OTTO ClearTrak NRX Owner's manual

Brand: OTTO

Model: ClearTrak NRX

Category: Mobile headsets

Type: Owner's manual

ClearTrakTM NRX Headset

Intrinsically Safe / Sécurité Intrinsèque

Installation manual

IMPORTANT SAFETY WARNINGS AND FEATURES

This ClearTrak™ NRX Headset reduces exposure to noise and loud sounds

that can damage hearing. Be sure to follow the instructions in this manual

carefully. Failure to follow these recommendations may severely reduce

the amount of hearing protection provided by the headset.

•

The headset must be worn at all times in noisy environments to avoid hearing

loss/injury.

Misuse of or failure to wear hearing protection when exposed to hazardous noise

may result in hearing loss and/or injury. If you experience symptoms of hearing

injury (ringing in ears, dulled hearing, headaches), contact your supervisor or a

medical professional immediately.

The headset must be fitted, adjusted and maintained in accordance with

manufacturer’s instructions to achieve the expected attenuation and hearing

protection. Failure to do so may result in hearing loss and/or injury.

The thermoplastic polyurethane foam ear seals on the ClearTrak™ NRX may

deteriorate with use and should be examined at frequent intervals for damage,

such as cracking and leakage. Replace as recommended on page 9.

Using cloth hygiene covers over the foam ear seals may affect the acoustic

performance of the headset.

The ClearTrak™ NRX headset may be adversely affected by certain chemical

substances. Further information should be sought from the manufacturer.

This earmuff is provided with safety-related audio input. The wearer should

check correct operation before use. If distortion or failure is detected, the wearer

should refer to the manufacturer's advice.

Warning: the output of the safety-related audio circuit of this hearing protector

may exceed the daily limit sound level.

Headset should be regularly inspected for serviceability.

Headset weight: 590gm (20.81oz.)

Estimated product life cycle is 20 years.

Headband extrusion: silicone rubber or EPDM

•

Frequency (Hz)125 250 500 1000 2000 3150 4000 6300 8000

Mean Attenuation (dB) 17.6 20.8 28.3 33.634.7 41.4 41.0 40.039.6

Standard Deviation (dB) 2.7 1.82.22.22.93.9 4.0 3.6 2.0

NRR= 25 dB; Headband Force= 3.4 lbs.PER ANSI S3.19-1974

Noise Reduction Rating (OTH)

NRR= 24 dB; Headband Force= 3.8 lbs.

TEST REPORT ID: Q6353A, Michael and Associates, Inc.

Important: NRR is not attenuation, and the labeled NRR for most earmuffs does not represent

typical performance. The typical user can expect to obtain a higher level of attenuation across

frequencies when the earmuffs are used as directed and the device is off.

TEST REPORT ID: Q6354A, Michael and Associates, Inc.

Noise Reduction Rating (BTH)

Frequency (Hz)125 250 500 1000 2000 3150 4000 6300 8000

Mean Attenuation (dB) 16.8 20.4 27.7

3.2

34.6 39.8 40.7 39.039.7

Standard Deviation (dB) 2.6 2.32.3

33.9

3.5 2.9 3.73.1 2.8

PER ANSI S3.19-1974

SNR (Single Number Rating)

Frequency (HZ) 125 250 500 1000 2000 4000 8000 SNR = 32 dB

Mean Attenuation (dB) 17.5 23.1 29.5 34.9 36.6 40.9 40.6H = 36 dB

Standard Deviation (dB) 3.12.8 1.9 2.1 2.83.5

Assumed Protection Value (dB) 14.4 20.3 27.7 32.7 33.8 37.4 37.9L = 22 dB

SNR (Single Number Rating)

Frequency (HZ) 125 250 500 1000 2000 4000 8000 SNR = 31 dB

Mean Attenuation (dB) 16.8 21.4 28.7 36.5 37.7 41.4 40.4 H = 36 dB

Standard Deviation (dB) 2.7 3.4 2.6 2.33.0 3.52.5

Assumed Protection Value (dB) 14.1 18.0 26.1 34.1 34.737.9 38.0L = 20 dB

(OTH)

(BTH)

2.7 M = 30 dB

M = 28 dB

Classification:

ClearTrak™ NRX EN 352-1:2020

Testing was conducted by Michael and Associates, Inc. Report Q7140A

SNRm = 33.8 Hm = 37.7

SNRs = 1.8 Hs = 2.1

Mm = 31.5 Lm = 24.5

Ms = 1.6 Ls = 2.5

SNRm = 33.3 Hm = 38.6

SNRs = 2.5 Hs = 2.1

Mm = 30.8 Lm = 23.3

Ms = 2.5 Ls = 2.9

Classification:

ClearTrak™ NRX EN 352-1:2020

Testing was conducted by Michael and Associates, Inc. Report Q7139A

EN 352-6:2020

The European Union testing was conducted by Michael and Associates, Inc. Report

Q7224A and Q7225A.

