Model:

SL1-DWS-295 sodium ion concentration meter is mainly used to measure trace sodium ion concentration in various water samples, such as water supply of demateralizing boiler in the power plant, steam and water of condensation; can be also used in universities and colleges, research institutes, petrochemical industry and micro-electronics to analyze sodium ion concentration in the water samples, such as natural boiler water and industrial drainage.

Dot matrix LCD, Chinese operation interface
Automatic calibration, automatic temperature compensation, automatic calculation of computer electrode slope percentage.
The measuring result can be stored, deleted, viewed and printed. The max. storage volume is 
50 sets of measuring data; two sets of printing modes, instant printing and memory printing are available.
The instrument adopts three-electrode measuring system, with double display of pNa value and temperature value, mV value and temperature value, or concentration value and temperature value of sodium ion.
Power off protection function. Measuring data stored in the instrument and set parameters can be kept under the condition of closedown or off normal power cut.
The instrument is equipped with RS-232 interface, which can connect TP-16 serial printer, can communicate with computer if using REX DC1.0 Software of Data Acquisition

1. Measuring range

pNa value: (0.00~9.00)pNa

Na⁺ (concentration value): (2.3×10⁷~2.3×10^-2)μg/L

Temperature: (-5.0~105.0)°C

2. Intrinsic error of electronic unit

pNa value: ±0.01pNa±1

Calculation error of pNa ~ [Na⁺] conversion: ±3% (reading)

Temperature: ±0.3°C

3.Stability of electronic unit: ±0.01pNa±1/3h

4.Repeatability: pNa value: 0.02pNa±1

5.Temperature compensation range of the solution measured: (0.0~50.0)°C

6.External size of electornic unit (mm): 290×200×75

7.Weight of electronic unit: about 1Kg

8. Normal operating condition:

a)Ambient temperature: (5~35)°C

b)Relative humidity: no more than 80%

c)Electric power supply: DC power supply (+9V,300mA, positive inside, negative　outside)

d)Temperature of aqueous solution measured: (0~50)°C

e)No electromagnetic field which will influence performance exists except earth magnetic field.