The principle of ISE (Ion Selective Sensor) is an electrochemical sensor that uses membrane potential to determine the activity or concentration of ions in a solution. When it comes into contact with a solution containing fluoride (chloride) ions, a membrane potential directly related to the activity of the ion is generated at the interface between its sensitive membrane and the solution. Ion selective sensors, also known as membrane sensors, have a special sensor membrane that selectively responds to fluoride (chloride) ions.

-Instrument features

lEquipped with backlight sensor, capable of AUTO/ON/OFF backlight setting function

lAutomatic temperature compensation, password protection

lOutdoor waterproof design suitable for wall mounted, panel mounted, and circular pipe installation

lLarge LCD display screen with operation status and special symbol display

lProvide sensor automatic cleaning device contacts, program output settings, and the relationship between sensor membrane points and fluoride ion content conforms to the Nernst formula

lPassword protection can be set to prevent accidental operation by non staff members

-Technical specifications:

Measurement range:F ˉ: 0-20000mg/L, Cl ˉ: 0-35500mg/L, temperature: -30~130 ℃;

refined true Degree:F ˉ: 0.03%, Cl ˉ: 0.01% mg/L Temperature: ± 0.1 ℃;

Basic error: reading error±2%； Temperature: ± 0.3 ℃;

Temperature compensation:0～80.0℃， PT1000、NTC30Khand movement/Automatic temperature compensation;

Correction mode: two-point or three-point, offset value correction(13 segments to choose from);

Alarm output:2 sets of relay control contacts: 3A 240VAC, 3A 28VDC; High/low alarm, lag any program setting;

Cleaning the contact points:ON 0-999 seconds/OFF 0-999 hours, one set of ON/OFF;

Current output: 2 channelsIsolated output,0-20mA (load resistance<1.5K Ω); 4-20mA (load resistance<750 Ω)

Environmental temperature:-10～60℃；

Relative humidity: ≤ 95% (no condensation);

Protection level:IP65；

Power supply:AC100~240V ，50/60HZ；