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Johnson Controls HE-67xx Series TRUERH™ Humidity Element with Temperature Sensors

TRUERH™ Humidity Element with Temperature Sensors
HE-67xx Series

The HE-67xx Series Humidity devices house both a humidity and a temperature sensor in a wall or duct-mount style. The humidity sensor is capable of measuring Relative Humidity (RH) over the entire range of 0 to 100%, and its All-Polymer™ construction provides improved resistance to chemical corrosion. The TRUERH™ product line delivers devices with RH accuracy of either ±2% or ±3% RH. TRUERH™ humidity elements produce voltage output signals proportional to measured humidity for humidity indication.

Temperature sensors are available in thin-film nickel, thin-film platinum, and silicon. The elements are powered with 14 to 30 VDC or 20 to 30 VAC and feature a user-selectable humidity output of 0 to 10 VDC or 0 to 5 VDC.

• TRUERH™ circuitry and calibration techniques for which patent protection is pending
• All-Polymer humidity sensor patented sensing element provides accurate and reliable humidity sensing
• tested and calibrated with equipment certified to be in compliance with National Institute of Standards and Technology (NIST) guidelines
• ±2% RH accurate model includes test and calibration equipment certificate of calibration conformance 
• humidity and temperature sensors in one unit eliminates the need for separate sensors and reduces installation costs
• user-selectable output voltage range allows choice of standard voltage outputs for use with systems in service or new systems
• all-plastic material for duct probe improves thermal performance and complies with Underwriters Laboratories Inc.® (UL) flammability ratings for plenum use; complies with Blue Angel (Germany) and TCO'95 (Sweden) environmental regulations

• TRUERH™ circuitry and calibration 
techniques for which patent protection is 
pending
• All-Polymer humidity sensor patented 
sensing element provides accurate and 
reliable humidity sensing
• tested and calibrated with equipment 
certified to be in compliance with National 
Institute of Standards and Technology 
(NIST) guidelines
• ±2% RH accurate model includes test and 
calibration equipment certificate of 
calibration conformance 
• humidity and temperature sensors in one 
unit eliminates the need for separate 
sensors and reduces installation costs
• user-selectable output voltage range allows 
choice of standard voltage outputs for use 
with systems in service or new systems
• all-plastic material for duct probe improves 
thermal performance and complies with 
Underwriters Laboratories Inc.® (UL) 
flammability ratings for plenum use; 
complies with Blue Angel (Germany) and 
TCO'95 (Sweden) environmental 
r

Select a link under the "item" tab below to order.

Cat #DescriptionsTypeRH Accuracy ±2%RH Accuracy ±3%
HE-67P2-0N0BTWall mount humidity element with thin-film platinum temperature sensorHE-67xx Series Wall Mount Models
HE-67S2-0N0BTWall mount humidity element with silicon temperature sensorHE-67xx Series Wall Mount Models
HE-67N2-0N0BTWall mount humidity element with thin-film nickel temperature sensorHE-67xx Series Wall Mount Models
HE-67P3-0N0BTWall mount humidity element with thin-film platinum temperature sensorHE-67xx Series Wall Mount Models
HE-67S3-0N0BT ¹Wall mount humidity element with silicon temperature sensorHE-67xx Series Wall Mount Models
HE-67N3-0N0BTWall mount humidity element with thin-film nickel temperature sensorHE-67xx Series Wall Mount Models
HE-67P2-0N00PDuct probe humidity element with thin-film platinum temperature sensorHE-67xx Series Duct Probe Models
HE-67S2-0N00PDuct probe humidity element with silicon temperature sensorHE-67xx Series Duct Probe Models
HE-67N2-0N00PDuct probe humidity element with thin-film nickel temperature sensorHE-67xx Series Duct Probe Models
HE-67P3-0N00PDuct probe humidity element with thin-film platinum temperature sensorHE-67xx Series Duct Probe Models
HE-67S3-0N00P¹Duct probe humidity element with silicon temperature sensorHE-67xx Series Duct Probe Models
HE-67N3-0N00PDuct probe humidity element with thin-film nickel temperature sensorHE-67xx Series Duct Probe Models
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
Acceptable Wire Gauge: 16 to 24 AWG (18 AWG recommended)
Humidity Element
at 77°F (25°C):
Signal 0 to 5 VDC or 0 to 10 VD, 1,000 ohm maximum load
Accuracy HE-67x2: ±2% RH for 20 to 80% RH at 77°F (25°C)
±4% RH 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)
Temperature Coefficient 0.1 to 0.05% RH/°C at 5°C (41°F) to
-0.07 to -0.21% RH/°C at 65°C (149°F)
Response Time Within 5% RH of actual in 15 minutes for 10 to 30%, 30 to 90%, and 40 to 90% RH
Temperature
Sensors:
Thin-film Nickel Accuracy: ±0.34°F (0.18°C) at 70°F (21°C)
Reference Resistance: 1000 ohms at 70°F (21°C)
Resistance Change: Approximately 3 ohms/°F (5 ohms/°C)
Silicon Accuracy: ±1°F (0.6°C) at 70°F (21°C)
Reference Resistance: 1035 ohms at 77°F (25°C)
Resistance Change: Approximately 4 ohms/°F (8 ohms/°C)
Thin-film Platinum Accuracy: ±0.65°F at 70°F (±0.36°C at 21°C)
Reference Resistance: 1000 ohms at 32°F (0°C)
Resistance Change: Approximately 2 ohms/°F (4 ohms/°C)
Electrical Connections: 3-position and 2-position screw terminal blocks
Ambient Operating Conditions: 32 to 140°F (0 to 60°C) 0 to 100% RH, 85°F (29.4°C) maximum dew point
Survival Operating Conditions: -20 to 140°F (-29 to 60°C) 0 to 100% RH, 85°F (29.4°C) maximum dew point
Ambient Storage Conditions: -40 to 140°F (-40 to 60°C) 0 to 100% RH, 85°F (29.4°C) maximum dew point
Materials: Wall Mount Beige plastic cover with metal base and metal foil face plates
Duct Probe White plastic cover with dark gray plastic housing and probe
Dimensions: Wall Mount (H x W x D) 1.81 x 2.12 x 3.12 in. (46 x 54 x 79 mm)
Duct Probe (H x W x D) 3.28 x 3.25 x 8.27 in. (83 x 83 x 210 mm) Probe (L x D): 6.25 x 0.98 in. (159 x 25 mm)
Agency Compliance: Duct Probe Material 94-5V flammability rated per UL 94


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