Honeywell T991A Catalog Page

Temperature Controllers

M23881

BULB LENGTH IS 3-9/16 (91).ON 55 TO 175 F AND 15 TO 75 C RANGE.

KNOCKOUT FOR 1/2-INCH CONDUIT (2)

4-3/16

(106)

(51)

1/2

(13)

3/8

(10)

1-3/16

(51)

17/32

(13)

4-3/16

(106)

5-5/8 (143)

2-1/4

(57)

2-1/8

(54)

15/16 (24)

7/32 DIA.

(3)

T991A Proportional Temperature Controller

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 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

Dimensions in inches (millimeters) Type: Modulating Remote bulb

Application: Provide modulating control of water or air temperature

in ducts or tanks

Color: Gray Voltag e: 24 Vac to 30 Vac Frequency: 50 Hz; 60 Hz Output Type: Analog Number of Sensor Inputs: 1

Setpoint Temperature

Product Number

T991A1004/U

T991A1012/U

T991A1061/U

T991A1079/U

T991A1095/U

T991A1186/U

T991A1194/U

T991A1210/U

T991A1244/U

T991A1269/U

T991A1343/U

358 customer.honeywell.com 70-6910

Range

(F) (C) (F) (C) (F) (C) (inch) (mm) (ft) (m)

0 F to 100 F

160 F to 260 F

5 F to 95 F

55 F to 175 F

59 F to 167F

55 F to 175 F

Maximum Operating Tem per atu re

-18 C to

125 F 52 C 3 F to

+38 C

-18 C to

125 F 52 C 3 F to

+38 C

71 C to

280 F 138 C 3 F to

127 C

71 C to

280 F 138 C 3 F to

127 C

-15 C to

125 F 52 C 3 F to

+35 C

13 C to

200 F 93 C 3 F to

79 C

13 C to

200 F 93 C 3 5 F to

79 C

15 C to

200 F 93 C 3 F to

75 C

13 C to

200 F 93 C 3 5 F to

79 C

13 C to

200 F 93 C 3 5 F to

79 C

13 C to

200 F 93 C 3 5 F to

79 C

Throttling Range Bulb Size

1.7 C to

16.7 C

1.7 C to

16.7 C

1.7 C to

16.7 C

1.7 C to

16.7 C

1.7 C to

16.7 C

1.7 C to

16.7 C

1 9 C to 20 C

1.7 C to

16.7 C

1 9 C to 20 C

1/2 in. diameter x 4 3/16 in. long

1/2 in. diameter x 3 9/16 in. long

1/2 in. diameter x 4 3/16 in. long

1/2 in. diameter x 3 9/16 in. long

30 F

36 F

10 F

36 F

13 mm diameter x 107 mm long

13 mm diameter x 90 mm long

13 mm diameter x 107 mm long

13 mm diameter x 90 mm long

Capillary Length

5 ft 1.5 m One 135 Ohm

20 ft 6.1 m One 135 Ohm

5 ft 1.5 m One 135 Ohm

20 ft 6.1 m One 135 Ohm

5 ft 1.5 m One 135 Ohm

5 ft 1.5m One 135 Ohm

20 ft 6.1m One 135 Ohm

5 ft 1.5m One 135 Ohm

20 ft 6.1m One 280 Ohm

5 ft 1.5m One 280 Ohm

Analog Output Sensor Element Includes

Potentiometer

Copper bulb —

Copper bulb Celsius scale

Copper bulb —

Copper bulb Celsius Scale

Copper bulb 107324A Duct

Copper bulb —

Copper bulb 107324A Duct

Bulb holder

Temperature Controllers

131524A

M17276A

Product Number

T991A1350/U

T991A1426/U

T991A1715/U

T991A1756/U

T991A1764/U

T991A2069/U

Setpoint Temperature Range

(F) (C) (F) (C) (F) (C) (inch) (mm) (ft) (m)

55 F to 175 F

0 F to 100 F

55 F to 175 F

0 F to 100 F

Maximum Operating Temperature

13 C to

200 F 93 C 3 5 F to

79 C

-18 C to

125 F 52 C 3 F to

+38 C

-18 C to

125 F 52 C 3 F to

+38 C

13 C to

200 F 93 C 3 5 F to

79 C

-18 C to

125 F 52 C 3 F to

+38 C

-18 C to

125 F 52 C 3 F to

+38 C

Throttling Range Bulb Size

1 9 C to 20 C

1.7 C to

16.7 C

1.7 C to

16.7 C

1 9 C to 20 C

1.7 C to

16.7 C

1.7 C to

16.7 C

7/64 in. diameter x 24 ft. long

1/2 in. diameter x 4 3/16 in. long

1/8 in. diameter x 76 3/8 in. long

7/64 in. diameter x 24 ft. long

1/8 in. diameter x 76 3/8 in. long

36 F

10 F

36 F

30 F

2 8 mm diameter x 7 3 m long

13 mm diameter x 107 mm long

3 mm diameter x 1 9 m long

2 8 mm diameter x 7 3 m long

3 mm diameter x 1 9 m long

Remote Bulb Controller Accessories

Product Number Description

107323A/U Remote Bu b Shield Assembly, 3/8 in. diameter bulbs, < 5 in. long

Capillary Length

24 ft 7.3 m One 135 Ohm

5 ft 1.5 m One 135 Ohm

24 ft 7.3 m One 135 Ohm

20 ft 6.1 m One 135 Ohm

Analog Output Sensor Element Includes

Potentiometer

Copper averaging element

Copper bulb 107324A Duct

Copper fast response element

Copper averaging element

Copper fast response element

—

Bulb holder

131524A duct coil holder

—

131524A duct coil holder

M17284A

107323A

Commercial

107324A/U Capillary Holder Assembly for duct insertion, 8 3/8 in. long

107408/U Heat Conductive Compound, 4 ounces

112620AA/U Well Assembly., 3 3/4 in. (95 mm) insertion, 3/8 in. (10 mm) diameter, copper

112620BB/U Well Assembly., 5 1/2 in. (140 mm) insertion, 3/8 in. (10 mm) diameter, copper

112622AA/U Well Assembly., 4 in. (102 mm) insertion, 1/2 in. (13 mm) diameter, copper

112624AA/U Well Assembly., 4 3/4 in. (121 mm) insertion, 1/2 in. (13 mm) diameter, stainless steel

112628AA/U Well Assembly., 4 3/4 in. (121 mm) insertion, 1/2 in. (13 mm) diameter, stainless steel

112630AA/U Well Assembly., 4 1/4 in. (108 mm) insertion, 1/2 in. (13 mm) diameter, copper

112632AA/U Well Assembly., 4 1/4 in. (108 mm) insertion, 1/2 in. (13 mm) diameter, stainless steel

112634AA/U Well Assembly., 4 1/4 in. (108 mm) insertion, 1/2 in. (13 mm) diameter, copper

131524A/U Capillary Holder Assembly., 8 3/8 in. long, duct insertion

M17275A

Components

107324A

M17401A

193987GA/U Encapsulated platinum sensing element used with the T7075 and T775. 2 5/8 in long,

3/8 in diameter, 6 in. leads.

70-6910 359

Honeywell T991A Catalog Page

Specifications and Main Features

Frequently Asked Questions

User Manual