Supply moisture meter and sound level meter,etc.

M49

Displays the input contents for the serial port.

Check the network communication.

By checking the displays, you can know if the communication is ok.

M50

Setups for items to be output with built-in data logger. 1 to 22 items of the following choice can be output with every operation. “YES” means to output this item.

0. Date and Time  1.System Status  2.Current Window

3. Signal Strength  4.Flow Rate   5.Velocity  6.NET Totalizer

7.POS Totalizer  8.NEG Totalizer   9.Energy Flow Rate

10. Energy NET Total

M51

Window to setup the internal timer, which is the time base for data logger, Thermo-printer and the built-in batch controller.

There are three sub-windows: start time, time interval and the times of output.

Input with “**:**:**” for the start time means start immediately.

The minimum time interval is 1 second and the maximum is 24 hours.

The maximum times of output is 7999. Times of output greater than 8000 mean that the output will be continuing all the time.

M52

Data logging direction control.

(1) If ‘Send to RS485’ is selected, all the data produced by the data logger will be transmitted out through the RS-232/RS485 interface.

M53

Display analog inputs, AI5, current value and its corresponding temperature or pressure or liquid level value.

M54

Pulse width setup for the OCT (OCT1) output. Minimum is 1 mS, maximum is 500 mS.

M55

Select analog output (4-20mA current loop, or CL) mode.

Available options:

(0) 4-20mA output mode (setup the output range from 4-20mA)

(1) 0-20mA output mode (setup the output range from 4-20mA. This mode can only be used with Version-15 flow meter)

(2) Serial port controls 0-20mA

(3) 4-20mA corresponding fluid sound speed

(4) 20-4-20mA mode

(5) 0-4-20mA mode (can only be used with Version-15 flow meter)

(6)20-0-20mA mode(can only be used with Version-15 flow meter)

(7) 4-20mA corresponding flow velocity

(8)4-20mA corresponding heat flow rate

M56

4mA or 0mA output value,

Set the value which corresponds to 4mA or 0mA output current (4mA or 0mA is determined by the setting in M55).

M57

20mA output value,

Set the value which corresponds to 20mA output current.

M58

Current loop verification.

Check if the current loop is calibrated correctly.

M59

Display the present output current of current loop circuit.

M60

Setup system date and time. Press ENT for modification. Use the dot key to skip the digits that need no modification. 

This function is realized by CPU in the new versions. The software modification will delay the time. Therefore, it is highly recommended to adjust the date and time as soon as the software is modified.

M61

Display Version information and Electronic Serial Number (ESN) that is unique for each flow meter.

The users may employ the ESN for instrumentation management.

M62

RS-232/RS485 setup.

The  serial configuration of device connected with flow meter should match that of the flow meter.

The following parameters can be configured: Baud rate (300 to 19200 bps), parity, data bits (always is 8), stop bits

M63

Select communication protocol.

Factory default is ‘MODBUS ASCII+TDS7’. This is a mode for MODBUS-ASCII, Meter-BUS, TDS7-Fuji Extended Protocol, Huizhong’s various protocols.

If MODBUS-RTU is intended，then select ‘MODBUS_RTU’.

If  “MODBUS-ASCII” is selected ,user will be prompted for the selection of  Huizhong’s  protocols

M64

AI3 value range.

Used to enter temperature/pressure values that are corresponding to 4mA and 20mA input current. The display values have no unit, so that they can present any physical parameter.

M65

AI4 value range.

Used to enter temperature/pressure values that are corresponding to 4mA and 20mA input current.

M66

AI5 value range.

Used to enter temperature/pressure values that are corresponding to 4mA and 20mA input current.

M67

Windows to setup the frequency range (lower and upper limit) for the frequency output function. The frequency output is generally realized by OCT output, in spite of a relatively lower accuracy. If a higher accuracy is expected, a frequency output module is an ideal option (under development).

Valid range is 0-9999Hz. Factory default value is 0-1000 Hz.

For Version-12, Version-13, Version-14 flow meters, a hardware module shall be plugged to the Serial Expanding Bus, for the frequency output function. Please remember to order the module if frequency output function needed.

For Version-15 flow meter, please indicate on the orders that the frequency function is expected; otherwise a flow meter without frequency output circuits will be provided.

M68

Window to setup the minimum flow rate value which corresponds to the lower frequency limit of the frequency output.

M69

Windows to setup the maximum flow rate value that corresponds to the upper frequency limit of the frequency output.

M70

LCD display backlight control. The entered value indicates how many seconds the backlight will be on with every key pressing. If the entered value is greater than 50000 seconds,  it means that the backlight will keep on all the time.

M71

LCD contrast control. The LCD will become darker or brighter when a value is entered.

M72

Working timer. The working time will be recorded by the second.

It can be cleared by pressing ENT key, and then select YES.