Sensit technologies Sensit-it ramp User manual

851 Transport Drive • Valparaiso, IN 46383 (USA)

Phone: 219.465.2700 • www.GasLeakSensors.com

OPERATION & CONFIGUATION GUIDE

READ AND UNDERSTAND INSTRUCTIONS BEFORE USE.

2

CONTENTS

RAMP SENSOR OVERVIEW & SPECIFICATIONS �� 3

GENERAL ............................................................................................................. 3

SENSORS �� 4

SENSOR EXTERIOR FEATURES (FRONT EXTERIOR) �� 5

SENSOR EXTERIOR FEATURES (BACK SIDE EXTERIOR) �� 6

SENSOR EXTERIOR FEATURES (LEFT SIDE EXTERIOR) �� 7

SENSOR EXTERIOR FEATURES (RIGHT SIDE EXTERIOR) �� 7

SENSOR EXTERIOR FEATURES (BOTTOM EXTERIOR) �� 7

SENSOR FEATURES (FRONT INTERIOR) �� 8

QUICK START DEPLOYMENT GUIDE ........................................................................ 8

STAT = HEX1, HEX2, HEX3, (EXTENDED INFO)......................................................... 9

USB COMMUNICATION & CONFIGURATION MODE (SENSOR) �� 10

REQUIRED COMPONENTS: ................................................................................... 10

SENSOR QUICKSTART INSTRUCTIONS ................................................................... 10

HARDWARE AND SOFTWARE INSTALLATION GUIDE�� 12

NOTES �� 16

NOTES �� 17

WARRANTY�� 20

3

RAMP SENSOR OVERVIEW & SPECIFICATIONS

GENERAL

OVERVIEW PARAMETER

Weight Base unit: 7.5 lbs

Dimensions Fully assembled without anemometer or antenna1

D x W x H (5” x 10” x 12”)

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 3-15 days battery backup2

Operating Temp -20°C to 50°C

Data Outputs • Digital wired output (3.3V TTL - USB)

• Wireless (3G Cellular Included)3

• Optional analytics on server4

• SD card data backup5

NOTES:

1. The anemometer is to be mounted separate to a pole. Could be same pole as sensor.

2. Battery backup time depends on run mode and frequency of transmission.

3. Requires SIM card and suitable data plan on AT&T or T-Mobile

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 rein-

serting the SD card to avoid possible errors. If the system stops responding after inserting an SD card,

power down the sensor and turn back on.

4

SENSORS

OVERVIEW PARAMETER

CO Detection Range 100 ppb – 25 ppm

CO Accuracy +/- 100 ppb min or 20%

NO Detection Range 20 ppb – 25 ppm

NO Accuracy +/- 20 ppb min or 20%

NO2Detection Range 20 ppb – 25 ppm

NO2Accuracy +/- 20 ppb min or 20%

O3Detection Range 20 ppb – 25 ppm

O3Accuracy +/- 40 ppb min or 50%

CO, NO, NO2, O3Response Times 60-90 seconds 1

CO, NO, NO2, O3Detection Method Electrochemical

CO2Detection Threshold 100-2000 ppm2

CO2Accuracy +/- 200 ppm min or 20%

CO2Response Time 15-30 seconds

CO2Detection Method NDIR Optical

PM2.5 Detection Threshold 1 - 1000 μg /m3

PM2.5 Accuracy +/- 10 μg /m3min or 50%

PM2.5 Response Time 15-30 seconds

PM2.5 Detection Method Laser Scattering

Periodic Maintenance Periodic cleaning of sensor openings of dust, zero

point calibration, and single point calibration.

User replacement of sensors is easily performed as

needed.

Additional Included Sensors Additional sensors can be added (external ports)3

NOTES:

1. If the unit has been off for an extended period of time, it will take approximately 12-24 hours for the

electrochemical sensors to stabilize completely.

2. There are additional CO2sensors available with identical form factors if higher concentrations (e.g.

10,000 ppm) are determined to be necessary.

