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Home Parts CREATEC Instrument CategorypH/ORP Online Instrument

pH/ORP Online Instrument

CREATEC Instrument

pH/ORP Online Instrument

3 different models of pH/ORP instruments and their equipped sensors

pH/ORP Instruments Support Calibration with Six Kinds of Buffer Solutions

The pH/ORP instrument is a device used to measure the pH value and oxidation-reduction potential in water bodies. These instruments can measure the pH value and ORP in water bodies through specific sensors and display the measurement results on the instrument's screen. They have functions such as real-time monitoring, automatic calibration, data recording and analysis, and alarms.

pH/ORP instruments are commonly used in the fields of water treatment, environmental monitoring, laboratory research, etc. They help achieve precise control and maintenance of water quality, playing a crucial role in protecting the environment and ensuring the safe operation of industrial production.

Specification
Working Principle
Video

Specification

Download Data Sheet

pH/ORP-8500A Online Meter
pH/ORP-5500 Online Meter
pH/ORP-3500 Online Meter
pHD/ORPD-6110 Series Data Acquisition Terminal

3.5" 320 × 240 TFT color screen, multi-parameter display.
It has pointers, numbers and colors with space-time concept and can display forms.
Be compatible for six kinds of buffer solution which suitable for international standard.
Touch key, Chinese/English to select, guided operation.
RS485, Modbus RTU protocol.
Double channels/isolated (4–20mA), instrument/transmitter mode for selection.
Three channels photoelectric switch control, arbitrary combination for PH/ORP/temperature/timing.
Switch control, frequency pulse, frequency pulse for option, fit for more.
EMC design with better ability on anti-interference.
Calendar function which can set timing and reserved timing.
With the CE Certification.

A pH/ORP-8500A controller and sensor displaying measurement results

Main Technical Data

Table 1: pH/ORP-8500A Online Meter Main Technical Data
Measurement Parameter	pH	ORP	Temperature
	Range: 0.00–14.00	Range: (-1999 to +1999) mV	Range: (0.0–100.0) °C
	Resolution: 0.01	Resolution:1 mV	Resolution: 0.1 °C
	Accuracy: ±0.1	Accuracy: ±5 mV (Indicator)	Accuracy: ±0.5 °C
Medium	(0–80) °C
Temperature Components	NTC 10K Temperature compensation
Analog Output	Double channels isolated, transportable (4–20)mA, instruments/transmitter mode
Control Output	Triple channels semiconductor photoelectric switch, load current: AC/DC 30V, 50mA (max)
Communication Port	RS485, Modbus RTU protocol
Power Supply	DC 24V
Consumption	< 5.5W
Working Environment	Temperature: (0–80) °C Relative Humidity: ≤ 85% RH (none condensation)
Storage Environment	Temperature: (-20 to +60) °C Relative Humidity: ≤ 85% RH (none condensation)
Protection Level	IP65(with rear cover)
Dimension (H × W × D)	96 mm × 96 mm × 94 mm
Hole Size (H × W)	91 mm × 91 mm
Installation	Panel mounted, fast installation

Application

Widely used for online pH/ORP measurement in chemical process, oil refining, metallurgy, pharmacy, chemical synthesis industrial/sewage water treatment, environment monitoring, agricultural technology, biological fermentation, industrial coating and so on.

Be compatible for six kinds of Buffer solution, international standard.
Sealed, cost-effective pH/ORP online pH/ORP controller.
Outlay temperature sensor design, universal pH electrode.
White back-light, overhead multi symbols, simple to set up, easy to use.
Isolated (4–20)mA output, dual mode instrument/transmitter.
Double relay control (one for high limit, one for the low limit) and the time-delay control.
Two composite electrode, do not need to replace the cable.
Isolated measurement/transmitter/controller, no mutual influence.
Optimal electromagnetic compatibility design, good anti-jamming performance.
With the CE Certification.

A closed pH/ORP-5500 controller and sensor

Main Technical Data

Table 2: pH/ORP-5500 Online Meter Main Technical Data
Measurement Range	pH	ORP	Temp.
Measurement Range	0.00–14.00	(-2000 to +2000)mV	(0.0–99.9) °C (Temp.Compensation: NTC 10K)
Resolution	0.01	1 mV	0.1 °C
Accuracy	±0.1	±5mV (electronic unit)	±0.5 °C
Buffer Solution	pH value: 9.18, 6.86, 4.01, 10.00, 7.00, 4.00
Temp. Compensation	(0–50) °C (with 25 °C as standard) manual/automatic temp., compensation for selection
Analog Output	Isolated (4–20)mA, Instrument/Transmitter for selection
Power Supply	pH/ORP-5500	pH/ORP-5510	pH/ORP-5520
Power Supply	DC 24V	AC 110V	AC 220V
Control Output	Double relay output (ON/OFF), AC 240V/3A
Power Consumption	< 3W
Working Environment	Working temp.: (0–50) °C Relative humidity: ≤ 85% RH (none condensation)
Storage Environment	Working temp.: (-20 to +60) °C Relative humidity: ≤ 85% RH (none condensation)
Dimension (H × W × D)	96 mm × 96 mm × 105 mm
Hole Size (H × W)	91 mm × 91 mm
Protection Level	IP65 (with back cover)
Installation	Panel installation, fast installation

Application

Widely used in scientific experiments and flow detection of various pH solution. It is a panel seal type casing, cost-effective pH & ORP line analytical instruments.

