65
Nemko 09ATEX1119X
Issue 1
Date: 2011-09-21
Page 2 of 3
This certificate may only be reproduced in its entirety and without any change, schedule included.
Postal address:
Office address:
Telephone:
Enterprise number:
P.O.Box 73 Blindern
Gaustadalléen 30
+47 22 96 03 30
NO 974404532
N-0314 OSLO, NORWAY
0373 OSLO
Fax:
+47 22 96 05 50
[13] Schedule
[14] EC-TYPE EXAMINATION CERTIFICATE No Nemko 09ATEX1119X
Issue 1
[15]
Description of Equipment or Protective System
The headset consists of two headphones and a microphone connected to a common plug (jack plug). This certificate
covers two models, one with headband and one with helmet attachment.
Type Designations
MT72H540F-50
MT72H540P3E-50
Safety parameters for intrinsically safe connection.
Maximum input voltage, Ui=14V
Maximum input current, Ii=450mA
Maximum input power, Pi=1.3W
Maximum internal capacitance, Ci=Negligible
Maximum internal inductance, Li=0.8mH
[16] Report No. 187494
Descriptive Documents
Name/Title
Drawing No. Rev.
Date
Sheets
Assembly Drawing MT72H540F-50
P080130
b
2008-08-13
1
Assembly Drawing MT72H540P3E-50
P080137
b
2008-08-13
1
Wiring Instruction MT72H540**-50
P080139
a
2008-02-22
1
Ex Label MT72H540F-50
P080435
b
2009-04-15
1
Ex Label MT72H540P3E-50
P080436
b
2009-04-15
1
Instruction Manual
FP3640
d
-
-
Datasheet UDU-19RK from Teisco Sound
Research Ltd
-
-
1998-07-06
4
Datasheet UDU-19RK-N from KTEL Corp.
-
-
2005-09-09
1
Datasheet HU-28G 230ohm from Teisco Sound
Research Ltd
-
-
1990-11-15
4
Datasheet M01N-02 from KTEL Corporation
-
-
2011-06-27
1
Certificate History and Associated Nemko Reports
Issue Date
Report
Description
0
2009-04-27
126520
Prime Certificate released
1
2011-09-20
187494
Increased the current in safety parameters for intrinsically safe connection and
added a microphone, M01N-02.
