USER GUIDE FOR SIGFOX-READY PRECISION FUEL LEVEL SENSOR WSSFC-CAP10

THIS IS OBSOLETE MANUAL

Please access https://www.iot.daviteq.com/wireless-sensors for updated manual

WSSFC-CAP10-MN-EN-01

FEB-2022

This document is applied for the following products

SKU

WSSFC-G4F-NH3

HW Ver.

1.1

FW Ver.

1.0

Item Code

WSSFC-CAP10-8-1500

SIGFOX HIGH PRECISION CAPACITANCE FUEL LEVEL SENSOR FOR DIESEL OIL, VEGETABLE OIL, LUBRICANT, 1500MM, FIELD CUTTABLE, INTERNAL ANTENNA, TYPE AA BATTERY 1.5VDC, IP67, RC1 ZONE

WSSFC-CAP10-9-1500

SIGFOX HIGH PRECISION CAPACITANCE FUEL LEVEL SENSOR FOR DIESEL OIL, VEGETABLE OIL, LUBRICANT, 1500MM, FIELD CUTTABLE, INTERNAL ANTENNA, TYPE AA BATTERY 1.5VDC, IP67, RC2-RC4 ZONES

CAP10PROEXT0700

CAP10 PROBE EXTENSION LENGTH 700 MM

CAP10PROEXT1000

CAP10 PROBE EXTENSION LENGTH 1000 MM

CAP10PROEXT1500

CAP10 PROBE EXTENSION LENGTH 1500 MM

0. Configuration Check List

0.1 Configuration Sigfox Sensor

STEP 1: Select RC

1. Select RC zone

RC zones selection 1, 2, 4,... is RCZ1, RCZ2, RCZ4,...  (refer to section 6)

STEP 2:  Check ID and PAC

Use Modbus Configuration Cable to read the ID and PAC values

Refer to register address 8 and 10 (DEC)

STEP 3:  Configure the sensor's operating parameters

Configure parameters like cycle send data, alarm, a, b,...

Refer to the configuration section 6

STEP 4:  Add device to Backend Sigfox

refer to section 6.2 for details

STEP 5:  Installation

refer to section 9 for details

0.2 Setup Fuel Sensor

Default communication of CAP10CNR RS485:

Baudrate : 19200Data bit : 8Stop bit : 1Parity : NoneModbus Slave address : 30

See more how to configure CAP10CNR here

1. Functions Change Log

HW Ver.

FW Ver.

Release Date

Functions Change

1.1

1.0

DEC-2020

2. Introduction

WSSFC-CAP10 is a Sigfox fuel level sensor that utilizes the 10-year experience of Daviteq in digital capacitance measuring technique. It delivers high accuracy and stability with 0.1% of span. Ultra-low power design and smart firmware allow the complete Wireless and Sensor package to run on 2 x AA battery 1.5V for 2-5 years with 15 minutes updates. It can support the following regions RC1, RC2, & RC4.

Typical Applications: Monitoring fuel level and fuel consumption in fuel tanks of Genset, Boiler, Heavy equipment or machinery...

3. Specification

SENSORS SPECIFICATION:

Measurement Range (mm)

Standard Range: 700, 1000, 1500, can be extended up to 4000

Accuracy / Resolution / Repeatability

±0.1% of Span / 0.1% / ±0.1% of span

Thermal drift

< +0.03% of span per 10oC

Connector

M12 male, 4-pin, Coding A

Sensor MTBF

More than 10 years

Sensor wetted materials

Aluminum and engineering plastic

Operating Temperature Range

-40 to 85 °C

Operating Humidity Range

0-100% RH

Sensor rating

IP67, outdoor

Certification

CE-Marking per EN61236-1 (with test report)

Standard accessories

Filter footer, flange, gasket, o-ring, self-tapping screws

Sigfox SPECIFICATION:

Sigfox zones

select RC1-RC2-RC4

Antenna

Internal Antenna 2 dbi

Configuration

via Downlink or offline USB cable (PC software is supplied at free)

