FRIENDCOM FC-702C User manual

FC-702C Ultrasonic Water
Meter User Manual（05）
LoRaWAN Terminal Series
Version 1.1
Date: 2021-01
www.friendcom.com

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Friendcom has always been committed to technological innovation. Our aim is to
provide customers with timely and comprehensive service. For any assistance,
please contact our Shenzhen headquarters:
FRIENDCOM TECHNOLOGY CO., LTD.
7th Floor, 17 Building, Guangqian Industrial Park, Xili Town, Nanshan District, Shenzhen,
518055, China
Tel: [phone] [phone]
Fax: [phone]
For technical support, or to report documentation errors, please visit:
http://www.friendcom.com
Or email to: [email protected]
NOTICE
Information in this document has been carefully reviewed and is considered to be accurate.
However, Friendcom assumes no liability resulting from any inaccuracies or omissions in
this document, or from use of the information obtained herein. Friendcom reserves the right
to make changes to any products described herein and reserves the right to revise this
document and to make changes from time to time in content hereof with no obligation to
notify any person of revisions or changes. Friendcom does not assume any liability arising
out of the application or use of any product described herein.
COPYRIGHTS
This manual and Friendcom products described herein may include or describe copyrighted
Friendcom material and are considered technical proprietary of Friendcom CO., LTD.
Accordingly, any copyrighted material of Friendcom and its licensors contained herein or in
Friendcom products described in this manual may not be copied, reproduced, distributed,
merged or modified in any manner without the express written permission of Friendcom.
TRADEMARKS
and Friendcom logo are registered Trademarks. All other product or
service names which are mentioned in this document are the property of their respective
owners.
Copyright © Friendcom Communications 2020. All rights reserved.

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About This Document
Scope
Scope of this document is to present features and application of Friendcom FC-702C
Ultrasonic Water Meter
Audience
This document is intended for
system engineers (SEs),
application engineers,
and test engineers.
Related Documents
Friendcom FC-702C Ultrasonic Water Meter Datasheet
Friendcom FC-702C Ultrasonic Water Meter Configuration Guide
Conventions
Symbol
Indication
This warning symbol means danger. You are in a situation that could cause fatal device
damage or even bodily damage.
Means reader be careful. In this situation, you might perform an action that could result
in module or product damages.
Means note or tips for readers to use the module.

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History
Issue
Date
Change
1.0
2020-12
Initial draft
1.1
2021-01
Upgrade the Magnet activation position
Upgrade the server platform information.

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Content
About This Document..................................................................................................................................................... 2
1Introduction................................................................................................................................................................. 5
1.1 Safety Recommendations................................................................................................................................ 5
2Product Concept.......................................................................................................................................................... 5
2.1 General Description..........................................................................................................................................5
2.2 Key Features..................................................................................................................................................... 6
2.3 Specifications....................................................................................................................................................6
3Data Format and Setting Command............................................................................................................................9
3.1 Data Format of Reporting................................................................................................................................ 9
3.2 Setting Command...........................................................................................................................................11
4Parameters Configuration..........................................................................................................................................14
4.1 Parameters Configuration.............................................................................................................................. 14
4.1.1 Wireless Configuration Mode.............................................................................................................14
4.1.2 Entering Configuration Mode............................................................................................................. 14
5Dimensions and Installation...................................................................................................................................... 16
5.1 Dimensions.....................................................................................................................................................16
5.2 Installation Requirements.............................................................................................................................. 16
5.2.1 Horizontal Installation.........................................................................................................................17
5.2.2 Vertical Installation............................................................................................................................. 18
5.2.3 Poor Installation (Horizontal)..............................................................................................................18
5.3 Common Examples of Incorrect Installations................................................................................................ 19
5.4 Daily Maintenance......................................................................................................................................... 21
6Transportantion and Storage.....................................................................................................................................21
Table Index
Table 2- 1 Specifications of FC-702C Ultrasonic Water Meter............................................................................ 7
Table 3- 1 Format of commands...................................................................................................................... 11
Figure Index
Figure 4- 1 Magnet activation position............................................................................................................15

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1Introduction
This document describes the technical parameters and key functions which are connected
with customers’ applications, and it can help customers quickly understand the data format,
as well as other related information of Ultrasonic Water Meter.
1.1 Safety Recommendations
Ensure that this product is used in compliant with the requirements of the country and the
environment, the following safety precautions must be observed during all phases of the
operation, such as usage, service or repair of wireless pulse acquisition products. If not so,
Friendcom assumes no liability for customers’ failure to comply with these precautions.
Full attention must be given to driving at all times in order to reduce the risk
of an accident. Using the terminal while driving causes distraction and can
lead to an accident. Please comply with laws and regulations restricting the
use of wireless devices while driving.
Wireless devices may cause interference on sensitive medical equipment,
so please be aware of the restrictions on the use of wireless devices when in
hospitals, clinics or other healthcare facilities.
The wireless terminal contains a transmitter and receiver. RF interference
can occur if it is used close to other electric equipment.
Do not use this product at any places with a risk of fire or potentially
explosive atmospheres such as gasoline stations, oil refineries, etc.
2Product Concept
2.1 General Description
Ultrasonic water meter is a kind of high precision water meter. Using LoRaWAN technology,

