20
ba77237e02
12/2021
Technical data
Na 800
Technical data
Dimensions
(in mm)
Length
120 mm
Diameter
Shaft
Plug head connector
12 mm
16 mm
Materials
Shaft
Glass
Plug head connector
PPS
Membrane
Glass
Materials contacting the test
sample
Glass
Junction
Platinum
Sensor
Na-sensitive glass, sphere
Reference system
Silamid
®
Measurement
conditions
Measuring ranges at 20 °C
10
-6
... 1 mol/l Na
+
0.01...23000 mg/l Na
+
Temperature range
-10 ... +80 °C
pH range
8 ... 11 (see I
)
Depth of immersion
min. 20 mm
max. 100 mm
Operating position
Vertical, tilted max. 45 °
Max. allowed overpressure
< 5·10
4
Pa (0.5 bar)
Characteristic data
on delivery
Reproducibility
without interferences:
± 2 %
< ±1 mV (< ±4% of the measured
Na
+
concentration)
Membrane resistance
< 500 M
Ω
120
153
12
16
Summary of Contents for wtw Na 800
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