Flowmeter SVTU-11B, Руководство по эксплуатации

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13 Typical faultinesses and methods of their elimination
While in operation, the meter constantly checks both the working capacity of its units
and the working capacity of sensors (flow sensors, temperature sensors, etc.) connected to
the meter.
Diagnosed errors are subdivided into groups according to a priority (importance for rea-
lization of correct measurement). The group number is less, the error importance is more.
The error code includes its number and number of the measurement channel, in which there
was an error.
Displayed error looks on the indicator as follows (example):
Er 1_3_1
Here 1_3_1 is error code, which consists of group number (first digit), error number
(second digit) and measurement channel number (third digit). In this case measurement
channel number is a number of temperature sensor. Simultaneously only one error can be
displayed on the indicator. To view all errors it is recommended to use ‘Errors’ mode.
13.1 System errors.
As mentioned above, the lower number of errors, the higher its priority. Without priori-
ties, there are system errors - errors of internal meter’s hardware, which generally preclude
the operation of the meter. If there are such errors, no parameter is measured and accumula-
tion of any parameters is not provided. Such errors are displayed on the indicator as follows
(example):
«SYSErr02»
Number means an error type. System errors are registered in the event journal with
some text decoding, if possible.
In case of system error the meter should be delivered to manufacturer for repair.
13.2 Error group «0» .
In group «0» following errors are included:
−
« 0_1_0 » - The error of flow rate measurement. Flow rate measurement in both chan-
nels is impossible.
−
« 0_2_0 » - Error of ADC. Temperature measurement in all channels is impossible.
−
« 0_3_0 » - The error of calibration of temperature detector. Calibration parameters
have been distorted somehow.
−
« 0_4_0 » - The error of calibration of pressure transducer. Calibration parameters
have been distorted somehow.
13.3 Error group « 1 ».
This group includes errors referring to temperature measurement (the sign «x» specifies
number of the channel):
−
« 1_1_x » - break of
Т
Sx.
−
« 1_2_x » - fault of
Т
Sx.
−
« 1_3_x » -
Т
Sx is failed. Resistance of mentioned
Т
S is out of specified limits.
−
« 1_4_x » - The error of incorrect coefficients for
Т
Sx, while calibrating coefficients
are entered manually.