HVAC Controls, Pneumatic • Thermostats and Humidistats
Limitem Remote Bulb Thermostats Model 357 D
Description
The 357 D Limitem Remote Bulb Thermostat is a pneumatically-operated thermostat that is gradual, direct acting with a remote or averaging bulb.
Features • Direct acting only
• Remote or averaging bulbs for flexibility in installation • Liquid-filled sensing element for rapid response to temperature changes
• Two-valve design reduces air waste • Adjustable sensitivity
item
357-0003 357-0004 357-0005 357-0001
temperature operating range
20 to 100°F (-6.7 to +37.8°C) Remote Bulb
sensing element capillary 8’ (2.4 m)
Bulb 3/8” x 4’ (0.95 mm x 10.2 cm)
5 to 145°F (1.7 to 62.8°C) Averaging Bulb 40’ (12.2 m) 3/32” x 15’ (0.24 mm x 457 cm) 120 to 230°F (48.9 to 110°C) Remote Bulb 40’ (12.2 m) 3/8” x 4” (0.95 mm x 10.2 cm) 35 to 145°F (1.7 to 62.8°C) Averaging Bulb 6” (15 cm) 3/32” x 8’ (0.24 mm x 244 cm)
Maximum ambient temp. 201°F (94°C)
210°F (99°C) 261°F (127°C) 211°F (99.4°C)
Model
Unit Mounted Thermostats 188
Description
The 188 Unit Mounted Thermostat is a gradual acting thermostat with a remote bulb operating on the forcebalance principle, using pneumatic feedback to obtain linearity and maintain selected room temperature by positioning pneumatic devices to control heating or cooling.
Features
• Liquid-filled thermal system temperature sensing element • Durable die-cast metal case with rugged setpoint knob • Adjustable sensitivity
• Universal mounting bracket for easy installation • Integral adjustable limit stops
item type
188-0031 Single Setpoint 188-0024 Single Setpoint 188-0030 188-0033