ICON PROCESS CONTROLS R7C Gold Electrode ORP Sensor Transmitter Instruction Manual

: July 18, 2024
: ICON PROCESS CONTROLS

Table of Contents

R7C Gold Electrode ORP Sensor Transmitter
Specifications:
Product Usage Instructions:
Installation and Setup:
Safety Information:
Preparation before Measurement:
Product Features:
- FAQ:
Q: How often should the electrode maintenance be
Q: Can the product be used in high-temperature
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)

R7C Gold Electrode ORP Sensor Transmitter

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Specifications:

Electrode Types: R7C (Gold Electrode), R7G (Platinum
Electrode)
Output Options: 4-20mA 2-Wire, 4-20mA + RS485
Preamp: Integral Preamp for 2-wire 4-20mA and RS485 direct
sensor to controller connection

Product Usage Instructions:

Installation and Setup:

1. Only authorized personnel should carry out installation,
setup, and operation.

2. Ensure the power cable is physically separated from the power
supply during initial wiring connection or repair.

Safety Information:

– Do not use tools to avoid damaging the product.

– De-pressurize and vent the system before installation or
removal.

– Always confirm chemical compatibility before use and do not
exceed maximum temperature or pressure specifications.

– Always wear appropriate Personal Protective Equipment (PPE)
during installation and service.

Preparation before Measurement:

1. Prepare electrode maintenance by unscrewing the protective
bottle cap and immersing the electrode bulb and liquid interface in
the measured liquid.

2. Use a standard buffer reference solution with a known ORP
value and wash the sensing electrode with distilled water before
use.

Product Features:

– High performance industrial pH sensor for harsh
applications.

– Combines all measurement functions in one compact body.

– Offers various output options for calibration and
communication.

– Digital output allows longer distances without compromising
accuracy.

FAQ:

Q: How often should the electrode maintenance be

performed?

A: Electrode maintenance should be performed before each
measurement to ensure accurate readings.

Q: Can the product be used in high-temperature

environments?

A: Always confirm that the product specifications are not
exceeded, including maximum temperature limits, to prevent
damage.

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ProCon® — R7 Series with
ORP Sensor Transmitter Operating Manual

Direct 4-Wire

M12 Quick Connection
¾” NPT Connection

R7C
Gold Electrode

R7G
Platinum Electrode

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ProCon® — R7 Series with
ORP Sensor Transmitter Operating Manual

Preface
Please read this manual carefully before use. Only properly skilled authorized personnel should carry out installation, setup and operation. Ensure that the power cable is physically separated from the power supply during the initial wiring connection or repair. For example,

Warning | Caution | Danger
Indicates a potential hazard. Failure to follow all warnings may lead to equipment damage, injury, or death.
Note | Technical Notes
Highlights additional information or detailed procedure.

1. Apparent damage to the sensor
2. The sensor does not work properly or provides specified measurements
3. The sensor has been stored for a long time in an environment where the temperature exceeds 70°C

Hand Tighten Only
Over tightening may permanently damage product threads and lead to failure of the retaining nut.

Safety Information

Do Not Use Tools
Use of tool(s) may damage produced beyond repair and potentially void product warranty.

De-pressurize and vent system prior to installation or removal Confirm chemical compatibility before use DO NOT exceed maximum temperature or pressure specifications

Personal Protective Equipment (PPE)
Always utilize the most appropriate PPE during installation and service of Truflo products.

DO NOT alter product construction

ALWAYS wear safety goggles or face-shield during installation and/or service

Preparation before measurement
Important
Be sure to calibrate your sensor prior to use. Please refer to the operating instructions of your ProCon® Controller for calibration details.
Connect the wires from the sensor to the appropriate ProCon® controller. All ProCon® pH sensors come with an internal PT1000 temperature electrode. Refer to sensor wiring diagram of controller.
Prepare electrode maintenance before measurement When using the electrode, the protective bottle at the top shall be screwed off and placed at a place where it is not easy to touch. Then, the protective bottle cap shall be removed and the electrode bulb and liquid interface shall be immersed in the measured liquid.

