PRODUCTS

TEMPERATURE SWITCHES TYPE T

FUNCTION

Indfos T Series Temperature Switches are produced using technology provided by Dresser Industries USA, (ASHCROFT Division). These are sturdy, robust and precise devices, for use in process industries.

Available in various ranges covering temperatures from -40 to 400°C, these switches utilise a vapour filled, diaphragm sealed piston actuator. This unique system provides high over temperature withstanding capability and ensures ±1% repeatability at the same time. T Series switches are available in either remote mounted capillary style or direct mounted rigid stem type. Capillary bulb & stem materials are stainless steel as a standard for superior corrosion resistance. Enclosures are available in weather proof (IP 66) and explosion proof (II A, B & C) versions and are die cast aluminium as a standard. A wide variety of 1 SPDT and 2 SPDT microswitches including hermetically sealed microswitches are available to meet different requirements of electrical ratings and environmental conditions.

T Series switches find applications in :

>>    Off Shore Oil Rigs
>>    Chemical & Petrochemical Plants
>>    Power Plants
>>    Steel Mills
>>    Pulp & Paper Mills
>>    Water & Sewage Treatment Plants
>>    Other Corrosive/Explosive Environments
>>    Nuclear Power Plants


SPECIFICATIONS

Enclosure
:
 Die Cast Aluminium (Weather proof or Explosion proof)
Sesing Element
:
 Diaphragm Sealed Piston (Buna-N, Viton, Teflon, Kapton, SS-316 or Monel)
Max Ambient Temp
:
 -30°C to 65°C
Switch Type
:
 1 SPDT / 2 SPDT
Mounting
:
 Surface/ Panel/ Direct
Process Connection
:
 1/4" NPT(F)
     
     
     
     
ORDERING TABLE  
A
T
4
B
2
0
D
T
1
5
0
D
X
N
H
E
150° to 260°F




 A.
ENCLOSURE
 T4
Die Cast Aluminium Weather Proof IP66 Enclosure 3/4" NPT (F) Cable Entry.
 T7
Die cast Aluminium Explosion Proof (Group IIA/IIB ) Enclosure 3/4" NPT(F) Dual Cable Entry.
 T7(IIC)
Die Cast Aluminium Explosion Proof (Group II C) Enclosure 3/4" NPT(F) Dual Cable Entry.

 

 

 

 

 

 

 C.
THERMAL SYSTEM
DIRECT MOUNT THERMAL SYSTEM
CODE
STEM LENGTH
STYLE
TS 027
  70 mm
9.5 mm dia SS-316 stem with 1/2" NPT connection.
TS 040
102 mm
TS 060
152 mm
TS 090
229 mm
TS 120
305 mm
REMOTE MOUNT THERMAL SYSTEM
CODE
CAPILLARY LENGTH
STYLE
T 05030
1.5 Meters
SS-316 Capillary with armouring.
76 mm long/9.5 mm dia bulb.
T 10030
3.0 Meters
T 15030
4.5 Meters
T 20030
6.0 Meters
T 25030
7.5 Meters

  D. OPTIONS
Use Table from Detailed Catalogue

 
 B.
SWITCH TYPE
TYPE
RATING
CODE
1 SPDT
2 SPDT
Narrow dead band
 15 A 250 VAC
 0.4 A 120 VDC
20
61
General purpose
 15 A 250 VAC
 0.25 A 250 VDC
24
64
Heavy duty DC
 10 A 125 VDC
25
66
Environment proof
 15 A 250 VAC
 0.4 A 125 VDC
26
62
Gold plated contacts
 1 A 125/250 VAC
31
70
Hermetically sealed
 5 A 250 VAC
 5 A 30 VDC
32
68
Hermetically sealed narrow deadband
 5 A 125/250 VAC
22
67
Hermetically Sealed Gold plated contacts
 1 A 125/250 VAC
42
71
Variable dead band
 15 A 250 VAC
50
-
Amonia Service
 5 A, 125/250 VAC
21
65
High temperature 300°F(150°C)
 15 A, 125/250 VAC
27
63

  E.   ADJUSTABLE RANGE
MAX. TEMP.
  -40 TO 16°C   205°C
  -20 to 40°C   205°C
  20 to 95°C   205°C
  60 to 125°C   205°C
  70 to 170°C   205°C
  110 to 190°C   260°C
  175 to 275°C   370°C (1)
  260 to 400°C   480°C (1)
(1) Available only in remote mount configuration.
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