PPE (EU) 2016/425 is met by compliance to EN 352-1:2020, EN 352-6:2020. PPE

Regulation 2016/425 on personal protective equipment, as amended to apply in

Great Britain.

The sound level from the headset speakers can exceed the permitted daily exposure

levels. Therefore, the allowable usage time is dependent on the input signal.

See table below:

An electrical input level of 765.1 mV corresponds to an equivalent sound output level

(mean + one standard deviation) of 82 dB(A) over 8 hours.

A warning that this product may not be used for entertainment since the output level

is not limited to the necessary innocuousness level

Approved Body for UKCA: Santa Technology Centre Ltd., Wyndham Way, Telford Way,

Kettering, Northamptonshire, NN16 8SD (Approved Body No. 0321)

Notified Body responsible for EU type examination: SATRA Technology Europe, Ltd.,

Bracetown Business Park, Clonee,Co.Meath, D15 YN2P, Ireland (Notified Body No. 2777)

Input Signal

dBV mV Mean

Mean +

Std.

Dev.

-5

1.8 79.3

1.8 94.1

01.8 84.3

1.8 89.2

562.3

3162.3

1778.3

1000

77.6

92.3

82.5

87.5

St. Dev.

Allowable

Duration

(hours)

0.5

4.7

1.5

a) Adjustable Headband

b) Audio cross-over cable

c) Ear seals

d) Noise canceling microphone

e) Radio Connector Cable

Supplied Equipment

ClearTrak™ NRX Headset (Figure 1-2)

Figure 1

Figure 2

ClearTrak™ NRX Headset Instructions for Use

Installation

WARNING – Substitution of components may impair intrinsic safety /Avertissement: La

substitution des composants peut nuire à la sécurité intrinsèque. To prevent ignition of

flammable or combustible atmospheres, disconnect power before servicing / Pour éviter

l'inflammation d'atmosphères inflammables ou combustibles, débranchez l'alimentation

avant l'entretien

Notes: Cable length is restricted to that provided with this apparatus. Additional cable

between radio and this audio apparatus shall not be provided in field.

This IS audio accessory must be installed in accordance with this manual, NEC (ANSI/NFPA

70, including Article 504.30B) for US installations, Section 18 of the Canadian Electrical Code

for Canadian installations and ISA RP 12.06.01 for installing intrinsically safe equipment, or

other local codes as applicable.

Radio output current must be limited by a resistor such that the output voltage-current

plot is a straight line drawn between open-circuit voltage and short-circuit current.

To maintain intrinsic safety, selected radio must be third party certified as providing

intrinsically safe circuits for the application, and have entity parameters as shown in Table 1

and Table 2.

1. Turn the radio off.

In addition, installation of the headset while the radio is on may cause the radio to

transmit constantly, locking up your radio system. If this should happen, turn off

the radio. The radio can then be turned back on, restoring normal operations.

2. Remove any dust caps or covers from radio accessory connector.

3. Attach headset to the radio accessory connector.

4. Tighten mounting thumbscrew or accessory clamps, if required.

≤

Headset Radio

Ui ≥

≥

( or Pmax )

( Voc or Vt )

( Isc or It )

Co ( or Ca )

Table 1:

27CZ

UL 22 ATEX 2711

0539 II 1 G

-30˚C < Ta < +75 ˚C

Ex ia IIC T4 Ga

IECEx UL 22.0016

Radio Device for Use in Hazardous Locations

For IIC Gas Rating: Class I, Div. 1; Groups A, B, C, and D

Class II, Div. 1 Groups E, F, and G; Class III, Div. 1, T4;

Class I, Zone 0, AEx ia IIC T4 Ga; Ex ia IIC T4 Ga

EN IEC60079-0:2018

EN60079-11:2012

IEC60079-0:2017

IEC60079-11:2011

Ex ia IIC T4 Ga

Lo/Ro

≤

( or Vmax )Uo

( or I max ) Io

( or La/Ra )

0843

Accessory connector is attached

to radio accessory jack which can

be located on the side, top or

bottom of a radio model. See

OEM radio instruction booklet.

