GRAS EQ 40PM Microphone cho Dây chuyền sản xuất

NEW EQset™ Technology

NEW ¼” Production Line Microphone

Learn how EQset with its fixed sensitivity and flat response curve will simplify your Production Line setup and data acquisition

EQset is the latest innovation landmark by GRAS. This new technology, never seen in Production Line or Measurement microphones before, enables a microphone with a preset gain, also referred to as fi xed sensitivity, and a fl at response. Providing engineers with high workfl ow effi ciency as well as high measurement accuracy. Furthermore, all GRAS micophones with EQset technology are fully backwards compatible, and are rigorously tested according to GRAS standards.

Fixed Sensitivity

Sensitivity variation between individual microphones varies less than 0.2 dB from nominal sensitivity. Historically, microphone sensitivity have a ±2 dB spread.

Flat Frequency Response

Response variation across the full frequency range is less than 0.5 dB. Historically, microphone response variation across the full frequency is ±2 dB.

Explore the GRAS EQ 40PM microphone with EQset technology

The Most Cost-efficient Production Line microphone in the market

The EQ 40PM is a short 20 KHz pressure microphone with a dynamic range from 30 dB (A) to 120 dB SPL (less than 3% THD) and the same dimensions (34 mm long) as traditional Production Line microphones.

This new range of microphones is ideal for entry level test settings with focus on cost effi ciencies while adhering to industry standards.

Since the EQ 40PM is a high volume microphone, it is delivered in packs of 12 or 24 units. The EQ 40PM can be powered by CCP or by using phantom power (a convenient power source on for commercially available audio sound card).

Environmental Stability

The sensitivity variation when used in a typical Production Line
(temperature 15-30 °C and 20-80% relative humidity) is so small that compensation can be disregarded.

EQset ensures flat response across the entire frequency range

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All those Production Line microphones currently in use waste too much time on setup and installation.

GRAS EQ 40PM ensures:

Ease of Use

The EQ 40PM works out of the box and is far superior to any comparable Production Line solution. Setting up, checking and replacing a microphone in the production setting can happen quickly and easily without any kind of individual microphone adjustment or calibration

Reduced Risk

By using the EQ 40PM, measurement uncertainties can be reduced to a minimum. Probably the most costly quality risk, is the inherent risk of false passes.
With the EQ 40PM, QA departments can increase confi dence in product quality by completely eliminating this risk. EQset technology ensures that all EQ 40PM microphones have a factory-set fixed gain and sensitivity across all frequencies

High Stability

Historically, Production Line microphones were based on sensing elements that were not designed to be environmentally or long time stable. This means that relative humidity changes in the production environment often translates into severe sensitivity drift. The new sensing element used in the EQ 40PM solves this stability issue and makes its stability closer in comparison to measurement microphones than standard Production Line microphones

Cost Efficiency

The EQ 40PM is a very price-competitive, userfriendly solution that allows the user to perform acoustic measurements without the hassles typically associated with setup time, validation, downtime or time for replacing microphones. The price point combined with the reduced time needed for operator training and handling as well as the longlife time of the microphone, makes it the by far most cost-effi cient Production Line microphone available.