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100 Series Industrial Type Bimetal Thermometers

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  • Heavy-duty, industrial thermometer featuring a weather-resistant, tamper-proof case
  • Single °F, single °C, and dual scale options available
  • Accuracy: ±1% full scale, Grade A, ASME B40.3
  • ± 1-3/4", 2", 3" and 5" sizes - center back connection only
  • 304 Stainless Steel case and bezel
  • Standard stem lengths 2-1/2" through 42"
  • Highly sensitive bimetallic helix coil is heat-treated for stress relief, and silicone-coated to minimize pointer vibration and maximize heat transfer and response time
  • 360° groove around stem is a visual reference to show mimum immersion point
  • Made in the U.S.A.

Note: Thermowells are recommended for pressure, corrosive fluids and high velocity applications.

If you are viewing on a smaller screen or with screen zoom, please use the horizontal scroll bar at the bottom of this table to see all information.

DIAL SIZE 18 1-3/4"†† 30 3"    
20 2" 50 5"    
CASE TYPE 110 Back connection        
STEM LENGTHS 025 2-1/2" 090 9" 240 24"
040 4" 120 12" 300 30"
060 6" 150 15" 360 36"
080 8" 180 18" 420 42"
TEMPERATURE RANGES
Dual Scale °F/ °C
-100/100 F/C -100 °F/°C to 100 °F/°C 0/25 F/C 0° °F/°C to 250 °F/°C 50/500 F/C 50° to 500 °F/°C
-40/160 F/C -40 °F/°C to 160 °F/°C 20/240 F/C 20 °F/°C to 240 °F/°C 150/750 F/C 150 °F/°C to 750 °F/°C
0/140 F/C 0 °F/°C to 140 °F/°C 25/125 F/C 25°F/°C to 125 °F/°C 200/1000 F/C 20°F/°C to 1,000 °F/°C*
0/180 F/C 0 °F/°C to 180 °F/°C 50/300 F/C 50 °F/°C to 300 °F/°C    
0/220 F/C 0 °F/°C to 220 °F/°C 50/400 F/C 50 °F/°C to 400 °F/°C    
Single Scale °F -100/100 F -100 °F to 100 °F 0/250 F 0° to 250 °F 50/400 F 50° to 400 °F
-50/120 F -50 °F to 120 °F 0/300 F 0 °F to 300 °F 50/500 F 50 °F to 500 °F
-40/160 F -40 °F to 160 °F 0/500 F 0 °F to 500 °F 50/550 F 50 °F to 550 °F
0/140 F 0 °F to 140 °F 20/240 F 20 °F to 240 °F 100/800 F 100 °F to 800 °F**
0/180 F 0 °F to 180 °F 25/125 F 25 °F to 125 °F 150/750 F 150 °F to 750 °F
0/200 F 0 °F to 200 °F 50/250 F 50 °F to 250 °F 200/1000 F 200 °F to 1,000 °F*
0/220 F 0 °F to 220 °F 50/300 F 50 °F to 300 °F    
Single Scale °C -75/175 C -75 °C to 175 °C 0/50 C 0 °C to 50 °C 0/300 C 0 °C to 300 °C
-70/70 C -70 °C to 70 °C** 0/60 C 0 °C to 60 °C** 0/400 C 0 °C to 400 °C
-50/100 C -50 °C to 100 °C** 0/80 C 0 °C to 80 °C** 0/450 C 0 °C to 450 °C
-50/50 C -50 °C to 50 °C 0/100 C 0 °C to 100 °C 100/400 C 100 °C to 400 °C
-40/70 C -40 °C to 70 °C 0/150 C 0 °C to 150 °C 100/550 C 100 °C to 550 °C*
-20/120 C -20 °C to 120 °C** 0/200 C 0 °C to 200 °C    
-10/110 C -10°C to 110 °C** 0/250 C 0 °C to 250 °C    
  Consult factory for additional temperature ranges      
OPTIONS 1/8 1/8" NPT AU 1/2" NPT Adjustable Union** SL Silicone Filled ***
3/8 3/8" NPT HD Heavy-Duty Stem (0.375" dia.)** ST Stainless Steel Tagging
6 6 mm stem diameter** LL Polycarbonate Lens TG Tempered Glass Lens†††
8 8 mm stem diameter** PL Acrylic Lens    
316 316 SS Wetted Parts** SG Safety Glass Lens**    

If you are viewing on a smaller screen or with screen zoom, please use the horizontal scroll bar at the bottom of this table to see all information.

