Table of Contents
What is a Temperature Gauge?
- It is a field-mounted temperature sensor.
- It measures the present temperature of the body.
- The temperature gauge is a dial-type temperature-indicating device.
- The gauge is used only for display purposes, but this is not used to control the temperature of the body.
- Temperature gauges are available in various dial sizes, various ranges, and in different scales such as Degrees-Celsius and Degrees Fahrenheit scales.
- Most of the process industries use gauges having a Degree Celsius scale.
Various types of gauges used in industries
Bimetal Dial Thermometer Temperature Gauge
Features:
- The bimetal Dial thermometer consists of a bimetal strip in the form of a helix
- It works on the principle of thermal expansion: when two metals with different coefficients of expansions are joined to form a bimetal. The expansion of bimetal is proportional to changes in temperature.
- Bimetal dial thermometers are simple in construction.
- Rugged construction with Protection class IP-67
- Suitable for most industrial process applications
- The temperature range varies from – 50 to 600 Degrees Celsius.
- It has a rigid stem with a fast Response is fast.
- Hermetically sealed case.
- It is available with bottom entry, back entry, and every angle rotatable construction.
- Accuracy ± 1%Full Scale Deflection.
- Repeatability is high and has minimum hysteresis.
Specifications:
| Reference Standard | ASMEB 40.200, EN 13190 |
| Dial | 100 mm or 150 mm aluminium white background with black markings. |
| Case | Stainless Steel-304 or 316 with bayonet bezel. |
| Protection | Weatherproof IP – 67 class (IS/IEC : 60947 / IEC : 60529) |
| Window | Shatter proof glass |
| Pointer | Aluminium, black, micrometre adjustable |
| Stem | SS304 or SS316 in 6 mm, 8 mm, 10 mm, and 12 mm diameter, and length varies from 100 mm to 1000 mm. |
| Connection | Standard Half-inch NPT connection |
| Range | 50Degree C to 600 Degree C with a minimum span of 60 Degree C. |
| Accuracy | ± 1% Full Scale Deflection |
| Over range | 125% Full Scale Deflection up to max temperature range of 500°C |
| Reset | Micrometer Pointer (standard), External (optional) |
| Optional | 1) Silicon Oil Filled Case Suitable up to 339°C Max 2) Contacts: 1 SPST, N-O to close on the rise of drop in temperature (specify action required) adjustablefor full range, with a current rating of 30 VA @ 230 V AC, only for 100 mm dial, back entry. |
Ordering Information MODEL: BDT
| MOUNTING | V Bottom Entry, Local Mounting C Back Entry, Local Mounting E Every Angle, Local Mounting | ||||
| DIAL | 10 -100 mm 15 -150 mm | ||||
| CASE | S4 SS304 S6 SS316 | ||||
| STEM Outer Diameter | A 6 mm B 8 mm C 10 mm D 12 mm | ||||
| STEM LENGTH | Specify in mm | ||||
| STEM MATERIAL | S4-SS304 S6-SS316 | ||||
| CONNECTION | |||||
| SIZE | TYPE | MALE/FEMALE | METRIC THREADS | ||
| 6 | ¼ inch | NT | NPT | M Male | 18 M – M 18 * 1.5 |
| 10 | 3/8 inch | BP | BSP | F Female | 20 M – M 20 * 1.5 |
| 15 | ½inch | BT | BSPT | 24 M – M 24 * 1.5 | |
| 20 | ¾ inch | PF | PF | XX- Any other | |
| 25 | 1 inch | GS | Gas | ||
| NS | NPS | ||||
| RANGE | 0 to 600 | ||||
| UNIT | Degree Celsius, Degree Fahrenheit | ||||
| OPTION | A | Thermo well | |||
| C | Colour Band | ||||
| D | Dual Scale | ||||
| E | 1 SPST Electrical contact | ||||
| S | Silicon Oil Filled Case * | ||||
| * Silicon Oil Filled Case shall be applicable up to the maximum temperature of 339°C only | ** Ranges mentioned are in °C. An equivalent unit in °F can be provided on request | ||||
Gas Filled Dial Thermometer Temperature Gauge
Features:
- Gas-filled dial thermometer temperature gauges defeat the limitations of other temperature gauges
- It operates over a wide temperature range of about – 200 to 800 Degrees Celsius
- The stem is offered without accuracy loss.
