• Easy to read dial
• Bi-metallic sensor
• Two ranges:
  • 100 to 500°F (40 to 260°C)
  • 200 to 1000°F (100 to 500°C)
• Dials scaled in degrees fahrenheit celsius
• CSA listed explosion-proof model available

OVERVIEW:

The SDB Series are direct-mounting temperature Swichgage devices. They provide an accurate direct-reading gage with an adjustable limit switch to activate alarms and/or shutdown. A knob on front of the Swichgage instrument allows you to adjust the limit switch trip point. Pointer movement is actuated by a bi-metallic sensing element.

Models SDB500, SDB501 and SDB500EX have a temperature range of 100° to 500°F (40° to 260°C). SDB500EX enclosure is explosion-proof and CSA listed for Class I, Group C and D hazardous locations.

The SDB1000 has a temperature range of 200° to 1000°F (100° to 500°C).

The most common use of the SDB Series is to monitor gas compressor temperatures. Engine exhaust temperature can also be monitored to indicate overloading or lean fuel mixtures, or use the SDB to help coordinate loads on twin-engine installations.

SPECIFICATIONS:

• Temperature Ranges:
  • SDB500, SDB500EX and SDB501: 100° to 500°F (40° to 260°C)
  • SDB1000: 200° to 1000°F (100° to 500°C)
• Sensing Bulb Material and Size: 304 stainless steel; 1/2 in. dia. x 4 in. insertion depth (13 x 102 mm)
• Maximum Bulb Pressure: 285 psi (1.97 MPa) [19.7 bar] at 625°F (329°C) NOTE: Use of a thermowell is recommended.
• Process Connection: 1/2 NPTF; 3/4 NPT adapter available
• Sensing Element: High torque bi-metal element in heliarc welded stainless steel bulb
• Contact Rating:
  • SDB500, SDB501 and SDB1000: 2 A @ 30 VAC
  • SDB500EX: 2 A @ 120 VAC
• Limit Contact Adjustment: By knob through full range
• Maximum Unit Temperature:
  • SDB500, SDB500EX, SDB501: 625°F (329°C)
  • SDB1000: 1250°F (677°C)
• Case Material:
  • SDB501: Die-cast aluminum
  • SDB500, SDB1000, SDB500EX: Sand-cast aluminum
• Swichgage Accuracy: ± 3% of full scale; NOTE: All models are calibrated for use with a thermowell. Specify when a thermowell is NOT to be used when ordering.
• Wire: 18 AWG (1.0 mm2). See Dimensions for lengths.
• Dial: Black print on stainless steel. Dials are scaled in degrees Fahrenheit and Celsius.
• Approximate Shipping Weight:
  • SDB501: 1 lb. 4 oz. (0.57 kg)
  • SDB500 and SDB1000: 2 lb. (1.0 kg)
  • SDB500EX: 2 lb. 5 oz. (1.05 kg)
• Approximate Shipping Dimensions:
  • SDB501: 8-1/4 x 4-1/4 x 4-1/2 in. (210 x 108 x 114 mm)
  • SDB500 and SDB1000: 8-1/4 x 4-1/4 x 4-1/2 in. (210 x 108 x114 mm)
  • SDB500EX: 9 x 5-1/2 x 6 in. (229 x 140 x 152 mm)