EXPLOSION PROTECTION CERTIFICATE OF CONFORMITY

Cert NO.GYJ15.1227X

This is to certify that the product

Miniature Resistance Thermometer

manufactured by WIKA Alexander Wiegand SE & Co.KG (Address:Aiexander-Wiegand-Stralle 30, 63911 Klingenberg, Germany)

which model is

Ex marking

product standard

drawing number

TR34-E

Ex ia ll C T1~T6 Ga Ex iaD 20 T135

I

14065688.01 Sheet 1

has been inspected and certified by NEPSI, and that it conforms to GB 3836.1-2010,GB 3836.4-2010,GB 3836.20-2010,GB 12476.1-2013,

GB 12476.4-2010 Ttlis Approval shall remain in force until 2020.10.20 Remarks !.Conditions for safe use are specified in the attachment to this certificate.

2.Symbol "X" placed after the certification number denotes specific c<;.tditions of use, which are specified in the attachment to this certificate. 3.Model designation is specified in the attachment to this certificate. 4.Intrinsic safety parameters specified in the attachment to this certificate. S.This certificate is also applicable for the product with the same type manufactured by WIKA Instrumentation (Suzhou) Co., Ltd. (Address: No.81, Ta Yuan Road SND Suzhou, PR China 215011)

Director National Sup&-~rft.4iil.

Explosion Pro,reGi:IH:llfl

Issued Date

This Certificate is valid for products compatible with the documents

103 Cao Bao Road Shanghai200233,Chlna

http-./ /www.nepsl.org.cn Emall: lnfo@nepsl.org.cn

Tel: +86 21 64368180 Fax: +86 21 64844580

Edition OS

~*~ttBtt~~-~~ll{tffl]L~M National Supervision and Inspection Centre for

Explosion Protection and Safety of Instrumentation

(GYJ15.1225X/GY J15.1226X/GY J15.1227X) (Attachment I )

Attachment I to GYJ15.1225X/GYJ15.1226X/GYJ15.1227X

TR21iEtia- , TR31-u-E-~Jg, TR34-E-~- series Miniature Resistance Thermometers, manufactured by WIKA

Alexander Wiegand SE & Co.KG or WIKA Instrumentation (Suzhou) Co., Ltd ., has been certified by National

Supervision and Inspection Center for Explosion Protection and Safety of Instrumentation (NEPSI). The

Miniature Resistance Thermometers accords with following standards:

GB3836.1-201 0 Explosive atmospheres-Part 1: Equipment- General requirements

GB3836.4-201 0 Explosive atmospheres-Part 4: Equipment protection by intrinsic safety "i"

GB3836.20-201 0 Explosive atmospheres-Part 20: Equipment with equipment protection level (EPL) Ga

GB12476.1-2013 Electrical apparatus for use in the presence of combustible dust-Part 1: General requirements

GB124 76.4-2010 Electrical apparatus for use in the presence of combustible dust-Part 4: Protection by intrinsic

safety "iD"

Miniature Resistance Thermometers has the Ex marking Ex ia II C T1-T6 Ga or Ex iaD 20 T135.

The certificate numbers are GYJ15.1225X(TR21-g-E -ti), GYJ15.1226X(TR31-a-E- 6) and GYJ15.1227X

(TR34-E-~~.

The certifed type codes are as following:

TR21-~-E~- , in which:

Sl indicates design, which could be A, B or C.

indicates output signal, which could be P*, R*, TT or TB.

indicates other information which are not Ex-relevant.

TR31-g-E-l2Q-!t, in which:

a indicates design, which could be 3 or K.

indicates output signal, which could be P*, S* or TT.

indicates other information which are not Ex-relevant.

TR34-E- , in which:

indicaties output signal , which could be P*, S* or TT.

:g indicates other information which are not Ex-relevant.

Page 1 of 5

(GY J15.1225X/GY J15.1226X/GY J15.1227X) (Attachment I )

1. Special conditions for safe use

The suffix "X" placed after the certificate number indicates that this product is subject to special conditions for

safe use:

• A reverse heat flow from the process exceeding the permissible ambient temperature of the transmitter or

the enclosure is not allowed and shall be avoided by a suitable thermal insulation or a suitable neck length

of the tubing.

