PRODUCTOS
ACERCA DE
Indicador de temperatura
Introducción
Temperature gauges offer vital real-time measurement for industrial process control, ensuring mechanical device reliance without external power supply. Tempsens develops precision-engineered bimetallic thermometers and gas/liquid expansion thermometers for the petrochemical, food processing, pharmaceutical, and heavy manufacturing sectors. Complying with EN13190, IS13211, and ASME B40.3, they guarantee Class 1 accuracy on all ranges from -40°C to 600°C. Available in 63mm, 100mm, and 150mm dial sizes with SS304 cases and SS316 wetted parts, the company manufactures temperature gauges with stainless steel construction and IP65 ingress protection for demanding applications where sanitary connections, high ambient temperatures, and corrosive atmospheres are required.
About Temperature Gauge
Características principales
- Wide Temperature Ranges: The measurement range is -40°C to 400°C for bimetal thermometers, and -40°C to 600°C for gas/liquid expansion thermometers.
- Class 1 Accuracy: Accuracy limits reclined to ±1°C to ±10°C per EN13190, depending on nominal range and scale spacing.
- Stainless Steel Construction: 304 stainless steel cases with a bayonet bezel; SS316 is used for stems and capillary tubes, scaled for corrosive media applications.
- Multiple Dial Sizes: Offered in 63mm, 100mm, or 150mm nominal diameter and optimized for visibility for control panels and outdoor applications.
- Multiple Mounting Styles: Single lower, back, and every-angle mounting with adjustable or fixed process connections.
- IP65/IP68 Rating: Sealed construction available with glycerin or silicon oil for heavy vibration installations.
- Custom Stem Lengths: Stems are available in lengths from 65mm to 1000mm and hex sizes for 6mm, 8mm, 10mm, and 12mm for outer diameter custom immersions.
- Over Range Protectors: 120% full scale deflection capability which prevents permanent damage during temperature excursions.
- Dual Scale Versions: Simultaneously °C/°F graduation with external zero calibration adjustment option built in for field calibrating.
Working Principle of Temperature Gauges
The temperature gauge working principle is based on a mechanical thermal expansion principle without any help from an external power source. Commonly used bimetallic thermometers consist of two metal strips bonded together exhibiting different coefficients of thermal expansion wound into a helical coil. Changes in temperature prompt differing expansions between the two strips, unwinding or tightening the helix as a proportional reaction to temperature, moving a pointer near an easily read calibrated dial with minimum hysteresis.
Gas expansion thermometers depend on a change in the pressure of a sealed inert gas bulb, connected to a helical Bourdon tube. The increase in temperature also increases the pressure of the gas, as set forth by Gay-Lussac’s Law, resulting in Bourdon tube deflection driving pointer movement by a precision gearing system. SS316 capillary tubing is available for remote installations and can transmit pressure signals up to 20 meters from the sensing bulb to the indicator head and linear scale can be accurately maintained for difficult to access installations.
Explore our comprehensive guide on temperature gauge
Aplicaciones de los medidores de temperatura
- Petrochemical Processing: Monitoring distillation columns, confirming temperatures on reactors, and measuring pipelines in refineries in the -40°C to 600°C range.
- Steam & Boiler Systems: Controlling super heater outlet temperatures, tracking feed water temperatures, and monitoring condensate returns to meet ASME boiler codes.
- Food and Beverage Manufacturing: Confirming pasteurization temperatures, monitoring fermentation processes, or verifying CIP/SIP procedures with sanitary tri-clamp connections made from FDA approved materials.
- HVAC and Building Systems: Monitoring chilled water circuits, hot water distribution systems or air handling unit surface or wall mounted.
- Pharmaceutical Production: Validating autoclave temperate, monitoring sterile processes, or controlling clean room environments while having the capability of external zero adjustment.
- Power Generation: Monitoring turbine bearing temperatures, controlling generator cooling systems, or monitoring with other ancillary equipment in thermal and nuclear power generation.
- Wine & Brewing Industries: Controlling mash temperatures, monitoring fermentation vessels, or recording barrel storage conditions that need to measure from 0-100°C.
- Wood & Gas Fire Equipment: Measuring combustion chamber temperatures, monitoring flue gases, or verifying heat exchanger performance in biomass and natural gas.
Why Choose Tempsens?
- 35 years of manufacturing precision instrumentation with full-service design, fabrication, testing, and calibration capability.
- Global certification portfolio to include ISO 9001:2015compliance, and IBR certification for regulated applications.
PREGUNTAS FRECUENTES
Preguntas frecuentes
Find answers to frequently asked questions related to Temperature Gauge.
A temperature gauge provides the reading in Celsius (°C), Fahrenheit (°F), or Kelvin (K) scales, including dual scale options when the application requires an absolute display °C/°F on a single dial.
Considerations include process temperature range, ambient temperature, required stem immersion, mounting orientation (bottom/back/every angle), type of process connection threads (BSP/NPT), accuracy class, and whether sanitary, explosion-proof, or thermo-well protection is required depending on the installation.
Bimetallic thermometers have standard ranges of -40°C to 600°C with an accuracy of Class 1; gas or liquid expansion thermometers have capabilities beyond up to 600°C (following the choice of the nominal ranges based on process operating temperatures, required scale resolution (i.e., 1°C to 10°C separation), and the measuring range versus nominal span placing as prescribed by EN13190).
Periodic visual inspection, such as examining the clarity of the dial and pointer movement, checking for stem integrity, checking for thermo-well condition (when installed), checking for the process connection to be tight, and checking in the zero-point all provide reliable in-service for a longer period; glycerin-filled gauges need inspection for fluid loss indicating the seal is beginning to lose its integrity.
