SENSIT Technologies SPOD Quick guide

851 Transport Drive • Valparaiso, IN 46383 (USA)
Phone: [phone] • www.GasLeakSensors.com
OPERATION & CONFIGURATION GUIDE
READ AND UNDERSTAND INSTRUCTIONS BEFORE USE.

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CONTENTS
GENERAL IINFORMATION �������������������������������������������������������������������� 3
SENSORS INFORMATION ��������������������������������������������������������������������� 4
CELLULAR SPECIFICATIONS ������������������������������������������������������������������� 5
SENSOR EXTERIOR FEATURES (FRONT EXTERIOR) ���������������������������������� 6
SENSOR INTERIOR FEATURES (FRONT INTERIOR)����������������������������������� 7
SENSOR INTERIOR LED INDICATION ����������������������������������������������������� 8
QUICK START DEPLOYMENT GUIDE (USB CABLE & COMPUTER) �������������� 9
QUICK START DEPLOYMENT GUIDE (NO COMPUTER) ���������������������������� 10
USB OUTPUT HEADINGS AND DESCRIPTION ..........................................................11
FIELD 1 (PORT STATUS) ..........................................................................................12
FIELD 2 (TRIGGER STATUS) ....................................................................................12
FIELD 3 (ACTIVE PORT)...........................................................................................12
FIELD 4 (EVENT STATUS) ........................................................................................12
ULTRASONIC ANEMOMETER MOUNTING INSTRUCTIONS ���������������������� 13
INSTALLING (FIGURE 3) .........................................................................................13
TRIPOD SETUP AND INSTALLATION (OPTIONAL) ������������������������������������� 14
SOLAR PANEL SETUP & INSTALLATION (OPTIONAL)��������������������������������� 16
POLE MOUNT SOLAR PANEL SETUP & INSTALLATION (OPTIONAL)����������������� 17
TRIPOD SETUP & ANCHOR KIT INSTALLATION (OPTIONAL) ���������������������� 18
CANISTER VALVE CONTROLLER INSTALLATION (OPTIONAL) ��������������������� 19
USB COMMUNICATION & CONFIGURATION MODE (SENSOR) ��������������� 22
REQUIRED COMPONENTS: ...................................................................................22
SENSOR QUICKSTART INSTRUCTIONS....................................................................22
DETAILED ROOT MENU INFORMATION .................................................................23
DETAILED CELLULAR MENU INFORMATION .............................................................24
DETAILED OUTPUT MENU INFORMATION ...............................................................27
DETAILED TIME MENU INFORMATION ....................................................................27
DETAILED SYSTEM MENU INFORMATION................................................................28
DETAILED SAMPLE MENU INFORMATION................................................................29
DETAILED TRIGGER MENU INFORMATION ..............................................................30
SENSOR MAINTENANCE AND CALIBRATION ����������������������������������������� 31
SENSOR FIRMWARE UPDATE ���������������������������������������������������������������� 34
HARDWARE INSTALLATION GUIDE FOR AVR PROGRAMMER������������������ 37
HARDWARE & SOFTWARE INSTALLATION GUIDE FOR USB CABLE ���������������� 37
NOTES������������������������������������������������������������������������������������������������� 41
NOTES������������������������������������������������������������������������������������������������� 42
NOTES������������������������������������������������������������������������������������������������� 43
WARRANTY����������������������������������������������������������������������������������������� 44

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GENERAL IINFORMATION
OVERVIEW PARAMETER
Weight Base Unit: 6.75 lbs
Dimensions Fully assembled with anemometer & antenna D x W x H (6” x 8” x 16”)
Mounting Attached mounting flanges
Voltage Requirements 18V – 24V DC Charging (wired adapter or solar panel)
Current Requirements 2A max current draw when charging
Operating Runtime 3-5 days battery backup 1
Operating Temp -10°C to 50°C 2
Data Outputs • Digital wired output (3.3V TTL - USB)
• Wireless (4G IoT Cellular Included) 2
• Optional analytics on server 4
• SD card data backup 5
NOTES:
1. Battery backup time depends on run mode and frequency of transmission.
2. Limited by lithium iron phosphate charging temperature. Lower temperature operation will require
external or internal heating to maintain sufcient battery temperature for charge acceptance. Contact
the manufacturer for more information.
3. Requires SIM card and suitable data plan on AT&T or T-mobile. Verizon service is pending
4. Cloud based analytics can be developed with additional contract
5. When removing SD card to obtain data, it is recommended to power off the sensor box prior to
reinserting the SD card to avoid possible errors. If the system stops responding or any SD errors are
observed after inserting an SD card, power down the sensor and turn back on.