Battery

02 x AA Type 1.5VDC

RF Module complies to

CE, FCC, ARIB

Working temperature

-40°C..+60°C (using Energizer Lithium Ultimate AA battery)

Dimensions and Net-weight

H140xW73xD42, 250 grams (Sigfox Device only)

Housing

Polycarbonate, IP67

Mounting

Wall mount bracket

Sensor cable

2m sensor cable with M12-male connector

4. Dimensions

4.1 Dimensions of the Sigfox sensor

4.2 Dimensions of the Fuel Sensor

5. Scope of delivery

Sigfox Sensor - Bracket

Fuel Sensor

Installation tool

6. Operation Principle

Upon power on, the Sigfox node has 60 seconds to wait for off-line configuration (via cable with ModbusRTU protocol).

After that, Sigfox node will send the first message to Base station.

Then during the operation, there are 03 cases of sending data to base station:

1. When the sensor sampling time interval is reached, the Sigfox node will read the data from Input or sensor and performing the calculation. After that it will check calculated value with alarm thresholds. If the calculated was out off the threshold values (Lo or Hi), called alarm, and the number of times of alarm did not pass the limit of number of alarms, then it will send data to Base station immediately;

NOTE: Once sending the data to base station by this alarm event, the timer of sending time interval will be reset;

2. When the sending time interval is reached, it will send data to Base station immediately, regardless of value;

3. By using the magnet key, the Sigfox node can be triggered to send data to base station immediately. There will be a beep sound from the buzzer meaning the data has been sent.

EVENT

PRE-CONDITION

ACTION

LED STATUS

BUZZER STATUS

ACTIVITIES

POST-CONDITION

FORCE_DATA

Any state

Move Magnet Key to contact point of REED SWITCH.Buzzer beeps 1 time, move Magnet Key away.

Blink SKY BLUE

Beep 1 time

See FW specs

Back to previous state

PARAMETERS_UPDATE

Any state

Move Magnet Key to contact point of REED SWITCH.Buzzer beeps 1 time, hold Magnet Key 5s.Buzzer beeps 2 times.

Blink PURPLE

Beep 2 times

See FW specs

Back to previous state

NOTE:Once sending the data to base station by the magnet key, the timer of sending time interval will be reset;The shortest time interval between the two manual triggers is 15s. if shorter than 15s, there will be no data sending and you will not hear the beep sound.

the push button can only be used for the first 60 seconds after powering up.

6.1 RC technical details

The RF transmit power will be automatically set as the max value as allowed by the Zone.

Sigfox Radio Configuration (RC) defines the radio parameters in which the device shall operate: Sigfox operating frequencies, output power, spectrum access mechanism, throughput, coexistence with other radio technologies, etc.

Each radio configuration includes 4 uplink classes: 0u, 1u, 2u, and 3u.

The Sigfox network globally works within the ranges from 862 to 928 MHz. But not all RCs require such a wide range of operation.

RC1

RC2

RC3

RC4

RC5

RC6

RC7

Uplink center frequency (MHz)

868.130

902.200

923.200

920.800

923.300

865.200

868.800

Downlink center frequency (MHz)

869.525

905.200

922.200

922.300

922.300

866.300

869.100

Uplink data rate (bit/s)

100

600

100

600

100

100

100

Downlink data rate (bit/s)

600

600

600

600

600

600

600

Sigfox recommended EIRP (dBm)

16

24

16

24

14

16

16

Specifics

Duty cycle 1% *

Frequency hopping **

Listen Before Talk ***

Frequency hopping **

Listen Before Talk ***

Duty cycle 1% *

* Duty cycle is 1% of the time per hour (36 seconds). For an 8 to 12 bytes payload, this means 6 messages per hour, 140 per day.

** Frequency hopping: The device broadcasts each message 3 times on 3 different frequencies. Maximum On time 400 ms per channel. No new emission before 20 s.

*** Listen Before Talk: Devices must verify that the Sigfox-operated 200 kHz channel is free of any signal stronger than −80 dBm before transmitting.

