USER GUIDE FOR EX D APPROVED SIGFOX READER FOR ELECTRONIC VOLUME CORRECTOR WSSFCEX-EVC

THIS IS OBSOLETE MANUAL

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

WSSFCEX-EVC -MN-EN-01

MAY-2021

This document is applied for the following products

SKU	WSSFCEX-EVC	HW Ver.	1.2	FW Ver.	1.2
Item Code	WSSFCEX-EVC-9-MINI-MAX-Z1	SIGFOX MERCURY EVC MINI-MAX READER, ATEX EXD APPROVAL ZONE 1/2, M20 CABLE GLAND WITH 10M SHIELDED CABLE AND AMP CONNECTOR, IP67 CAST ALUMINUM HOUSING, TYPE AA BATTERY 1.5VDC, RC2-RC3-RC4-RC5 ZONES
	WSSFCEX-EVC-8-MINI-MAX-Z1	SIGFOX MERCURY EVC MINI-MAX READER, ATEX EXD APPROVAL ZONE 1/2, M20 CABLE GLAND WITH 10M SHIELDED CABLE AND AMP CONNECTOR, IP67 CAST ALUMINUM HOUSING, TYPE AA BATTERY 1.5VDC, RC1-RC6-RC7 ZONES

1. Functions Change Log

HW Ver.	FW Ver.	Release Date	Functions Change
1.2	1.2	SEP-2020

2. Introduction

WSSFCEX-EVC is the Sigfox reader to read process data from Electronics Volume Corrector (EVC) with Exd approval for installation in Zone 1, Zone 2 or Safe Zone, and it can connect to any EVC with Modbus RTU communication or Mercury proprietary protocol. It will automatically read those parameters from EVC: corrected volume, un-corrected volume, gas pressure, gas temperature...With Ultra-low-power design and smart firmware allow the Sigfox device can last up to 10 years with single 2 x AA batteries (depends on configuration). It can supports all regions of Sigfox network in over the World, RC1, RC2, RC3, RC4, RC5, RC6, RC7. Typical applications are monitoring of Gas metering skids, Gas metering system for Natural Gas, LNG, CNG...

3. Specification

Type of EVC to connect	Connect to any Electronic Volume Corrector with Modbus RTU or Mercury protocol
Connector	Standard is AMP connector to work with Mercury Mini-Max EVC, for other EVC pls specify when ordering
Cable length	10m shielded cable
Sigfox zones	select RC2-RC3-RC4-RC5 or RC1-RC6-RC7
Antenna	N-male type external Antenna
Battery	02 x AA Type 1.5VDC, working time up to 10 years (depends on configuration)
ATEX Certificates	IMQ 14 ATEX 005 X and TÜV CY 18 ATEX 0206158 X
Marking	ATEX II 2G Ex db IIC T5/T6 Gb and ATEX II 2D Ex tb IIIC T100/T85°C Db
Directive	ATEX 2014/34/EU
Standards	IEC-EN60079-0 IEC-EN60079-1 IEC-EN60079-31
Applicable zones	Zone 1 - 21 (gas) and Zone 2 - 22 (dust)
Ambient working temperature	-40°C..+85°C
Housing	Cast aluminium, powder coated, IP66
Mounting	wall mounting holes
Product dimensions	H210xW100XD72
Net weight	1.5 kgs
Packaging dimension	W160 x D150 x H250 mm
Gross weight	< 1.6 kgs

4. Dimensions

5. 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.

   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.

5.1 LED meaning

• RC1: RED colour
• RC2: GREEN colour
• RC4: BLUE colour

5.2 Button Function

5.2.1 Menu configuration

There are 3 configuration menus: tx_repeat, downlink_flag, radio configuration.

We use the button to enter the menus as follows:

5.2.1.1 tx_repeat

Press and hold the button 2s  ->  When the Red LED is on, it means entering the tx_repeat configuration menu. Then release to configure it.

Press to configure. After pressing if the Red LED flashes once, tx_repeat = 0 (send 1 time). After pressing if the Red LED blinks twice, it is tx_repeat = 1 (send 3 times).

5.2.1.1 downlink_flag

Press and hold the button 5s  ->  When the Green LED is on, it means entering the downlink_flag configuration menu. Then release to configure it.

Press to configure. After pressing if the Green LED flashes once, it is downlink_flag = 0 (downlink is not allowed). After pressing if the Red LED blinks twice, it is downlink_flag = 1 (downlink is allowed).

5.2.1.1 radio configuration

Press and hold the button 10s  ->  Blue LED is on, it means entering the Radio Configuration menu. Then release to configure it.

Press to configure. After pressing if the Blue LED blinks once, it is Radio Configuration = 1. After pressing if the Blue LED flashes twice, it is Radio Configuration = 2. After pressing if the Blue LED flashes 4 times, it is Radio Configuration = 4.

5.2.2 Exit the menu:

There are 3 ways to exit the menu:

• Press and hold for 3s, the LED turns off to exit the menu;
• Wait 30 seconds, then exit the menu;
• Take out the battery, it all starts over (outside the menu)).

5.3 RC technical details

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:

5.4 Payload Data

The following is the format of payload data will be sent to Sigfox server.