- The capillary length of this dial-type gauge is up to 25m
- Inert (N2) gas is nonhazardous, and the nontoxic nature of the filled systems makes it an ideal choice for a cross-section of industries.
- Suitable for sanitary application
- All SS construction
- Rigid stem or capillary type
- Fast response
- High reliability and accuracy ± 1% FSD
- IP-67 protection
Specifications:
| Reference Standard | ASMEB 40.200, EN 13190 |
| System | Nitrogen Gas filled compensated in accordance with SAMA CI. Ill B |
| Dial | 100 mm or 150 mm aluminium white background with black markings. |
| Case | Stainless Steel-304 or 316 with bayonet bezel. |
| Protection | Weatherproof IP – 67 class (IS/IEC : 60947 / IEC : 60529) |
| Window | Shatter proof glass |
| Pointer | Aluminium, black, micrometre adjustable |
| Stem | Stainless Steel- 304 or 316 in 6 mm, 8 mm, 10 mm, and 12 mm diameter as standard Connection |
| Connection | 11/2 inch NPT adjustable. |
| Range | (-) 200°C to 800°C with a minimum span of 80°C |
| Accuracy | ± 1% FSD |
| Over range | 125% Full Scale Deflection up to max temperature range of 500°C |
| Reset | Micrometer Pointer (standard) |
| Optional | Silicon Oil Filled Case Suitable for about 339°C |
Ordering Information: GDT-R / GDT-C
GDT-R – Rigid Stem
GDT-C – Capillary Type
| MOUNTING | V Bottom Entry, Local Mounting C Back Entry, Local Mounting E Every Angle, Local Mounting S Bottom Entry, Surface Mounting P Back Entry, Panel Mounting Y Bottom Entry, 2″ Pipe Mounting | ||||
| DIAL | 10 -100 mm 15 -150 mm | ||||
| CASE | S4 SS304 S6 SS316 | ||||
| STEM Outer Diameter | A 6 mm B 8 mm C 10 mm D 12 mm | ||||
| STEM LENGTH | Specify in mm | ||||
| STEM MATERIAL | SO – SS310 S4-SS304 S6-SS316 16 – Inconel 600 | ||||
| Capillary | Type | Length | |||
| SC SS Covered SP SS Covered + PVC SA SS Covered + SS Armoured SAP SS Covered + SS Armoured + PVC N Not Applicable for GDT-R type. | In meter | ||||
| CONNECTION | |||||
| SIZE | TYPE | MALE/FEMALE | METRIC THREADS | ||
| 6 | ¼ inch | NT | NPT | M Male | 18 M – M 18 * 1.5 |
| 10 | 3/8 inch | BP | BSP | F Female | 20 M – M 20 * 1.5 |
| 15 | ½inch | BT | BSPT | 24 M – M 24 * 1.5 | |
| 20 | ¾ inch | PF | PF | XX- Any other | |
| 25 | 1 inch | GS | Gas | ||
| NS | NPS | ||||
| RANGE | 0 to 800 | ||||
| UNIT | Degree Celsius, Degree Fahrenheit | ||||
| OPTION | A | Thermo well | |||
| C | Colour Band | ||||
| D | Dual Scale | ||||
| E | 1 SPST Electrical contact | ||||
| S | Silicon Oil Filled Case * | ||||
| ** Ranges mentioned are in °C. An equivalent unit in °F can be provided on request | |||||
Liquid-Filled Dial Thermometer Temperature Gauge
Features:
- Temperature measurement is based on the principle of liquid-filled expansion
- Temperature range (-) 30°C to 250°C
- Replaces mercury-type thermometers.
- Used in various industries such as food processing, pharmaceutical, and biotechnology.
- The main advantage is the minimum immersion length required for sensing (30mm) which makes it suitable for lower line sizes
- Rugged construction.
