Senva T Talsensetm Series Duct And Outdoor Air Quality Sensor Instruction Manual (+ PDF)

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Series Duct and Outdoor Air Quality Sensor
BACnet/Modbus/Analog

INSTALLATION INSTRUCTIONS

IMPORTANT WARNINGS

Only qualified trade installers should install this product
This product is not intended for life-safety applications
Do not install in hazardous or classified locations
The installer is responsible for all applicable codes
De-energize power supply prior to installation or service

PRODUCT APPLICATION LIMITATION:
Senva products are not designed for life or safety applications. Senva products are not intended for use in critical applications such as nuclear facilities, human implantable device or life support. Senva is not liable, in whole or in part, for any claims or damages arising from such uses.

FEATURES

The TotalSense series design allows customization for a sensor that meets project requirements for monitoring temperature, carbon dioxide (CO2), total volatile organic compounds (TVOC), particulate matter (PM), relative humidity (RH). The product can be ordered as a stand-alone CO2, RH, Temp, TVOC, PM sensor as well as almost any combination of sensors. All models come standard with programmable set-point relay and barometric pressure compensation for CO2.
Choose the analog version to receive up to three selectable and programmable analog outputs or utilize the communications version to access a myriad of data through Modbus RTU or BACnet MS/TP.

PRODUCT IDENTIFICATION

To verify the features see the ‘Product Identification’ section of the installation manual or use the configuration tool at senvainc.com or scan the QR code on the right.
http://tny.sh/AQ2Web
TotalSense Configurator

INSTALLATION

AQD (Duct) Installation
1. Drill a 3/4” hole in duct. Install sensor using gasket and screws provided. The pickup tube will ensure adequate air flow regardless of air flow direction.
2. Mount unit to duct with supplied screws. Continue to step 3 under general installation.
AQO (Outdoor) Installation

Select an outdoor location under an eave on north side of building away from direct sunlight and rain exposure.
Mount product to building with supplied screws. Continue to step 3 under general installation.
General (both) Installation
If installing with a conduit adapter, remove and replace the factory-installed cable gland.
Wire analog (or RS485 for BACnet version) outputs as needed.
Apply power to sensor.
Tighten cable gland firmly around wires. If installing with a conduit adapter, seal wire entry to prevent conduit air from affecting sensor readings or operation.
Close lid and tighten screw. Cover must be securely installed to prevent moisture from entering enclosure.

SETUP – WIRING

The following diagrams show terminal locations for each version of the TotalSense. The number of options selected will determine which of the terminals are included on each device.
For example, if only one sensor is chosen, only 1 pair of analog terminals will be present. Each device will have 4-8 terminals on the left side, 0-4 on the top, and 0-4 on the right side.
Analog Wiring
*These terminals may not be populated depending on which model is ordered.
Communications Wiring
NOTE: A 120 Ω termination resistance may be added in parallel with the RS-485 +/- by moving the very top DIP switch (DIP 1) to the left position. See “DIP Configuration” section for more information.

SETUP – ANALOG

Switch 1 with two DIP switches will be provided with every device and Switch 2 with an additional 12 DIP switches will be provided with communications devices. The following diagram shows how each setting can be configured using the provided switches.
Comms DIP Settings
For analog voltage output, select either 0-5V (left) or 0-10V (right) outputs. These analog ranges can be adjusted using the color OLED display. Adjustments made using the OLED display will override this DIP switch setting.SETUP – COMMUNICATIONS
Comms DIP Settings

DIP	Left	Right
1	No Termination	Termination Resistor
2	Modbus	BAC net

DIP	Function	DOWN	UP
1	MAC6	0 (off)	1 (on)
2	MACS	0	1
3	MAC4	0	1
4	MAC3	0	1
5	MAC2	0	1
6	MAC1	0	1
7	MACO	0	1
8	BAUD2	0	1
9	BAUD1	0	1
10	BAUDO	0	1
11	D/P/S1	0	1
12	D/P/SO	0	1

DIP	Function
1-7	MAC Address/ Modbus Address 0-127 (binary)
8-10	Baud Rate 0(000)=9600 1(001)=19200 2(010)=38400 3(011)=57600 4(100)=76800 5(101)=115200
11-12	Data/Parity/Stp 0(00)=8N1 1(01)=8N2 2(10)=8O1 3(11)=8E1

DIP switches 1-7 can be arranged in 127 binary configurations to set the MAC address (BACnet) or the Modbus address. Similarly, the baud rate can be set by DIP switches 8-10 and the data/parity/stop bit can be set by DIP switches 11 and 12.

