Product description
CA76NA
10
Hauser
3.1.3
Sample conditioning unit
1
2
4
5
6
3
A0047864
3
Sample conditioning unit
1
Solenoid valve
2
Outlet to analyzer
3
Overflow valve
4
Sample outlet (bypass at solenoid valve)
5
Filter
6
Control valve (set sampling volume, for even sample overflow)
The sample conditioning unit performs the following tasks:
• Filters the sample
• Controls the flow of sample
• Limits the maximum pressure to 1 bar (14.5 psi)
• Provides fresh sample to every channel
If a channel is being measured, the corresponding solenoid valve (1) for the channel
opens. The sample flows to the overflow vessel. The rest of the time the sample drains off
via the bypass at the solenoid valve (4).
Each channel needs a minimum overpressure of 0.5 bar (7.3 psi) and a sample flow of
10 l/h (2.64 gal/hr). The maximum permitted supply pressure is 5 bar (72.5 psi).
3.1.4
Measuring system
A complete measuring system comprises:
• Analyzer CA76NA
• Sodium electrode (not included with the analyzer, can be ordered as an accessory)
• pH electrode (not included with the analyzer, can be ordered as an accessory)
• Standard solution (not included with the analyzer, can be ordered as an accessory)
• Alkalization reagent (recommended: diisopropylamine (DIPA), to be purchased
separately, > 99.0 % (GC), in a bottle made from a solid material, e.g. glass).