- Accuracy ± 1% FSD
Specifications:
| Reference Standard | ASMEB 40.200, EN 13190 |
| System | Liquid-filled type compensated in accordance with SAMA CI. I-B |
| Dial | 100 mm or 150 mm aluminium white background with black markings. |
| Case | Stainless Steel-304 or 316 with bayonet bezel. |
| Protection | Weatherproof IP – 67 class (IS/IEC : 60947 / IEC : 60529) |
| Window | Shatter proof glass |
| Pointer | Aluminium, black, micrometre adjustable |
| Stem | Stainless Steel- 304 or 316 in 6 mm, 8 mm, 10 mm, and 12 mm diameter as standard material. (possible immersion length must be about 30 mm) |
| Capillary | SS Covered/SS Covered + PVC/SS Covered + SS armored/SS Covered + SS Armoured +PVC (up to 5 Mtr.). |
| Connection | 1/2 inch NPTas standard with adjustable compression fitting. |
| Range | (-) 30°C to 500°C with a minimum span of 50°C |
| Accuracy | ± 1% FSD |
| Over range | 125% FSD (up to max temp range of 500°C ) |
| Reset | Micrometer Pointer |
| Optional | Silicon Oil Filled Case |
Ordering Information LDT-R / LDT-C:
LDT-R – Rigid Stem
LDT-C – Capillary Type
| MOUNTING | V Bottom Entry, Local Mounting C Back Entry, Local Mounting E Every Angle, Local Mounting S Bottom Entry, Surface Mounting P Back Entry, Panel Mounting Y Bottom Entry, 2″ Pipe Mounting | ||||
| DIAL | 10 -100 mm 15 -150 mm | ||||
| CASE | S4 SS304 S6 SS316 | ||||
| STEM Outer Diameter | A 6 mm B 8 mm C 10 mm D 12 mm | ||||
| STEM LENGTH | Specify in mm | ||||
| STEM MATERIAL | SO – SS310 S4-SS304 S6-SS316 16 – Inconel 600 | ||||
| Capillary | Type | Length | |||
| SC SS Covered SP SS Covered + PVC SA SS Covered + SS Armoured SAP SS Covered + SS Armoured + PVC N Not Applicable for LDT-R type. | In meter, up to 5 Mtr max | ||||
| CONNECTION | |||||
| SIZE | TYPE | MALE/FEMALE | METRIC THREADS | ||
| 6 | ¼ inch | NT | NPT | M Male | 18 M – M 18 * 1.5 |
| 10 | 3/8 inch | BP | BSP | F Female | 20 M – M 20 * 1.5 |
| 15 | ½inch | BT | BSPT | 24 M – M 24 * 1.5 | |
| 20 | ¾ inch | PF | PF | XX- Any other | |
| 25 | 1 inch | GS | Gas | ||
| NS | NPS | ||||
| RANGE** | 0 to 250 | ||||
| UNIT | Degree Celsius, Degree Fahrenheit | ||||
| OPTION | A | Thermo well | |||
| C | Colour Band | ||||
| D | Dual Scale | ||||
| E | 1 SPST Electrical contact | ||||
| S | Silicon Oil Filled Case * | ||||
| ** Ranges mentioned are in °C. An equivalent unit in °F can be provided on request | |||||
Indicating Temperature Switch
Features:
- Combines indication with switching in order to make or break the associated electrical circuit
- Can be offered with contact assembly as well as micro switch (as a combination of switch and movement)
- Fast response
- Switching accuracy ± 2% FSD
- High repeatability and low hysteresis
- Flameproof version available
- Case compensated system
Specifications:
| Reference | Nitrogen gas filled type compensated in accordance with SAMA CI. III-B |
| Dial | 100 mm or 150 mm aluminium white background with black markings. |
| Case | Stainless Steel-304 or 316 with bayonet bezel. |
| Protection | Waterproof to IP – 67 (IS/IEC: 60947 / IEC: 60529) Flameproof to IIA MB (Equivalent to NEC CI. I Div 2 Gr. C&D) Flameproof to IIC (Equivalent to NEC CI. Div 1 Gr. A&B) |
| Stem | Stainless Steel-304/316 in 6 mm, 8 mm, 10 mm, 12 mm diameter as standard material. |
| Capillary | SS Covered/SS Covered + PVC/SS Covered + SS armoured/SS Covered + SS Armoured +PVC (up to 25 Mtr.). |
| Connection | ½ inch NPT compression fitting as the standard connection. |
| Range | (-) 200°C to 800°C with a minimum span of 80°C |
| Accuracy | ± 1% FSD for indication, ± 2% FSD for switching. |
| Over range | 125% FSD |
| Contacts | 1) SPST, single, normally open, closes on rising in temperature or vice versa, rated 30 VA @ 230V AC |
| Accessory | Relay for the contact assembly to match the current of 5 amp @ 230 V AC separate mounted. |
