Series 2000
C7021F
C7023F
C7031G
C7041F
C7021P
C7023P
C7041P
C7021R
C7023R
C7041R
C7021K
C7023K
C7041K
C7021D
C7023D
C7031D
C7041D
C7021J
C7023J
C7031J
C7041J
C7021B/C
C7023B/C
C7031B
C7041B/C
C7021N
C7023N
C7041N
Electronic Temperature Sensors
PRODUCT DATA
APPLICATION
The Series 2000 C7021, C7023, C7031 and C7041 Electronic
Temperature Sensors are designed for use with electronic
controllers in domestic or commercial heating and cooling
systems.
FEATURES
• C7021D, C7023D, C7031D, C7041D for immersion
mounting sense water temperature.
• C7021F, C7023F, C7031G, C7041F sense outdoor air
temperature and are weatherproof for outdoor use
(knockouts allow for 1/2 in. conduit connection).
• C7021J/R, C7023J/R, C7031J, C7041J/R sense average
duct air temperature.
• C7021B/C, C7023B/C, C7031B, C7041B/C sense duct
air temperature.
• C7021K, C7023K, C7041K with strap-on mounting
senses water temperature.
• C7021N, C7023N, C7041N probe senses water or air
temperature.
• C7021P, C7023P, C7041P senses air temperature.
• Solid state components not affected by dust or dirt.
Application......................................................................... 1
Features ............................................................................ 1
Specifications .................................................................... 2
Installation ......................................................................... 8
Wiring ................................................................................11
Operation and Checkout ...................................................11
Contents
SERIES 2000 ELECTRONIC TEMPERATURE SENSORS
SPECIFICATIONS
See Table 1 for additional specifications.
Compatability:
Use Series 2000 C7031, C7041 Temperature Sensors with
Excel 10, 15, 80, 100, and 500 controllers.
Series 2000 C7031B,D,G,J sensors are compatible with
various Honeywell controllers. The C7031G2014 is
compatible with the T7350 Commercial Thermostat.
Series 2000 C7021 temperature sensors are compatible with
TB7600, TB7300 and TB7200 communicating thermostats.
Series 2000 C7023 temperature sensors are compatible with
WEBs-AX I/O modules.
Table 1. Sensor Selection and Application Guide
Element
Model Control Application
C7021B Duct discharge air 6 in. (152) or 12
C7021C Duct discharge air 18 in. (457 mm)
C7021D
C7021F Outdoor air — -40° to 158°F
C7021J Duct discharge air
C7021K Hot water (strap-on
C7021N Water / Air (bullet
C7021P Space air
C7021R Duct discharge air
C7023B Duct discharge air 6 in. (152) or 12
C7023C Duct discharge air 18 in. (457 mm)
C7023D
Hot or chilled water
(averaging sensor
with 4 elements)
mounting)
probe)
temperature (button
probe)
(rigid copper
averaging sensor)
Hot or chilled water
f
Insertion Length
b
5 in. (127 mm)
12 ft (3.7m)
12 ft (3.7m) or 24
ft (7.3m)
in. (305 mm)
b
5 in. (127 mm)
Element
Operating Range
(-40° to 70°C)
-40° to 250°F
(-40° to 121°C)
-40° to 250°F
(-40° to 121°C)
Dimensions:
See Fig. 1 through Fig. 11.
Sensor Accuracy:
±0.36°F at 77°F (±0.2°C at 25°C) for 20K ohm NTC sensors
and 10K ohm NTC Type II and Type III sensors.
Accessories:
32006523-001 20K Probe: to allow replacement of old style
C7031D1062-1 with non-threaded well.
50001774-001 Stainless Steel 304 Well Assembly: 1/2 in.
external and internal NPT threading. Use with C7021D/
C7023D/C7031D/C7041D.
50001775-001 Well Adapter: Used with C7021D/C70231D/
C7031D/C7041D to allow threading sensor into previouslyinstalled Series 1000 32005960-001 Well.
