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RT2(E) Temperature switches explosion proof

All industrial environmentsReduced overall dimensions Good vibration resistanceLCIE 02 ATEX 6219X

0081

II 2 G and D EEx d IIC T6 or T5

Hazardous areas : 1, 2, 21, 22 These temperature switches maintain a constant temperature around a chosen set value. They act as regulator or monitor of an alarm or safety system when the temperature reaches a critical pre-set value. Important Normal operation must be between 10% and 90% of the selected scale. The deadband values in the table overleaf are defined under these conditions. All circuits must be equipped with a safety system protecting them against excess temperature. The length of the bulb is a function of the capillary length and temperature range (see tables). The bulb must be totally immersed in the process fluid, or incorrect readings will result.

Technical Data (20°C)

Fluids All fluids compatible with the measuring element from -40...+350°C

Manufacturing

Explosion-proof housing Epoxy painted aluminium housing Operating ambient temperature From -30...+70°C Wall mounting 2 CHC M6 x 16 screws Storage temperature From -40...+70°C Earth connection Via internal or external terminal block Reproducibility ±2% of F.S. Electrical connection Via internal terminal block with P.G. certified ATEX for cable 7 to 12 mm dia Minimum deadband Depending on the type of microswitch used (see table overleaf) Graduated scale Internal calibrated scale Conform to Low Voltage Directive DBT 73/23/ Directive ATEX 94/9/ Pressure connection St. steel sliding male connection (EN50014, EN50018, EN50281-1-1) Measuring element 9.5 mm dia., 1.4404 (316L) s.s. bulb (standard length = 100 mm) Degree of protection IP 65, NF EN 60529 Weight 2 kg

Operating principle

A vapour filled sensing element actuates a microswitch by means of a piston. The set point is adjusted by means of a compressible spring installed in opposition.

T°

Design and specifications subject to change without noticeData sheet B31.02Page 1www.baumerprocess.com