One kind of popular and cost-effective online pH/ORP controller.
Be compatible for six kinds of Buffer solution (10.00, 9.18, 7.00, 6.86, 4.00, 4.01).
Outlay temperature sensor design, Universal pH electrode.
White back-light, overhead multi symbols, simple to set up, easy to use.
Isolated (4–20)mA output, dual mode instrument/Transmitter.
Double relay control (one for high limit, one for the low limit) and the time-delay control.
Optimal electromagnetic compatibility design, good anti-jamming performance.
Muti power supply, DC/AC power input, no polarity connection.
Compact Quick installation with the Short cabinet.
With the CE certification.

A pH/ORP-3500 controller and sensor displaying measurement results

Main Technical Data

Table 3: pH/ORP-3500 Online Meter Main Technical Data
Measurement Range	pH	ORP	Temp.
Measurement Range	0.00–14.00	(-2000 to +2000)mV	(0.0–99.9) °C (Temp.Compensation: NTC 10K)
Resolution	0.01	1mV	0.1 °C
Accuracy	±0.1	±5mV (electronic unit)	±0.5 °C
Buffer Solution	9.18, 6.86, 4.01, 10.00, 7.00, 4.00
Medium Temp.	(0–50) °C (with 25 °C as standard) manual/automatic temp. Compensation for selection
Analog Output	Isolated one Channel (4–20)mA, Instrument/Transmitter for selection
Control Output	Double relay output (single contact ON/OFF)
Power Supply	pH/ORP-3500	pH/ORP-3510	pH/ORP-3520
Power Supply	DC 24V	AC 110V	AC 220V
Power Consumption	< 3W
Working Environment	Working temp.: (0-50) °C Relative humidity: ≤ 85% RH (none condensation)
Storage Environment	Temp.: (-20 to +60) °C Relative humidity: ≤ 85% RH (none condensation)
Dimension (H × W × D)	48 mm × 96 mm × 80 mm
Hole Size (H × W)	44 mm × 92 mm
Installation	Panel mounted, fast installation

Application

Widely used in scientific experiments and flow detection of various pH solution. It is a small, low-cost and high cost-effective on-line analysis instruments.

No on-site APP calibration.
No secondary wiring, communication cable once wiring permanent use.
Wide power supply range, ignoring the influence of circuit resistance voltage drop.
Micro encapsulation pass-through technology, the electrical meter and communication are embedded into the sensor connector.
RS485 digital communication, Modbus RTU standard protocol.
Compatible with 4–20mA system (RS485/4–20mA+ WIFl module, setting the corresponding information of digital quantity and mA accurately by APP).
Separate detachable structure, only replace the chemical acquisition unit.
Wireless transmission technology, no metal exposed, no corrosion aging, no water vapor leakage effect.
APP calibration, no difference type replacement, easy to use and replace, without professional knowledge.
The product has the traceability of physical examination, history, life span, obstacle, and so on.

A pHD/ORPD 6110 series data acquisition terminal

Main Technical Data

Table 4: pHD/ORPD-6110 Series Data Acquisition Terminal Main Technical Data
Designation	pHD/ORPD Data Acquisition Terminal
Project	pH	ORP	Enclosed Temperature
Measurement Range	2.00–12.00	(-1999 to +1999)mV	(0–50) °C
Resolution	0.01	1mV	0.1 °C
Accuracy	±0.1	±5mV	±0.5 °C
Working Environment	Temperature: (0–50) °C Humidity: ≤ 95% RH (non condensation)
Tolerance Pressure	0.4 MPa
Cable Length	10m (Original), Support to 200 m (Reservation)
Communicate	RS485 (Modbus-RTU protocol)
Power Supply	DC (9–28)V
Consumption	1.2W
Weight	0.6 kg
Material	ABS
Hole Size	φ45 mm × 220 mm
Piping Installation	NPT3/4" chemical front-end
Protection Support	NPT3/4" cable end

Application

Widely used in power, petrochemical, industrial, chemical process, industrial water treatment, environmental monitoring, sewage treatment, aquaculture and other related to pH and ORP online analysis occasions, to meet the technical applications in various fields.

Working Principle

pH-ORP instrument sensor measurement principle diagram

The pH/ORP instrument can simultaneously measure pH value and oxidation-reduction potential (ORP). They primarily rely on integrated pH and ORP sensors within the device. These sensors are typically installed on the same probe or in close proximity to enable simultaneous monitoring of pH and ORP values for the same test sample.

pH Sensor. When the measuring electrode containing hydrogen ion sensitive glass is immersed in the test solution, the glass surface will exchange with H+ ions in the water, generating a potential difference between the measuring electrode and the reference electrode. The potential difference is logarithmically related to the pH value of the solution.

ORP Sensor. When the ORP electrode (usually platinum or gold electrode) is immersed in the solution, the electrode surface will react with oxidants or reductants in the solution, causing changes in the electrode potential. The potential difference between the ORP electrode and the reference electrode reflects the oxidation-reduction state of the solution.

The electronic circuits and microprocessors in the analysis instrument convert the potential difference into digital signals, displaying pH and ORP values in real-time.

Videos

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Here are product catalogue and data sheet for your reference. more information just contact us.