Sigfox’s high limit EIRP recommendation is included in each column although regulations sometimes allow for more radiated power than the Sigfox recommendation.

Sigfox’s recommendation is set to comply with the Sigfox technological approach of:

Low current consumption

Balanced link budget between uplink and downlink communication

6.2 Add a device to the Backend Sigfox

Step 1: Log in to the sigfox backend website

Step 2: Click on Device

Step 3: Click New → Select a group

Step 4: Fill in the required information

Note: Some of our products may not have end product certification in time, to add the product to Backend Sigfox please follow the steps below.

Click on the text as shown below

Check the box as shown below to register as a prototype

6.3 Measurement principle of Sigfox Sensor

When the sensor sampling time interval is reached, for example 2 minutes, the Sigfox node will wake up and switch ON the power supply to supply the energy to external sensor to start the measurement. Depends on the type and characteristic of external sensor, the sensor will take a certain time to finish the measurement.

Once reading the value, it can be scaled to any engineering value by the following formula:

Y = aX + b

Where:

X: the raw value from sensor

Y: the calculated value will be sent to Sigfox base station in the payload data.

a: constant (default value is 1)

b: constant (default value is 0)

So, if there is no user setting for a and b ==> Y = X

The Y value will be compared with Lo and Hi threshold. Please refer below the graph of alarm processing.

Here is the information about CAP10CNR

6.4 Configuration Parameters

Parameter

Description

Possible values

Default value 

HIGH_ALARM_SETPOINT

High alarm setpoint for calculated value

32-bit float

1000000000

LOW_ALARM_SETPOINT_FACTOR

Low alarm setpoint for calculated value

8-bit unsigned integerLOW_ALARM_SETPOINT = HIGH_ALARM_SETPOINT *  LOW_ALARM_SETPOINT_FACTOR / 200

0

ALARM_ENABLE

Enable/Disable ALARM event

0b0 = ALARM event is OFF0b1 = ALARM event is ON

0b0 = ALARM event is OFF

ALARM_PERIOD

Period of time to send ALARM event

0b000 = every  10min0b001 = every  30min0b010 = every 1h0b011 = every 2h0b100 = every 3h0b101 = every 6h0b110 = every 12h0b111 = every 24h

0b000 = every  10min

LED_BUZZER_ENABLE

Enable/Disable LEDs and Buzzersinteractions for action not triggered by the reed switch

0b0 = LEDs and Buzzers are OFF0b1 = LEDs and Buzzers are ON

0b1 = LEDs and Buzzers are ON

HEARTBEAT_PERIOD

Period of time to send HEARTBEAT event

0b000 = every  1h0b001 = every  6h0b010 = every 12h0b011 = every 24h (1 day)0b100 = every 48h (2 days)0b101 = every 72h (3 days)0b110 = every 120h (5 days)0b111 = every 240h (10 days)

0b011 = every 24h (1 day)

MEASURE_PERIOD

Period of time to measuresensor

0b0000 = every 1s0b0001 = every 2s0b0010 = every 5s0b0011 = every 10s0b0100 = every 20s0b0101 = every 30s0b0110 = every 1min0b0111 = every 2min0b1000 = every 5min0b1001 = every 10min0b1010 = every 20min0b1011 = every 30min0b1100 = every 1h0b1101 = every 2h0b1110 = every 3h0b1111 = every 6h

0b1100 = every 1h

TX_REPEAT

Sigfox TX repeat

0b0 = Send RF 1 time0b1 = Send RF 3 time

0b1 = Send RF 3 time

CYCLIC_DATA_PERIOD

Period of time to send CYCLIC_DATA event

0b000 = every  10min0b001 = every  30min0b010 = every 1h0b011 = every 2h0b100 = every 3h0b101 = every 6h0b110 = every 12h0b111 = every 24h

0b010 = every 1h

DEVICE_RESET

Once this parameter is set, the device shall restart once after having received the Downlink.

