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SECTION 8
TROUBLESHOOTING
8.1
Introduction
The Model 2100N Laboratory Turbidimeter has several self-diagnostic functions
and Error Codes to permit convenient and effective system troubleshooting.
8.2
Error Messages
Error messages may be initiated due to instrument malfunction or operator error.
Errxx
error codes are cleared from the display by pressing the
ENTER
key. The
meter continues operating in the error condition; a calibration in progress can be
continued. Any calibration being calculated (at the time the message appears) is
discarded; the old calibration is retained. Table 5 lists the error codes displayed for
specific conditions.
Table 5 Error Codes
Code
Probable Cause
Corrective Action
Err01
Dilution water calculated to be >0.5 NTU
Start calibration over with higher quality dilution water, or filter water
with a membrane filter before use.
Err02
Two calibration standards have the same
value, or their difference is less than 60.0
NTU. Standard 1 is too low (<10 NTU)
Recheck preparation of standards and repeat calibration.
Err03
Low light error
Reinsert sample.
Check that lamp is on. Check for obstructed light path. Dilution may
be necessary.
Err04
Memory malfunction
Switch instrument off and back on with I/O. Call Hach Service.
Err05
A/D overrange
Contact Hach Service.
Err06
A/D underrange
Contact Hach Service.
Err07
Light leak
Close the sample cell cover. Use the I/O switch to turn the instrument
off and then back on.
Err08
Bad lamp circuit
Contact Hach Service.
Err09
Printer timeout error
Check that external printer is properly connected. Check that
external printer is selected (on-line).
Err10
System voltage out of range
Switch instrument off and back on with I/O. Call Hach Service.
Err11
System loop test error
Switch instrument off and back on with I/O. Call Hach Service.
Tài liệu sưu tầm của Trung Sơn - www.tschem.com.vn - 028.3811.9991 - [email protected]
Tài liệu sưu tầm của Trung Sơn - www.tschem.com.vn - 028.3811.9991 - [email protected]
