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Siemens 134 Pneumatic High and Low Temperature Detection Thermostats

Pneumatic High and Low Temperature Detection Thermostats
134

The 134 High and Low Temperature Detection Pneumatic Thermostats automatically “lockout” at setpoint and require manual reset.

• Snap-acting pneumatic switch
• Sight-set calibrated setpoint scale
• No leakage of air prior to reset of switch
• Easily adjustable settings
• Normally closed air valve; bleeds to less than 2 psi (14 kPa) when supplied through a restrictor
• Barb fitting for push-on connection of 1/4 (6 mm) OD polyethylene tubing
• Holds dead-ended line to approximately 22 psi (152 kPa) air pressure

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Cat #Temperature RangeDifferentialTempMax. Bulb Temp.Bulb & Capillary LengthSwitch Reclose
134-170015 to 55°F (-9 to +12.8°C) with stop at 35°F (1.67°C)5°F (2.8°C) Non- AdjustableLow400°F (204°C)20’ (6 m)Temperature must increase by 5°F (2.8°C) before pneumatic switch can be reclosed.
134-1710100 to 170°F (38 to 77°C)10°F (5.6°C) Non- AdjustableHigh250°F (121°C)2.7” (69 mm) Dia. x 10” (25.4 cm) L bulb with 6’ (183 mm) capillaryTemperature must drop 10°F (5.6°C) before pneumatic switch can be reclosed.
Part No. 134-1700
Ambient Temperature Range Greater than setpoint to 140°F (60°C)
Pneumatic Switch NC, 0.020" (0.6 mm) diameter bleed
Control Point Low
Temperature Thermostat Lowest temperature at any one foot section of the sensing bulb
Case Finish Gray Baked Enamel
Shipping Weight 2.45 lb. (1.11 kg)
Part No. 134-1710
Ambient Temperature Range -40 to +140°F
(-40 to +60°C)
Pneumatic Switch NC, 0.02" (0.6 mm) diameter bleed
Control Point Low
Temperature Thermostat Lowest temperature at any one foot section of the sensing bulb
Case Finish Gray Baked Enamel
Shipping Weight 2.38 lb. (1.08 kg)

The 134 Pneumatic High and Low Temperature DetectionThermostats are used on pneumatic heating and coolingsystems in areas protected from the weather.

On a typical high limit application, the thermostat shutsdown air conditioning or ventilating fans when the ducttemperature becomes excessively high. A normally closedswitch opens at setpoint.

On a typical low temperature application, the thermostatstops the fan or closes a damper when the temperaturedrops to the setpoint at any one foot (30.5 cm) or more ofthe sensing element.



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