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SENSORS INFORMATION
OVERVIEW PARAMETER
Default PID Detection Range 10 ppb – 2 ppm1
Default PID Lamp Energy 10.6 eV2
Target PID Accuracy +/- 20 ppb min or 10%3,4
Response Time 5-10 seconds5,6
Expected Lamp Life 1 year+
NOTES:
1. VOC range reference to isobutylene. Additional PID sensors available with identical form factors if
higher concentrations are necessary.
2. Additional PID sensors available with identical form factors if different lamp energies are required.
3. Factory calibration conducted with 1ppm isobutylene and ultra zero air. This value is a target and
cannot be guaranteed for all environments.
4. PID Sensors are sensitive to high amounts of humidity and may rail at the upper output if humidity is
excessive. The SPOD contains an internal sensor heater to minimize humidity interference.
5. If the unit has been off for an extended period of time, it could take several minutes to an hour for the
PID readings to drop to normal operating conditions depending on storage conditions. This stabiliza-
tion may temporarily interfere with VOC detection.
6. Exposure to very high levels of VOCs may saturate the detector for several minutes to an hour

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CELLULAR SPECIFICATIONS
OVERVIEW PARAMETER
Network Technology 4G/2G1
Carrier AT&T and T-mobile2
Transport Layer TCP
Internet Layer IP
Application Layer HTTP and MQTT
Data Transfer Method HTTP POST or MQTT Topics
HTTP Content Type application/x-www-form-urlencoded
HTTP Body Field Identifiers &ID, &MODULE, &STAT, &DATA
MQTT Content Type JSON
MQTT Tags “deviceId”, “time”, “iodb”
Post Location Adjustable in Menu
APN Adjustable in Menu
TLS/SSL HTTPS and MQTTS with server authentication3
NOTES:
1. 4G CAT M1 and NB-IoT as well as 4G Cat 4 option
2. AT&T is default/preferred
3. Client authentication possible with additional development

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SENSOR EXTERIOR FEATURES (FRONT EXTERIOR)

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SENSOR INTERIOR FEATURES (FRONT INTERIOR)

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SENSOR INTERIOR LED INDICATION
Cellular Status: Red LED if failure, Green LED if successful
Charging Status: Green LED if Charging
Calibration Mode: Solid/Flashing Blue LED in Calibration
Sensor Status: Red LED if initialization failure (PID or Weather Station)
SD Card Status: Red LED if failure, Green LED if successful

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QUICK START DEPLOYMENT GUIDE (USB CABLE & COMPUTER)
It is recommended to use a computer and the supplied USB cable when setting up the sensor unit to verify
the operation of the sensors, system output, and cellular data connectivity (if applicable). If no cable and
computer are available, please see the next page.
Unpack the sensor unit and check for any physical damage or obstructions at the sensor openings. Open
enclosure cover and check for any loose or damaged components. Make sure all wires are securely
fastened as shown in the internal sensor view on page 7.
1. Install wireless antenna if equipped with cellular or local wireless module.
2. Hook up sample controller if applicable to the auxiliary port of the SPOD using the provided 5 pin
cable.
3. Hook up USB cable sensor and initialize terminal connection. Power on unit and verify that the SD card
was detected and initialized.
4. Verify the sensor outputs are reasonable or trending toward reasonable values keeping in mind the
stabilization time for sensors that have been powered off or exposed to high VOC concentrations.
Additionally, it may take up to 30 seconds for the ultrasonic anemometer to report valid environmental
data. For information on USB headings and eld identication, please see page 12.
5. When installing orient the weather sensor such that it is pointing North. Failure to do this will result in
arbitrary wind direction. The North direction is indicated with a notch on the ultrasonic anemometer
base. See page 15 for anemometer instructions. Never rotate the anemometer from the top or severe
damage will occur.
6. After verifying functionality remove the USB cable. If planning to run in USB mode, install a power
adapter or a solar panel for long term deployment applications. Otherwise, power cycle the SPOD,
then install a power adapter or a solar panel for long term deployment applications.