ORP Sensor Calibration SimplCal®
1. Use a standard buffer reference solution with known ORP value. (always use a fresh buffer solution) 2. Unscrew the sensor protection cap and wash the sensing electrode with distilled water. Carefully wipe any excess water with a soft paper
towel and gently wipe the gold/platinum sheet to keep it clean. 3. Select the calibration mode in the controller (See manual for ProCon® SimplCal® for step by step simple instruction) 4. Insert the sensor into the first reference solution ensure the sensor tip is covered. 5. Stir 6. Wait for the reading to stabilize (60 seconds) 7. Press the Enter button on the ProCon® Controller 8. Wait until the DONE is display on screen 9. Once the sensor has been calibrated rinse with distilled water. Carefully wipe any excess water with a soft paper towel and gently wipe
the gold/platinum sheet to keep it clean. In order to ensure a fast response time, the electrode glass should always be kept wet. After the calibration is completed and the electrode is properly cleaned, store the sensor in a 3mol KCI Potassium Chloride solution. NOTE: After use it is important to inspect the sensor to ensure there are no deposits and the gold/platinum is clean. If needed the sensor can be washed with a dilute HCL acid wash. It is not recommended to store the sensor in distilled , or deionized water.

24-0186 © Icon Process Controls Ltd.

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ProCon® — R7 Series with
ORP Sensor Transmitter Operating Manual

High performance industrial pH sensor for harsh applications

The ProCon® P14 series offers the ultimate combination of durability, functionality and long-term performance; exactly what is required for industry’s most complex applications. The Nexus® reference eliminates reference poisoning. The sensors are available in flat planar or bulb style design.
All measurement functions are combined in one compact body — measuring electrode, temperature sensor and an inner reference chamber. The 2-wire 4-20mA, 4-wire or 4-20mA + RS485 output options simplify calibration and communication with remote displays and controllers..

? M12 Quick Connection ? 4-20mA Output ? Temperature Compensated ? Nexus® Solid KCl Reference ? PP or PPS Body Materials ? RS 485 Modbus Communication ? No Preamp Required ? ¾” NPT Connection

PREEMPT THE PREAMP

Enhanced chip technology allows for remote calibration as well as diagnostic data
Digital output — longer distances without compromising accuracy.

Integral Preamp 2-wire 4-20mA, RS485 direct sensor to controller connection (no preamp)

Nexus® technology · Solid KCI infused reference junction · Eliminates reference poisoning/leaching · Extended life expectancy
2 Durable Sensors Designed for the Toughest ORP Environments

R7C
Gold Electrode

R7G
Platinum Electrode

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ProCon® — R7 Series with
ORP Sensor Transmitter Operating Manual

Smart Sensor Technology
Advanced electronic circuity stores ORP data for automatic sensor recognition and trouble-free calibration when connected to the ProCon® Controller.
Outputs
1. 4-20mA 2-Wire 2. 4-20mA + RS485
Both the measuring and reference electrodes are encapsulated within the non- porous advanced KCl infused polymer known as Nexus®.
Less Calibration and Maintenance
Most sensors require on-going recalibration and are prone to premature failure due to what is known as gradient drift, or sensor drift.
The Nexus® series is a solid reference material. Poisoning or leaching of the reference electrolyte that occurs in standard sensor is greatly reduced.
The Nexus reference helps to eliminate the need for ongoing maintenance or cleaning requirement due to fouling or film build up removal which occurs with many process applications with traditional pH sensors.
Faster Response-Longer Lasting
The solid Nexus® reference provides for faster response time to changing ORP values since there is no requirement for a junction.

? Double junction reference extends sensor life and protects against poisoning ions
? Durable gold/platinum electrode enhances performance and increased reliability
? Operates in sub-zero temperatures down to 14°F (-10°C)
? Advanced electronic diagnostics provides excellent repeatability and reliability

Standard pH Gel Type Nexus® Solid Reference

Reference Poisoning

Reference Sensor
Nexus® Reference
Solid Nexus® KCl infused Junction

Electrode (Gold/Platinum)
Gold/Platinum electrode technology results in an industrial sensor with unequalled durability and reliability (Gold: -2000mV 500mV, Platinum: 500mV 2000mV)

