Temperature Gauges
Mechanical Temperature
Bimetal
Thermometers
 Bimetal Operating Principle: The temperature is measured with a bimetal system inside the thermometer stem. The bimetal system consists of two metal strips bonded together that have different expansion coefficients. Therefore, one strip will expand faster than the other causing the bimetal strip to curl in proportion to its temperature. The bimetal system is helically wound and heat treated for long term stability. Temperature variations cause the bimetal strip to unwind or wind tighter, which in turn rotates the pointer.
Process Grade Thermometers
- Types TI.30, TI.31, TI.32
- External reset
- 3”, 5” dial sizes
- 304 stainless steel case and stem
- 2½” to 72” stem lengths (call for lengths over 72")
- Back, bottom and adjustable angle connections are available
- ½” NPT connection on 3” and 5” dials (std.)
- Hermetically sealed per ASME B40.3
- Flat instrument glass window
- White aluminum and anti-parallax dials
- Black aluminum pointer
- ±1.0% of span accuracy
(ASME B40.3 Grade A)
- Single °F or °C or dual scales
- Ranges -100°F(-70°C) to 1,000°F(500°C)
Industrial Grade Thermometers
- OEM Type TI.20
- Type TI.33
- Non-Resettable
- 2", 3" or 5" dial sizes
- 304 stainless steel case and stem
- Stem lengths 2-1/2" to 72"
- Back, bottom and adjustable angle connections available
- 1/4" NPT on 2" dials, 1/2" NPT on 3" and 5" dials standard; others available
- Hermetically sealed per ASME B40.3
- Flat instrument glass window
- White aluminum and anti-parallax dials
- Black aluminum pointer
- ±1.0% of span accuracy
(ASME B40.3 Grade A)
- Single °F or °C or dual scales
- Ranges -100°F(-70°C) to 1000°F(500°C)
Pocket Test Thermometers
- Type TI.1005
- Small Utility
- Pocket Test Bimetal Thermometer
- +1% of full scale accuracy
- Stainless Steel case
- .142” diameter, 5” stem
- Range -40/160°F; 0/220°F; 50/550°F
- Aluminum pointer with matte red finish
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