• The wall thickness of the thermometer is greater than 0.2mm, but less than 1 mm. The device may not be

exposed to environmental conditions which may negatively affect the partition wall. A thermowell with a

suitable minimum wall thickness can be used alternatively.

• Using a thermowell/neck tube the device shall be constructed in a way that allows an installation that results

in a sufficient tight joint (IP67) or a flameproof joint (GB3836.2-201 0) in the direction of the less endangered

area.

• Ambient temperature range (Ta) for variants with optional connection cable with molded connector M1 2X1 is

limited to -2o·c -+so·c.

• Ambient temperature range (Ta) for variants with optional adapter M12-EN 175301 is limited to -4o·c

-+s5·c.

2. Conditions for safe use

2.1 The relationship between type code, temperature class (or maximum input power), ambient temperature

range and medium temperature is as following:

• TR21- -En-B. TR21-g-ETB- , TR31 -3-E-TI- , TR34-E-TI- : (models with built-in transmitter, standard

design with connector M12)

gas applications (Ex ia Il C T1-T6 Ga)

Temperature Ambient temperature Medium temperature Maximum surface temperature (T max) Class range at the tip of the probe or thermowell

T6 -40 ·c -+45 ·c Without neck tube: -50 ·c -+ 150 ·c

T5 -4o·c -+so·c T M( medium temperature) +self-With neck tube: -5o·c-+25o·c heating(1 5K)note1

T1-T4 -4o·c -+s5·c

dust applications (Ex 1aD 20 T1 35)

Pi Ambient temperature

Medium temperature Maximum surface temperature (T max)

range at the tip of the probe or thermowell

750mW -40oC-+40°C

650mW -40oC-+ ?Ooc Without neck tube: -5o·c-+15o·c T M( medium temperature) + self-

With neck tube: -5o·c -+25o·c heating( 15K) note1 550mW -40°C-+85°C

Page 2 of 5

~ I

I

(GY J15.1225X/GY J15.1226X/GY J15.1227X) (Attachment I )

• TR31-K-E-TT- :(models with built-in transmitter, variants with permanently connected cable)

gas applications (Ex ia II C T1-T6 Ga)

Temperature Ambient temperature Medium temperature Maximum surface temperature {T max) Class range at the tip of the probe or thermowell

T6 -2o·c -+45·c Without neck tube: -5o·c-+15o·c

T5 -2o·c-+6o·c T M( medium temperature)+ self-With neck tube: -5o·c-+25o·c heating(15K) notet

T1-T4 -2o·c-+8o·c

dust applications (Ex iaD 20 T135)

Pi Ambient temperature

Medium temperature Maximum surface temperature (T max)

range at the tip of the probe or thermowell

750mW -20°C-+40°C

650mW -20°C-+ 70oc Without neck tube: -5o·c-+15o·c T M( medium temperature)+ self-

With neck tube: -5o·c-+25o·c heating( 15K) note! 550mW -20°C- +80°C

.. Note1: The spec1al cond1t1ons for safe use shall be considered. For models w1th bu1 lt-1n transmitter the

temperature rise by self-heating of the sensor at the tip of the probe is 15K maximum.

• TR34-E-P*-~, TR34-E-S*- , TR31 -3-E-P*-~· TR31-3-E-S*- , TR21-a-EP*- , TR21-~-ER*- : (models

without transmitter, standard design with connector M12)

gas applications (Ex ia II C T1-T6 Ga)

Temperature Ambient temperature Medium temperature Maximum surface temperature (T max)

Class range at the tip of the probe or thermowell T6 -50 ·c -+80 ·c

Without neck tube: -5o·c -+15o·c T5 -5o ·c -+85 ·c T M(medium temperature)+ self-

With neck tube: -5o·c-+25o·c heatingnote2 T1-T4 -50 ·c -+85 ·c

dust applications (Ex 1aD 20 T135)

