Name: Bimetal thermometer with switch contacts
Brand: WIKA
SKU: TGS55

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 instruments. 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 cable socket).

for further approvals see page 8

Bimetal thermometer with switch contacts, model TGS55

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.

Identification

Model	TGS55
Product family	TGS
Subcategory	With switch contacts

Measuring range

Temperature ranges

−70…+30 °C · −50…+50 °C · −30…+50 °C · −20…+140 °C · +0…+600 °C · −20…+60 °C · −20…+120 °C · +0…+60 °C · +0…+80 °C · +0…+100 °C · +0…+120 °C · +0…+160 °C · +0…+200 °C · +0…+250 °C · +0…+300 °C · +0…+400 °C · +0…+500 °C

Accuracy

Accuracy class

Class 1, Class 2 per DIN 16196

Process conditions

Process connection	M20 x 1.5M24 x 1.5 femaleG ½ B½ NPTG ½ female½ NPT femalePlain, without thread
Process temperature	−60…+500 °C

Electrical characteristics

Output signal	Inductive contact, model 831 · Electronic contact, model 830 E · Inductive contact · Electronic contact
Electrical connection	Cable socket, black Per VDE 0110 insulation group C/250 V Cable gland M20 x 1.5

Materials

Probe material

Stainless steel 316SS

Operating environment

Ambient temperature	−50…+70 °C
IP rating	IP65
Weight	0.7 kg

Certifications and approvals

Certifications	CERoHS
Explosion protection	EACEx ia Zone 1 gas II 2G Ex ia IIC T6/T5/T4 GbZone 21 dust II 2D Ex ia IIIB T85°C/T95°C/T100°C/T135°C DbIECEx Ex ia Zone 1 gas Ex ia IIC T6/T5/T4 GbATEX: Ex ia Zone 1 gas II 2G Ex ia IIC T6/T5/T4 Gb, Zone 21 dust II 2D Ex ia IIIB T85°C/T95°C/T100°C/T135°C DbIECEx: Ex ia IIC T6/T5/T4 Gb, Zone 21 dust Ex ia IIIB T85°C/T95°C/T100°C/T135°C Db

Additional details

Sensor type	bimetal
Probe length	63 mm
Probe diameter	8 mm
Thermowell	No
Datasheet languages	EN

Tables from datasheet

Basic information
Standard	DIN 16196
Nominal size in mm[in]	100 [4"]
Window	■ Instrument glass ■ Laminated safety glass ■ Clear non-splintering plastic
Connection location	■ Back mount (axial) ■ Lower mount (radial) ■ Back mount, adjustable stem and dial
Connection design	→ For drawings, see page 9
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
'Adjustable stem and dial' case version	90° swivelling and 360° rotatable
Dampening, case filling	■ Without ■ With liquid dampening
Material (in contact with the environment)
Case, bayonet ring	■ Stainless steel 304SS ■ Stainless steel 316SS

Measuring element

Type of measuring element	Bimetal coil
Nominal effective range
Continuous load (1 year)	Measuring range (DIN 16196)
Short time (max. 24 h)	Scale range (DIN 16196)

Accuracy specifications

Accuracy per DIN 16196 1)	With single contact	With double contact
Stem diameter 6 mm[0.24 in]	Class 2	Class 2
Stem diameter 8 mm[0.31 in]	Class 1	Class 2
Stem diameter ≥ 10 mm[0.39 in]	Class 1	Class 1

Scale range in °C	Measuring range 1) in °C	Scale interval in °C	Error limit in °C
			Class 1	Class 2
-70 ... +30	-60 ...+20	1	1.5	3.0
-50 ... +50	-40 ...+40	1	1.5	3.0
-30 ... +50	-20 ...+40	1	1.5	3.0
-20 ... +60	-10 ...+50	1	1.5	3.0
-20 ... +120	0 ... 100	2	3.0	6.0
-20 ... +140	0 ... 120	2	3.0	6.0
0 ... 60	10 ... 50	1	1.5	3.0
0 ... 80	10 ... 70	1	1.5	3.0
0 ... 100	10 ... 90	1	1.5	3.0
0 ... 120	10 ... 110	2	3.0	6.0
0 ... 160	20 ... 140	2	3.0	6.0
0 ... 200	20 ... 180	2	3.0	6.0
0 ... 250	30 ... 220	5	3.75	7.0
0 ... 300	30 ... 270	5	7.5	15.0
0 ... 400	50 ... 350	5	7.5	15.0
0 ... 500	50 ... 450	5	7.5	15.0
0 ... 600	100 ... 500	10	15.0	30.0