Table 2:

Model Li CiIi Ui

V4-11222-S

V4-11223-S

V4-11226-S

V4-11227-S

V4-11230-S

V4-11232-S

V4-11233-S

V4-11234-S

V4-11235-S

V4-11231-S

/Ri

43.2µH/Ω36nF 1.25W

360mA

43.2µH/Ω36nF 9.6V

360mA

43.2µH/Ω36nF 9.6V

360mA

43.2µH/Ω36nF 9.6V

360mA

43.2µH/Ω36nF 360mA

43.2µH/Ω36nF 9.6V

360mA

43.2µH/Ω36nF 9.6V

360mA

43.2µH/Ω36nF 9.6V

360mA

9.6V

43.2µH/Ω36nF 9.6V

360mA

43.2µH/Ω36nF 9.6V

360mA

9.6V

1.25W

• Use a soft cloth to remove dirt and debris from the headset.

• Use a damp soft cloth to wipe down the ear seals.

• Avoid full immersion of the ClearTrak™ NRX headset in liquid for cleaning.

Storage

When not in use, store the headset in temperatures between -40° and +50°C.

Wearing the Headset And Boom Mic Placement (Figure 8

and Figure 9

)

1. Identify the left and right ear seals. The push-to-talk (PTT) button is located on the

back of the left ear cup.

2. For over-the-head version adjust ear cup height by pulling or pushing on the cups.

For the behind-the-head version adjust the Velcro head strap for best fit/comfort.

3. Place the headset over-the-head.

4. For effective sound protection, be sure that the ear seals are completely sealed

around the ear and obstacles such as hair, jewelry, or clothing are out of the way.

5. Position the boom microphone (mic) so that the microphone is about 1/4 inch from

the mouth.

6. Position the mic element so that the mic symbol on the boom faces directly toward

the user's mouth.

Figure

Maintenance

Replacing the Ear Seals

The ear seals are mounted in a removable frame for easy replacement.

1. Remove the ear seal by sliding

fingers under the inside of the frame

and pulling it straight out with a firm

motion. See figure 11.

2. The foam liner inside the ear seal will

fall out. Replace it with a new one.

See figure 12.

3. Position a new ear seal over the ear

cup. Align the TOP of the ear seal

with the TOP label inside the ear cup.

See figure 13.

4. Press firmly to squeeze the ear seal

into the cup until it snaps into place.

See figure 14.

Figure

Cleaning the Headset

Figure

Incorrect Cable

Debris in microphone

Problem Possible Causes Suggested Acon

Troubleshooting

Cannot hear or transmit

over radio

Poor transmission

quality

Low radio receiveLow radio receive

volumevolume

Check volume settings

on the radio

Radio volume con-

trolled at radio, not by

headset buttons

Boom mic connection

poor

Check mic plug connection

at the back of the headset

Remove wind sock and

inspect microphone

Boom microphone

poorly positioned

Check positioning of mic

and make sure mic symbol

is facing the mouth

Check radio and PTT cable

compatibility

Radio turned off/

wrong channel

Poor connection

between headset and

radio

Check all connections

between headset and

radios

Information on Disposal of Old Electrical and Electronic Equipment (applicable

for EU countries that have adopted separate waste collection systems).

Products with the symbol (crossed-out wheeled bin) cannot

be disposed as household waste.

Old electrical and electronic equipment should be recycled

at a facility capable of handling these items and their waste

byproducts. Contact your local authority for details in locating

a recycle facility nearest to you. Proper recycling and waste

disposal will help conserve resources while still preventing

detrimental effects on our health and the environment.

Production Registration

your product becomes available. https://go.otto-comm.com/product-registration

This manual can be found in French, German and Spanish

at www.otto-comm.com/support

Ce manuel peut être consulté sur

www.otto-comm.com/support

Dieses Handbuch ist in Deutsch verfügbar unter:

www.otto-comm.com/support

Puede encontrar la versión en espanñol de este manual en:

www.otto-comm.com/support

10 West Main Street

Carpentersville, IL U.S.A. 60110

Toll Free Phone: 888-234-OTTO (6886)

Phone: 847-428-7171

Fax: 847-551-1343

E-mail: [email protected]

www.otto-comm.com

804495 Rev. A

Aug 2022

OTTO ClearTrak NRX Owner's manual

Brand: OTTO

Model: ClearTrak NRX

Category: Mobile headsets

Type: Owner's manual

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OTTO ClearTrak NRX Owner's manual

OTTO ClearTrak NRX Owner's manual

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