Pi Ambient temperature

Medium temperature Maximum surface temperature (T max)

range at the tip of the probe or thermowell

750mW -50°C-+40°C

650mW -50°C-+ 70°C Without neck tube: -5o·c-+15o·c T M( medium temperature)+ self-

With neck tube: -5o·c-+25o·c heatingnote2

550mW -50°C-+85°C

• TR31-K-E-P*-~. TR31-K-E-S*-~: (models Without transmitter, vanants w1th permanently connected cable)

gas applications (Ex ia II C T1-T6 Ga)

Temperature I Ambient temperature Class range

Medium temperature

Page 3 of 5

Maximum surface temperature {T max) 11

at the tip of the probe or thermowell

·~

·.~ ..

.. -1!111

(GY J15.1225X/GY J15.1226X/GY J15.1227X) (Attachment I )

T6 -20"C-+45"C T5 -20 "C-+60"C

Without neck tube: -50"C-+150"C T M( medium temperature) +self-

T1-T4 -2o·c -+ao·c With neck tube: -50"C-+250"C heatingnote2

dust applications (Ex 1aD 20 T135)

pi Ambient temperature Medium temperature Maximum surface temperature (T max) range at the tip of the probe or thermowell

750mW -20oC-+40oC

650mW -20°C-+ 70°C Without neck tube: -50"C- +150"C T M( medium temperature) + self-

With neck tube: -50"C-+250"C heatingnote2

550mW -20°C-+80°C

Note2: The special conditions for safe use shall be considered. For models without built-in transmitter the applied

power will only be converted at the tip of the probe. Temperature rise by self heating of the sensor at the tip of

the probe, depending on the supplied power, shall be calculated with the following formula:

Temperature rise = supplied power X thermal resistance (Rth)

Thermal resistance (Rth) = 335KJW

2.2 The relationship between type code, applications and input intrinsic safety parameters are as following:

• TR21-~-ETI-i;i, TR21-~ETB- , TR31-a-E-TI- , TR34-E-TI-g: (terminals+/-)

Input safety Gas application Dust application

parameters Ui 30V 30V

-\ h / 120mA 120mA ~ Pi 800mW 750/650/550mW '! Ci 29.7nF 29.7nF

Li =0 =0 R34-E-S*-~, TR31-3-E-P*-~, TR31-~-E-S*-~. TR31-il-E-P*-~, TR21 • TR34-E-P*- I T

i;i: (terminals 1-4)

Input safety Gas application Dust application

parameters Ui 30V 30V h 550mA 250mA

_"':_ Pi 1500mW 750/650/550mW ci =0 =0 L =0 =0

~6 -EP* -a. TR21-J ER*-

2.3 Forbid end user to change the configuration to ensure the equipment's explosion protection performance.

2.4 When installation, use and maintenance of Miniature Resistance Thermometers, observe following standards

GB3836.13-2013 "Explosive atmospheres- Part 13: Equipment repair, overhaul and reclamation"

G83836.15-2000 "Electrical apparatus for explosive gas atmospheres Part 15: Electrical installations in

hazardous area (other than mines)"

Page 4 of 5

(GY J15.1225X/GY J15.1226X/GY J15.1 227X) (Attachment I )

GB3836.16-2006 "Electrical apparatus for explosive gas atmospheres Part 16: Inspection and maintenance of

electrical installation (other than mines)"

G83836.18-201 0 "Explosive atmospheres - Part 18: Intrinsically safe system"

GB50257 -2014 "Code for construction and acceptance of electric device for explosion atmospheres and fire

hazard electrical equipment installation engineering"

G815577 -2007 "Safety regulations for dust explosion prevention and protection"

GB12476.2-201 0 "Electrical apparatus for use in the presence of combustible dust- Part 2: Selection and

installation •

3. Manufacturer's Resposibility

3.1 Special condition for safe use specified above should be included in the instruction manual.

3.2 Manufacturing should be done according to the documentation approved by NEPSI.

Page 5 of 5