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Temperature Switches
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1 Products availableOur Complete range of products are Bimetal Dial Thermometer, Gas Filled Dial Thermometer, Mercury Steel Dial Thermometer and Liquid Filled Dial thermometer.
The Bimetal thermometer employs a bimetal strip in the form of helix, it works on the principle of thermal expansion - two metals having different coefficient of expansions are joined together to form a bimetal. The resultant expansion of bimetal is proportional to temperature that is sensed. Bimetal dial thermometers are simple in construction, but rugged.
They are used for measurement of temperature in most of the industrial applications. They are offered in the range of (-) 50C to 500C. With rigid stem having bottom or back entry. It can also be offered in every angle rotatable construction at 180 A
FeaturesProtection class IP-67Accuracy 1% FSDFast responseBottom/Back entry, every angle constructionHigh repeatability, low hysteresisHermetically sealed case
| Reference standard: | ASME B 40.3, EN 13190 |
| Dial | 63mm,100mm,125mm,150mm in aluminium white background, black markings |
| Case | Die cast aluminium with screwed bezel SS304/SS316 with bayonet bezel |
| Protection | Weatherproof to IP - 67 (IS/IEC 60529:2001) Window : Shatterproof / Toughened glass / Acrylic for Switches |
| Pointer | Aluminium, black |
| Stem | SS304 or SS316 in 6mm,8 mm,10mm,12mm, 14mm,1/4”, 3/8”,1/2”, 5/8” dia and length from 100mm to 1200 mm as standard |
| Connection | ½" NPT (M) as standard in SS304 or SS316 adjustable three piece compression fitting (Any other on request) |
| Range | (-) 50°C to 500°C with a minimum span of 80°C (0-600°C-optional) |
| Accuracy | ±1% FSD (±2% FSD for 63mm dial size) (In accordance with EN 13190) |
| Over range | 125% FSD (110% for 500°C) |
| Reset | External |
| Contact | Single SPST, normally open, closed on rise in temperature (specify action required) adjustable over the entire range, rating 30 VA @ 230 V AC (100mm dial back entry model in SS case only ) |
| Optional | The following can be provided on request 1) Silicon filled for Dampening the Vibrations (Maximum Range:0 to 400°C on account of Limitation of Silicon due to Temperature) 2) Color Band Dials 3) Dual Scale Dials 4)130% Over range 5) Pointer Stopper for Over range and Under range 6) Range of 0 to 600°C 7) Accuracy (±0.5% FSD) 8) Spring loaded Glands and Nipple Union Nipple assemblies measurements (Skin Type) can be provided on request |
Gas filled temperature gauge overcomes most of the limitations of other members of family. It is offered in a very wide temperature range i.e. (-)200 to 800C.
Practically any stem length can be offered and capillary length as long as 25 Mtrs without any loss of accuracy. Inert, non hazardous, non toxic nature of the gas filled system makes it virtually ideal choice of cross section of industries.
FeaturesUse of inert gas N2Suitable for sanitary applicationAll SS constructionRigid stem or capillary typeFast responseNon-polluting, environment friendlyNon-hazardous for the serviceHigh reliabilityIP-67 protectionAccuracy 1% FSD
| System | Gas (N2) filled, case compensated in accordance with SAMA Cl. III B |
| Dial | 63mm,100mm,125mm,150mm, 250mm in aluminium, white background, Black markings |
| Case | SS304 / SS316 with bayonet bezel |
| Protection | Weatherproof to IP-67(IS/IEC 60529:2001) |
| Window | Shatterproof / Toughened glass / Acrylic for Switches |
| Pointer | Aluminium, black with micrometer adjustment |
| Stem | SS316 in 8mm,10mm,12mm,1/4”,3/8”,1/2”, 5/8” dia as standard, SS310 for ranges above 600°C |
| Capillary | SS Solid drawn |
| Capillary Covering | SS covered / SS covered + PVC / SS armoured armoured + PVC / SS + SS armoured (up to 25 Mtrs). |
| Connection | 1/2"NPT (M) adjustable three piece compression fitting in SS304 or S316. (Any other on request) |
| Range | (-) 200°C to 800°C with minimum span of 80°C |
| Accuracy | ± 1% FSD in accordance with EN 13190 |
| Over range | 125% FSD upto 600°C, 110% for 800°C |
| Zero Reset | Micrometer pointer |
| Optional | The following can be provided on request 1) Silicon filled case (Maximum Range : 0 to 400°C on account of Silicon Limitation of Temperature) 2) Pointer Stopper for Over range and Under range 3) Color Band Dials 4) Dual Scale Dials 5) 130% Over range 6) Accuracy (±0.5% FSD) for Rigid Stem or Capillary Models maximum Length upto 3 Mtrs 7) Any Non Standard Bulb Design on request 8) Spring loaded Glands and Nipple Union Nipple assemblies 9) Surface Temperature measurements (Skin Type) can be provided on request. |
Mercury filled system based on mercury expansion principle is used for measuring temperature ranging from (-) 40C to 650C. It has faster response and the same is available in rigid stem as well as capillary type for remote sensing. Every angle type can be offered in all SS construction. Manufactured in accordance with BS:5235.
