Thermatel TG1 Thermal Dispersion Switch DESCRIPTION Thermatel TG1 is a two-wire, intrinsically safe switch for liquid or gas flow, level, or interface detection using the proven thermal dispersion technology. The switch consists of a DIN rail mounted electronics unit and a remote sensor with separation of up to 1650 feet (500 meters) Applications for the TG1 include low flow detection, high temperature operation, and high viscosity and coating applications FEATURES ELECTRONICS • Two-wire intrinsically safe design with integral barrier • LED indication provides continuous indication of flow rate relative to switch point • 24 VDC input power SENSOR • Standard twin tip sensor: • Corrosive resistant materials • Pressures to 3000 psig (205 bar) • Standard spherical tip sensor: • Output: • 2 A SPDT alarm relay with goldflash contacts • mA output signal for diagnostic fault indication per NAMUR NE43 • High/Low fail safe selection • Adjustable set point and time delay AGENCY FEATURES • General purpose service • Stainless steel only • High temperature sensor: • Temperatures up to 850° F (450° C) • Pressures up to 6000 psi (413 bar) • Low flow body with 1⁄4" and 1⁄2" connections APPROVALS AGENCY APPROVAL CLASSES CENELEC EEX IA II B T5, Intrinsically Safe These units have been tested to EN 50081-2 and EN 50082-2 and are in compliance with the EMC Directive 89/336/EEC. MODEL NUMBER ELECTRONICS AND SENSOR HOUSING T G 1 1 2 0 D 2 A 0 SENSOR BASIC TE TM Length in inches Length in centimeters PROBE TYPE A B C D Standard spherical tip Standard spherical tip with heat extension Standard twin tip Standard twin tip with heat extension maximum 250° F (121° C) / maximum 600 psi (41 bar) maximum 392° F (200° C) / maximum 600 psi (41 bar) maximum 250° F (121° C) / maximum 3000 psi (205 bar) maximum 392° F (200° C) / maximum 3000 psi (205 bar) MATERIALS OF CONSTRUCTION A 316/316L stainless steel PROCESS CONNECTION SIZE 11 Threaded 3⁄4" NPT INSERTION LENGTH (determined by second digit of model number) Specify in 1" (1 cm) increments Minimum 2 inches (5 cm), Maximum 130 inches (330 cm) Example: 5 inches = 0 0 5 Example: 130 cm = 1 3 0 A 1 1 NOTE: Other materials of construction and flange connections are available. 0 High temperature sensor and low flow body sensor are available. CONNECTING CABLE CABLE 009 – 7146 Shielded twisted pair instrument cable CABLE LENGTH Specify per foot (0.3 meter) increments Minimum 10 feet (3 meters), Maximum 999 feet (305 meters) Example: 10 feet= 0 1 0 0 0 9 7 1 4 6 5300 Belmont Road • Downers Grove, Illinois 60515-4499 • 630-969-4000 • Fax 630-969-9489 • www.magnetrol.com 6291 Dorman Road • Mississauga, Ontario L4V-1H2 • 905-678-2720 • Fax 905-678-7407 Heikensstraat 6 • B 9240 Zele, Belgium • 052 45.11.11 • Fax 052 45.09.93 Regent Business Ctr., Jubilee Rd. • Burgess Hill, Sussex RH15 9TL U.K. • 01444-871313 • Fax 01444-871317 ©2001 Magnetrol International, Incorporated. All rights reserved. Printed in the USA. Magnetrol and Magnetrol logotype are registered trademarks of Magnetrol International. Performance specifications are effective with date of issue and are subject to change without notice. The brand and product names contained within this document are trademarks or registered trademarks of their respective holders. BULLETIN: P54-105 EFFECTIVE: November 2000