0b1010 = 0xA = force device resetothers = do nothing

0b0000 = do nothing

DOWNLINK_TYPE

Downlink type

4-bit unsigned integerSee Sigfox Downlink tab

0b0000

6.5 Payload Fields

Data name

Description

Encoding or Possible values

Length (in bits)

EVENT_ID

Unique ID identifying the device event

4-bit unsigned integer0 = START_UP1 = HEARTBEAT2 = PARAMETERS_UPDATE3 = FORCE_DATA4 = CYCLIC_DATA5 = ALARM

4

HW_VERSION

Indicate HW  version

4-bit unsigned integer1..15

4

FW_VERSION

Indicate FW version

8-bit unsigned integer1..255

8

LATEST_SIGFOX_DOWNLINK

Latest received and valid sigfox downlink frame= Current configuration

64-bit encoded fieldSee Sigfox Downlink tab

64

HW_ERROR

HW error

0b0 = no error0b1 = error

1

ALARM

Alarm

0b00 = no alarm0b01 = low alarm0b10 = high alarm0b11 = not used

2

BATTERY_LEVEL

Battery level

2-bit unsigned integer0..3

2

RAW_VALUE

Raw value of CAP10-RS485

16-bit unsigned integer

16

SCALED_VALUE

Scaled value of  CAP10-RS485

16-bit signed integer

16

TENTATIVE

Tentative number

8-bit unsigned integerFormula: (8-bit_Tentative +1)= real_tentative #Range: 1 to 256Accuracy: 1Example: 0b00000111 = 0x7=7=> 7+1 =>tentative # 8

8

6.6 Sigfox Uplink Frame Format

Sigfox Frame software for Sigfox Sensor

Size

START_UP

(led blink WHITE)

Payload

EVENT_ID

HW_VERSION

FW_VERSION

LATEST_SIGFOX_DOWNLINK

10.0

bits

4

4

8

64

Value

0b0000 = 0

yes

yes

yes

HEARTBEAT

(led blink GREEN)

Payload

EVENT_ID

HW_VERSION

FW_VERSION

LATEST_SIGFOX_DOWNLINK

10.0

bits

4

4

8

64

Value

0b0001 = 1

yes

yes

yes

PARAMETERS_UPDATE

(led blink PURPLE)

Payload

EVENT_ID

HW_VERSION

FW_VERSION

LATEST_SIGFOX_DOWNLINK

10.0

bits

4

4

8

64

Value

0b0010 = 2

yes

yes

yes

Size

FORCE_DATA

(led blink SKY BLUE)

Payload

EVENT_ID

HW_ ERROR

reserved

ALARM

BATTERY_LEVEL

reserved

RAW_VALUE

SCALED_VALUE

6.0

bits

4

1

3

2

2

4

16

16

Value

0b0011 = 3

yes

zeros

yes

yes

zeros

yes

yes

CYCLIC_DATA

(led blink SKY BLUE)

Payload

EVENT_ID

HW_ ERROR

reserved

ALARM

BATTERY_LEVEL

reserved

RAW_VALUE

SCALED_VALUE

TENTATIVE

7.0

bits

4

1

3

2

2

4

16

16

8

Value

0b0100 = 4

yes

zeros

yes

yes

zeros

yes

yes

yes

ALARM

(led blink RED)

Payload

EVENT_ID

HW_ ERROR

reserved

ALARM

BATTERY_LEVEL

reserved

RAW_VALUE

SCALED_VALUE

TENTATIVE

7.0

bits

4

1

3

2

2

4

16

16

8

Value

0b0101 = 5

yes

zeros

yes

yes

zeros

yes

yes

yes

6.7 Sigfox Downlink Frame Format

Sigfox Frame software for Sigfox Sensor

The Sigfox node is only able to receive max 04 downlinks a day, each downlink will be waiting in every 06 hours.

User can set the down link data in Sigfox back-end system in advance, whenever the Sigfox node connected to base stations and with downlink waiting is enable at that time (one time in 6 hours), the downlink data will be loaded to Sigfox node.

The downlink data can be any configuration parameter.

Please pay attention when send downlink data. If there was a mistake in sending wrong data, it would cause the Sigfox node not working properly and user need to configure it by offline cable!!!

