21
IOM (Safety) -
Installation, Operation and Maintenance
Optical Oxygen Analyzer
All programming of the
OXYvisor
analyzer can be accomplished either through the keypad or through the
OXYvisor
software provided with the
unit. Consult the OXYvisor IOM and/or the OXYvisor IM Software for detailed operation instructions. With regards to safety, the OXYvisor was tested to
the standards stated in Section 2.7, while configured and loaded to the worst case conditions.
Section 4 - Operations
4.1 Operations Overview
Section 4
Operations
The analyzer will show any active error codes on the active display, along with recording the error into the log and throwing any associated alarm. The
error codes are broken into two main groups, “N” for non-critical alarms and “X” for critical. “N” Non-critical alarms, Table 8, indicate an issue that should
be immediately investigated and resolved, however it has been determined that the measurement is still likely good and it is unnecessary to fault the
output. A “X” critical fault, Table 9, identifies something that likely renders the device immediately faulty and fails the 4-20 mA outputs.
4.2 Sub-Menu - Error Codes
Table 8 - “N” Non-Critical - Error Code Table
Error
Code
N-type (non-critical) Error Description
Trouble shooting and things to check
N12
Optical measurement error. Optical board is not able to perform the
calculation from the sensor input available.
Check O
2
sensor connections. Check sensor tip for damage. Place sensor into Zero gas and observe. Consult factory.
N13
Phase Angle “out of range”
This is a common error for BOS3 sensors while exposed to air. Place sensor in zero gas and observe. Check O
2
sensor connections.
Check sensor tip for damage. Consult factory.
N15
Data sent to the Optical Board is wrong or out of bounds.
Consult factory.
N21
Data present in flash is in an unrecognized format.
Consult factory. Flash type error. User will be required to roll-back to previous firmware rev or will have to erase the log in order
to proceed.
N25
Ambient pressure reading is out of range (500 mBar to 11 mBar).
Check local ambient conditions. Configure for manual pressure input and give best estimate value for measurement and calibration
pressure(s).
N35
Modbus validation engine has flagged an error and some unauthorized
operation was performed over Modbus.
Check the Modbus master device. If a Modbus to USB cable is being used, check cable requirements and replace.
N36
Unauthorized register was accessed via the Modbus. It can be flagged
while writing or reading via Modbus.
Check your Modbus master device and any converters.
N41
Sensor temperature protection. The sensor operating temperature is
out of range.
Investigate the process temperature. Process temp must be greater than -10 °C and less than 90 °C. Reduce process or sample
temperature.
N42
Zero phase angle is out of the allowed limits (45° to 70°)
Check calibration gas flow during calibration. Check for leaks. Check sensor connections. Error is cleared with a proper calibration.
N44
Auto calibration zero value has crossed the user defined tolerance limit. Check calibration gas flow during calibration. Check for leaks. Check sensor connections. Error is cleared with a proper calibration.
N45
Auto calibration span value has crossed the tolerance limit.
Check calibration gas flow during calibration. Check for leaks. Check sensor connections. Error is cleared with a proper calibration.
N46
The O
2
reading exceeds the user defined 20mA value.
Check the 20 mA point. Increase the 20 mA point or consider bi-linear 4-20 mA output to account for this high O
2
condition.
N47
The O
2
reading is lower than user defined 4mA value.
Check the 4 mA point. If 4 mA point is set to zero, re-perform a zero calibration.
N51
RTD not detected in the system.
Check the wiring and any jumpers at the termination board. Remove the sensor and check for proper Pt1000 resistance with
Multimeter.
N52
Temperature reading is out of user defined 4-20 mA limits
Check the 20 mA point. Increase the 20 mA point or consider bi-linear 4-20 mA output to account for this high O
2
condition.
N53
Analog output 1, AO1, is open circuit.
Check wiring to device.
OXYvisor
is (active, powered output) so make certain the receiving device is passive (non-
powered). If AO1 is not planned to be used, set to inactive
N54
Analog output 2, AO2, is open circuit.
Check wiring to device.
OXYvisor
is (active, powered output) so make certain the receiving device is passive (non-
powered). If AO2 is not planned to be used, set to inactive
N56
Analog input, AI, pressure value is outside of user defined 4-20 mA
limits.
Check that process or sample pressure value is within the limits. Check transmitter wiring to the AI terminals. Expand 4-20 input
range if required.
