ORP-TRA-600

Major Technical Specifications

Wire Connection Details

Note: The standard version is a two-wire ORP electrode

A Terminals:

B Terminals

Operation Of The Instrument

4.1 Soft key function

4.2. Operation of the instrument

Under main interface，Press“ ”key to Menu interface ， the detailed description as follows:

Note:After having set an option, you must press the button to save the data.

Calibration Of Instruments

The calibration takes the form of one-point calibration. The automatic calibration protection function work in the process of calibration, illegal calibration is not executed.

Before the calibration starts,make sure that you have compounded, the default calibration standard is 240mV, this value can be changed. Before the calibration starts, the electrodes must be submerged and activated in clean water or the measured solution for 5 minutes.

The calibration methods are as follows: when it is the in the measuring state,

Press the button and until the instrument display “CAL” , and it enters the calibrating state.

Press the button , and the instrument will display “240mV” . Put the cleaned electrodes into the “240mV” buffer solution,

press the button , the controller display current buffer solution “240mV” value, when ORP value stable, and wait 3 to 5 minutes, press the button to save.

l During calibration, if the controller display “ ERR” , which indicate calibration failure, need to re-calibrate, if more times calibration failure, pls change the ORP electrode, or contact with the supplier.

Installation Of Measuring Electrodes

The measuring electrodes are compound electrodes with plastic shells and 3/4 ＂ NPT threaded joints, Please install strictly according to the following diagrams:

3/4＂BSP threaded joints.

Points for attention:

1) The electrodes shall be installed where the flow speed is steady and air bubs seldom gather or backwater which may lead to the inaccuracy.

2) The electrode shall be submerged deep into flowing water.

3)The cable collecting PH signals which is a form of weak potential signals shall be separately wired and shall not share a protective pipe with power supply wires and control wires, so as to avoid interference.

Measuring electrodes maintenance:

1) Avoid putting the electrodes in the dry air. When the electrodes are not in use, clean them with water and then put them back into the liquid- containing case with 1 mol KCL,or put the electrodes into a container with 1 mol KCL in it.

2) The electrodes shall be cleaned regularly. If the glass bulbs of the electrodes and Polytetrafluoroethylene (PTFE) are contacted and polluted, clean them with the following agents:

① use surface active agent to get rid of grease or greasy things.

② use 10% hydrochloric acid solution to get rid of calcium precipitates or metal hydroxides.

③ use 10% hydrochloric acid solution to get rid of sulphide precipitates. Use the mixture of 10% hydrochloric acid solution and pepsins to get rid of protein adhesives.

Maintenance Of Instrument

1) The measuring electrodes are accurate parts and shall not be taken out of the measuring room unless it is necessary to do so.The ORP electrode shall be cleaned Regularly.

2) Measuring cables are special cables which shall not be replaced by other types of cables. Unqualified cables may cause big errors.

3) If the measuring electrodes are damaged or losing efficacy, Purchas and replace them with the same type of ORP electrodes, and calibrate them according to the fifth chapter of this manual.

4) The instrument is composed of accurate integrated circuits and electronic components and therefore shall be protected from humidity.

The Instrument As A Whole Set