
FEATURE - AIR QUALITY
If Air Quality is selected to be displayed the device will monitor
each CO, VOC, PM, RH, and Temp sensor present and will
display accordingly.
The average air quality is calculated as follows:
1.Each sensor's current reading is rated according to the below
thresholds and given an air quality index (AQI). For each sensor,
a good rating is given an AQI of 90, fair is given an AQI of 60
and poor is given an AQI of 0.
2.The average air quality is calculated and a total air quality
rating is assigned based on the following thresholds. These
thresholds can be adjusted using communications or in the "Air
Quality Settings" menu from the display.
a. Good ≥ 75
b. 55 < Fair < 75
c. Poor ≤ 55
GOOD (AQI 90) FAIR (AQI 60) POOR (AQI 0)
PM2.5 <35 ug/m 35-55 ug/m >55ug/m
TVOC <1000 ug/m 1000-3000 ug/m >3000 ug/m
CO2 <1200 PPM 1200-2000 PPM >2000 PPM
Temp 64-79oF <64oF, >79oF
RH 30-60% <30%, >60% <10%, >90%
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FEATURE - SETPOINT RELAY
All TotalSense Duct and Outdoor models come standard with a
setpoint relay.
The relay source determines which reading or status will
activate the relay. This can be set or adjusted using the display
or communications. See 'Display Navigation Guide' or the
applicable protocol guide for details.
Each source selection has a range listed below. To set turn-
on and turn-o thresholds, a percentage of this range can
be entered into each corresponding parameter. On display
versions, the calculated value will show as the percentage is
adjusted.
Each time a new source is selected, a default relay threshold
will be set based on which technology is chosen. These auto-
set values are listed in the table below.
Source
Selection
Range Default
Turn-on
Threshold
Calculated
Turn-on
value
Default
Turn-o
Threshold
Calculated
Turn-o value
CO2 0-10,000 PPM 8.0% 800 PPM 7.0% 700 PPM
RH 0-100% RH 60% 60% RH 55% 55% RH
Temp* -40 - 122 oF 74% 80oF 73% 78oF
TVOC 0-1000 g/m 3.5% 35 g/m 3% 30 g/m
PM - g/m 1.25% 400 g/m 1.09% 348.8 g/m
*To calculate threshold % for a given temperature, use the
following equation:
% Threshold = (T+40)/162*100
Where T is the temperature in oF
TVOC OPERATION
Training Mode
The TVOC sensor has articial intelligence (AI) that allows it to
sense and understand dierent environments. This AI will take
48 hours to acclimate to an environment once installed. The 48
hours will happen after every device reboot.
During this time, the sensor will go into "training mode" and
will continue to display and output a TVOC value. The staus of
the TVOC can be found in the device settings menu.
Manual Calibration
No manual eld calibration is necessary. To maintain accuracy,
the TVOC sensor will be required to be exposed to fresh air
at least once every 2 days. This can be accomplished by
increasing airow in an area or by opening a window.
Scaling:
Senva’s TVOC sensor uses an Ethanol reading to determine a
raw TVOC value. Additionally, conversion from ppb to
µg/m uses the molecular weight of Ethanol. To make
conversion based on a dierent gas baseline, user may enter
a scaling factor in TVOC Settings on the display or using
communications.