Downlink Frame Format:

Size

DOWNLINK_TYPE = 0

Payload

HIGH_ALARM_SETPOINT

LOW_ALARM_SETPOINT_FACTOR

ALARM_ENABLE

ALARM_PERIOD

LED_BUZZER_ENABLE

 8.0

bits

32

8

1

3

1

Value

yes

yes

yes

yes

yes

HEARTBEAT_PERIOD

MEASURE_PERIOD

TX_REPEAT

CYCLIC_DATA_PERIOD

DEVICE_RESET

DOWNLINK_TYPE

3

4

1

3

4

4

yes

yes

yes

yes

yes

0b0000 = 0

Size

DOWNLINK_TYPE = 5

Payload

PRM_ADDRESS

PRM_LENGTH

PRM_VALUE

reserved

DOWNLINK_TYPE

 8.0

bits

8

8

16

28

4

Value

yes

0x02 = 2

yes

zeros

0b0101 = 5

Payload

PRM_ADDRESS

PRM_LENGTH

PRM_VALUE

reserved

DOWNLINK_TYPE

 8.0

bits

8

8

32

12

4

Value

yes

0x04 = 4

yes

zeros

0b0101 = 5

7. Modbus Memmap

7.1 Data table

Modbus Register (Decimal)

Modbus Register (Hex)

Function Code

# of Registers

Description

Range

Default

Format

Property

Comment

2

2

3

4

FW_VERSION

string

Read

6

6

3

2

HW_VERSION

string

Read

8

8

3

2

DEVICE_ID

hex

Read

Product ID

10

A

3

4

DEVICE_PAC

hex

Read

Product PAC

14

E

3

1

SENSOR_TYPE

1-255

uint16

Read

Sensor or Input Type

7.2 Configuration table

Modbus Register (Decimal)

Modbus Register (Hex)

Function Code

(Read)

Function Code

(Write)

# of Registers

Description

Range

Default

Format

Property

Comment

270

10E

3

16

4

CURRENT_CONFIGURATION

hex

Read/Write

274

112

3

16

1

SERVER_CONFIG

uint16

Read/Write

0: Send to Sigfox Network1: Send to Dongle

276

114

3

16

1

RADIO_CONFIG

1, 2, 4

4

uint16

Read/Write

RC zones selection 1, 2 ,4 is RCZ1, RCZ2, RCZ4

277

115

3

16

1

TX_POWER

20

int16

Read/Write

RF Tx power

278

116

3

16

2

CONSTANT_A

0.06666

float

Read/Write

Constant a for scaling measured value

280

118

3

16

2

CONSTANT_B

-1,113.33

float

Read/Write

Constant b for scaling measured value

282

11A

3

16

2

HIGH_CUT

1E+09

float

Read/Write

High cut value for calculated value

284

11C

3

16

2

LOW_CUT

0

float

Read/Write

Low cut value for calculated value

286

11E

3

16

2

SENSOR_BOOT_TIME

800

uint32

Read/Write

Boot time of sensor/input, in ms

306

132

3

16

1

CAP10_BAUD_RATE

0-1

1

uint16

Read/Write

0: 9600, 1:19200

307

133

3

16

1

CAP10_NUM_OF_SAMPLES

1-20

2

uint16

Read/Write

Number of cap10 sensor reading samples to get average

8. Offline configuration

Using the configuration cable to connect to the sensor as below picture.

Serial port configuration on computer: 9600 baud, None parity, 1 stop bit.Reading data by Function 3.Writing data by Function 16.

During connection with Modbus configuration tool, the Sigfox node will send all data in realtime: Battery, Battery level, Vref, Button status, reed switch status, PCB temperature, Measured value, alarm status.

Step to configure & check data:

NOTE: The Modbus configuration can be done in the first 60s after power up the Sigfox node. After 60s, if user can not finish the configuration, user need to reset the power of Sigfox node again, by removing battery in at least 15s.