5.4.1 Payload data 12 bytes sent hourly

Sensor type (1 byte)

Status + Interval Avg Pressure + Interval Avg Temperature (3 bytes)

Corrected Volume (4 bytes)

Uncorrected Volume (4 bytes)

FOR EXAMPLE

Raw data: 0x16819FF60156C78600238415

Explain:

• Sesor type : 0x16
• Status + Interval Avg Pressure + Interval Avg Temperature : 0x819FF6 = 0b100000011001111111110110
  • • Status battery level : 0b10 battery level 3 (60%)
    • Status error : 0b00 Node status no error
    • Interval Avg Pressure : 0b0001100111 = 103 => Interval Avg Pressure = 10.3 (bar)
    • Interval Avg Temperature : 0b1111110110 = 1014 => Interval Avg Temperature = 101.4 (℃)
• Corrected Volume : 0x0156C786 = 22464390
  
• Uncorrected Volume : 0x00238415 = 02327573

5.4.2 Payload battery packet sent daily 4 bytes

Sensor type (1 byte)

Status (1 byte)

Battery Voltage  (2 bytes)

Meaning of Data in the Payload

Data	Size	Bit	Format	Meaning
Sensor type	1 byte	all	Uint8	Sensor type = 0x16 means Sigfox Node with EVC sensor type = 0xFF means no sensor.
Status: battery level	2 bits	Bit 7 and 6		Battery capacity in 04 levels 11: battery level 4 (99%) 10: battery level 3 (60%) 01: battery level 2 (30%) 00: battery level 1 (10%)
Status: error	2 bits	Bit 5 and 4		Node status 01: error 00: no error
Status : reserved	4 bits	Bit 3 to 0		0000
Battery Voltage (V)	2 bytes	all	Uint16	X Real Battery Voltage of EVC = X Real Battery Voltage of EVC / 100

FOR EXAMPLE 

Raw data: 0x16800252

Explain:

• Sesor type : 0x16
• Status : 0x80 = 0b10000000

  • • Status battery level : 0b10 battery level 3 (60%)

    • Status error : 0b00 Node status no error

    • Status reserved : 0000
• Battery Voltage : 0x0252 = 594 => Battery Voltage = 5.94 (V)

5.4.3 Payload for downlink

Length is 8 bytes

Prm_adr (1 byte)

Prm_len (1 byte)

Prm_value (6 bytes)

Prm_name	Prm_adr	Prm_len	Comment
cycle_send_data	18	4

6. Configuration

DANGER:

DO NOT OPEN THE COVER AT HAZARDOUS LOCATION!

ONLY OPEN COVER FOR TROUBLE SHOOTING AND CONFIGURATION IN SAFE AREA!

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=qK0PGNbY1g1fuxTqbFW9SXtEvCw7bpc6

How to use the Modbus configuration software 

Step 2: Plug the configuration cable to computer via USB port and install the driver;

Step 3: Open the housing;

Step 4: Plug the connector to the configuration port;

Red	Tx
Black	Rx
Yellow	GND

Tx on cable will go with Rx on sensor and vice versa.

Step 5: Insert the battery;

ATTENTION:

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

Step 6:  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 FW1.9.3.csv (in the link below). Then click Connect;

CONFIGURATION TEMPLATE FILE FOR SIGFOX WSSFCEX-EVC.csv

7. Installation

7.1 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.

WARNINGS:

Prepare the professional tools for installation. The inappropriate tools may cause damage to the sensor.

DANGER:

1. The installer need to be equipped with full Safety gears during installation, such as safety glasses, safety shoes, safety cloths, safety mask...Please follow the safety instructions of the installation site;
2. The installer must be qualified for this installation job;
3. The installer must be permitted by Site's owner for performing the installation;
4. The working conditions in hazardous areas (toxic gases, explosive atmosphere, high pressure, high temperature...) must be highly attention and follow the site's owner instruction strictly.

DO NOT OPEN THE COVER OR REPLACE/INSERT BATTERIES IN THE HAZADOUS AREAS

7.2 Battery installation

Steps for battery installation:

DANGER:

DO NOT REPLACE BATTERY AT HAZARDOUS LOCATION!

DO NOT OPEN THE COVER AT HAZARDOUS LOCATION!

ONLY OPEN COVER AND REPLACE BATTERY IN SAFE AREA!

Step 1: Turn the front cover of the sensor counter-clockwise;

Step 2: Carefully take out the front cover of the sensor

Step 3: Insert the type AA battery, please take note the polarity of battery

ATTENTION:

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

Step 4: Turn the front cover of the sensor clockwise to close fully.

NOTES:

Using 2mm hex key to lock the cover to prevent the unattended opening.

7.3 Sigfox node connection

WSSFCEX-EVC can connect to any electronic volume corrector via Mercury protocol.

Configuration information for EVC

RS232 Connection: auto-baurate or 9600

Instrument access code: 33333

Temperature Unit: °C

Model requirements: Honeywell / Mercury Mini - Max

8. Troubleshooting

No.	Phenomena	Reason	Solutions
1	Node does not send RF to base station periodically, LED does not blink	No power supply 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	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 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 LED welding is not good	Check LED condition and LED weld
6	The value of the sensor is 0	No pressure Lost connection with the sensor	Check pipe pressure Check sensor connection
7	The node does not send RF and the RF module is hot	Insert the battery in the opposite direction Short circuit	Warranty or replacement
8	RSSI is weak and often loses data	Distance between Node and Gateway is far or there are many obstructions Connection to Antenna problem	Check Antenna position Install Node in a well ventilated location

9. Support contacts

Manufacturer Daviteq Technologies Inc No.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	Distributor in Australia and New Zealand Templogger Pty Ltd Tel: 1800 LOGGER Email: contact@templogger.net