Hach-Lange 2100P iso - Portable Turbidimeter Instrument - Manual (Page 31)

Section 5, continued
Page 31
4650098 diagnostics.fm Error Messages
Message Probable Cause Corrective Action
E1 Dilution water is ≥ 0,5 FNU. Start calibration over with better quality
dilution water or use a membrane filter to
filter the water before use.
E2 Two standards have the same value or
their difference is less than 60 FNU.
Not all standards were read during the
calibration.
Standard 1 is too low (<10 FNU). Recheck preparation of standards and repeat
calibration.
E3 Low light error. Re-read measurement.
Check lamp
Check for obstructed light path.
Dilution may be necessary.
E4 EEPROM malfunction. Check sum failed. Press I/O. If E4 reappears,
call Hach service. If CAL? appears,
recalibrate.
E5 A/D overrange. Check for obstructed light path.
E6 A/D underrange. Check for open lid during reading and re-
read. Check for obstructed light path. If
persists, call Hach Service.
E7 Light Leak. Close lid before pressing READ.
E8 Bad lamp circuit. Reinsert lamp leads at terminal block-make
sure the lead ends are not touching each
other.If this fails, call Hach Service.