Page 73 - 2020 Catalog

AIR QUALITY

ORDERING SPECIFICATIONS
ORDERING
(1)
Power Supply 12-30VDC/24VAC , 24mA max
VT0D - Output Analog outputs 0-10V, 0-5V, 2-wire or 3-wire 4-20mA
Output Type Output scaling VOC intensity 0-500 (relative intensity)
A = 0-5VDC, 3-wire Thermistor Options Yes, see ordering table on left
B = 0-10VDC, 3-wire HUMIDITY/TEMPERATURE
C = 4-20mA, 2-wire Type MOS
D = 4-20mA, 3-wire Gas Ethanol
VOC Sensor
Temperature Performance Range 0-1000ppm of ethanol equivalent
A = None Response Time <10s
C = 100Pt (385) Humidity Compensation Yes
D = 1000Pt (385)
E = 10k type 2 Dimensions 4.0’ h x 4.4”w x 2.1”d (+6.8” probe)
F= 10k type 3 0 to 90% RH (operating)
G = 10k type 3 w/11k shunt Enclosure RH 0- to 80% (storage) HT1R Series
H = 3k
I = 2k2 Temp Rating 14 to 122oF (-10 to 50oC) (operating)
J = 1k8 5 to 30ºC (storage)
K = 20k Compliance RoHS
L = 100k
(1) One side of transformer, secondary is connected to signal common. Dedicated transformer is
recommended. 15-30VDC/24VAC power supply voltage required for 10 volt output.

WHAT IS VOC?

VOC means volatile organic compounds which can be found
VOC Contaminant Sources
in a number of harmful and other gases, odors, and smoke.
Some example contaminants are listed on the right. Paints, glues, solvents, furniture,
Harmful Gases mattresses, carpet, flooring,
building products
The output of this product has been converted from a raw Alcohol, cleaners, perfume, cooking
Other gases smells
Ethanol concentration into an intensity value, ranging from Rotten food, flatulence, breath,
0-500. An environment with normal air quality will typically Odors cosmetics, pet pee
read about 100 on this scale. Suggested control actions are Smoke Cigarette smoke
listed to the right.

VOC Level Suggested Action

0-200 None, air quality is good
200-300 Ventilate, purify
300-500 Ventilate, purify intensely

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