Calibration Method; Communication - Icon Process Controls truflo UltraFlo H2O Series Operating Manual

UFM-H2O Series
Ultrasonic Flow Meter
Manually Set the Default Display Window M00 Traffic Type
0 : Indicates positive cumulative flow
M3B
1 : Indicates net cumulative flow
2 : Indicates negative cumulative flow
Manual Setting to Modify Heat Unit
M3C
0 : Indicates that the heat unit is kilowatt hour ( kW h)

Calibration Method

The water meter is calibrated via constant-flow method.
Constant-current method is to mak e the calibration device (s tandard water meter) and tested water meter into stable flow state at a set
flow point, calibrate the water meter by measuring accumulative flow at the same time.
Different calibration methods may cause errors. If use start-stop method to calibrate the water meter, it may cause errors. Try to extend
calibrating time when you use start-stop method to calibrate water meter, and make sure the duration of each turn on time should be
more than 60 seconds at least.

Communication

This series of ultrasonic water meters / heat meters has the ability to support multi-protocol communication at the same time. For
example, in the same application, the above-mentioned multiple protocols can be used together or mixed. Without doing any firmware or
parameter changes.
Communication Interface
The ultrasonic water / heat meter is equipped with 3 physical serial communication interfaces, one is IR infrared communication interface,
one is TTL/USART level interface, and the other is RS485/MBUS Parallel dual interface.
USART is a logic level serial interface, suitable for direct connection to other external MCUs , such as communication modules such as
NB-iot, Lora, etc., and can also be directly connected to pressure and temperature modules such as SPI interface, etc., with power
consumption Very low features.
The IR infrared communication interface is the standard interface of this series of ultrasonic water meters, which meets the standards
stipulated in CJ188 .
The IR infrared communication interface will automatically enter the low power consumption state within 300 seconds without
communication. Touch the button to wake up the infrared interface; the above three physical serial communication interfaces are
independent of each other, allowing the three serial ports to be accessed at the same time without interfering with each other.
Serial Communication Interface Default Settings
RS485/MBUS
9600,N,8,1IR 9600,N,8,1
TTL/USART 9600,N,8,1
Change serial port default settings
Serial port parameter setting can be done through a PC -based software named V00_SETUP. The current serial port parameters are
displayed in the M26 menu.
Supported Communication Protocols
MODBUS
M-BUS
CJ188
The above protocols can be supported at the same time. Some protocols can be cross-supported at the same time.
(Battery Operated)
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