Instruction Manual

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57
Specifi cations (HandyLab 750)
Memosens pH input (ISFET) M8 socket, 4 pins, for Memosens lab cable
Display ranges
1)
-2,000 … +16,000 pH
-2000 … +2000 mV
-50 … +250 °C
Memosens Redox M8 socket, 4 pins, for Memosens lab cable
Display ranges
1)
-2000 … +2000 mV
-50 … +250 °C
Sensor standardization
*)
ORP calibration (zero adjustment)
Permissible calibration range mV (offset) -700 … +700 mV
pH/mV (analog)
Connection pH socket, DIN 19 262
(13/4 mm)
pH range –2 … 16
Decimal places *
)
2 or 3
Input resistance 1 x 10
12
Ω (0 … 35 °C)
Input current 1 x 10
-12
A (at RT, doubles every 10 K)
Measuring cycle approx 1s
Measurement error
2,3,4)
< 0.01 pH, TC < 0.001 pH/K
mV range -1300 … +1300
Measuring cycle approx 1s
Measurement error
2,3,4)
< 0,1 % meas. val. + 0,3 mV, TC < 0,03 mV/K
Temperature 2 x 4 mm dia. for integrated or separate temperature detector
Measuring ranges NTC 30 k –20 … +120 °C
Pt 1000 –40 … +250 °C
Measuring cycle approx 1s
Measurement error
2,3,4)
< 0.2 K (Tamb = 23 °C); TC < 25 ppm/K
pH-calibration
AutoCal buffer sets
*)
Operating modes
*)
AutoCal Calibration with automatic buffer recognition
MANUAL Manual calibration with entry of individual buffer
values
DATA INPUT Data entry of zero and slope
-01-
(Default)
NIST standard 1.679/4.006/6.865/9.180
-02- NIST technical 1.68/4.00/7.00/10.01/12.46
-03- SI Analytics technical 2.00/4.00/7.00/10.00
-04- Knick Calimat 2.00/4.00/7.00/9.00/12.00
-05- Mettler Toledo 2.00/4.01/7.00/9.21
-06- HACH 4.01/7.00/10.01/12.00
-07- Ciba (94) 2.06/4.00/7.00/10.00
-08- Hamilton 2.00/4.01/7.00/10.01/12.00
-09- Reagecon 2.00/4.00/7.00/9.00/12.00
-10- DIN 19267 1.09/4.65/6.79/9.23/12.75
-U1-
loadable via HandyLab Pilot (User)
Permissible calibration
range Zero point pH 6 … 8
With ISFET: –750 … +750 mV Operating point (asymmetry)
Slope approx. 74 … 104 %
Calibration timer
*)
Interval 1 … 99 days, can be switched off