ADVANCED SETUP


http://tny.sh/AQ2DisplayGuide	http://tny.sh/AQ2BACnet	http://tny.sh/AQ2Modbus

SETUP – DISPLAY

Example screen:
TotalSense devices ordered with color OLED display can be configured from the display or over communications (if applicable). The default screen layout will vary depending on which model is ordered. Each of the 5 sections can be customized. See “Display Navigation Guide” for more information.Screen Lock:
If the screen is locked, a lock icon will show when any button is pressed. To unlock, hold the UP and DOWN arrows for 5 seconds. To disable the lock feature, see “Display Navigation Guide”.
Changing Settings:
To change any setting, press ENTER to see the setup menu and navigate to the desired parameter type and press ENTER again to choose. The example below shows how to adjust the center reading on the display. The dashed blue line shows the desired selections and the blue buttons show how to navigate.
Changing a value:
To adjust a numerical setting, set each digit individually and press ENTER to move the cursor from left to right. When all digits are set, the value will be saved when ENTER is pressed again.

FEATURE – AIR QUALITY

If Air Quality is selected to be displayed the device will monitor each CO2, VOC, PM, RH, and Temp sensor present and will display accordingly.
The average air quality is calculated as follows:

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.
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/m3	35-55 ug/m3	>SSug/m3
TVOC	<1000 ug/m3	1000-3000 ug/m3	>3000 ug/m3
CO2	<1200 PPM	1200-2000 PPM	>2000 PPM
Temp	64-79°F	<64°F, >79°F
RH	30-60%	<30%, >60%	<10%, >90%

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 turnon and turn-off 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 autoset values are listed in the table below.

Source Selection	Range	Default Turn-on Threshold	Calculated Turn-on value	Default Turn-off Threshold	Calculated Turn-off value
CO2	0-10,000 PPM	8.%	800 PPM	7.%	700 PPM
RH	0-100% RH	60%	60% RH	55%	55% RH
Temp*	-40 – 122 °F	74%	80°F	73%	78°F
TVOC	0-1000 pg/m3	4.%	35 pg/m3	3%	30 pg/m3
PM	0-32000 pg/m3	1.%	400 pg/m3	1.%	348.8 pg/m3

*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 artificial intelligence (AI) that allows it to sense and understand different 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 field 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 airflow 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/m3 uses the molecular weight of Ethanol. To make
conversion based on a different gas baseline, user may enter a scaling factor in TVOC Settings on the display or using communications.

DIMENSIONS

AQ2D Dimensions AQ2O Dimensions

CO2 CALIBRATION

Automatic Calibration feature:
The CO2 sensor will automatically baseline CO2 levels and gradually make adjustments to compensate for sensor drift due to long-term aging of the IR light source. In applications where CO2 levels are continuously elevated, or spaces are occupied day and night, it is recommended to use our dual channel CO2 sensor with automatic calibration disabled.
Senva CO2 sensors are factory calibrated to controlled test gases. No field calibration is necessary or recommended. However, to facilitate compliance with job requirements and commissioning procedures, provisions for field calibration are provided:

Locate calibration instrument and sensor in close proximity to each other in a controlled environment free of drafts, people, and equipment to reduce influence on CO2 and temperature.
Compare output of sensor to calibration instrument, and note difference. (In 0-10V mode/2000ppm range, 1V =200ppm)
Refer to the “Setup-Display” section to adjust offset value for CO2 as needed. Factory calibration may be restored by setting offset back to 0.

In extreme cases where the sensor module has been damaged, a new module may be installed in the field. Consult factory for replacement module and instructions.

TROUBLESHOOTING

Symptom	Solution
Alarm Icon on home screen	The device has experienced an error with one of the sensors. Navigate to “Advanced Settings” > “Diagnostics” screen to view more information. All zeros will be displayed if no error is present. See “Display Navigation Guide”, or the applicable communications guide or consult factory for troubleshooting help or replacement element.
No output	Check wiring. Ensure power supply meets requirements.
Reading error	Verify control panel software is configured for correct output scaling.
	Verify accuracy of test instrument. Observe installation and calibration guidelines.
	Verify unit is located away from sources of hot/ cold.
	Verify sensing element is inserted properly.
	Perform calibration only if necessary.