Element Max
Ambient
Tempe rature
250°F (121°C) 10K Ohms NTC @
250°F (121°C)
Sensor Resistance
in Ohms Sensitivity
77° F Type II
10K Ohms NTC @
77° F Type III
—
—
a
ORDERING INFORMATION
When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the
TRADELINE® Catalog or price sheets for complete ordering number.
If you have additional questions, need further information, or would like to comment on our products or services, please write or
phone:
1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).
2. Honeywell Customer Care
1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386
3. http://customer.honeywell.com or http://customer.honeywell.ca
International Sales and Service Offices in all principal cities of the world. Manufacturing in Belgium, Canada, China, Czech
Republic, Germany, Hungary, Italy, Mexico, Netherlands, United Kingdom, and United States.
63-2590—05 2
Table 1. Sensor Selection and Application Guide
Model Control Application
C7023F Outdoor air
C7023J Duct discharge air
(averaging sensor
with 4 elements)
Element
Insertion Length
12 ft (3.7m)
Element
Operating Range
-40° to 158°F
(-40° to 70°C)
-40° to 250°F
(-40° to 121°C)
C7023K Hot water (strap-on
mounting)
f
C7023N Water / Air (bullet
probe)
C7023P Space air
temperature (button
probe)
C7023R Duct discharge air
(rigid copper
averaging sensor)
12 ft (3.7m) or 24
ft (7.3m)
-40° to 250°F
(-40° to 121°C)
C7031B Duct discharge air 6 in. (152 mm) -40° to 250°F
(-40° to 121°C)
C7031D Hot or chilled water 5 in. (127 mm) 40° to 350°F
(4° to 115°C)
C7031G
-2006
C7031G
-2014
C7031J Duct discharge air
Outdoor air — -40° to 120°F
(-40° to 49°C)
Outdoor air —
d
-40° to 120°F
(-40° to 49°C)
12 ft (3.7m) 40° to 180°F
(averaging sensor
(4° to 82°C)
with 4 elements)
C7041B Duct discharge air 6 in. (152 mm) or
12 in. (305 mm)
-40° to 250°F
(-40° to 121°C)
C7041C Duct discharge air 18 in. (457 mm)
b
C7041D
Hot or chilled water
5 in. (127 mm)
C7041F Outdoor air — -40° to 158°F
(-40° to 70°C)
C7041J Duct discharge air
12 ft (3.7m)
(averaging sensor
with 4 elements)
SERIES 2000 ELECTRONIC TEMPERATURE SENSORS
Element Max
Ambient
Tempe rature
250°F (121°C)
250°F (121°C)
370°F (187°C)
120°F (49°C)
120°F (49°C)
250°F (121°C)
250°F (121°C)
Sensor Resistance
in Ohms Sensitivity
10K Ohms NTC @
77° F Type III
1097 at 77° (25°C)
1097 at 77° (25°C)
c
c
1715 at 90°F (32°C)
3484 at 77°F (25°C)
1097 at 77° (25°C)
c
20K Ohms NTC at
77°F (25°C)
e
2.1 (3.9)
2.1 (3.9)
c
2.2 (3.4)
c
2.1 (3.9)
2.1 (3.9)
—
a
—
C7041K Hot water (strap-on
f
C7041N
mounting)
Water / Air (bullet
probe)
C7041P Space air
temperature (button
probe)
C7041R Duct discharge air
(rigid copper
averaging sensor)
-40° to 250°F
(-40° to 121°C)
—
—
12 ft (3.7m) or
24 ft (7.3m)
3 63-2590—05
SERIES 2000 ELECTRONIC TEMPERATURE SENSORS
a
Control sensitivity in ohms per degree F (per degree C) for element operating range.
b
Order immersion well separately (50001774-001)
c
Resistance increases as temperature increases.
d
Use with T7350 Commercial Thermostat.
e
Nonlinear resistance decreases as temperature increases.
f
Not equipped with well; temperature sensed at surface of pipe.
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