DUCT HUMIDITY/TEMPERATURE TRANSMITTER
112.5 mm
4.43"
99.7 mm 53.7 mm
3.925" 2.115"
228.60 mm
9”
116.5 mm 12.70 mm
4.585" 0.50"
60 micron HDPE filter
304 Series S/S Probe
0.5" NPT
HTDT SERIES
PRODUCT DESCRIPTION SPECIFICATIONS
The duct temperature and humidity transmitter
HUMIDITY SENSOR TYPE Thermoset polymer-based capacitance sensor chip
series uses a highly accurate and reliable
Thermoset Polymer based capacitance humidity TEMPERATURE SENSOR TYPE 1000Ω Platinum, IEC 751, 385 Alpha, thin film
sensor and Platinum RTD temperature sensor HUMIDITY ACCURACY ±2, 3, or 5 %RH (5 to 95 %RH)
together with state-of-the-art digital linearization TEMPERATURE ACCURACY ±0.1% of span
and temperature compensated circuitry to SENSOR RESPONSE TIME 8 seconds typical
monitor humidity levels. The sensors are MEASUREMENT RANGE 0 to 100 %RH
encapsulated in a 228.60 mm (9”) long by 12.7 HYSTERESIS ±0.8%RH maximum
mm (0.5”) diameter S/S probe. A 60 micron HDPE REPEATABILITY ±0.5 %RH typical
filter protects the sensor for contaminants. A
OPERATING TEMPERATURE -40 to 60°C (-40 to 140°F)
weatherproof Polycarbonate enclosure is provided
OPERATING HUMIDITY 0 to 95 %RH non-condensing
for ease of installation.
POWER SUPPLY 24 Vac/Vdc, ±10%
CONSUMPTION 22 mA maximum
INPUT VOLTAGE EFFECT Negligible over specified operating range
TYPICAL INSTALLATION PROTECTION CIRCUITRY Reverse voltage protected and output limited
For complete installation and wiring details,
please refer to the product installation OUTPUT SIGNAL 4-20 mA current loop, 0-5 Vdc or 0-10 Vdc (factory configured)
instructions. OUTPUT DRIVE @ 24 VDC Current: 550Ω max
Voltage: 10,000Ω min
The duct type probes are installed through a hole INTERNAL ADJUSTMENTS Temperature: ZERO and SPAN pots
Humidity: Offset Pot -10% to +10%
in the side of the duct to monitor a single point
ENCLOSURE B: Grey Polycarbonate, UL94-V0, IP65 (NEMA 4X)
humidity within the duct. Install the probe in F: Same as B, with thread adapter (1/2” NPT to M16) and cable gland fitting
a straight section of duct at a suitable distance
PROBE 230mm (9”) length x 12.7mm (1/2”) diameter s/s with porous filter
downstream from any heating, cooling or
TERMINATION Screw terminal block (14 to 22 AWG)
humidification devices.
WEIGHT 220g (7.8 oz) including probe
Mounting tabs on the outside of the enclosure for COUNTRY OF ORIGIN Canada
ease of installation.
A terminal block connection is provided. for
connection to the Building Automation System.
ACCESSORIES - INCLUDED WITH F STYLE ENCLOSURE
CABLE GLAND FITTING THREAD ADAPTER 1/2” NPT TO M16
GREYSTONE HAS AN ISO 9001 REGISTERED QUALITY SYSTEM
WIRING INFORMATION
TERMINAL FUNCTION
PWR +24 Vac/dc
COM Common
TEMP Analog Output
RH Analog Output
TEMP
PWR
COM
RH
ORDERING PART NUMBER
PRODUCT HTDT Duct Humidity/Temperature Transmitter HTDT
ENCLOSURE B Polycarbonate with hinged and gasketed cover
F Same as B, with thread adapter and cable gland fitting
RH ACCURACY 2 2%
3 3%
5 5%
TEMPERATURE SENSOR 12 1000Ω Platinum, IEC 751, 385 Alpha, thin film
OUTPUT SIGNALS (RH AND TEMPERATURE) A 4-20 mA
D 0-5 Vdc
E 0-10 Vdc
TEMPERATURE SPAN 001 0 to 35°C (32 to 95°F)
002 0 to 50°C (32 to 122°F)
006 -50 to 50°C (-58 to 122°F)
NOTE: Greystone Energy Systems, Inc. reserves the right to make design modifications without prior notice.
Greystone Energy Systems, Inc. Ph: +1 (506) 853-3057 Fax: +1 (506) 853-6014
150 English Drive, Moncton, North America: 1-800-561-5611
New Brunswick, Canada E1E 4G7 E-mail: mail@greystoneenergy.com
PRINTED IN CANADA Copyright © Greystone Energy Systems Inc. All Rights Reserved www.greystoneenergy.com PS-HTDTXXX-04
