410Aplus 420Aplus 520Aplus 525Aplus
pH range -2.000 to 19.999 -2.000 to 19.999 -2.000 to 19.999 -2.000 to 19.999
resolution 0.001/0.01/0.1pH 0.001/0.01/0.1pH 0.001/0.01/0.1pH 0.001/0.01/0.1pH
relative accuracy ±0.005 ±0.005 ±0.005 ±0.005
slope 80 to 120% 80 to 120% 80 to 120% 80 to 120%
concentration
range
NA NA NA NA
resolution NA NA NA NA
relative accuracy NA NA NA NA
temperature -5.0 to 105.0
o
C -5.0 to 105.0
o
C -5.0 to 105.0
o
C -5.0 to 105.0
o
C
resolution 0.1
o
C 0.1
o
C 0.1
o
C 0.1
o
C
relative accuracy ±1.0
o
C ±1.0
o
C ±1.0
o
C ±1.0
o
C
millivolt range NA -1600.0 to +1600.0 -1600.0 to +1600.0 -1600.0 to +1600.0
resolution NA 0.1 mV 0.1 mV 0.1 mV
relative accuracy NA ±0.2 mV or±0.05% ±0.2 mV or ±0.05% ±0.2 mV or ±0.05%
of reading which ever is greater of reading which ever is greater of reading whichever is greater
relative millivolt
range NA -1999.9 to +1999.9 -1999.9 to +1999.9 -1999.9 to +1999.9
resolution NA 0.1 mV 0.1 mV 0.1 mV
relative accuracy NA ±0.2 mV or ±0.05% ±0.2 mV or ±0.05% ±0.2 mV or ±0.05%
of reading whichever is greater of readings whichever is greater of reading whichever is greater
display Custom LCD Custom LCD Custom 2-color Custom 2-color
vacuum fluorescent vacuum fluorescent
with17 character prompt line with17 character prompt line
inputs One BNC, One pin tip, One BNC, One pin tip, One BNC, One pin tip, Two BNC, Two pin tip,
ATC, power, RS232 ATC, power ATC, power, RS232, Karl Fischer ATC, power, RS232, Karl Fischer
outputs RS232 RS232 RS232, 2.5 mm RS232, 2.5 mm
pin recorder pin recorder
power 9 VDC line converter 9 VDC line converter 9 VDC line converter 9 VDC line converter
requirements 110 or 220 VAC. 110 or 220 VAC. for either 110 or 220 VAC. for either 110 or 220 VAC,
50/60 Hz walloutlet. 50/60 Hz walloutlet. 50/60 Hz wall outlet. 50/60 Hz wall outlet.
input >10
12
ohms >10
12
ohms >10
12
ohms >10
12
ohms
impedance
instrument drift < 50 microvolts/
o
C< 50 microvolts/
o
C< 50 microvolts/
o
C< 50 microvolts/
o
C
input bias current < ± 1 picoamp at 25
o
C and < ± 4 picoamps over full operating range
environmental 5 to 45
o
C and 5 to 85% relative humidity, non-condensing
requirements
meter dimensions 8.08 x 3.26 x 1.90 inches
case Dust and Splash Resistant, Chemical Resistant
SPECIFICATIONS
Specifications
125