Hach SP-510 Basic User Manual page 7

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The SP-510 Hardness Monitor continuously measures water softener levels to find hardness
breakthroughs based on softener exhaustion. The monitor is used in commercial and industrial water
applications. The monitor has an automatic control system that starts regeneration sequences with
the alarm circuit.
Hardness is measured at different levels as CaCO
solutions. A relay closes when the instrument measures a hardness value that is more than the trip
point. Refer to Figure 1
Figure 1 Product overview
1 Power switch
2 Power access port
3 Relay and alarm contact access port
4 Air purge (optional)
5 Access cover
6 Colorimeter
3.3 Product components
Make sure that all components have been received. Refer to
damaged, contact the manufacturer or a sales representative immediately.
for the product overview.
with the applicable indicator and reagent
3
7 Keypad
8 Pump/valve module
9 Indicator and reagent bottles
10 Sample inlet
11 Enclosure drain
12 Sample drain
Figure 2. If any items are missing or
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