| Note | a. Flameproof version is offered with Single Pole Double Throughput Micro switch in Die-Cast only in Aluminium housing. b. For minimum insertion length essential for propersensing, contact our design department. c. Three-point calibration certificate accompanies each thermometer. d. For operating temp>600°C; the stem of SS310 / Inconel 600 shall be recommended. |
Ordering Information MODEL : GDT-SW-R / GDT-SW-C
GDT-SW-R – Rigid Stem
GDT-SW-C – Capillary Type
| MOUNTING | V Bottom Entry, Local Mounting C Back Entry, Local Mounting E Every Angle, Local Mounting S Bottom Entry, Surface Mounting P Back Entry, Panel Mounting Y Bottom Entry, 2″ Pipe Mounting | ||||
| DIAL | 10 -100 mm 15 -150 mm | ||||
| CASE | S4 SS304 S6 SS316 | ||||
| STEM Outer Diameter | A 6 mm B 8 mm C 10 mm D 12 mm | ||||
| STEM LENGTH | Specify in mm | ||||
| STEM MATERIAL | SO – SS310 S4-SS304 S6-SS316 16 – Inconel 600 | ||||
| Capillary | Type | Length | |||
| SC SS Covered SP SS Covered + PVC SA SS Covered + SS Armoured SAP SS Covered + SS Armoured + PVC N Not Applicable for GDT-SW-R type. | In meter, up to 5 Mtr max | ||||
| CONNECTION | |||||
| SIZE | TYPE | MALE/FEMALE | METRIC THREADS | ||
| 6 | ¼ inch | NT | NPT | M Male | 18 M – M 18 * 1.5 |
| 10 | 3/8 inch | BP | BSP | F Female | 20 M – M 20 * 1.5 |
| 15 | ½inch | BT | BSPT | 24 M – M 24 * 1.5 | |
| 20 | ¾ inch | PF | PF | XX- Any other | |
| 25 | 1 inch | GS | Gas | ||
| NS | NPS | ||||
| RANGE** | 0 to 850 | ||||
| UNIT | Degree Celsius, Degree Fahrenheit | ||||
| OPTION | A | Thermo well | |||
| C | Colour Band | ||||
| D | Dual Scale | ||||
| E | 1 SPST | ||||
| F | 2 SPST | ||||
| G | 1 SPDT | ||||
| H | 2 SPDT | ||||
| R | Relay | ||||
| FA | Flame Proof Case (IIA, IIB) | ||||
| FC | Flame Proof Case (IIC) | ||||
| * Die Cast with Aluminium casing is available only for the Flameproof Version.. | ** Ranges mentioned are in °C. An Equivalent unit in °F scale is issued on request | ||||
Digital Display Thermometer / Indicator
The Digital / Wireless Thermometer range is replaced by digital temperature gauges. These digital gauges are contemporary more superior in technology.
Features:
- Universal RTD or Thermocouple input.
- BATTERY Powered.
- USB & NFC Interface for easy data transfer.
- Alarm or Relay configured to indicate lower battery status .
- User set display messaging.
- 5000 Point data logging along with Real-time clock.
- This is not only a temperature-displaying unit.
- It functions as a data logger to download the information by using an android application.
- It displays information such as over temperature and low battery.
DM-650TMSCH4: Digital Display with IP67 Plastic Housing:
- This consists of a battery-powered indicator 6-digit LCD to display sensor temperature in Degrees Celsius and in Degrees Fahrenheit scale.
- It allows the user to display up to two messages of up to 32 characters.
- the user has the option to set an alarm within a temperature range.
- The translation relay is used together with messaging and alerts to provide switching at user-set switch points.
- Data logger to store up to 5000 points.
- Feature highlights include relay trips, data logging functions, and battery-powered and real-time clocks.
DM-650 TMSS: Digital Display with Stainless Steel Housing:
- It consists of stainless steel housing, best suited for rough climatic conditions. It also includes a DUAL relay. The two transition relay is used together with messaging and alerts to provide switching at user-set switch points.
- Feature highlights include dual relays, a data logging function, battery-powered, real-time clock (great for stamping data logged points).
DM-650TMSSF: Digital Display with Stainless Steel body and panel for Wall Mounting:
This indicator features all of the above functions. The addition is a Stainless Steel mounting panel that can be used for an application requiring the indicator to be fixed on a wall or panel.