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QUICK START DEPLOYMENT GUIDE (NO COMPUTER)
Unpack the sensor unit and check for any physical damage or obstructions at the sensor openings. Open
enclosure cover and check for any loose or damaged components. Make sure all wires are securely
fastened as shown in the internal sensor view on page 7 and refer to the LEDs indicated on page 8.
1. Install wireless antenna if equipped with cellular or local wireless module.
2. Hook up sample controller if using to the auxiliary port of the SPOD using the provide 5 pin cable.
3. Power on unit. The illuminated switch should turn on. If the switch does not illuminate, inspect all wiring
connections and charge battery.
4. Verify that the SD card was detected and initialized with the SD status LEDs
5. Verify the absence of sensor errors with sensor status LED:
NORMAL STARTUP: LED solid for 5-10 seconds, brief off period followed by “Normal Flash (see
below)”
SD CARD ABSENT OR ERROR: 250 msec on/250 msec off (e.g. rapid blink on and off) after the
solid LED after pushing power button
HARDWARE ERROR: The following ash patterns are indicated for 1 minute following startup. This
blink pattern is repeated every 6 seconds and is mirrored on sensor status led inside SPOD housing.
1 blink = PID Lamp 1 > 10000 hours
2 blink = PID Sensor 1 Voltage Error
3 blink = PID Lamp 2 > 10000 hours (Only for Dual Sensor Design)
4 blink = PID Sensor 2 Voltage Error (Only for Dual Sensor Design)
5 blink = Ultrasonic Anemometer Error
6 blink = Canister Communication Error (expected canister controller but wasn’t found)
6. If HTTP or MQTT protocol is selected verify successful initialization after startup with Cellular status. If
cellular connection fails, there will be diagnostic code in the beginning. These codes will be repeated
on the cellular status led inside the enclosure. If PERIODIC protocol is used wait for required amount
of time before cellular post.
1 blink = General Error, Host Address Error
2 blink = Communication Error
3 blink = SIM card error (missing/not valid)
4 blink = Cellular Registration Error
5 blink = Data Connection Error
6 blink = No response from server
7 blink = MQTT authentication error
7. If power is hooked up, wait for 1 minute after power up to verify the charging status LED is illuminated.
Please note that if the battery is completely full the charging status LED will not illuminate.
8. When installing orient the weather sensor such that it is pointing North. Failure to do this will result in
arbitrary wind direction. The North direction is indicated with a notch on the ultrasonic anemometer
base. See page 15 for anemometer instructions. Never rotate the anemometer from the top or severe
damage will occur.

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9. After initialization is complete the illuminated switch will display the “Normal Flash” (During Opera-
tion): Double blink every ~1 second.
NOTE: Flash pattern during cellular post is more erratic and is associated with different times to send
commands and receive response. If ash pattern looks different and you are concerned, I’d recom-
mend giving the sensor 30-60 seconds and see if the double blink starts again after the cellular post
nishes.
USB OUTPUT HEADINGS AND DESCRIPTION
USB HEADING DESCRIPTION UNITS/FORMAT
SPOD Serial Number 1000-63535
DATE Local Date and Time MM/DD/YY HH:MM:SS (24H)
PID1 Field 1, Sensor 1 VOC PPB
Field 2, Sensor 1 Raw mV
PID21Field 1, Sensor 2 VOC PPB
Field 2, Sensor 2 Raw mV
T Temperature °C
RH Relative Humidity %
P Pressure mBar
WS Wind Speed mph
WD Wind Direction Degrees
TC Field 1, Sensor 1 Temp Arb Units
Field 2, Heater 1 Output 0 = Off, 255 = Fully On
Field 3, Sensor 1 Setpoint Arb Units
Field 4, Sensor 2 Temp1Arb Units
Field 5, Heater 2 Output10 = Off, 255 = Fully On
Field 5, Heater 2 Setpoint1Arb Units
BATT Battery Voltage Volt
CHRG Charging Current mA
RUN Operating Current mA
TRIG Field 1, Port Status *See Below For All Fields*
Field 2, Trigger Flag
Field 3, Active Flag
Field 4, Sample Flag
LAT2GPS Latitude Degrees
LON2GPS Longitude Degrees
CRC Checksum Data Integrity Bytes
NOTES:
1. The control circuit board is designed to support a second sensor. Additional parameters will show up
in the output if a dual sensor unit is congured by the factory.
2. GPS is not enabled on all units. Please contact Sensit to enable GPS.

