Honeywell Commercial T991A1194 Proportional Temperature Controller

Honeywell Commercial T991A1194 Proportional Temperature Controller is a precision, modulating control device designed for duct and tank environments.

With a copper bulb sensor (1/2" diameter x 3-9/16" length) and a 20-foot capillary, this controller delivers reliable temperature regulation across a set-point range of 55–175 °F (max 200 °F) and easy integration via 1/2" conduit.

• Modulating, proportional temperature control delivers smooth process regulation and reduces overshoot in ducts and tanks.
• Copper bulb sensor: 1/2" diameter x 3-9/16" length with a 20 ft capillary for flexible placement and quick response.
• Throttling range 3.5–36 °F and set-point range 55–175 °F provide precise, adjustable temperature control.
• Analog output: one 135 Ω potentiometer for straightforward interfacing with external controllers or readouts.
• Electrical specs: 24–30 VAC at 50/60 Hz, with 50 psi direct-immersion pressure rating for robust operation.
• Wiring & enclosure: 1/2" conduit connection and compact gray housing measuring 2" W x 2-1/4" D x 5-5/8" H.
• Sensor inputs: 1 channel, enabling reliable single-sensor temperature control in a variety of installations.

Designed for durable industrial use, the T991A1194 provides dependable performance in HVAC, process control, and automation scenarios.