9.1 Safety introduction

Please do not open the cover on the flameproof enclosure if in an explosive environment.
When trying to wire to HART or RS485 device, please make sure that the process of wiring the device into the loop complies with the intrinsic safety requirement. Or please process the wiring in a none-explosive environment.
Please make sure the environment the flowmeter is in can meet the requirement of the certificate.
When power is wired, please make sure the front and rear cover is closed properly.

9.2 Troubleshooting and repair

Symptom	Reason	Troubleshooting	Repair
No display	Power supply failure	Test the voltage on the power source with a universal meter	Re-wire the power or use a new power
	Power is not wired	Test the voltage on the power source with a universal meter	Wire the power
	Cable if broken	Check if there is a break-off point on the cable	Check the cable and re-wire
	Wrong wiring	Check if wiring to the correct terminal	Re-wire
The displayed flow rate is 0 while there is flow in the pipe	Flow rate is lower than the meter's lower limit	Increase the flow rate to check	Increase the flow rate or replace a new proper flowmeter
	The flow rate of the small-signal cut off function is too high	Check the small-signal cut-off setting	Set the small-signal cut off to a proper value
	The energy threshold value is too high	Check if the Energy threshold value is too high in spectrum analyzing checking mode	Set the Energy threshold value to a proper value (Please refer to Note 1 for how to set it)
	Transmitter function failure	Replace the transmitter with another transmitter of the same type to check	Replace the transmitter
	Sensor is damaged	Increase the flow rate to check first then install the transmitter to another flowmeter in the same type to check.	Replace the sensor
	Pipeline blocked or sensor jam.	If all the above possibilities are eliminated, please check the pipeline and installation.	Re-install the flowmeter
There is a big difference between the flow reading and the process flow rate	No density compensation for steam measurement	Check the density compensation devices and the setting	Fix density compensation
	The estimated flow rate before using the meter is wrong	Use another flowmeter to confirm the actual flow rate
	Setting incorrect	Check the settings of meter K factor, upper and lower limit of flow rate	Set the meter correctly

Note 1: Enter code setting, set C49=12. Press “U-D button” to check the current energy of the vortex flow signal and vibration signal. E1 is the energy of the vortex flow signal, please set the energy threshold value lower than the displayed value. E.1 is the energy of vibration, please set the energy threshold value lower than the displayed value. Set above value in D017 (Energy threshold of vortex flow signal) and D018 (Energy threshold of vibration), then set C49 back to 00.

9.3 Self-diagnose function

SVF128 digital vortex flowmeter display can also indicate the self-diagnose code as below：

Error code	Problem	Repair
Err-003	Temperature sensor disconnected	Check Temperature sensor
Err-004	Pressure sensor disconnected	Check pressure sensor
Err-005	About to over total flow	This is a reminder message
Err-006	Display value over the limit	The value is over the physical limit of the display
Err-011	Superheated steam temperature is over the limit	Reduce the steam temperature
Err-012	Superheated steam pressure is over the limit	Reduce the steam pressure
Err-013	The button is pressed and hold for too long time	Check the button circuit
Err-014	Reset code setting failed	Check EEPROM
Err-015	Reset digital setting failed	Check EEPROM
Err-016	Read total flow error	Check EEPROM
Err-017	The temperature calibration setting is wrong	Check the record of temperature calibration
Err-018	pressure calibration setting is wrong	Check the record of pressure calibration
Err-020	Flow rate limit setting is incorrect	Check the flow rate limit setting
Err-021	The temperature limit setting is incorrect	Check the temperature limit setting
Err-022	The pressure limit setting is incorrect	Check the pressure limit setting
Err-023	Communication connection error	Check the communication li
Err-024	The setting is incorrect when using aga_nx_19 to calculate the compressibility factor	Check if the setting for compressibility factor is correct
Err-025	Frequency output for total flow is over the limit	Reset the total flow frequency output factor
Err-026	3V power source failure	Check the circuit board
Err-027	Frequency output incorrect	Check the range of frequency
Err-028	The master is disconnected from the slave	Check the cable wiring between local and remote transmitter

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9. [SVF128] TROUBLESHOOTING AND REPAIR

In this article

9.1 Safety introduction

9.2 Troubleshooting and repair

9.3 Self-diagnose function

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