DESCRIPTION:
The newly redesigned pNa is an easy-to-use and inexpensive instrument for determining water hardness/softness. The hardness of water is due to the presence of magnesium and calcium. These make washing difficult, waste soap and create unpleasant scum and scales. With a zeolite system the calcium and magnesium ions are substituted on a one-to-one basis with sodium ions from a resin. Once all the sodium ions are exhausted, the resin has to be regenerated. This is currently determined by estimating the volume of water that goes through the softener and guessing when to change the resin!
Even though this may work in some cases, it fails in most since the sodium content of feed water is never constant. As a result,either the resin is regenerated too early, waste of resources, or too late, causing damage due to scaling. With the pNa you can measure the sodium content of feed water and exit water in seconds. When the resin is exhausted of sodium, there will be no exchange and the pNa will read the same value at the two ends. Only then the resin should be changed. pNa takes guess work out of resin regeneration!
Now the pNa tester comes with a new ergonomic casing. The new case is much more rugged, better fits your hand and also features a much larger LCD.
How zeolite resin works
The softening process removes excess hardness by using a zeolite medium.The most common form is sodium zeolite, with the Na2Z symbol.Typical sodium zeolite actions on hardwater are:
CaSO4 + Na2Z
Na2SO4+ CaZ
Mg(HCO3)2 + Na2Z2NaHCO3+ MgZ
Hard water flows into a zeolite bed and emerges as soft water. There is no precipitation, no reduction of TDS but a loss of sodium and gain of calcium by the zeolite. When the softening capacity is exhausted, the zeolite must be regenerated with brine or magnesium. In addition to being a regulated ion in wastewater, sodium concentrations must be monitored in food storage and production operations and for ecological studies. The pNa tester is a fast and economical way to check this critical parameter in these applications, too.
Some of the pNa outstanding features include:
SPECIFICATIONS:
| SPECIFICATION | |
| RANGE | 0.0 to 3.0 pNa (23 to 0.023 g/L of Na+) |
| RESOLUTION | 0.1 pNa |
| ACCURACY (@20°C/68°F): | ±0.2 pNa |
| CALIBRATION | Manual 1 point through trimmer |
| BATTERY: TYPE/LIFE | 4 x 1.4V / 500 hours approx. continuous use |
| ENVIRONMENT | 0 to 50°C (32 to 122°F); RH 95% |
| DIMENSIONS (meter only) | 175 x 41 x 23 mm (7.9 x 1.8 x 1") |
| WEIGHT | 78 g (2.7 oz.) |
HOW TO ORDER:
HI98202: pNa Sodium Meter supplied with HI7080L cal solution.....$130.00
