Hach Lange sensION+ EC71 Manual page 6

1. Technical Specifications
Measuring ranges
(resolution depending on scale)
Conductivity 0.01/0.001* µS to 500/1000** mS/cm
Resistivity 0 to 100 M
Salinity 5.85 mg/l to 311.1 g/l NaCl
T.D.S. 0 mg/l to 500 g/l
Temp -20.0 to 150.0 ˚C (-4 to 302 ˚F)
* only with C=0.1 cm -1 ** only with C=10 cm
Measuring error
(±1 digit)
Conductivity 0.5%
Resistivity 0.5 %
Salinity & TDS 0.5%
Temp 0.2 ˚C (0.4 ºF)
Reproducibility
(±1 digit)
Conductivity ± 0.1 %
Resistivity ± 0.1 %
Salinity & TDS ± 0.1 %
Temp ± 0.1 ˚C (0.1 ºF)
Automatic temperature compensation
Manual entrance.
With Pt 1000 temperature probe (A.T.C.)
With NTC 10 K probe.
Temperature coefficient, TC
Linear, TC = 0.00 to 9.99
Non-linear function for natural waters (UNE EN 27888)
Temperature reference, TRef
20 ˚C, 25 ˚C or any value between 0 and 99 ˚C.
Conductivity calibration (EC)
With 1, 2 or 3 standards selectable inside the range.
Recognition of molar standards.
Calibration at any EC, salinity or TDS value (indirect calibration)
Theoretical calibration.
Manual introduction of the calibration parameters.
Programmable calibration validity between 0 and 99 days.
Automatic recalibration warning
Accepted cell constants
With calibration: values between 0.05 to 50 cm
Manual introduction: values between 0.05 to 15 cm
Temperature readjustment
Correction of the temp. probe deviation (A.T.C.) at 25 ˚C (77 ˚F)
and 85 ˚C (185 ˚F).
Measuring mode
By stability, in continuous and by time.
Data Logger
Storage capacity up to 400 readings.
Storage the last 9 calibrations.
Languages
English, German, Spanish, French, Italian, and Portuguese.
2
sensION+ EC71 HACH LANGE 7010.indd ANG:2 sensION+ EC71 HACH LANGE 7010.indd ANG:2
-1
% / ºC.
-1 .
-1
.
Display
Graphic, backlit liquid crystal, 128x64 dots.
Inputs and outputs
Conductivity cell with built-in Pt1000 sensor, telephonic
connector.
Stirrer, RCA connector.
RS232C for printer or PC, telephonic connector.
External PC key board, mini DIN connector
Ambient conditions
Working temperature 5 to 40 ˚C (41 to 104 ºF).
Storage temperature -15 to 65 ˚C (5 to 149 ºF).
Relative humidity < 80% (not condensed).
Power supply
External plug-in power supply 100-240 VAC 0.4 A 47-63 Hz.
Materials
Enclosure, ABS and PC.
Keypad, PET with protective treatment.
Physical parameters
Weight: 1100 g.
Size: 350 x 200 x 110 mm.
8/7/10 16:14:34 8/7/10 16:14:34