  MODELS SPECIFICATIONS
Case & Bezel All 100 Series 304 Stainless Steel; 316 Stainless Steel optional
Lens All 100 Series Instrument glass
Pointer All 100 Series Aluminum, black finished
Stem diameter 18-110
20-110, 30-110, 50-110
0.150" (3.81 mm)
0.250" (6.35 mm)
Accuracy All 100 Series ±1% full scale, Grade A, ASME B40.3
Dial All 100 Series Anodized Aluminum with large black numbers and graduations
Process connection 18-110
20-110
30-110, 50-110
1/4" NPT, 1/8" and 3/8" NPT optional
1/4" NPT
1/2" NPT
Wetted parts All 100 Series 304 Stainless Steel; 316 Stainless Steel optional
Hermetic seal All 100 Series Per ASME B40.3 dustproof and leakproof
Bimetal coil All 100 Series Silicone coated helix coil on ranges below 500 °F for vibration dampening, maximum heat transfer and response time
Over temperature limits All 100 Series Up to 250 °F 100%; 250 °F to 550 °F 50%; 500 °F to 1,000 °F continuous use up to
800 °F; intermitent use over 800 °F

Options & Accessories

  • 1/8" NPT, available for 18-110 model only
  • 3/8" NPT, available for 18-110 model only
  • 316 SS Wetted Parts, available for 30-110 and 50-110 models only
  • 6 mm stem diameter, available for 30-110 and 50-110 models only
  • 8 mm stem diameter, available for 30-110 and 50-110 models only
  • Acrylic Lens (PL) , should not be used where case temperature exceeds 300 F/150 °C
  • Certificate of Conformance
  • Heavy-Duty Stem (0.375" Dia.) (HD) available for 30-110 and 50-110 models only
  • Mounting Brackets – Consult Factory
  • Polycarbonate Lens (LL), should not be used where case temperature exceeds 300 °F/150 °C
  • Safety Glass Lens (SG) available for 30-110 and 50-110 models only
  • Stainless Steel Tagging (ST)
  • Tempered Glass Lens (TG)*

*Not available on 10-150 or 10-350 models, or with Silicone Fill (SL)

  • Can be used to reposition the dial face for better viewing
  • Also helpful when installing a thermometer where space is limited
  • Available for 20-110, 30-110 and 50-110 models only
  • Available only for ranges from -50 °F (-45 °C) to 500 °F (260 °C)
  • For applications where severe vibration may be a factor
  • Silicone dampens and lubricates the internal mechanism thus reducing pointer oscillation and premature wear
  • Maximum case temperature not to exceed 300 °F (150 °C)
  • Polycarbonate lens is standard with Silicone Fill
  • Various sizes and types of mounting flanges are available

WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

  • Special ranges and dials with company names, company logos, part numbers, telephone numbers, or almost any custom layout is available
  • Certified calibration provides the user with a serial numbered thermometer along with a calibration sheet against a primary temperature standard
  • Traceable to the National Institute of Standards and Technology
  • The 304 Series Stainless Steel stem is welded at the tip and case for hermetic seal
  • 1/4" (6.35 mm) diameter is standard for lengths up to 24" (609 mm)
  • 3/8" diameter, sharp tip options and optional 316SS wetted parts are also available

WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

Thermowells allow a temperature instrument to be removed and replaced without shutting down and draining the process, and reduce the possibility of damage to the temperature instrument.

View NOSHOK Thermowells


WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov