Technical Specifications - Hach senslON+ MM 374 Manual De Instrucciones

1. Technical Specifications

Measurement ranges
pH -2.00 to 19.99
mV 2000
ISE 10 -5 M to 10 -1 M
Temp. -20 to 150 ˚C (-4 to 302 ˚F)
EC 0.01/0.001* µS to 500/1000** mS/cm
(* with C=0.1 cm -1 ** with C=10 cm
Resistivity 0 to 100 M
Salinity 5.85 mg/L to 311.1 g/L NaCl
TDS 0 mg/L to 500 g/L
Resolution
pH 0.1/0.01/0.001
mV 0.1/1
ISE programmable
EC variable
Resistivity variable
NaCl variable
TDS variable
Temp. 0.1 ˚C (0.1 ˚F)
Automatic temperature compensation
Channel 1
pH: with Pt1000 temperature probe (A.T.C.)
with NTC 10 K probe
manual entry
temperature from Channel 2.
Isopotential pH programmable, standard value 7.00.
CE: with Pt1000 temperature probe (A.T.C.).
Linear function, TC = 0.00 to 9.99 % / ˚C. TRef 20 ˚C, or 25 ˚C.
Non-linear function for natural waters (UNE EN 27888)
Channel 2
pH: Manual entrance, with Pt 1000 temperature probe (A.T.C.) or
With NTC 10 K probe.
Isopotential pH programmable, standard value 7.00.
pH calibration
With 1, 2 or 3 buffers selectable inside the range.
Automatic recognition of technical buffers, DIN 19266 buffers
and up to 3 user's buffers.
Calibration at any pH value (indirect calibration)
Theoretical calibration.
Manual introduction of the calibration parameters.
Programmable calibration frequency between 0 h and 7 days.
Automatic recalibration warning
Automatic rejection of electrodes in poor conditions.
pH calibration acceptation criteria
Asymmetry potential ± 58 mV.
Slope 41 to 62 mV/pH, a 25 ˚C (77 ˚F) (sensitivity 70 to 105 %).
mV calibration
Automatic recognition of redox standard 220 mV at 25 ˚C (77 ˚F).
Calibration at any mV value.
Manual introduction of the calibration parameters.
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Meas. error Reproducibility
( 1 digit) ( 1 digit)
0.002 0.001
0.2 0.1
-- --
0.5 % 0.1 %
0.5 % 0.1 %
0.5 % 0.1 %
0.5 % 0.1 %
0.2 ˚C (0.4 ˚F) 0.1 ˚C (0.1 ˚F)
ISE calibration
2 to 5 programmable standards.
Selectable calibration units mol/L, M, g/L, mg/L, ppm, mmol/L,
mM, µmol/L or %.
Up to 4 calibration curves per channel.
Electrical 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 frequency between 0 and 99 days.
Automatic recalibration warning
Accepted cell constants, values between 0.05 to 50 cm
TDS conversion factor
Values between 0.0 to 4.44, Default 0.64.
Temperature readjustment
Correction of the probe deviation (A.T.C.) at 25 ˚C and 85˚C.
Measuring mode
By stability (programmable criteria), continuous and by interval.
Data Logger
Storage capacity up to 330 readings for each channel.
Storage the last 9 calibrations.
Languages
English, German, Spanish, French, Italian and Portuguese.
Display
Graphic, backlit liquid crystal, 128x64 dots.
Inputs and outputs
2 Combined or indicator electrodes, BNC connector (Imp. >10
2 Reference electrodes, banana connector.
1 A.T.C. type Pt 1000 (or NTC 10 K probe), banana or telephonic
connector.
1 Conductivity cell (EC), telephonic connector.
2 stirrers, 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 ˚F).
Storage temperature -15 to 65 ˚C (5 to 149 ˚F).
Relative humidity < 80% (non-condensing).
Power supply
External plug-in power supply 100-240 VCA 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.
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