Ecosense pH100A, Руководство по эксплуатации

Страница: 9 / 40

7
TROUBLESHOOTING
MAIN
DISPLAY
POSSIBLE CAUSE CORRECTIVE ACTION
Er 1

pH electrode offset is greater/less
than +/-1.5 pH.

STAND was pressed before the
electrode and ATC/Temp probe settle
to within ±1.5 pH of the buffer value.

pH electrode is faulty

Replace the buffer and/or
the pH electrode. Press ESC.

Allow sufficient time for the
electrode and ATC/Temp
probe to stabilize.

Return for service.
Er 2

pH electrode slope is off by more
than 30% of ideal slope.

SLOPE was pressed before the
electrode and ATC/Temp probe
settled to within 30% of the buffer
value.

Buffer 4.00, 4.01, 9.18 or 10.01 is not
correct.

Check that the correct buffer
is used and that the
electrode slope is not off by
more than 30% from the
theoretical slope.

Allow sufficient time for the
electrode and ATC/Temp
probe to stabilize.

Replace the buffer and/or
the pH electrode. Press ESC.

Return for service.
Er 3

Temperature is out of the 0.0 to 60.0
°C range.

Bring the buffer temperature
within range.

Return for service.
OvEr/Undr

Measured pH is out of the 16.00/-2.00
pH range.

Measured mV is out of the 1250/-
2000 mV range.

Measured temperature is out of the
-10/120 °C range.

Bring the out of range unit
into the correct measuring
range.

If units are within proper
range, return product for
service.
SPECIFICATIONS
Display Range Accuracy Resolution
pH -2.00 to 16.00 pH ±0.1%, ±2 lsd 0.01 pH
mV -1999 to 1999 mV ±0.1%, ±1 lsd 1 mV
Temperature °C -10.0 to 120 °C ±0.5 °C 0.1 °C
pH Temp Compensation
AUTO/MANual -10.0 to 120.0
°C
pH Buffer Recognition (4.01, 7.00 & 10.01) or (4.00, 6.86 & 9.18)
pH Buffer Calibration Temp. Range
0 to 60
°C
pH Electrode Offset Recognition ±90mV at pH 7.00 or 6.86
pH Electrode Slope Recognition ±30% at pH 4.00, 4.01, 9.18 or 10.01
Power One 9V battery/ Approximately 1000 hours
Instrument Casing Waterproof IP 67
Calibration Back-up Yes
Audio Feedback Yes, on all touch keys
Autolock Feature Yes
Operating Temp. Range
0 to 50
°C
Operating Relative Humidity Range up to 95%
ATC Probe
Thermistor, 10k

/ 25
°C
Dimensions (L x W x D) 18.7 cm x 7.6 cm x 3.8 cm (7.37 in x 3 in x 1.5 in)
Weight (batteries included) 270 grams (.6 lb)