Thermometer
Mercury-in-Steel Thermometer
| Types | Rigid Stem & Capillary type |
| Dial Size | 100 mm & 150 mm White dial & Black numerals |
| Accuracy | ±1% of Range Span |
| Case Material | Die-cast Aluminum weather proof / SS 304 |
| Stem & Bulb Material | MS / SS 304 / SS 316 |
| Stem Dia | 8 mm |
| Bulb Dia | 10 mm, 12 mm, 16 mm |
| Stem Length | Adjustable up to 300 mm |
| Capillary | Copper / Stainless Steel, 3 meters Standard |
| Connection | 1/2", 3/4" BSP / Npt (M) |
| Mounting | Direct mounting with bottom entry, Flush Panel mounting back entry |
| Ranges | -38 to +50, -50 to +50, 0 to 50, 100, 120, 150, 200, 250, 300, 400, 600oC |
| Accessories | Flanged Type and Bar Stock Thermowell |
Bi Metal Thermometer
| Dial Size | 100 mm & 150 mm White dial & Black numerals |
| Case Material | S.S. 304 Plain / SS 304 Bayonet Bezel |
| Accuracy | ±/-1% of Range Span |
| Stem Material | SS 304 / SS 316 |
| Stem Dia | 9 mm |
| Connection | 1/2", BSP / Npt |
| Immersion Length | Adjustable up to 300 mm |
| Mounting | Direct mounting with bottom entry Direct mounting back entry |
| Ranges | -38 to +50, -50 to +50, 0 to 50, 100, 120, 150, 200, 250, 300, 400, 600oC |
Thermowell
Thermowells are tubular fittings used to protect temperature sensors installed in industrial processes. A thermowell consists of a tube closed at one end and mounted in the process stream. A temperature sensor such as a thermometer, thermocouple or resistance temperature detector is inserted in the open end of the tube, which is usually in the open air outside the process piping or vessel and any thermal insulation. The process fluid transfers heat to the thermowell wall, which in turn transfers heat to the sensor. Since more mass is present, the sensor's response to process temperature changes is delayed. If the sensor fails, it can be easily replaced without draining the vessel or piping. To be representative of the average temperature of fluid, the thermowell must extend a few per cent of the inside diameter of the process pipe or vessel.
