Ⅰ.GENERAL
pH/ORP-3500 series is a kind of popular and cost-effective online pH and ORP
controller , with plug-in pH/ORP-1220 sensor, which have good measurement
accuracy, anti-interference,easy to install and operation features.
White backlight LCD screen,several operations, easy for operation
Be compatible for six kinds of buffer solution(10.00,9.18,7.00,6.86,4.00,4.01)
which suitable for international standard.
Selectable temperature sensor which reduce the replacement cost.
Manual calibration is easy for on-site calibration.
EMC enhancement type could run smoothly under kinds of industry
environment.
（4~20）mA output support instrument/transmitter modes and satisfy all
（4~20）mA receiving unit.
Double relay high/low and delay control function could fulfill pH or ORP
interval control and adjustment.
Several power supply to be selection according to the different models.Input
AC/DC power, no polarity connection.
1.1 Working Principle
The weak voltage change is generated when H+ affected the inserted sensor, the
changeable value will transmit to the instrument. After converting and calculating the
generated pH/ORP signal, the instrument will show the values on the screen.
1.2Application
This series instruments are widely used for online pH/ORP monitoring in
environment protection water treatment, pure water treatment, industrial process and
so on.
1.3 Classification
【NOTE】
- Put the instrument in dry environment and the water-drop or moisture will
cause the damage or measurement error； - Pay more attention on the power supply before wiring connection.