System is case compensated as standard (SAMA Cl VB). Fully compensated (capillary compensation), Double Bourdon system is also offered wherever essential.
FeaturesRugged constructionRigid stem or capillary typeFast responseProtection class IP- 67Accuracy 1% FSDHigh repeatability, low hysteresisCase compensated systemMicrometer Pointer for Reset
| Reference standard: | BS 5235, EN 13190 |
| System | Mercury filled, case compensated in accordance with SAMA CI. V B |
| Dial | 63mm,100mm,125mm,150mm in aluminium white background, black markings |
| Case | Die cast aluminum with screwed bezel in SS304 / SS316 with bayonet bezel as standard |
| Protection | Weather proof to IP - 67 (IS/IEC 60529:2001) |
| Window | Shatterproof / Toughened glass / Acrylic |
| Pointer | Aluminium, black |
| Stem | SS304 or SS316 in 6mm, 8mm,10mm,12mm, 14mm,1/4”, 3/8”,1/2”, 5/8” dia (immersion length as small as 30mm possible) |
| Capillary | SS Solid drawn |
| Capillary Covering | SS covered / SS covered + PVC / SS armoured / SS covered+SS armoured+PVC / (upto 5 Mtrs) |
| Connection | ½" NPT (M) as standard in SS304 or SS316 adjustable three piece compression fitting (Any other on request) |
| Range | (-) 30°C to 250°C with a minimum span of 50°C (0-600°C-optional) |
| Accuracy | ±1% FSD |
| Over range | 125% FSD as standard |
| Zero reset | Micrometer Pointer |
| Optional | The following can be provided on request 1) Silicon filled for SS304 / SS316 case (Maximum Range: 0 to 400°C on account of Silicon Limitation of Temperature) 2) Pointer Stopper for Over range and Under range 2) Color Band Dials 3) Dual Scale Dials 4) 130% Over range 5) Spring loaded Glands and Nipple Union Nipple ssemblies (Skin Type) can be provided on requests |
Liquid filled system based on liquid (other than mercury) expansion principle is used for measuring temperature ranging from (-) 30C to 250C.
It has faster response and the same is available in rigid stem as well as capillary type for remote sensing. Every angle type can be offered in all SS construction. Generally used where mercury type thermometer is not used in industries such as Food, Pharmaceutical, etc. The main advantage is its minimum immersion length required for sensing (as low as 30mm suffices for proper sensing thereby making it ideal for installing in lower line sizes)
FeaturesRugged constructionRigid stem or capillary typeSuitable for pharmaceutical, food, biotechnology industry.Protection class IP-67Accuracy 1% FSDMinimum immersion length (as low as 30mm suitable for lower line sizes) possible. Case compensated system (SAMA Cl. IB)
| System | Liquid filled, case compensated in accordance with SAMA CI. I B |
| Dial | 100mm or 150mm in aluminium, white background, black markings |
| Case | Die cast aluminum with screwed bezel, SS304 / SS316 with bayonet bezel |
| Protection | Weatherproof to IP - 67 (IS/IEC 60529:2001) Window : Shatterproof / Toughened glass / Acrylic for Switches |
| Pointer | Aluminium, black |
| Stem | SS304 or SS316 in 6mm,8 mm,10mm,12mm, 14mm,1/4”, 3/8”,1/2”, 5/8” dia and length from 100mm to 1200 mm as standard |
| Connection | ½" NPT (M) as standard in SS304 or SS316 adjustable three piece compression fitting (Any other on request) |
| Range | (-) 50°C to 500°C with a minimum span of 80°C (0-600°C-optional) |
| Accuracy | ±1% FSD (±2% FSD for 63mm dial size) (In accordance with EN 13190) |
| Over range | 125% FSD (110% for 500°C) |
| Reset | External |
| Contact | Single SPST, normally open, closed on rise in temperature (specify action required) adjustable over the entire range, rating 30 VA @ 230 V AC (100mm dial back entry model in SS case only ) |
| Optional | The following can be provided on request 1) Silicon filled for Dampening the Vibrations (Maximum Range:0 to 400°C on account of Limitation of Silicon due to Temperature) 2) Color Band Dials 3) Dual Scale Dials 4)130% Over range 5) Pointer Stopper for Over range and Under range 6) Range of 0 to 600°C 7) Accuracy (±0.5% FSD) 8) Spring loaded Glands and Nipple Union Nipple assemblies measurements (Skin Type) can be provided on request |
Instruments Industries Pvt . Ltd (Instruments Industries Pvt . Ltd)
710, Shakuntla Apartments, 59, Nehru Place, New Delhi 110 019, India
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