WIKA TGS 55

WIKA TGS 55 – (Bimetal thermometer with switch contact) WIKA/Germany

Applications

Control and regulation of industrial processes
Monitoring of plants and switching of circuits
Chemical industry, petrochemical industry, process technology and food industry
For aggressive media

Special features

High reliability and long service life
Universal application
Case and stem from stainless steel
Instruments with inductive contacts for use in hazardous areas
Instruments with contacts for PLC applications

Description

Wherever the process temperature has to be indicated on-site and, at the same time, circuits need to be switched, the bimetal thermometer with switch contacts finds its use.

Switch contacts (electrical alarm contacts) make or break circuits dependent upon the pointer position of the indicating measuring instrument. The switch contacts are adjustable over the full measuring range. The instrument pointer (actual value pointer) moves freely across the entire scale range, independent of the setting.

The set pointer can be adjusted via the window using a removable adjustment key (mounted on the terminal box).

Switch contacts consisting of several contacts can also be set to a single set point. Contact actuation is made when the actual value pointer travels beyond and below the desired set point.

As switch contacts, inductive contacts and electronic contacts are available. Inductive contacts can be used in hazardous areas. For triggering programmable logic controllers (PLC), electronic contacts can be used.

WIKA TGS55

Measuring element	Bimetal coil
Nominal size in mm	100
Connection location	■■ Back mount (axial) ■■ Lower mount (radial) ■■ Back mount, adjustable stem and dial
Connection designs	■■ S, Standard (threaded connection) 1) ■■ 1, Plain stem (without thread) ■■ 2, Male nut ■■ 3, Union nut ■■ 4, Compression fitting (sliding on stem) ■■ 5, Union nut and loose threaded connection
Unit (scale range)	°C Option: ■■ °F ■■ °C/°F (dual scale)
Process connection	■■ Plain, without thread ■■ G ½ B ■■ ½ NPT ■■ G ½ female ■■ ½ NPT female ■■ M20 x 1.5 ■■ M24 x 1.5 female others on request
Accuracy class per DIN 16196 2)	With single contact	With double contact
Stem diameter 6 mm	Class 2	Class 2
Stem diameter 8 mm	Class 1	Class 2
Stem diameter ≥ 10 mm	Class 1	Class 1
Stem diameter	8 mm Option: ■■ 6 mm ■■ 10 mm ■■ 12 mm
Working range
Continuous load (1 year)	Measuring range (DIN 16196)
Short time (max. 24 h)	Scale range (DIN 16196)
Window	Instrument glass Option: ■■ Laminated safety glass ■■ Clear non-splintering plastic
Wetted materials
Stem, process connection	Stainless steel 316SS
Non-wetted materials
Case, bayonet ring	Stainless steel 304SS (option: stainless steel 316SS)
Dial	Aluminium, white, black lettering
Pointer	Aluminium, black, adjustable pointer
Ingress protection per IEC/EN 60529	IP65 Option: IP66
Permissible temperatures 3)
Ambient (at the case)	-20 … +60 °C [-4 … 140 °F]
Storage and transport
Without liquid dampening	-50 … +70 °C [-58 … +158 °F]
With liquid dampening	-40 … +70 °C [-40 … +158 °F]
Permissible operating pressure at the stem	max. 25 bar, static
Electrical connection	Cable socket PA 6, black According to VDE 0110 insulation group C/250 V Cable gland M20 x 1.5 Strain relief 6 screw terminals + PE for conductor cross-section 2.5 mm² Dimensions see page 9 others on request
1) Not for version “adjustable stem and dial” 2) Adjustable stem and dial version only available in class 2 3) For hazardous areas, the permissible temperatures of the contact model 831 shall apply exclusively (for permissible temperature ranges see Seite 5). These must not be exceeded at the instrument either (for details see operating instructions). If necessary, measures for cooling (e.g. measuring point insulation) have to be taken.