pH/ORP Meter (PO-650)
pH is the measure of the hydrogen ion concentration in a liquid. pH measures the acidity or alkalinity of a liquid.
The pH scale is logarithmic and runs from 0.0 to 14.0 with 7.0 being neutral. Readings less than 7.0 indicate acidic
solutions, while higher readings indicate alkaline or base solutions.
Chlorine and Ozone are the most common disinfectants used in the water and waste water treatment industry.
Oxidation-reduction potential (ORP) is the parameter commonly used to measure REDOX reactions and is
the only practical method we have to electronically monitor disinfectant effectiveness.
Key Features
PO 650 Specifications
PO Sensor Specifications
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Key Features
- TRACEABILITY to National Standards
- PUSH BUTTON FRONT KEYS for easy set up
- INDIVIDUAL HIGH & LOW SET POINT RELAY for alarm or signal to PLC or can be used for proportional acid/alkali dosing
- PROGRAMMABLE CONTROL DELAY TIME to prevent chattering
- HYSTERISIS TO PREVENT RELAY CHATTERING
- IN-BUILT DIAGNOSTICS for wrong calibration or sensor error
- IN-BUILT ALARM ANNUNCIATOR
- MANUAL/AUTOMATIC relay reset options
- AUTOMATIC TEMPERATURE COMPENSATION (for pH)
- RS 485 for online monitoring/ data logging
- ISOLATED 4-20 mA OUTPUT with normal/inverse function and in-built current simulator
PO 650 Specifications
- Physical dimensions : 105 x 105 x 130mm
- Cut-out size : 90 x 90 mm
- Enclosure : ABS weather proof IP-65
- Mounting : Field/ Pipe/ Panel
- Input supply : 230 V A.C./110 V A.C./ 24 V D.C
- Alarm : Separate LED indication for high & low
- Control Operation : Alarm/ auto reset/ control
- Accuracy : ± 2% FSD
- Display : 4 digit 7 segment LED display
- Calibration / set point : Using front keypad
- Output : 4-20mA (optional), RS 485 (optional)
- Relay : Individual high & low relay 5A@ 230V (programmable through entire range with set-able control delay & hyteresis)
PO Sensor Specifications
- Overall Dimensions : 140mm (L) x 32mm (W)
- Type : Flow Through/Tank (optional)
- Sensor Output : Milli Volt
- Electrode Material: Glass bulb with epoxy body*
- Process Connection : 20 NB/ 15 NB M
- Cable : 1 Core Shielded 5 meter
- Cable Termination : 0.75mm² lugs
- Max. Temperature : 0-60°C, 0-100°C (with ATC optional)
- Max. Pressure : 5 Kg/Cm ²
- Installation : In vertical line
- Sensor Holder : MOC: ABS/Norryl with 20 NB, BSPF end connections, *Glass body for ATC Application
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