3. The anemometer that is designed to work with the RAMP is the Davis Vantage Pro 2 Anemometer

(https://www.davisinstruments.com/product/anemometer-for-vantage-pro2-vantage-pro/)

5

SENSOR EXTERIOR FEATURES (FRONT EXTERIOR)

Front View

Antenna

Top Side

Left Side Right Side

Bottom Side

6

SENSOR EXTERIOR FEATURES (BACK SIDE EXTERIOR)

Back Side

Antenna

Mounting

Holes

7

SENSOR EXTERIOR FEATURES (LEFT SIDE EXTERIOR)

SENSOR EXTERIOR FEATURES (RIGHT SIDE EXTERIOR)

SENSOR EXTERIOR FEATURES (BOTTOM EXTERIOR)

NOTE: Do not obstruct sensor openings. User must install sensor enclosure with sensor openings facing

downward to avoid water and debris accumulation.

Left View

Antenna

Right View

Power Switch

USB/Power

Port

Auxiliary Device Ports

Vent for PM2.5 Sensor

PM2.5 Sensor

(Vent Not Shown)

CO2Sensor

Electrochemical Sensors

Port 1

Anemometer

8

SENSOR FEATURES (FRONT INTERIOR)

QUICK START DEPLOYMENT GUIDE

It is recommend 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).

1. 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.

2. Hook up USB cable sensor and initialize terminal connection. Power on unit and verify that the SD card

was detected and initialized.

3. Enter into USB mode from startup or from conguration menu. Verify the sensor outputs are reasonable

or trending toward reasonable values keeping in mind the stabilization time for the electrochemical

sensors. The output format is shown below:

HEADING DESCRIPTION UNITS/FORMAT

DATE Local Date and Time MM/DD/YY HH:MM:SS (24H)

CO CO PPB

NO/SO21NO/SO2PPB

NO2 NO2PPB

O3 O3PPB

CO2 CO2PPM

T Temperature °C

9

RH Relative Humidity %

PM1 PM1.0 μg /m3

PM2.5 PM2.5 μg /m3

PM10 PM10 μg /m3

Port 1 2External Module Appears only if attached

Port 2 2External Module Appears only if attached

Port 3 2External Module Appears only if attached

Port 4 2External Module Appears only if attached

WD Wind Dir Degrees from North

WS Wind Speed Mph

BATT Battery Voltage Volts (4.2 - 3.4V)

CHRG Charging Current mA

RUN Run Current mA

SD SD Status (1 – OK, 0 – refer to STAT)

RAW Raw sensor signals CO, NO/SO2, NO2, O3

STAT System Information *See Below*

4. The heading ‘STAT’ contains diagnostic information detailed below:

STAT = HEX1, HEX2, HEX3, (EXTENDED INFO)

HEX1 BIT DESCRIPTION

0 SD Init Status (0 – Init Failure, 1 – Init Success)

1 SD Card Presence (0 – Not Installed, 1 – Installed)

2 SD Write Status (0 – No Error, 1 – Write Error)

3 Temp Flag (1 – Normal, 0 – Low Temp)

4 Charge Status (0 – Charge On, 1 – Charge Off)

5 CO2 Connection Status (0 – Not Installed, 1 – Installed)

6 PTR 1 Connection Status (0 – Not Installed, 1 – Installed)

7Always Zero

HEX2 BIT DESCRIPTION

0 CO Read Error (0 – OK, 1 – Error)

1 NO/SO2 Read Error (0 – OK, 1 – Error)

2 NO2 Read Error (0 – OK, 1 – Error)

3 O3 Read Error (0 – OK, 1 – Error)

4 Port 1 Connection Status (0 – Not Installed, 1 – Installed)

5 Port 2 Connection Status (0 – Not Installed, 1 – Installed)

6 Port 3 Connection Status (0 – Not Installed, 1 – Installed)

7 Port 4 Connection Status (0 – Not Installed, 1 – Installed)

HEX3 BIT DESCRIPTION

0 Port 1 Power Status (0 – Power Off, 1 – Power On)

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1 Port 2 Power Status (0 – Power Off, 1 – Power On)

2 Port 3 Power Status (0 – Power Off, 1 – Power On)

3 Port 4 Power Status (0 – Power Off, 1 – Power On)

4 Port 1 Fault Status (0 – No Fault, 1 – Fault)

5 Port 2 Fault Status (0 – No Fault, 1 – Fault)

6 Port 3 Fault Status (0 – No Fault, 1 – Fault)

7 Port 4 Fault Status (0 – No Fault, 1 – Fault)

5. If operating with a weather station, orient the weather sensor such that it is pointing North. Failure to

do this will result in arbitrary wind direction.

