Omega RD200 - Manual (Page 127)

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21. MAINTENANCE 21.4 Troubleshooting
Troubleshooting methods are shown classified by symptoms. Read the item that corresponds to the symptom.
Never repair or modify the instrument by replacing assembled component units or parts, otherwise correct
repair or modifications cannot be executed and also electric shock or damage of your recorder may occur.
1
Not Working
Check Causes and remedial measures
1) Check if power is supplied to the power
terminals.
Turn on the external power supply source.
2) Check if the power supply is as specified. Supply the specified power (100 to 240V AC and 50/60 Hz).
3) Check if the connections to the power
terminals are correct.
Connect the cable to the power terminals (L, N) correctly.
4) Try turning off or on the external power supply source.
5) Initialize the parameters and check if your recorder recovers to normal conditions. See Section 20.
(Caution) All parameters become the default values. Program them again.
2
Measured Value Abnormal
Symptoms Causes and remedial measures
1) Measured values are unstable.
• Check if the measuring terminals are loose.
• Check if the input signal is unstable.
• Check if the thermocouple is connected with another
instrument in parallel and the burnout function is programmed
to [Enable].
2) Check if the measured value is displayed
as shown below.
• Check if the input terminals are connected correctly.
• Check if the input terminals are loose.
• Check if the input signal wires are disconnected.
• Check if the input signal exceeds the measuring range.
3) An error occurs.
• Check if the selection of ºC/ºF computation is correct.
• Check if the input signal is correct.
• Check if an extension wire is connected to the input terminal.
(Thermocouple input type only)
• Check the scale and adjust the measured values if any error
is detected. (See Section 18.1.)
4) Influences by ambient temperature
(Thermocouple input type only)
• Check if the RJ selection is 0 (disable) in [Range/Printing
range] programming. (This is negligible if reference junction
compensation is executed externally.)
• Check if the terminal cover is mounted.
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Repair and modifications Caution