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Honeywell T991A Proportional Temperature Controller

Proportional Temperature Controller
T991A

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 models.
• 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.

Select a link under the "item" tab below to order.

Cat #Setpoint Temperature RangeSensor ElementThrottling RangeBulb SizeCapillary LengthMaximum Operating TemperatureSensor Inputs
T991A10040 F to 100 FCopper bulb3 F to 30 F1/2 in. x 4 3/16 in.5 ft125 F1
T991A10120 F to 100 FCopper bulb3 F to 30 F1/2 in. x 4 3/16 in.20 ft.125 F1
T991A1061160 F to 260 FCopper bulb3 F to 30 F1/2 in. x 4 3/16 in.5 ft280 F1
T991A1079160 F to 260 FCopper bulb3 F to 30 F1/2 in. x 4 3/16 in.20 ft.280 F1
T991A10955 F to 95 FCopper bulb3 F to 30 F1/2 in. x 4 3/16 in.5 ft125 F1
T991A118655 F to 175 FCopper bulb3 F to 30 F1/2 in. x 4 3/16 in.5 ft200 F1
T991A119455 F to 175 FCopper bulb3.5 F to 36 F1/2 in. x 4 3/16 in.20 ft.200 F2
T991A121059 F to 167FCopper bulb3 F to 10 F1/2 in. x 4 3/16 in.5 ft200 F2
T991A124455 F to 175 FCopper bulb3.5 F to 36 F1/2 in. x 4 3/16 in.5 ft200 F2
T991A126955 F to 175 FCopper bulb3.5 F to 36 F1/2 in. x 4 3/16 in.20 ft.200 F2
T991A134355 F to 175 FCopper bulb3.5 F to 36 F1/2 in. x 4 3/16 in.5 ft200 F2
T991A175655 F to 175 FCopper fast response element3.5 F to 36 F1/8 in. x 76 3/8 in.5 ft200 F1
T991A17640 F to 100 FCopper averaging element3 F to 30 F7/64 in. x 24 ft.24 ft.125 F1
T991A20690 F to 100 FCopper fast response element3 F to 30 F1/8 in. x 76 3/8 in.20 ft.125 F1
Type: Modulating Remote bulb
Application:

Provide modulating control of water or air

temperature in ducts or tanks

Color: Gray
Voltage: 24 Vac to 30 Vac
Frequency: 50 Hz; 60 Hz
Output Type: analog

 

 

 

 

 

 

 



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