H87.0.0X.6C-01
Operating manual G 7500 Series
page 33 of 34
13
Specification
13.1 measurements and accuracy
pH
suggested probe
GE 125 (waterproof with Pt 1000 temperature probe)
connector
BNC-Buchse (waterproof)
pH
-2,00..+16,00 pH (+-0,25 % FS)
ORP
-2 000..+2 000 mV (+-0,25 % FS)
ORP (hydrogen referenced)
-1 775..+2 148 mV (+-0,25 % FS)
(for electrodes with 3 mol/l KCL electrolyte 0..100 °C)
temperature compensation
automatic or manual
Pt1000
(via banana connector or O2/conductivity probe)
accuracy requirements
Ta, Tm = 25 °C
dissolved oxygen
suggested probe
GWO 5610 (with NTC 10 k temperature probe)
connector
7-pol. LTW (waterproof)
oxygen saturation
0,0..500,0 % sat (+-1,5 % FS)
oxygen concentration
0,0..50,0 mg/l (+-1,5 % FS)
oxygen partial pressure
0..1 013 hPa (+-1,5 % FS)
temperature compensation
automatic: 0,0..+50,0 °C
salinity correction
off, 0..70 g/kg
accuracy requirements
Ta, Tm = 20 °C, 100 % sat. O2
direct flow > 20 cm/s
conductivity
suggested probe
LF 425 (with Pt 1000 temperature probe)
connector
7-pol. LTW (waterproof)
conductivity
auto-range: 0 µS/cm..500 mS/cm (+-0,5 % FS)
45..500 mS (Range: 1)
5,0..50,0 mS (Range: 2)
500..5 000 µS/cm (Range: 3)
0,0..500,0 µS/cm (Range: 4)
salinity
0,0..70,0 g/kg (+-0,5 % FS)
temperature compensation
automatic: -5,0..+100,0 °C
reference temperature
20 °C, 25 °C
linearization
off, manual linear input or non linear function for
natural water according to DIN EN27888 (ISO 7888)
accuracy requirements
Ta, Tm = 25 °C
temperature (banana plug)
sensor type
Pt 1000
Measuring range
Pt 1000: -10,0..+ 150,0 °C (+-0,25 % FS)
temperature (O2/LF electrode)
sensor type
Pt 1000 or NTC 10k
measuring range (Pt1000)
-10,0..+110,0 °C (+-1,0 % FS)
measuring range (NTC 10k)
-10,0..+110,0 °C (+-0,5 % FS)
Ta = ambient temperature, Tm = media temperature
