Product/Technical Bulletin TE-637DP-1
Issue Date 0316
24-9378- 3, Rev. C
TE-637DP-1 Surface-mount
Duct Temperature Sensor
The TE-637DP-1 provides temperature sensing in a
compact surface-mounted unit for use inside
economizer rooftop systems. The unit housing is a
durable plastic enclosure that installs easily to the duct
surface. A protective membrane prevents sensor
contamination due to dust, dirt, and insects.
The TE-637DP-1 has a thermistor temperature sensor
with a negative temperature coefficient, and a
reference resistance of 2.2k ohms at 77°F (25°C).
Figure 1: TE-637DP-1 Surface-mount Duct
Temperature Sensor
Features and Benefits
Protective Membrane Prevents sensor contamination
Quick-mount, 2-screw
Installation
Compact Enclosure for
Mounting Inside Ducts
© 2016 Johnson Controls, Inc. 1
Part No. 24-9378-3, Rev. C www.johnsoncontrols.com
Code No. LIT-216325
Reduces installation time
Designed for rooftop unit applications and
retrofits; enables surface-mount installation
roduct Overview
P
The TE-637DP-1 outputs temperature signals for use in
rooftop economizer applications. The TE-637DP-1 is
suitable for use with a Johnson Controls Direct Mount
Economizer (DME) Controller.
The TE-637DP-1 is a durable, yet cost-effective solution
for sensing temperature. It is housed in an easy-to-install
plastic enclosure, which speeds commissioning time and
reduces cost.
IMPORTANT: The TE-637DP-1 is intended to provide
an input to equipment under normal operating
conditions. Where failure or malfunction of the
TE-637DP-1 could lead to personal injury or property
damage to the controlled equipment or other property,
additional precautions must be designed into the
control system. Incorporate and maintain other
devices, such as supervisory or alarm systems or
safety or limit controls, intended to warn of or protect
against failure or malfunction of the TE-637DP-1.
IMPORTANT: Le TE-637DP-1 est destiné à
transmettre des données entrantes à un équipement
dans des conditions normales de fonctionnement.
Lorsqu'une défaillance ou un dysfonctionnement du
TE-637DP-1 risque de provoquer des blessures ou
d'endommager l'équipement contrôlé ou un autre
équipement, la conception du système de contrôle doit
intégrer des dispositifs de protection supplémentaires.
Veiller dans ce cas à intégrer de façon permanente
d'autres dispositifs, tels que des systèmes de
supervision ou d'alarme, ou des dispositifs de sécurité
ou de limitation, ayant une fonction d'avertissement ou
de protection en cas de défaillance ou de
dysfonctionnement du TE-637DP-1.
heory of Operation
T
The TE-637DP-1 has a thermistor temperature
sensor with a negative temperature coefficient, and
a reference resistance of 2.2k ohms at 77°F (25°C).
(See Figure 3.)
80,000
70,000
60,000
Resistance
(ohms)
50,000
40,000
30,000
20,000
10,000
0
-40
-20
-40
-290-1820-740460168027
Temperatu r e, °F (°C)
1003812049140
Figure 3: Temperature vs. Resistance
Relationship for the TE-637DP-1
60
imensions
D
3.0
76
3.0
76
2.5
63.5
2.5
63.5
3/16
5
Diameter
1.23
31
Figure 2: TE-637DP-1 Dimensions, in. (mm)
2 TE-637DP-1 Surface-mount Duct Temperature Sensor Product/Technical Bulletin