1. Audiometer Classifications: Class 3.

2. Air conduction:

(1) Frequency: 250Hz,500Hz,750Hz,1000Hz,1500Hz,2000Hz,3000Hz,4000Hz,6000Hz,8000Hz;

(2) Hearing level≤110Db.

3. Bone Conduction:

(1) Frequency: 250Hz,500Hz,750Hz,1000Hz,1500Hz,2000Hz,3000Hz,4000Hz.

(2) Hearing level≤60dB

4. Min hearing level: The min hearing level should be -10dB for pure-tone audiometer of Class 1 and Class 3.

5. Frequency accuracy: The allowable error of frequency for this audiometer is ±2%.

6. The accuracy of audiometer controller: Step of the audiometer controller should be ≤5dB; the deviation of the indication difference between two adjacent hearing levels should be ≤3/10 or 1 dB of the step. Adopt the smaller value.

7. Masking Noise Level Range: The masking noise of the audiometer should be able to mask pure tone of at least 60dB at 250Hz, 75dB at 500 Hz, 80dB at 1000Hz~4000Hz. The masking noise level should be adjustable within the range from 0dB to the above level.

8. The accuracy of masking noise level : The allowable error of the masking noise level should be -3dB~+5dB.

9. The accuracy of masking noise level controller: The step of the masking noise level controller should be ≤5dB. The deviation of the indication difference between two adjacent hearing levels should be ≤ 3/10 or 1 dB of the step. Adopt the smaller value.

10. When the unwanted sound radiated by pure tone audiometer is >50dB HL, people with normal hearing should not hear any unwanted sound radiated by the pure tone audiometer.

11. Pre-heating time: from 5 minutes to 10 minutes.

• How to buy your products ?Do you have distributor in our country?

You can buy the products from our company directly.Normally the procedure is:Sign the contact ,payment  byT/T, contact the shipping company to delivery the goods to your country.

• What is the warranty?

The free warranty is one year from the day of Commissioning qualified.

• Can we visit your country ?

Of course,we will prepare for everything in advance if it is necessary .Generally,it is require that customers must have build agency relationship or business relationship with our company.

• How long is the validity of quotation?

Generally,our price is valid within one month from the date of quotation .The price will be adjusted appropriately according to the price fluctuation of raw material and changes in market .

• Do you have the CE certificate ?

Yes, most of our products have the CE certificate.