View all (20)

Further details on: Scale range

Unit	■ °C ■ °F ■ °C/°F (dual scale)
Dial
Scale graduation	■ Single scale ■ Dual scale
Scale colour	Single scale	Black
	Dual scale	Red
		Other colours on request
Material	Aluminium
Pointer
Version	Adjustable pointer
Pointer colour	Black
Material	Aluminium

Process connection

Thread size	■ Plain, without thread ■ G½B ■ ½NPT ■ G½female ■ ½NPTfemale ■ M20 x 1.5 ■ M24 x 1.5 female
Material (in contact with the environment)	Stainless steel 316SS
Stem
Diameter	■ 6 mm[0.24 in] ■ 8 mm[0.31 in] ■ 10 mm[0.39 in] ■ 12 mm[0.47 in]
Material (wetted)	Stainless steel 316SS
Thermowell/protection tube	In principle, the operation of a mechanical thermometer is possible without a thermowell/protection tube with low process-side loading (low pressure, low viscosity and low flow velocities). However, in order to enable exchanging the thermometer during operation (e.g. instrument replacement or calibration) and to ensure a better protection of the measuring instrument and also the plant and the environment, it is advisable to use a thermowell/protection tube from the extensiveWIKA portfolio. →For further information on the wake frequency calculation, see Technical information

Output signal
Type of contact	■ Inductive contact, model 831 (→ see page 5) ■ Electronic contact, model 830 E (→ see page 6)
Switching technology
Inductive contact, model 831	■ Suitable for use in hazardous areas with corresponding control unit (model 904.xx) ■ Long service life due to non-contact sensor ■ Low influence on the indication accuracy ■ Fail-safe switching at high switching frequency ■ Insensitive to corrosion ■ Also available in safety version
Electronic contact, model 830 E	■ For direct triggering of a programmable logic controller (PLC) ■ Long service life due to non-contact sensor ■ Low influence on the indication accuracy ■ Fail-safe switching at high switching frequency ■ Insensitive to corrosion
Contact setting	■ Contact adjustable, adjustment key mounted on the cable socket ■ Contacts fixed, without adjustment lock ■ Contact adjustment lock leaded (tamper-proof) ■ Contact adjustment key fixed

Output signal: Inductive contact, model 831

Connection method	Inductive contact
Number of switch contacts	Max. 2 switch contacts
Switching function	Contact versions: ■ 831-N ■ 831-SN, safety version 1) ■ 831-S1N, safety version 1) , inverted signal The switching function of each switch is indicated by index 1 or 2
Model 831.1	Normally open (clockwise pointer motion)
Model 831.2	Normally closed (clockwise pointer motion)
Switch point setting	Set pointers of the contact pressure gauges are freely adjustable over the full scale range
Setting range (recommended)	10 ... 90 %of the scale range (0 ... 100 %onrequest)
Distance between switch points	Up to 2 contacts can be set to an identical set point. For a version with 3 contacts this is not possible.The left (no. 1) or right (no. 3) contact may not be set to the same set point as the other 2 contacts.The required displacement is approx. 30°, optionally to the right or to the left.
Switching current	Depending on the isolating amplifier/control unit used (→ see data sheet AC 08.01)
Switching voltage	Depending on the isolating amplifier/control unit used (→ see data sheet AC 08.01)
Switching power	Depending on the isolating amplifier/control unit used (→ see data sheet AC 08.01)
Permissible temperature ranges in hazardous areas
T6	-20 ...+60 °C [-4 ...+140 °F]
T5 ...T1	-20 ...+70 °C [-4 ...+158 °F]
T135°C	-20 ...+70 °C [-4 ...+158 °F]

Model	Version	Ex version
904.28 KFU8 - SR2 - Ex1.W	1 contact	Yes
904.29 KFU8 - SR2 - Ex2.W	2 contacts	Yes
904.30 KHA6 - SH - Ex1	1 contact	Yes - Safety version
904.33 KFD2 - SH - Ex1	1 contact	Yes - Safety version
904.25 MSR 010-I	1 contact	No
904.26 MSR 020-I	2 contacts	No
904.27 MSR 011-I	Two-point control	No

