Insert the controller from the front panel, install the fix clamp(up and down), tighten with the screws.
Chart 1 Fixed support installation
Probe Installation: Installation method and Attention-matter Chart 2（Several common method of installation） In order to make sure the probe measure the real value on the pipe, bubbles should be avoided ,otherwise the value will be not accurate, please install according to the following chart: Chart 3（attention matters of pipe installation） Relay alarm description: When the relay is higher than (or lower than) the alarm pull in value acts, and when it is lower than (or higher than) the open limit value releases, the relay action diagram is as follows:Note: When the relay drives the inductive load, please install an intermediate relay to prevent the contact from being broken down and ionized by the inductive back EMF and burning the contact.
4-20mA current output formula
1.PH Current output formula: Factory setting define output current value is :0 pH is corresponding value of 4 mA; 14 pH is corresponding value of 20 mA. I = ( D - 4 mA corresponding value）× ( 16 / (20 mA corresponding value- 4 mA corresponding value) ) + 4.00 I = ( D - 0 ）× ( 16 / 14 ) + 4.00 Note: I is output current value 4 mA≤I≤20 mA D is pH value displayed by the instrument 0.00pH≤D≤14.00pH 2. Formula of ORP current output: Factory setting define the output current is :-2000mV is corresponding value of 4 mA; +2000mV is corresponding value of 20 mA. I = ( D - 4 mA corresponding value ）× ( 16 / (20 mA corresponding value - 4 mA corresponding value) ) + 4.00 I = ( D – (-2000) ）× ( 16 / (+2000 – (-2000)) ) + 4.00 I = ( D + 2000 ）× ( 16 / 4000) ) + 4.00 Note:I is output current value 4 mA≤I≤20 mA D is ORP value displayed by the instrument -2000mV≤D≤+2000mV