USER GUIDE FOR SIGFOX-READY AMMONIA GAS SENSOR WITH BLE WSSFCB-NH3

THIS IS OBSOLETE MANUAL

Please access https://www.iot.daviteq.com/wireless-sensors for updated manual
WSSFC- NH3-MN-EN-01

AUG-2021

This document is applied for the following products

SKU WSSFCB-NH3 HW Ver. 1.1 FW Ver.
1.0
Item Code

WSSFCB-NH3-8-01

Wireless Sigfox Ammonia Gas Sensor with BLE, Internal antenna, Type AA battery 1.5VDC, IP67, RC1 zone

WSSFCB-NH3-9-01

Wireless Sigfox Ammonia Gas Sensor with BLE, Internal antenna, Type AA battery 1.5VDC, IP67, RC2-RC4 zones

0. Configuration Check List

WSSFC-ULC-H22.PNG

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 5

STEP 4:  Add device to Backend Sigfox

 

refer to section 5.2 for details  

STEP 5:  Installation

 

refer to section 8  for details  

1. Functions Change Log

HW Ver. FW Ver. Release Date Functions Change
1.1 1.0 DEC-2020  

2. Introduction

WSSFC-NH3 is a Sigfox-ready electrochemical-type gas sensor which has high sensitivity to low concentrations of ammonia gas, high selectivity, and a stable baseline. Integrated ambient humidity and temperature so the sensor can be measured by special algorithm expertise through modelling and compensating of external heat sources without the need of any additional components. With Ultra-low power design and smart firmware allow the complete Wireless and Sensor package run on 1 x AA battery 3.6V for 2-5 years with 15 minutes update. It can support all regions of Sigfox network in over the World, RC1, RC2, & RC4.

Typical Applications: Monitor leakage of Ammonia gas for Refrigerator, monitor Ammonia in private or public toilets,...

WSSFC-NH3-H1.jpg

3. Specification

SENSORS SPECIFICATION:  
NH3 sensor electrochemical-type gas sensor
Measuring range for NH3 0..100 ppm
Max detecting concentration 200 ppm
Repeatability / Resolution / Stability per month < 10% of Reading value / 1 ppm / < 2% of Reading value
Zero stability +/- 2 ppm
Working atmospheric pressure 101.3 Kpa +/- 10%
Sensor life > 2 years
Humidity and Temperature sensor Digital type, factory calibrated
Humidity measuring range / accuracy / resolution 0 .. 100 %RH, ± 2.0% / 0.1%
Temperature measuring range / accuracy / resolution -40 .. + 85°C / ± 0.2°C / 0.1°C
Working temperature and humidity -30 .. + 50°C, 15 .. 90% RH
Sensor housing / Rating SS316/SS304 housing with 316SS sintered filter / for Indoor use
Sigfox SPECIFICATION:  
Sigfox zones select RC1-RC2-RC4
Antenna Internal Antenna 2dbi
Battery 02 x AA Type 1.5VDC, working time up to 10 years (depends on configuration)
RF Module complies to CE, FCC, ARIB
Working temperature -40°C..+60°C (using Energizer Lithium Ultimate AA battery)
Housing/Protection Aluminum + Polycarbonate / IP67
Dimension / Net weight H180xW73xD42 / < 400 grams

4. Dimensions

WSSFC-NH3-H6.jpg

5. Operation Principle

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

After 1 minute 30 seconds later the device will send the first data packet and at the same time wait for the downlink packet from the 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.

WSSFCEX-PPS-H9.png

REED SWITCH EVENT PRE-CONDITION ACTION LED STATUS BUZZER STATUS ACTIVITIES POST-CONDITION
2 START_UP Any state Move Magnet Key to contact point of REED SWITCH and hold 5s.
Buzzer beep 1 long time.
Blink WHITE Beep 1 long time See FW specs Device reset
1 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
1 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 5s. if shorter than 5s, there will be no data sending.