Hach-Lange SENSION+ MM378 - Manual (Page 19)

Table 2 Measurement warnings and errors
Error/Warning Solution
- - - - - Measured value is out of range.
Examine the probe: Clean the probe (refer to
Clean
the probe on page 16 for more information); make sure
that there are no air bubbles in the membrane. Shake
the probe like a thermometer; connect a different
probe to find if the problem is with the probe or the
meter.
Unstable measurement
(pH, EC and DO
measurements)
Time > 120 s Make sure that the membrane and the diaphragm are
properly immersed in the sample.
Examine the temperature.
Examine the probe: Clean the probe (refer to
Clean
the probe on page 16 for more information); make sure
that there are no air bubbles in the membrane. Shake
the probe like a thermometer; connect a different
probe to make sure that if problem is with probe or
meter.
Unstable measurement
(ISE measurements)
Time > 240 s Make sure that the membrane and the diaphragm are
properly immersed in the sample.
Examine the temperature.
Examine the probe: Clean the probe (refer to
Clean
the probe on page 16 for more information); make sure
that there are no air bubbles in the membrane. Shake
the probe like a thermometer; connect a different
probe to make sure that if problem is with probe or
meter.
TC = 0
Impossible to measure
salinity Modify TC
10.389 mg/L >>>>>
00012 00:13 ISE measurement: The measured value is superior to
the highest standard used in calibration. Measure
again.
0.886 mg/L <<<<<<
00018 00:11 ISE measurement: The measured value is inferior to
the lowest standard used in calibration. Measure
again.
Replacement parts and accessories
Note: Product and Article numbers may vary for some selling regions. Contact the
appropriate distributor or refer to the company website for contact information.
Replacement parts
Description Item no.
sensION+ PH3 Lab pH-meter with accessories, without
probe
LPV2000.98.0002
sensION+ PH31 Lab pH-meter, GLP, with accessories,
without probe
LPV2100.98.0002
sensION+ MM340 Lab pH & Ion-meter, GLP, 2 channels,
with accessories, without probe
LPV2200.98.0002
sensION+ EC7 Lab conductivity meter, with accessories,
without probe
LPV3010.98.0002
sensION+ EC71 Lab conductivity meter, GLP, with
accessories, without probe
LPV3110.98.0002
sensION+ MM374, 2 channel Lab meter, GLP,
accessories, without probes
LPV4110.98.0002
sensION+ MM378, 2 channel Lab meter, GLP,
accessories, without probes
LPV4130.98.0002
Consumables
Description Item no.
pH buffer solution 4.01, 250 mL LZW9463.99
pH buffer solution 7.00, 250 mL LZW9464.98
pH buffer solution 10.01, 250 mL LZW9471.99
Electrolytic solution (KCl 3M), 125 mL LZW9510.99
Electrolytic solution (KCl 3M), 250 mL LZW9500.99
Electrolytic solution (KCl 3M), 50 mL LZW9509.99
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