Output signal: Electronic contact, model 830 E

Connection method	Electronic contact (PNP transistor)
Number of switch contacts	Max. 2 switch contacts
Switching function	Contact versions: ■ 2-wire system ■ 3-wire system The switching function of each switch is indicated by index 1 or 2
Model 830 E.1	Normally open (clockwise pointer motion)
Model 830 E.2	Normally closed (clockwise pointer motion)
Setting range (recommended)	10 ... 90 %of the scale range (0 ... 100 %onrequest)
Distance between switch points	Up to 2 contacts can be set to an identical set point. For a version with 3 contacts this is not possible.The left (no. 1) or right (no. 3) contact may not be set to the same set point as the other 2 contacts.The required displacement is approx. 30°, optionally to the right or to the left.
Switching current	≤ 100mA
Switching voltage	DC 10 ...30V
Type of output	PNP transistor
Residual ripple	Max.10%
No-load current	≤ 10mA
Residual current	≤ 100 µA
Voltage drop (with I max. )	≤ 0.7V
Reverse polarity protection	Conditional U B (the switched output 3 or 4 must never be set directly to minus)
Anti-inductive protection	1 kV, 0.1 ms, 1 kΩ
Oscillator frequency	Approx. 1,000 kHz
EMC	Per EN 60947-5-2

Electrical connections

Connection type	■ Cable socket, black PerVDE 0110 insulation group C/250V Cable gland M20 x 1.5 ■ Connector ■ Rear cable outlet
Wire cross-section	6 screw terminals + PE for conductor cross-section 2.5 mm²
Cable diameter	→ See dimensions from page 10
Pin assignment	Connection details are given on the product label of the instrument. Connection terminals and ground terminals are appropriately marked.
Material	PA 6 (polyamide)

Operating conditions

Ambient temperature range (at the case) 1)	-20 ...+60 °C [-4 ...+140 °F]
Storage temperature range 1)
Without liquid dampening	-50 ...+70 °C [-58 ...+158 °F]
With liquid dampening	-40 ...+70 °C [-40 ...+158 °F]
Max. operating pressure at stem	Max. 25 bar [362.59 psi], static
Ingress protection (IP code) per IEC/EN 60529	■ IP65 ■ IP66

Logo	Description	Country
	EU declaration of conformity	European Union
	EMCdirective
	Low voltage directive
	RoHS directive

Logo	Description	Country
	EU declaration of conformity	European Union
	IECEx 1) Hazardous areas - Ex ia Zone 1 gas Ex ia IIC T6/T5/T4 Gb Zone 21 dust Ex ia IIIB T85°C/T95°C/T100°C/T135°C Db	International
	EAC EMCdirective Hazardous areas 1)	Eurasian Economic Community
	KazInMetr Metrology, measurement technology	Kazakhstan
-	MTSCHS Permission for commissioning	Kazakhstan
	UkrSEPRO Metrology, measurement technology	Ukraine
	Ex Ukraine Hazardous areas	Ukraine
	Uzstandard Metrology, measurement technology	Uzbekistan
-	CRN Safety (e.g. electr. safety, overpressure, ...)	Canada

Certificates

Certificates	■ 2.2 test report ■ 3.1 inspection certificate with 3 test points (optionally with 5 test points)
Calibration	DAkkS calibration certificate

Nominal size	i i l 2 l SW 1 Dimensions inmm l 1
NS	d 1	Ød d 1	1 a for axial	i 2 l a for adjustable stem and dial Ø d
Bauform 100	SW 5 18	8	l 2 15	25

Nominal size	ca.40 l l 2 1 Process connection	Dimensions inmm 3073050.06
NS	G	i	SW	Ø d
100	G½B	8.5 L	27	8
	G¾B	10.5	32	8
	M24 x 1.5	13.5	32	8

Nominal size	l a l 2 G SW Process connection	Dimensions inmm
SW NS	G	1 i	SW	d 4	3073050.06 Ø d Bauform
100	G½B	14	d d 27	26	8 Design 1
	G¾B	16	Ø 32	32	Bauform 3 8
	½NPT	19	22	-	3073050.06 Design 3 8
	¾NPT	20	30	-	8

Nominal size	i i Process connection	Dimensions inmm Bauform Design
25 NS	SW G	i	SW	Ø d
Ø22 100	G½B	20	G 27	8

l Nominal size	Process connection	Dimensions inmm
l 1 NS	G	i	SW	d 4	Ø d
100	G½B	14	27	26	8
G	ca.40 Ø d d G¾B	16	32	32	8
	M18 x 1.5	L 12	24	23	8
	½NPT	19	22	-	8
l 2	¾NPT	20	30	-	8

Bimetal thermometer with switch contacts

Description

Special features

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17 standard articles of family TGS