{"product_id":"t991a1061-honeywell-24-vac-modulating-temperature-controller-160-260-f-5-ft-capillary","title":"T991A1061 | Honeywell 24 VAC Modulating Temperature Controller 160–260 °F, 5 ft Capillary","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"396\" data-start=\"144\"\u003eThe Honeywell T991A1061 is a modulating temperature controller designed to provide precise analog temperature control in water or air systems. Operating from 24 VAC to 30 VAC, it features a remote copper bulb sensor with a 5 ft capillary for accurate temperature monitoring in ducts or tanks. The unit offers a proportional analog output through a 135 Ω potentiometer for smooth modulation of connected equipment.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003cp class=\"\" data-end=\"574\" data-start=\"284\"\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 100%; height: 509.438px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003eControls \u0026amp; Indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003eT991A1061\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003eTemperature\/Process Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 39.1875px;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 39.1875px;\"\u003eModulating control of air or water temperature in ducts or tanks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003e24 VAC to 30 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eOutput Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003eAnalog (135 Ω potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003e50 Hz \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eSensor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003eCopper bulb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eSensor Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eCapillary Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003e5 ft (1.5 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eBulb Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003e½ in dia × 4-3\/16 in L (13 mm × 107 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eSetpoint Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003e160 °F to 260 °F (71 °C to 127 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 39.1875px;\"\u003e\u003cstrong\u003eMaximum Operating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 39.1875px;\"\u003e280 °F (138 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eThrottling Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003e3 °F to 30 °F (1.7 °C to 16.7 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eCase Color\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003eGray\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 39.1875px;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 39.1875px;\"\u003e5-5\/8 in H × 2 in W × 2-1\/4 in D (143 mm × 51 mm × 57 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003ePanel or surface mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eMax Bulb Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003e50 psi (direct immersion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eOutput Signal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003eAnalog, modulating 135 Ω potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.4267%; height: 19.5938px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.2607%; height: 19.5938px;\"\u003e1.20 lbs (0.54 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About \u003cspan data-sheets-root=\"1\"\u003eT991A1061\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThe T991A1061 belongs to Honeywell’s T991 Series of modulating temperature controllers, which provide accurate proportional control for heating and cooling systems. This model covers a temperature range of 160 °F to 260 °F (71 °C to 127 °C) and includes a copper bulb sensing element for fast thermal response. With a compact case and front-access adjustable setpoint dial, it is ideal for water heaters, air-handling units, or process tanks. The controller’s fast-response sensing design ensures stability and accuracy, while the throttling range (3 °F to 30 °F adjustable) allows fine-tuning for specific control requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAnalog Modulating Control: Provides smooth proportional output for accurate temperature regulation.\u003c\/li\u003e\n\u003cli\u003eWide Temperature Range: Adjustable setpoint from 160 °F to 260 °F (71 °C to 127 °C).\u003c\/li\u003e\n\u003cli\u003eCopper Bulb Sensor: Durable and thermally responsive for precise measurement.\u003c\/li\u003e\n\u003cli\u003eAdjustable Throttling Range: 3 °F to 30 °F (1.7 °C to 16.7 °C) for optimized control sensitivity.\u003c\/li\u003e\n\u003cli\u003eRemote Capillary Design: 5 ft (1.5 m) capillary enables flexible sensor mounting in ducts or tanks.\u003c\/li\u003e\n\u003cli\u003eAmbient Temperature Compensation: Corrects for ambient effects on the case and tubing.\u003c\/li\u003e\n\u003cli\u003eUser-Friendly Adjustment: Setpoint dial visible and adjustable through front cover.\u003c\/li\u003e\n\u003cli\u003eRobust Construction: Designed for continuous operation with maximum bulb immersion pressure of 50 psi.\u003c\/li\u003e\n\u003cli\u003eHigh Operating Limit: Withstands up to 280 °F (138 °C) maximum operating temperature.\u003c\/li\u003e\n\u003cli\u003eVersatile Application: Suitable for modulating control of air or liquid temperature in HVAC or process systems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe T991A1061 delivers the reliability and precision required for industrial and commercial temperature modulation applications.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":49105087103232,"sku":"T991A1061","price":1453.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/s-l1600_0e1c5a52-e8be-4769-9fbd-36543b0e650b.webp?v=1785539853","url":"https:\/\/alotechparts.com\/products\/t991a1061-honeywell-24-vac-modulating-temperature-controller-160-260-f-5-ft-capillary","provider":"Alo Tech Solutions","version":"1.0","type":"link"}