Model |
|
pH Level 1 |
pH
Level 2 |
pH
Level 3 |
pH 540 GLP |
Range/Resolution |
pH |
2.000…+16.000
pH
-2.00…+16.00
pH |
-2.000…+16.000
pH
|
|
mV |
-999.9…999.9mV
-1999…+1999mV |
-1250…+1250
mV |
|
Temp |
0…+99.9℃ |
0…+99.9℃
|
Accuracy(±1
digit) |
pH |
±0.003 pH±0.01 pH |
±0.003 pH |
|
mV |
±0.2 pH
±1 pH |
±1mV |
|
Temp |
±0.1K |
±0.1K |
Temperature
compensation pH |
0…+99.9℃
automatically with TFK 150, TFK
325 or pt-1000, or -20…+130℃
if sample temperature entered
manually |
DIN
measurement |
—— |
pH
to DIN 19 268(ASTM) |
AutoRead |
for
reproducibility better than 0.02pH |
depends
on selected Reproducibility |
Real-time
clock |
—— |
failsafe,
lithium battery with working life> 10 years |
not volatile,
lithium battery battery with life>10years |
Calibration |
MultiCal(R)
automatic calibration
AutoCal: automatic 2-point
calibration with DIN buffers |
MultiCal(R)
automatic calibration
AutoCal: automatic 2/3- point calibration with DINbuffers |
MultiCal(R)
automatic calibration
AutoCal: automatic 2 to 5
point calibration with DIN buffers
|
AutoCal-TEC: auto-matic
2 point calibration with WTW technical buffers |
AutoCal-TEC: auto-matic
2/3 point calibration with WTW technical buffers |
AutoCal-TEC: auto-matic
2/3 point calibration with WTW technical buffers |
|
AutoCal-VAR:
automatic 2 to 5 point calibration with individually selected
buffers.
ConCal: conventional 1-/2-point calibration with and buffers |
ConCal:
conventional 1-/2-point calibration with any buffers |
ISECal:
2 and 3 point calibration with standard solutions |
Calibration
protocol |
—— |
GLP-conform
protocol of calibration; last calibration stored in memory |
GLP-conform
protocol of calibration; last 3 calibrations stored in
memory |
Calibration
timer |
—— |
adjustable,
1…999
days |
adjustable,
1…99
days |
Sensor
evaluation |
depends
on the calibration results, shown in display |
Limit values |
—— |
freely
adjustable for pH, mV and ℃ according
to measuring range |
Data memory |
200
records (measurement, temperature) |
100
records ( measurement, temperature, date/time) |
Data output |
display only |
display or
intrface |
display
or intrface |
Analog interface |
—— |
corresponds
to electrode potential, i.e. 50…62mV/pH
unit |
configurable
for pH/mV and temperature:
pH:100mV/pH
mV:1mV/mV
℃:10mV/K |
Digital
interface |
—— |
bidirectional
RS 232 |
bidirectional
RS 232 |
D.S.
connection(dead stop) |
—— |
600mV
no-load voltage 10 μA
cut-off current |
Operating
time/Power supply |
3000
h with 4×1.5V universal plug-in power supply 230 VAC or 120 VAC |
plug-in
power supply 230 VAC or 120 VAC |
Protection
type |
IEC
529/IP 43 without built-in printer |
IP
54 to IEC 529 |
Dimensions |
230×210×70mm
250×300×70mm(B×D×H) |
240X220X110mm(BXDXH) |
Weight |
1.3 kg |
1.6 kg |
1.5
kg |
Certified to |
CE,
TÜV/GS, UL, CUL |
|
Warranty |
3
years on the instrument |
|