY - PT MITRA KATIGA SEJAHTERA / SUPPLIER ALAT UJI KUALITAS UDARA, AIR, CUACA , KEBISINGAN SERTA GETARAN

Keterangan

Applications
• Stationary and mobile noise control
• Long-term outdoor measurements
Features
• Microphone protection from wind and rain
• Stainless birdspikes
• Heated preamplifier
• Frequency response according to IEC 61672: 2002-5 ( and IEC 60651: 2001-10) and ANSI
S1.4: 1983 class 1, both for airport and environmental noise
• Compatible with standard ½ ” microphone sound calibrator
Description
The HD WME microphone unit is suitable for long lasting outdoor monitoring, even in a fixed unattended location. The unit is adequately protected from rain and wind and the heated preamplifier together with the protective membrane coating of the microphone capsule provide stability of acoustic parameters over time and allow you to make measurements over a wide range of environmental conditions.
The Delta Ohm sound level meter preamplifier matched with the outdoor microphone unit is equipped with a circuit for electrical calibration of the preamplifier - microphone chain, a technique that uses a charge distribution.
The frequency response of the unit in open field meets the specifications of class 1 according to IEC 61672 ( and IEC60651) and was certified by I.N.RI.M. ( Certificate of conformity No. 10-0126-02
of 04.29.2010) . The microphone unit HD WME must always be positioned vertically to allow the anti-rain to perform its function and can be used both to detect the noise from the air and the
ground. The Delta Ohm sound level meters perform spectral corrections to the measures to ensure tolerances in accordance with the IEC61672 class 1 in every situation.
The microphone unit HD WME has an optimized frequency response for “ free field” . Since the microphone is installed in a vertical position, the frequency response is flat for the sound waves coming from above, such as those of aircraft overflights. To correct the frequency response HD WME
microphone unit for the presence of the windscreen, the appropriate parameter of the sound level meter has to be set as follows:
Menu > > Calibration > > Screen Correction > > WME.
The frequency response of the microphone to noise coming from the surrounding ground is very different from that for “ free field” . By setting the parameter:
Menu > > Calibration > > Microphone Response > > RI
The sound level meter applies the necessary spectral correction for measurements of noise coming from the ground in accordance with specifications of class 1 according to IEC 61672 ( and IEC 60651) and ANSI standards. When calibration is complete, refit the protections according to the explanations
under Assembly.
The easiness of disassembly and reassembly of the unit allows to perform periodic testing of the electro- acoustic characteristics the same way as a standard measurement microphone, using a standard calibrator for ½ ” microphone.
- HD 2110PW: heated preamplifier for 200V polarized microphones, with CTC calibrator and differential driver for cable lengths up to 100 meters. For HD2110 sound level meters.
- HD 2110PEW: heated preamplifier for prepolarized microphones, with CTC calibrator and differential driver for cable lengths up to 100m. For HD2110 sound level meters.
- HD 2010PNW: heated preamplifier for 200V polarized microphones, with CTC calibrator and driver for cable lengths up to 10 meters. For HD2010 sound level meters.
- HD 2010PNEW: heated microphone for prepolarized microphones, with CTC calibrator and driver for cable lengths up to 10m. For HD2010 sound level meters.
- HD 2010PNE2W: heated preamplifier for UC52 microphone, with CTC calibrator and driver for cable lengths up to 10m. For HD2010UC and HD2010UC/ A sound level meters.
Connection cable 5m ( other lengths available on request) .

Specifications
Microphone MK223
Type ½ ” standard condenser
Polarization voltage 200V
Frequency response 3.5Hz – 20 kHz
Sensitivity 50 mV/ Pa
Maximum sound pressure level( 3% THD at 1kHz) 146 dB
Microphone MK250B
Type ½ ” standard condenser
Polarization voltage 0V
Frequency response 3.5Hz – 20 kHz
Sensitivity 50 mV/ Pa
Maximum sound pressure level ( 3% THD at 1kHz) 146 dB
Microphone UC52
Type ½ ” standard condenser
Polarization voltage 0V
Frequency response 20Hz – 20 kHz
Sensitivity 20 mV/ Pa
Maximum sound pressure level ( 3% THD at 1kHz 146 dB
Preamplifier
Power supply ± 6V
Power consumption 5 mA
Heater 35 mA @ 6V
Output impedance 50 ©
Operating conditions
Temperature -25 … + 70 ° C
Relative humidity < 100% without condensation
Mechanics
Dimensions (  x L) complete with birdspikes 90 x 470 mm
Weight 600 g
Thread for type MK microphone capsules 11.7 mm 60 UNS
Thread for type UC52 microphone capsules M11.6 x 0.4
Thread for the support of the unit M18 x 1, ½ W, ¼ W
Cable lengths 5m ( other lengths available on request)
Connector DIN 8-pole