Honeywell Temperature Controller, T991A1004
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T991A Proportional Temperature Controller
T991A Proportional Temperature Controllers provide modulating control of water or air temperatures in ducts, tanks, and similar applications. Standard models have a sensing bulb and capillary; fast response models have a coiled sensing element that operates at least four times faster than standard controllers, depending upon operating conditions.
• All models ambient compensated.
• Controls temperature of air or liquids
• Sensing element capillary tubing allows remote mounting of sensing element.
• Set point may be read and adjusted through cover.
• Throttling dial inside case adjusts proportioning range.
T991A: standard or fast response
ELECTRICAL RATING: 24-30v ac.
POTENTIOMETER: 135 ohms (280 ohms available as option on model with 55-175°F range).
Replaces Part Number: T991A1004