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MK 290 E (2 x MK 222 E)

MK 290 E (2 x  MK 222 E)

MK 290 E (2 x MK 222 E)

Product catalog summary
Overview
The MK 222 E is a 1/2” condenser measuring microphone cartridge designed for acoustical measurements in research, development, and industrial applications, including audiology and building acoustics.

Specifications
  • Frequency Range: 0.5 Hz to 20 kHz, suitable for free-field and infrasound measurements.
  • Sensitivity: -25.2 dB re 1 V/Pa, equivalent to 54.8 mV/Pa.
  • Cartridge Capacitance: 18.5 pF.
  • Polarization Voltage: 0 V.
  • Operating Temperature Range: -50°C to +100°C.
  • Max SPL for 3% THD at 1 kHz: 146 dB.
  • Diameter with Protection Grid: 13.2 ± 0.02 mm; without: 12.7 ± 0.02 mm.
  • Height: 16.4 mm; Weight: 9 g.

Design and Compatibility
The MK 222 E features a design similar to the MK 221, with a capillary tube for static air pressure equalization, allowing for infrasonic measurements. It uses a 60 UNS thread for compatibility with various calibration and measurement devices.

Calibration and Maintenance
  • Calibration is facilitated by an integrated calibration grid, allowing for the application of a defined electrostatic field without removing the protection grid.
  • Regular maintenance involves protecting the cartridge from mechanical damage and cleaning it with a soft cloth or brush to avoid pollution.
  • Not suitable for chemically aggressive environments or conductive dust; condensation must be avoided.

Additional Features
  • The TA 202 dehumidifier can be used to enhance reliability in humid conditions.
  • Complies with IEC Type 1 standards according to IEC 651.

Delivery
The MK 222 E is delivered in a wooden case, with Order-No. 311110.
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Catalog excerpts

MK 290 E (2 x  MK 222 E)-1

KONDENSATORMIKROFONE FÜR STUDIO - UND MESSTECHNIK M I C R OT E C H G E F E L L Kondensator-Messmikrofonkapsel MK 222 E Die 1/2” Messmikrofonkapsel MK 222 E ist für akustische Messungen in Forschung, Entwicklung und Industrie konzipiert und wird unter anderem auch in der Bauakustik und der Audiologie eingesetzt. Frequenzbereich 0,5 Hz bis 20 kHz, Freifeld, Infraschall Das konstruktive Konzept der Mikrofonkapsel gleicht der bewährten Kapsel MK 221. Der statische Druckausgleich zwischen dem inneren Hohlraum und der Atmosphäre wird über eine für lnfraschallmessungen abgestimmte Kapillare zum nachfolgenden Vorverstärker gewährleistet. Das ermöglicht die Verwendung des Trockenadapters TA 202. Eine einfache Kontrolle des Mikrofonfrequenzganges ist mit Hilfe des integrierten Eichgitters möglich. Ein definiertes elektrostatisches Feld (400 V/DC, 30 V/AC) kann ohne Entfernen der Schutzkappe und ohne spezielle Abstandshalter angelegt werden. Der international übliche Gewindetyp (60 UNS) für den Anschluss der Mikrofonkapsel gestattet die Austauschbarkeit mit anderen 1/2” Mikrofonkapseln und ermöglicht den Anschluss an alle geeigneten Kalibrier- und Messgeräte. Messmikrofonkapsel MK 222 E und Messmikrofonvorverstärker MV 203 sind als Mikrofonglied eichfähig und für Schallpegelmesser der Klasse 1 nach IEC 651 geeignet. Beim Einsatz in extrem feuchter Atmosphäre kann zur Erhöhung der Betriebssicherheit der Trockenadapter TA 202 zwischen Mikrofonkapsel und Vorverstärker geschraubt werden. Condenser Measuring Microphone Cartridge Type MK 222 E The 1/2” MK 222 E measuring microphone cartridge is designed for acoustical measurements in research and development and also for industrial use. Some applications include audiology, the measurement of building acoustics and noise levels. Frequency range from 0,5 Hz to 20 kHz, free-field, infrasound The constructive design of the cartidge is equal to that of the time-tested cartridge type MK 221. The equalization of the static air pressure between the inside and outside of the cartridge is by means of a capillary tube, adjusted for infrasonic measurements, rear-vented into the preamplifier. This enables the use of the optional TA 202 dehumidifier. The individual frequency response curves can be convenient measurement by the integrated calibration grid. A well-defined electrostatic field (400 volts/dc, 30 volts/ac) can be applied without removing the protection grid or requiring special spacers. The cartridge uses the international standard thread 60 UNS which ensures compatibility with a wide range of calibration equipment and measurement devices available from many manufacturers. Measuring microphone cartridge MK 222 E and measurement microphone preamplifier MV 203 can be calibrated and are designed for sound level meters of IEC Type 1 according to lEC 651 . The TA 202 dehumidifier can be screwed between cartridge and preamplifier to increase the reliability for operation in an extremely humid atmosphere. Lieferumfang/Delivery Messmikrofonkapsel Measuring Microphone Cartridge MK 222 E im Holzetui MK 222 E in wooden case MICROTECH GEFELL GMBH MÜHLBERG 18 D-07926 GEFELL TEL. ++49 (0)36649 / 882-0 INTERNET http://www.microtechgefell.de [email protected]

 Open the catalog to page 1
MK 290 E (2 x  MK 222 E)-2

PTB-Zulassung-Nr. zur amtlichen Eichung Wandlertyp Transducer type Frequenzbereich des Freifeldübertragungsmaßes Frequency range free field response Feld-Leerlauf-Übertragungsfaktor/Sensitivity Grenzschalldruckpegel für 3 % Klirrfaktor bei 1 kHz Max. SPL for THD ≤ 3 % at 1 kHz Eigenrauschen mit Vorverstärker MV 203 Inherent noise with preamplifier MV 203 Polarisationsspannung/Polarization voltage Kapazität mit Polarisationsspannung bei 1 kHz Polarized cartridge-capacitance at 1 kHz Arbeitstemperaturbereich Operating temperature range Temperaturkoeffizient Main ambient temperature coefficient...

 Open the catalog to page 2

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.