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 RAMP,

then install a power adapter or a solar panel for long term deployment applications.

NOTES:

1. Position 2 is designated for either an NO or SO2 electrochemical sensor

2. The Heading for the ports will be specic to the device that is connected not ‘Port #’

USB COMMUNICATION & CONFIGURATION MODE (SENSOR)

The RAMP sensors allow for the reconfiguration of several parameters pertaining to the operation of

system. Adjustment of these parameters is only accessible for a short period of time after powering on the

sensor (~10s). These parameters are stored in non-volatile memory and are retained during subsequent

power cycling. Documentation of these parameters is listed below.

REQUIRED COMPONENTS:

• Sensor

• USB data cable

• Computer with a serial port terminal software program (e.g. CoolTerm)

SENSOR QUICKSTART INSTRUCTIONS

1. Connect the USB cable to the RAMP and computer and establish the communication link in the termi-

nal software.

2. Turn on power switch and observe initialization process. After initializing the microcontroller and

printing RAMP information, the system will system will prompt the user to: “Enter Conguration Mode?

(YES)” or “Enter Calibration (USB) Mode? (CAL)”

3. Conguration mode allows access to conguration settings and system settings. To enter conguration

mode type Yes at the prompt and hit enter.

The menus are all text-based and easy to follow. The following list contains all the adjustable within the

menu:

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MENU ITEM DESCRIPTION LOCATION

CONFIG Common settings Root Menu

DISPLAY Prints device settings Root Menu

LOG Allows user to save message Root Menu

SYSTEM System settings Root Menu

APN Cellular Data APN Config Menu

FILTER ECHEM Filter Settings Config Menu

PM PM Device Settings Config Menu

IDNUM Device ID Number Config Menu

INTERVAL Output Interval Config Menu

RATIO Points Between Cell Post Config Menu

SERVER Server Address for Cell Config Menu

TIME System Time Config Menu

AUTORANGE Automatic ADC Selection System Menu

AUTOTIME Automatic Cell Time Sync System Menu

DEBUG Enable verbose USB Output System Menu

DEFAULT Reset all settings System Menu

ECHEM Sensor Parameters System Menu

ECHEMPARAM Display echem parameters System Menu

OFFSET Offset and slope settings System Menu

OFFSETPARAM Display offset/slope System Menu

GSM GSM Test and Info System Menu

SIGNAL Cell signal acquire and test System Menu

USB Toggle remote/local mode System Menu

WIND Wind sensor settings System Menu

NOTE: With the exception of DEBUG option, all changes made within menu are stored in NVRAM and

will be retained on power cycling

4. Calibration mode allows the user to observe a continuous sensor output as well as calibrate the zero

and slope of the following sensors: CO, NO, NO2, O3,CO2, PM2.5 reading. Calibration mode

is temporary and will be lost upon a system power cycle. To enter calibration mode type Cal at the

prompt.

• To set new zero level expose the sensor to zero air and type the following: CO:zero, NO:zero,

NO2:zero, O3:zero, CO2:zero, or PM25:zero

• To calibrate the sensor to a known level of target gas replace ‘zero’ with the actual ppb reading for

CO, the actual ppm reading for CO2, or the μg /m3 reading for PM2.5

(e.g. CO:10000 would calibrate to 10000 ppb CO, CO2:1500 would calibrate 1500 ppm CO2,

or PM25:20 would calibrate 20 μg /m3 )

NOTE: Please allow 1-2 outputs for the sensor reading to update.

12

HARDWARE AND SOFTWARE INSTALLATION GUIDE

1. Download drivers for FTDI Serial Adapter and install drivers http://www.ftdichip.com/Drivers/VCP.

htm

2. Open serial terminal program of your choice. CoolTerm is recommended and instructions for using

CoolTerm are found below. CoolTerm is available for Windows, Mac, and Linux. CoolTerm can be

downloaded for free from here: http://freeware.the-meiers.org/

1. Extract ‘Software_CoolTerm’ to the directory of your choosing. To avoid certain permissions

issues do not extract into “Program Files”. It is recommended to extract to the desktop if possible.