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FIELD 1 (PORT STATUS)
BIT NUMBER DESCRIPTION
7 (MSB) Port 4: Collected = 1, Not Collected = 0
6 Port 3: Collected = 1, Not Collected = 0
5 Port 2: Collected = 1, Not Collected = 0
4 Port 1: Collected = 1, Not Collected = 0
3 Port 4: Installed = 1, Not Installed = 0
2 Port 3: Installed = 1, Not Installed = 0
1 Port 2: Installed = 1, Not Installed = 0
0 (LSB) Port 1: Installed = 1, Not Installed = 0
FIELD 2 (TRIGGER STATUS)
BIT NUMBER DESCRIPTION
7 (MSB) Not Used
6 Not Used
5 Not Used
4 Wind Only Trigger
3 Combo, High Wind Speed
2 Combo, Med Wind Speed
1 Combo, Low Wind Speed
0 (LSB) Threshold Trigger
FIELD 3 (ACTIVE PORT)
BIT NUMBER DESCRIPTION
7 (MSB) Not Used
6 Not Used
5 Not Used
4 Not Used
3 Port 4: On = 1, Off = 0
2 Port 3: On = 1, Off = 0
1 Port 2: On = 1, Off = 0
0 (LSB) Port 1: On = 1, Off = 0
FIELD 4 (EVENT STATUS)
BIT NUMBER DESCRIPTION
7 (MSB) Event 4: Complete = 1, Not Complete = 0
6 Event 3: Complete = 1, Not Complete = 0
5 Event 2: Complete = 1, Not Complete = 0
4 Event 1: Complete = 1, Not Complete = 0
3 Event 4: Started = 1, Not Started = 0
2 Event 3: Started = 1, Not Started = 0
1 Event 2: Started = 1, Not Started = 0
0 (LSB) Event 1: Started = 1, Not Started = 0

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ULTRASONIC ANEMOMETER MOUNTING INSTRUCTIONS
INSTALLING (FIGURE 3)
CAUTION: The reflector plate and the waterproof film found in the wind channel of the WeatherStation
Instrument are essential to its operation. Be careful not to scratch the plate, puncture the film, or damage
them in any way.
CAUTION: The WeatherStation Instrument must be installed upright and vertical, not tilted to one side.
It must be level and plumb. If the WeatherStation Instrument is tilted from the horizontal plane, it may
introduce errors in the compass and wind readings.
CAUTION: To accurately measure the wind direction and heacing, the alignment notch on the
WeatherStation Instrument must be pointed correctly.
• Moving vehicle/boat-The alignment notch must point forward and be parallel to the centerline of the
vehicle/boat.
• Stationary surface-It is recommended that the alignment notch point toward true north
CAUTION: Tighten or align the WeatherStation Instrument by grasping the lower housing below the
reflector plate. Hand tighten only.
• Do not rotate the cap. Turning It may sever internal connections and void the warranty.
• 1 lOWXS, 150WXRS, 150WXS-Oo not grasp the solar-radiation shield. The louvers may break.
CAUTION: If you use a thread lock, use Teflon pipe-thread tape. Do not use a liquid thread lock as it may
weaken the plastic, causing it to swell and crack.

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TRIPOD SETUP AND INSTALLATION (OPTIONAL)
1. Remove protective rubber feet if installing outdoors
2. Install pole on tripod. Pole mounting attachment may differ from image below.
3. Set leg height of tripod and spread legs with a minimum of 30° from perpendicular
4. For added stability in high wind or long-term deployments place sandbags against all legs and step
in feet down into the soil.
Catch tab with
bag to hold down

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5. Use the shorter ¼” long screw to attach pole mount to back of SPOD
6. Use the longer 1 ¼” long screw + nut to tighten on pole
7. Tighten sufciently to prevent rotation
8. Place SPOD as far up as possible on pole to avoid blocking anemometer
NOTE: The images below are used for reference. SPOD appearance will differ slightly from image
below.

