• Rp.16,000,000

  • Availability:3-4 Weeks
  • Brand: Murphy
  • Product Code: 10701159


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.

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)

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