WIKA TGS73
WIKA TGS73 – (Gas-actuated thermometer with switch contact) WIKA/Germany
Applications
- Control and regulation of industrial processes
- Monitoring of plants and switching of circuits
- Universally suitable for machine building, plant, tank, equipment manufacturing and food industry
- Temperature measurement without medium contact
- Mounting in instrument boards, control cabinets, control panels
Special features
- Instruments meet the highest standards of measurement technology
- Case and stem from stainless steel
- For external mounting on pipes and tanks
- 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 or in places that are difficult to access and, at the same time, circuits need to be switched, the gas-actuated thermometer with switch contacts finds its use.
Due to the wide variety of possible designs, the model TGS73 gas-actuated thermometers can be perfectly adapted to any process connection or location. With the adjustable stem and dial version, the case can be adjusted precisely to the desired viewing angle. With the contact bulb version (without direct contact with the medium), the temperature can be measured and controlled even when the pipe diameter is extremely small. The contact bulb is intended for external mounting on pipes and tanks. When mounting this thermometer version, it must be ensured that the contact bulb is in contact with the measuring point over its complete length
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 or below the desired set point.
As switch contacts, magnetic snap-action 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 TGS73
Measuring element | Gas-pressure inert gas filling, physiologically safe |
Nominal size in mm | ■ 100
■ 160 |
Connection location | ■ Back mount (axial)
■ Lower mount (radial) ■ Back mount, adjustable stem and dial ■ Version with capillary |
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 | Class 1 at 23 °C ±10 °C ambient temperature |
Rated operating ranges and conditions | DIN 16196 (EN 13190) |
Stem diameter | 8 mm
Option: ■■ 6 mm ■■ 10 mm ■■ 12 mm others on request |
Working range | |
Continuous load (1 year) | Measuring range (DIN 16196) |
Short time (max. 24 h) | Scale range (DIN 16196) |
Window | Laminated safety glass |
Contact bulb | 120 x 22 x 12 mm |
Adjustable stem and dial | Swivelling 90°
360° rotatable |
Capillary |
Ø 2 mm
Minimum curve radius: 6 mm Length to customer specification Option: Armoured coating for capillary (Ø 7 mm spiral protective sleeve, flexible or PVCcoated) |
Mounting types for instruments with capillary | ■ Surface mounting flange, stainless steel
■ Instrument mounting bracket, aluminium die-casting ■ Panel mounting flange, stainless steel |
Dampening (option) |
■ With liquid dampening
■ With food-compatible liquid dampening |
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 2) | |
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 applicable to instruments with capillary
2) For hazardous areas, the permissible temperatures of the contact model 831 shall apply exclusively (for permissible temperature ranges see page 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. |