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it can support the flow reporting, remote on-off valve control, fault warning and other
functions, which greatly facilitates the statistics and management of users' water
consumption by the management department.
The product implements the standards of "GB/T 778 for Measuring Water Flow in Closed
Full Pipe for Drinking Cold Water Meter and Hot Water Meter" and the verification
regulations of "JJG 162-2009 Cold Water Meter".
2.2 Key Features
The following shows the key features of FC-702C Ultrasonic Water Meter.
Valve integrated on the meter, fully wrapped structure, anti-damage
With self-diagnosis function: battery power alarm, empty pipe alarm, reverse flow alarm,
over range alarm, water temperature alarm etc.
Advanced flow measurement method and intelligent data error correction technology,
high measurement accuracy and stability
Large capacity lithium battery, can meet the current demand of valve action.The whole
machine can meet the service life of 10 yearsLong range wireless data transmission.
Communication range up to 15km (In visibility conditions)
MAC Layer: LoRaWAN ®
Multi-band support EU433, CN470, EU868, US915, AU915, IN865, AU923-2.
Configurable reporting interval.
Air wireless configuration.
IP Rating: IP68
Lifetime depends from the device location and reporting interval.
2.3 Specifications
The following table describes the specifications of FC-702C Ultrasonic Water Meter.

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Table 2- 1 Specifications of FC-702C Ultrasonic Water Meter
Specifications
Description
Operating conditions
Operating temperature: -40 °C to +70 °C
Operating humidity: 5%RH to 95%RH
Cumulative volume resolution
0.001M (at use) 0.00001M (at verification)
Current flow resolution
0.001 m3/h (when in use) 0.001 m3/h (when verification)
Static operating current
< 6uA
Battery life
10 years
Number of LCD display
eight
Temperature rating
T30
Pressure rating
MAP16
Pressure loss rating
△p40
Environmental Hardness Rating
Class C
IP Rating
IP68
Accuracy grade
Class 2
Electromagnetic environment level
E1
Installation
Horizontal or vertical
Sensitivity level of
upper/downstream flow field
U5/D3
the ratio of measurement range Q3
/ Q1
125, 160 (default), 200

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Diameter range
DN15 ~ DN25
Commonly used traffic Q3
DN15: 2.5 m3/ h
DN20: 4.0 m3/ h
DN25: 6.3 m3/ h
Radio characteristics
Tx Power: Max. 20dBm
Rx Sensitivity: < -138dBm
Communication range
Up to 15km (In visibility conditions)
Frequency bands
EU433, CN470, EU868, US915, AU915, IN865, AU923-2
MAC Layer
LoRaWAN ®
Antenna option
Build-in Antenna
Configuration
Over-the-air
Upgrade
FOTA
Communication module certificate
approval
CE, FCC, LoRa Alliance*, ANATEL
“*” Means for features and certifications in planning

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3Data Format and Setting Command
3.1 Data Format of Reporting
Ultrasonic Water Meter actively reports data according to the set period. The format of
reported data frame can be set to three types: meter reading 1, meter reading 2, meter
reading 3 . The information reported in the there formats is different, as follows:
‘Meter reading 1’ data frame example:
FEFE 68 10 75700200357568 81 16 901F 00 2C 01020000 2C
05010000 38341331122020 0102 13 16
Bytes
Remarks
FEFE
Leading code (two bytes)
68
Frame start character
10
Instrument type
75700200357568
Address (7 bytes)(table address).
81
Control code
16
Data length
901F
Data id
00
SER
2C
Unit (refer to CJ-T188-2004 standard 8.3.1) (xxxxxx.xxm3)
01020000
Current cumulative flow (refer to CJ-T188-2004 standard 8.3)(2.01m3)
2C
Unit (xxxxxx.xxm3)
05010000
Settlement day cumulative traffic (indicating that the last record was
1.05m3)
38341331122020
Real time (YYYYMMDDHHMMSS) : 2020-12-31 13:34:38
0102
state (see CJ - T188-2004 standard 8.3.2)ST1, ST2 : Current Valve is
closed；WARNING: Empty Pipe
ST1：
BIT1,BIT0, 00: on, 01: off, 11: abnormal
BIT2,1: Battery power alarm,0: Normal
ST2：
BIT0,1: Battery power alarm,0: Normal
BIT1,1: Empty Pipe alarm,0: Normal
BIT2,1: reverse flow alarm,0: normal
BIT3,1: overrange alarm,0: normal
BIT4,1: water temperature alarm, 0: normal
BIT5,1:EE fault,0: Normal