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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 congured and loaded to the worst case conditions.

Section 4 - Operations

4.1 Operaons 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, identies something that likely renders the device immediately faulty and fails the 4-20 mA outputs.

4.2 Sub-Menu - Error Codes

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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

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

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 ash is in an unrecognized format.

Consult factory. Flash type error. User will be required to roll-back to previous rmware 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. Congure for manual pressure input and give best estimate value for measurement and calibration

pressure(s).

N35

Modbus validation engine has agged 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 agged

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 ow during calibration. Check for leaks. Check sensor connections. Error is cleared with a proper calibration.

N44 Auto calibration zero value has crossed the user dened tolerance limit.

Check calibration gas o

w 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 ow during calibration. Check for leaks. Check sensor connections. Error is cleared with a proper calibration.

N46 The O

reading exceeds the user dened 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

condition.

N47 The O

reading is lower than user dened 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 dened 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

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 dened 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.