Key functions of the model ec300, The lcd display, Measurement modes – YSI EC300 User Manual
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KEY FUNCTIONS OF THE MODEL EC300
1.
: Turns the unit ON or OFF. Calibration values are not erased when the unit is turned off.
When the unit is not in use, turn it off to save battery life. For long-term storage, remove the
battery.
2. MODE: Selects display mode. In Normal operation, press MODE to sequentially display
uncompensated conductivity, temperature compensated conductivity, salinity and total
dissolved solids (TDS). In calibration mode, this key exits the current calibration and
displays the next calibration parameter.
3. CAL: In normal operation, changes the mode from Normal to Calibration.
4.
(Enter) : In Calibration Set-up, press this key to save the current parameter to memory.
5.
Δ and ∇ Keys: Increases or decreases the display value as desired.
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THE LCD DISPLAY
1. CONDUCTIVITY: Displays when
measuring conductivity.
2. BAT: Low battery indicator.
3. Main display for compensated and
uncompensated conductivity, salinity
and TDS values.
4. CAL: Calibration mode indicator.
5. TDS: Displays when measuring total
dissolved solids.
6. SALINITY: Displays when measuring
salinity.
7. CELL: Indicates conductivity cell constant value.
8.
°C: Flashes during temperature compensated conductivity measurement. During
calibration, indicates temperature reference unit.
%:
Displays during calibration; indicates temperature coefficient unit.
9. ppt:
Parts per thousand; indicates salinity measurement.
10. uS, mS: micro Siemens, milli Siemens; Indicates conductivity measurement.
11. g/L: grams/Liter; indicates TDS measurement.
12.
°C: Temperature display.
MEASUREMENT MODES
1. Temperature - Current solution temperature continually displays.
2. Temperature Compensated Conductivity - Measurement of conductivity, compensated to
25
°C or another specified value between 15 and 25°C. Expressed as uS/cm or mS/cm with
a flashing “
°C”.
3. Uncompensated
Conductivity – Direct measurement of conductivity, not compensated to
a specific temperature. Expressed as uS/cm or mS/cm.
4. Salinity – Measurement of salinity; expressed in parts per thousand (ppt).
5. TDS
– Measurement of total dissolved solids (TDS); expressed in grams per liter (g/L)
Carefully observe the units displayed at the far side of the LCD to determine the desired mode.
Figure 1. LCD Display
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