Step 1: Install the Modbus Configurator Software in the link below

https://filerun.daviteq.com/wl/?id=yDOjE5d6kqFlGNVVlMdFg19Aad6aw0Hs

How to use the Modbus configuration software

Step 2: Plug the configuration cable to Computer via USB port;

Step 3: Open the housing;

Step 4: Plug the connector to the configuration port;

Step 5:  Import the configuration file by importing the csv file: Go to MENU: FILE / Import New / => select the file with name CONFIGURATION TEMPLATE FILE FOR SIGFOX CAP10 SENSOR FW1.0.csv (in the link below). Then click Connect;

CONFIGURATION TEMPLATE FILE FOR WSSFC-CAP10

9. Installation

9.1 Locate the good place for Radio signal

To maximize the distance of transmission, the ideal condition is Line-of-sight (LOS) between the Sigfox sensor and Base station. In real life, there may be no LOS condition. However, the Sigfox sensor still communicate with Base station, but the distance will be reduced significantly.

ATTENTION:DO NOT install the Sigfox sensor or its antenna inside a completed metallic box or housing, because RF signal can not pass through metallic wall. The housing is made from Non-metallic materials like plastic, glass, wood, leather, concrete, cement…is acceptable.

9.2 Mounting

9.2.1 Bracket installation

9.2.2 Site installation

WARNING: The sensor must be securely fixed near the measuring area.

Sigfox sensor connected to fuel sensor via M12 . connection cable

Default communication of CAP10CNR RS485:

Baudrate : 19200Data bit : 8Stop bit : 1Parity : NoneModbus Slave address : 30

Refer here for installation instructions for cap10

9.3 Battery installation

Steps for battery installation:

Step 1: Open the cover by using flat head screwdriver

Step 2: Insert 02 x AA 1.5VDC battery, please take note the poles of the battery

ATTENTION:REVERSED POLARITY OF BATTERIES IN 10 SECONDS CAN DAMAGE THE SENSOR CIRCUIT!!!

Step 3: Insert the top plastic housing and locking by L hex key

ATTENTION: When reinstalling the cover, pay attention to put the PCB edge into the middle slot of the box inside as shown below)

10. Troubleshooting

No.

Phenomena

Reason

Solutions

1

Node does not send RF to base station periodically, LED does not blink

No power supply or battery ran out

Configuration sending cycle is incorrect

Check that the battery is empty or not installed correctly

Check the power supply

Check the send cycle configuration

2

Node does not send RF to base station according to the alarm, LED does not blink

The alarm configuration is incorrect

Running out of the number of alarms set for the day

Check alarm configuration

Check the configuration for the maximum number of alarms per day

3

Node does not send RF to base station when activated by the magnetic switch, LED does not blink

Magnetic switch has malfunctioned

Or place the Magnet key not right position

Locate the correct position for magnet key

Read the status of the magnetic switch via modbus (when powering or attaching the battery) to see if the magnetic switch is working.

4

Node has blinked LED when sending RF but the base station cannot received

Out of the number of RF packages of uplink per day (140 packages / day)

Check on the base station whether the event message exceeds the number of RF packets

5

Node has sent RF but the LED does not blink

LED malfunction

Contact manufacturer

6

The measurement values from sensor do not change, keep constant values for long time

Sensor got failure

Sensor cable broken

Sensor connector is not connected firmly

Check sensor cable and connector

If the issue is still exist, please contact manufacturer for warranty or replace new sensor

7

The node does not send RF and the RF module is hot

Insert the battery in the wrong direction

Electronics got problem

Check battery polarity

8

RSSI is weak and often loses data

Distance between Node and Base station is far or there are many obstructions

Connection to Antenna problem

Check location of Sigfox node and distance to base station

Check the antenna connector in the PCB

11. Support contacts

Manufacturer

Daviteq Technologies IncNo.11 Street 2G, Nam Hung Vuong Res., An Lac Ward, Binh Tan Dist., Ho Chi Minh City, Vietnam.Tel: +84-28-6268.2523/4 (ext.122)

Email: info@daviteq.com | www.daviteq.com