2. Open the ‘CoolTerm’ application. You may receive an error indicating that no serial ports are

found depending on what is hooked up to the computer. Click okay to continue.

3. Click ‘Options’ as shown below

a. ‘Serial Port’ options should open by default. If not, select Serial Port options from the list of

available options as shown below. All default options should be correct but please verify. Click

on ‘Port’ dropdown list and make note of any available ports. Plug in the USB cable and wait for

hardware installation to finish. Click “Re-Scan Serial Ports”. The newly added port is the USB

cable. Select this port.

13

HARDWARE AND SOFTWARE INSTALLATION GUIDE

1. Download drivers for FTDI Serial Adapter and install drivers http://www.ftdichip.com/Drivers/VCP.

htm

2. Open serial terminal program of your choice. CoolTerm is recommended and instructions for using

CoolTerm are found below. CoolTerm is available for Windows, Mac, and Linux. CoolTerm can be

downloaded for free from here: http://freeware.the-meiers.org/

1. Extract ‘Software_CoolTerm’ to the directory of your choosing. To avoid certain permissions

issues do not extract into “Program Files”. It is recommended to extract to the desktop if possible.

2. Open the ‘CoolTerm’ application. You may receive an error indicating that no serial ports are

found depending on what is hooked up to the computer. Click okay to continue.

3. Click ‘Options’ as shown below

a. ‘Serial Port’ options should open by default. If not, select Serial Port options from the list of

available options as shown below. All default options should be correct but please verify. Click

on ‘Port’ dropdown list and make note of any available ports. Plug in the USB cable and wait for

hardware installation to finish. Click “Re-Scan Serial Ports”. The newly added port is the USB

cable. Select this port.

b. Select ‘Terminal’ options from list of available options and select ‘Line Mode’ as shown below.

Line mode adds a text entry bar at the bottom of the screen that is useful for sending commands

to the connectedsensor.

14

c. Select ‘Receive’ options from list of available options and check “Ignore Receive Signal Errors”.

Selecting this option reduces the possibility of the serial connection closing upon a received

serial error such as connecting or disconnecting the cable or power cycling the unit.

4. To avoid having to congure the terminal every time you open it, you have 2 options to save the con-

guration as shown in Figure 4.

a. Click “Save As” and save the connection settings as a file that you can share or store on the

computer

b. Click “Save As Default” to change these settings to the default settings when starting the program.

If you are running off the CD this option will give you an error as there is no default file.

15

5. Coolterm can be congured to record all data received over serial. This will be useful for evaluation

purposes. a. To start a capture go to ‘Connection’ dropdown menu  Capture to Textle Start or

hit Ctrl-R ((⌘-R). Enter a le name and click save. b. To stop the capture navigate back to the menu

entry and click stop or hit Ctrl-Shift-R ((⌘-Shift-R)

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NOTES

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17

NOTES

__________________________________________________________________________________________

18

NOTES

__________________________________________________________________________________________

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NOTES

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851 Transport Drive

Valparaiso, IN 46383-8432

Phone: 219.465.2700

Toll Free: 888.4.SENSIT (473.6748)

Fax: 219.465.2701

Email: info@gasleaksensors.com

Website: www.GasLeakSensors.com

MADE IN THE USA

WITH GLOBALLY SOURCED COMPONENTS

SENSIT®SPOD Operation Manual & Con iguration Guide

Part Number: 750-00084

Version 1.1, April 2020

WARRANTY

Your SENSIT®RAMP is warranted to be free from defects in materials and workmanship for a period of

two years after purchase. If within the warranty period the instrument should become inoperative from such

defects the instrument will be repaired or replaced at our option. This warranty covers normal use and does

not cover damage which occurs in shipment or failure which results from alteration, tampering, accident,

misuse, abuse, neglect or improper maintenance. Proof of purchase may be required before warranty is

rendered. Units out of warranty will be repaired for a service charge. Internal repair or maintenance must

be performed by a Sensit Technologies authorized technician. Violation will void the warranty. Units must

be returned postpaid, insured and to the attention of the service department for warranty or repair.

This warranty gives you specific legal rights and you may have other rights which vary from state to state.

SENSIT Technologies SENSIT-IT RAMP User manual

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