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SOLAR PANEL SETUP & INSTALLATION (OPTIONAL)
1. Lift up on side with 2 knobs to unfold panel
2. Fold down angular supports on both sides and remove 2 knobs on bottom
3. Reattach knobs vertical angular supports on both sides (at washer, lock washer, wing nut)
4. Place solar panel on ground and fasten to ground or add ballast if possible (recommended to avoid
wind damage and theft)
5. Avoid shadowing on panel as much as possible as this will drastically reduce panel output power and
efciency
6. Route cable to SPOD unit
7. Plug cable into SPOD “Power/USB” connection
8. Power on SPOD unit
NOTE: Alternative solar mounts and solar panel extension cables can be purchased from Sensit. Please
contact Sensit for more information if your application requires an alternative solar mounting setup.

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POLE MOUNT SOLAR PANEL SETUP & INSTALLATION (OPTIONAL)
1. Place solar panel on tripod leg or other suitable pole.
2. To place on tripod open worm gear clamps and install as shown
below. Note that desired tripod height should be set prior to fully
tightening worm gear clamp as adjustments are difcult after the
clamp is tightened.
3. Lift panel mount up to keep panel off the ground. If high weeds or
deep snow are present consider increasing height off the ground.
4. Adjust angle according to season and latitude or if heavy snowfall
is anticipated. To adjust angle, loosen the 4 bolt until the panel can
tilt up and down freely. After the correct angle is set, tighten the 4
bolts fully.
5. Avoid shadowing on panel as much as possible as this will drastically reduce panel output power and
efciency
6. Route cable to SPOD unit
7. Plug cable into SPOD “Power/USB” connection
8. Power on SPOD unit

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TRIPOD SETUP & ANCHOR KIT INSTALLATION (OPTIONAL)
1. Adjust tripod to desired height by ipping up red lever and pulling out legs to desired height. The op-
timal angle for tripod stability is in the range of 60-65 degrees with respect to the ground
2. Remove protective rubber feet from tripod legs
3. Step feet into the ground fully. If setting up a tripod on a hard surface
and the legs cannot be stepped into the ground it is necessary to use
weights (e.g. sandbags, blocks, etc) to prevent the legs from moving
or tipping over. SENSIT is not liable for damage due to improper
tripod mounting.
4. Screw in earth anchor in the center of tripod footprint and thread ratcheting rope through anchor as
shown. The 2 metal hooks should attach to tripod legs as shown and a loop of rope should go around
the remaining leg passing through the eyelet at top of anchor.

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CANISTER VALVE CONTROLLER INSTALLATION (OPTIONAL)
The SPOD Canister Valve Controller (CVC) allows the independent or concurrent actuation of up to 4
latching solenoid valves.
1. To use the canister valve controller, hook the valve controller power and TTL comm port up to the aux-
iliary port of the SPOD.
2. Hook any valves and pressure sensors up to the valve/pressure ports.
3. Power on SPOD and congure sampler as described in the USB conguration settings. Please note that
when enabling sampling for the rst time, the user must power cycle before attempting to congure
the sampler parameters.
4. The canister valve controller features 4 status indicators for the ports. The color indicates the status.

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LED COLOR DESCRIPTION
BLUE Not Enabled
GREEN Enabled and Not Collected
RED Enabled and Collected
RED-GREEN-BLUE Currently Collecting Sample
5. The canister valve controller features 4 local buttons for control and testing. The button behavior will
depend on the status of port. When the button is pushed, the LED begins to ash RED-GREEN-RED-
GREEN. Continue to hold the button until the status LED shows BLUE. Release button and change will
occur.
CANISTER STATUS ACTION
(B) NOT ENABLED No Action
(G) ENABLED AND NOT COLLECTED Open Valve
(R) ENABLED AND COLLECTED Reset Collection Status (Swap Canister)
(RGB) CURRENTLY COLLECTING Close Valve
6. The conguration of the canister valve hardware is up to the operator. Example setups are discussed
here. The CVC can be used with up to 4 cans. The canisters can be connected with manifolds to share
a single sampler. This is especially useful when using expensive time integrated samplers. The mani-
fold dead space is negligible when using a 6L can and larger but becomes signicant for smaller can
sizes.