INZ-TN1ZSS-E
- 67 -
(6) “Gas Pressure (H-Limit)” alarm is occurred.
→
1) Is the device used in a place where the gas pressure is out of the specified range?
→
Yes (The specified gas pressure for this device is ±10kPa. Take counter-measures such as changing a place to install it.)
→
2) Is the analog input setting range of temperature in the “Analog Input” screen correct?
→
No (Input the setting range of analog input correctly.)
(7) “AI Under” alarm is occurred.
→
1) Is an external input device is connected to the AI terminal while the channel setting is selected in the
“Analog Input” screen?
→
Yes (Change the setting to the fixed value or input analog input signal.
→
2) Do the AI terminal and the setting channel match each other?
→
No (Check the analog input terminal number and the set channel.)
→
3) Is the input DC4/20Ma?
→
No (Is the analog input set at the voltage input?)
(8) “Box Temperature Warning” alarm is occurred.
→
1) Is the device installed and used in a place, which meets the specifications?
→
No (Use the device in environment, which meets the specifications.)
→
2) Is the device used in environment where gas temperature meets the specified range?
→
No (The specified gas temperature for this device is 450°C or less. Take counter-measures such as changing a place to
install it.)
→
3) Is the air purge flow rate sufficient?
→
No (Increase the air purge flow.)
→
4) Others
→
Yes (Counter-measures should be taken such as extending the distance from the stack to the device. Contact the manu-
facturer.)
(9) “Air Purge (Low Pressure)” alarm is occurred.
→
1) Is the AI terminal connected to an external input device while the purge pressure is set to the channel
setting in the “Analog Input” screen?
→
No (Setting should be a fixed value, or input an analog input signal.)
→
2) Is air purge pressure as high as the alarm setting, or is it purged?
→
No (Increase the air purge pressure, and perform air purge.)
(10) Not operating even with the power turned on
→
1) Is the input voltage lower than the voltage rating?
→
Yes (Supply the specified input voltage.)
→
2) Do the connectors contact properly? Are the wires connected securely?
→
No (Check the wiring and connector units, and connect them properly.)
→
3) Others
→
Yes (The device might be out of order. Contact the manufacturer.)
(11) Different from the manual analysis value
→
1) Is the length of stack input correctly?
→
No (The length of stack = the length of measuring light path influences the measured concentration much. Input a cor-
rect value.)
→
2) Is the gas temperature different from the input value (analog input, fixed value) ?
→
Yes (Input the correct temperature of the measuring gas into the device.)
→
3) Is the gas pressure different from the input value (analog input, fixed value)?
→
Yes (Input the correct pressure of the measuring gas.)
→
4) Is the receiving light quantity extremely small?
→
Yes (Adjust the light axis.)
(12) The measured value is over the range.
→
1) Is the measuring gas is a concentration value, which is over the range?
→
Yes (Check it, conducting manual analysis and the like.)
→
2) Is the length is longer than the specifications?
→
Yes (When the measuring light path length is longer, compared with the specifications, the measuring concentration be-
comes higher.)
→
3) Others
→
Yes (Contact the manufacturer.)
