Honeywell C7021 Catalog Page
Temperature Sensors
C7021 10K ohm NTC Type II Temperature Sensors
Commercial
The Series 2000 10K ohm NTC Electronic Temperature Sensors are
designed for use with electronic controllers in domestic or
commercial heating and cooling systems.
• B and C Model sense duct air temperature
• D models for immersion mounting sense water temperature
• F models sense outdoor air temperature and are weatherproof for
outdoor use (knockouts allow for 1/2 in. conduit connection).
• J and R models sense average duct air temperature
• K models with strap-on mounting senses water temperature
• P models sense air temperature
• Solid state components not affected by dust or dirt
Product Number Application
C7021B2005/U Duct Discharge 6 in. 152 mm -40 F to +250 F -40 C to +121 C
C7021B2013/U Duct Discharge 12 in. 305 mm -40 F to +250 F -40 C to +121 C
C7021C2003/U Duct Discharge 18 in. 457 mm -40 F to +250 F -40 C to +121 C
C7021D2001/U Immersion sensor for hot or chilled water,
C7021F2009/U Outside air temperature — — -40 F to +158 F -40 C to +70 C
C7021J2007/U Duct discharge air (averaging) 12 ft. 3.66 m -40 F to +250 F -40 C to +121 C
C7021K2005/U Hot or chilled water (strap on) — — -40 F to +250 F -40 C to +121 C
C7021N2001/U Water or air temperature sensor (probe sensor) — — -40 F to +250 F -40 C to +121 C
C7021P2004/U Temperature sensor — — -40 F to +250 F -40 C to +121 C
C7021R2000/U Duct discharge air (averaging) 12 ft. 3.66 m -40 F to +250 F -40 C to +121 C
C7021R2018/U Duct discharge air (averaging) 24 ft. 7.3 m -40 F to +250 F -40 C to +121 C
purchase well 50001774-001 separately
Sensor Type: 10 K ohm NTC @ 77 F Type II
Maximum Ambient Temperature: 302 F (150 C)
Shipping Temperature Range: -30 F to +160 F (-34 C to +71 C)
Used With: TB7600, TB7300, TB7200 Series communicating
thermostats
Insertion Length Operating Temperature Range
(inch) (mm) (F) (C)
5 in. 127 mm -40 F to +250 F -40 C to +121 C
Components
70-6910 457
Temperature Sensors
2-5/16
(59)
15/16
(23)
1-11/16
(43)
4-3/16
(107)
3/4
(19)
4
(70)
1-11/16
(43)
C7031B: 5-11/16 (145)
C7021B, C7023B,C7041B: 11-5/8 (295)
C7021C, C7023C,C7041C: 17-5/8 (448)
M22131A
1-13/16
(46)
7/16 (12)
1/8 NPSM (3)
3-7/8 (99)
2-5/16
(59)
1-11/16
(43)
4-3/16
(107)
1/4
(6)
4
(70)
1-11/16
(43)
6-11/16 (170)
M22596
5 (127)
1/2 NPSM (13)
2-5/16
(59)
15/16
(23)
1-11/16
(43)
4-3/16
(107)
3/4
(19)
4
(70)
1-11/16
(43)
M22818
1-13/16
(46)
7/16 (12)
1/8 NPSM (3)
3-7/8 (99)
DEPENDING ON THE MODEL, THE ELEMENT LENGTH IS EITHER 12 FT (366 CM) OR 24 FT (732 CM).
1
1
Diagrams for C7031, C7032, C7041 and T775 Series 2000 Sensor
C7021B/C, C7023B/C, C7041B/C Dimensions
C7021D, C7023D, C7031D, C7041D Dimensions in inches (millimeters)
C7021R, C7023R, C7041R Dimensions
458 customer.honeywell.com 70-6910
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