CTex-Kit

Classification of the optris CT sensing heads according to EN 60079-0/ EN 60079-11 (category of simple electrical devices)

General Specification

• Operating temperature: -20 °C to 60 °C
• Storage temperature: -20 °C to 60 °C
• Size: 122 x 122 x 121 mm
• Material: stainless steel
• Environmental rating (acc. to IEC 60529): clamping carrier IP 20 / housing IP 40

Ex-proof Approvals

Classification of the optris CT sensing heads according to EN 60079-0/ EN 60079-11

Europe (CENELEC):

• for zone 1: PTB 01 ATEX 2053X
• for zone 2: PTB 01 ATEX 2054X

IECEx PTB 08.0057X

USA:

• UL E81680V1S3

Canada:

• CSA 1284580 (LR 43394)

Classes, Divisions and Groups

Europe (CENELEC):

• for zone 1: E II (1/2) GD [EEx ia/ib] IIC/IIB
• for zone 2: E II 3 GD EEx nA II T4

USA:

• • I.S. circuits for: class I, II, III,

division 1, groups A, B, C, D, E, F, G

• • I.S. circuits for: class I, zone 0, group IIC

class I, division 2, groups A, B, C, D
class I, zone 2, group IIC

Canada:

• • I.S. circuits for: class I, groups A, B, C, D;

class II, groups E, F, G
class III
class I, division 2, groups A, B, C, D
class I, zone 2, groups IIC

Can I shorten the cable between the sensor head and the electronics box?

It is recommended not to change the sensing cable length, as the cable’s impedance is part of the sensor calibration. However, in all CT LTex models, the sensing head cable can be shortened if absolutely necessary. Shortening the cable will cause an additional measuring error of about 0,1 K/m.

Can I use the CT LTex as 2-wire sensor?

Please do not connect a supply voltage to the analog outputs as this will destroy the output. The CT LTex is not a 2-wire sensor. Please review the CSmicro series as this is a two-wire sensor.

• 1x aluminum housing with mounting appliance for two zener barriers and CT electronics.
• 2x zener barriers, type 9002/22-032-300-111 (R. STAHL AG)