SENVA TECHNICAL SUPPORT

Need further assistance? Call our toll-free number for live technical support: (866) 660-8864 or feel free to email us at [email protected]

SPECIFICATIONS

Power Supply	All Models	16-30VDC/24VAC(1) , 3.5W nominal, 4W max.
Analog Outputs (Analog version only)	Quantity	Up to 3 outputs
	Source	CO2, RH%, Temp, PM, TVOC (selectable)
	Scale	0-5V, 0-10V, 4-20mA (switch selectable, programmable per output)
Protocol Output	Protocol	BACnet MS/TP or Modbus RTU
	Connection	3-wire RS-485, with isolated ground
	Data Rate	9600, 19200, 38400, 57600, 76800, 115200 (switch selectable)
	Address Range	0-127
Relay Set-point	Type	Solid-state output, 1A @ 30VAC/DC, N.O.
	Source	CO2 setpoint, RH setpoint, Temp setpoint, TVOC setpoint, air quality, off (selectable)
	Polarity	NO/NC (selectable)
	Type	Non-dispersive Infrared (NDIR) ±(30ppm + 3% of reading) (400-2000ppm), -10-50ºC, 0-85%RH
CO2 (optional)	Accuracy (Standard)	±(50ppm+ 5% of reading) (2000-5000ppm), -10-50ºC, 0-85%RH >5000ppm consult factory
	Accuracy (Dual)	±(30ppm+3% of reading) (0-2000ppm), @ 0-50C ±(50ppm+3% of reading) (2000-5000ppm), @ -10-50C ±(100ppm+10% of reading) (5000-10000ppm), @ 0-50C
	Drift with ABC disabled (Standard)	35ppm/month
	Drift with ABC disabled (Dual Channel)	5ppm/month
	Resolution	1 ppm
	Range	0-2000 PPM (Default) (Programmable up to 10,000 PPM)
	Response time	90 seconds to 90% reading
	Sample rate	1s
	Temp and Pressure	Compensated. Barometric pressure also readable over communications
Relative Humidity (optional)	Type	Digital CMOS
	Accuracy(2)	±2% over 0 to 80%RH range
	Resolution	0.05%RH
	Response time (3)	30s
	Sample rate	3s
	Operating range	0 to 100%RH (non-condensing)
	Operating conditions (4)	41 to 140° F (5 to 60° C) @ 20% to 80% RH
	Type	Silicon Band-gap
Temperature Transmitter (optional)	Nominal Accuracy	±0.3° C (operating range)
	Maximum Accuracy (2)	±0.5° C (at 25° C), ±1.0° C
	Resolution	0.01° C
	Response time	30s
	Sample rate	3s
TVOC (optional)	Type	MOS
	Gas	Total VOC
	Range	0-10,000 μg/m3
	Response Time	<10s
	Output	0-2000 μg/m3 (default) Programmable up to 10,000 μg/m3
PMx (optional) CLASS 1 LASER PRODUCT	Type	Optical
	Size Range	PM1.0, PM2.5, PM4.0, PM10.0
	Scale	0-1000 μg/m3
	Lower detection limit	0.3 μm
	Precision	±10 μg/m3 (0-100μg/m3); ±10% (100-1000 μg/m3)
Operating Environment	Temperature	-4 to 122oF (-20 to 50oC)
Operating Environment	Humidity	0-95% non-condensing
Enclosure	Material	ABS Plastic
Enclosure	Dimensions	4.0”h x 4.4”w x 2.1”d (AQD: +6.8” probe) (AQO: +2.8” solar shield)
Compliance	Agency	CE, RoHS

One side of transformer, secondary is connected to signal common.
Models with PM sensor included achieve ±3% accuracy over 0 to 80%RH range and an additional temperature shift of up +0.5° C
Time for reaching 63% of reading at 25° C and 1 m/s airflow
Long term exposures to conditions outside normal range at high humidity may temporarily offset the RH reading (+3%RH after 60 hours.)Issued 5/11/22 Document #152-0413-0A