Proportional (135 ohm) remote bulb controllers for modulating control of water or air temperature in ducts, tanks and similar applications.
Fast response models (for duct mounting) have coiled sensing element giving at least four times faster response than standard model|Ambient temperature compensated for the case and tubing|Sensing element capillary tubing allows remote mounting of sensing element|Setpoint may be read and adjusted through cover|Throttling dial inside case adjusts proportional throttling range|24 ft L capillary|(1) 135 Ohm potentiometer analog output|1 input copper averaging sensor element|125 deg F maximum operating temperature
Honeywell Modulating Temperature Controller, Analog, Series: T991A, 0 to 100 deg F Control Range, 7/64 in Dia x 24 ft L Sensing Bulb, 24 to 30 VAC, Gray, 2 in W x 2-1/4 in D x 5-5/8 in H, Import