Johnson Controls HE-67xx Series Catalog Page
Code No. LIT-1900104
Dimensions, in./mm
HE-67xx Series
TrueRH™ Surface-mount
Duct Humidity/Temperature Sensors
Issued April 2, 2001
HE-67xx Series
TRUERH™ Surface-mount Duct Humidity/Temperature Sensors
Description
The TrueRH™ product line delivers ±2% and
±3% Relative Humidity (RH) Sensing Products
in a full variety of packages. The humidity
sensor’s All-Polymer™ construction increases
resistance to corrosion in HVAC (Heating,
Ventilating, and Air Conditioning)
environments.
HE-67xx Elements are products whose output
signal is 0 to 5 VDC for humidity Indication.
The HE-67xx Series sensors combine
humidity and temperature sensing in an
all-plastic enclosure used inside ducts and
economizer rooftop systems. These models
are available with a nickel or one of two
thermistor temperature sensors.
The thermistor temperature sensors have a
negative temperature coefficient, and a
reference resistance of 2.2k ohms or 10.0k
ohms. The nickel temperature sensor has a
reference resistance of 1.0k ohms. These
units can be powered with 14 to 30 VDC or 20
to 30 VAC and feature a 0 to 5 VDC output.
Features
•TRUERH™ Circuitry and calibration
techniques for which patient protection is
pending
• All-Polymer humidity sensor’s patented
sensing element improves sensor’s
resistance to corrosion
• humidity and temperature sensor in one
unit eliminates need for separate sensors;
reduces installation time and cost
• 2% RH accurate model includes a National
Institute of Standards and Technology
(NIST) certificate of conformance that
documents higher precision for 2% models
• senses RH over full 0 to 100% range to
accommodate a wide range of applications
• protective membrane protects sensors
from contamination
• quick-mount, 2-screw installation reduces
installation time
• compact enclosure for mounting inside
ducts—designed for rooftop unit
applications and retrofits; enables surfacemount installation
Repair Information
If the HE-67xx Series TRUERH™ Surface-
mount Duct Humidity/Temperature Sensors
fails to operate within its specifications,
replace the unit. For a replacement sensor,
contact the nearest Johnson Controls®
representative.
Selection Chart
Code Number Temperature
HE-67N2-0N0GS 1.0k ohm Nickel
HE-67T2-0N0GS 2.2k ohm
HE-67Y2-0N0GS 10.0k ohm
HE-67N3-0N0GS 1.0k ohm Nickel
HE-67T3-0N0GS 2.2k ohm
HE-67Y3-0N0GS 10.0k ohm
Sensor Type
Thermistor
Thermistor
Sensor
Thermistor
Thermistor
Accessories
Code Number Description
ACC-BRKT-100 Mounting Bracket for mounting
ACC-CBL-100 Wiring Harness, 53 in. (1.3 m)
The performance specifications are nomina l and conf orm to accep table industr y standar ds. For ap plications a t condition s beyond th ese specification s, consult the local Johnson Controls o ffice.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2012 Johnson Controls, Inc.
the sensor in a duct;
3.25 H x 3.62 W x 0.75 in. D
(83 x 92 x 19 mm)
RH
Accuracy
±2% ±3%
Technical Specifications
HE-67xx Series TrueRH™ Surface-mount Duct Humidity/Temperature Sensors
Power Requirements 14 to 30 VDC or 20 to 30 VAC at 50/60 Hz, Class 2
Current Draw 3 mA with no load; 25 mA maximum
Output Signal 0 to 5 VDC, 1k ohm maximum load
Humidity
Transmitter
Accuracy HE-67x2: ±2% RH for 20 to 80% RH at 77°F (25°C), ±4% RH
Temperature
Coefficient
Ambient Operating
Conditions
Survival Operating
Conditions
Ambient Storage
Conditions
Terminal Connections 1/4 in. (6.35 mm) male spade
Acceptable Wire Gauge 16 to 24 AWG wire (18 AWG wire recommended)
Dimensions (H x W x L) 3.00 x 3.00 x 1.23 in. (76 x 76 x 31 mm)
for 10 to 20% and 80 to 90% RH at 77°F (25°C)
HE-67x3: ±3% RH for 20 to 80% RH at 77°F (25°C), ±5% RH
for 10 to 20%, and 80 to 90% RH at 77°F (25°C)
-0.1 to 0.05% RH/C at 41°F (5°C); -0.07 to -0.21% RH/C at
149°F (65°C)
32 to 140°F (0 to 60°C); 0-100% RH, 85°F (29.4°C) maximum
dew point
-20 to 140°F (-29 to 60°C); 0 to 100% RH, 85°F (29.4°C)
maximum dew point
-40 to 140°F (-40 to 60°C); 0-100% RH, 85°F (29.4°C)
maximum dew point
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