Direct D500 Controller with SimplCal® Auto Calibration

M12 Quick Connection

Direct 4-Wire
Typical Uses
R7C (Gold)
· Highly Acidic · Reducing Environments (Cyanide) · Below 500mV
R7G (Platinum)
· High Oxidation · Chlorinated (Pools, Spas) · Potable Water · Above 500mV

Gold Electrode (R7C)
Platinum Electrode (R7G)
Nexus® Solid Reference
¾” NPT

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ProCon® — R7 Series with
ORP Sensor Transmitter Operating Manual

Specifications

Measurement Range

ORP

-1000mV 1000mV

Output Signal — No Preamp Required

2 Wire Loop Powered | 4-20mA + RS 485 Direct Sensor Output

Accuracy

± 1mV

Operating Temperature

14 to 176°F | -10 to 80°C | Automatic Temperature Compensation

Maximum Pressure

145 Psi | 10 bar

Design

Sensor body

PP Polypropylene (std) | Ryton® | PPS

Reference System

3.3 Mol Ag / AgCl / KCl Double Junction

pH electrode

Gold (R7C) | Platinum (R7G)

Reference

Solid Nexus®

Connection

3/4″ NPT

Measuring Electrode Resistance

< 500 M

Impedance Range

102 675 M

Temperature Compensation/Output- 4-20 + RS485 Model

Pt-1000 (Std)

Pt-100

Dimensions

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ProCon® — R7 Series with
ORP Sensor Transmitter Operating Manual

Temperature Control

Temperature vs. Pressure

In-line Mounting

1. Avoid vertical installation. (air may be present)

2. Optimum installation 15° above

horizontal.

2

3. Process liquid should flow upward.
(for downward flow ensure backpressure is present in

order to avoid air within pipe)

Typical Application

1

22

2

3

534mV

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ProCon® — R7 Series with
ORP Sensor Transmitter Operating Manual

Wiring — Flying Lead

4-20mA 2-wire
Blue: mA Brown: mA+

4-20mA 4-wire
Transparent: 4-20mA Black (thick): Ref White: Temperature Green: Temperature Connects directly to ProCon® controller

Thicker Wire

Wiring — M12
4 Pin M12 Connection

4-20mA | 4 Pin

Color Blue Brown

Description
4-20mA 4-20mA +

4-20mA + RS485 Output
Red: 9-24VDC + Black: 9-24VDC Transparent: 4-20mA Black (thick): Ref Green: RS 485 A White : RS 485 B

Thicker Wire

4 Pin IO – Link Connection

M12 – Female
8 Pin M12 Connection
M12 – Female

4-20mA + Controller | 4 Pin

Color
White Green Black (Thick) Transparent

Description
Temperature Temperature
Reference 4-20mA

4-20mA + RS485 | 8 Pin

Color
Red Black Transparent Black (Thick) Green White

Description
9-24 VDC + 9-24 VDC –
4-20mA Reference RS485 A RS485 B

1

3

I-O Link | 4 Pin

4

Pin
Pin 1 Pin 2 Pin 3 Pin 4

Description 24 VDC +
GND 4-20mA

Model Selection

Part Number R7G-P-D-1-F-M R7G-P-M-1-F-M R7G-P-S-1-F-M

R7G — General Purpose ORP Sensor

Material

Output

Type

PP

4-wire (for ProCon® display)

Flat

PP

4-20mA (2-wire, std)

Flat

PP

RS485 + 4-20mA

Flat

Connection M12 M12 M12

Last digit: “M” for M12 Connection (std) “B” Blind (J-Box) “D” Display (J-Box) “F” Flying Lead

Part Number R7C-P-D-1-F-M R7C-P-M-1-F-M R7C-P-S-1-F-M

R7C — Complex Environment ORP Sensor

Material

Output

Type

PP

4-wire (for ProCon® display)

Flat

PP

4-20mA (2-wire, std)

Flat

PP

RS485 + 4-20mA

Flat

Connection M12 M12 M12

Last digit: “M” for M12 Connection (std) “B” Blind (J-Box) “F” Flying Lead

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ProCon® — R7 Series with
ORP Sensor Transmitter Operating Manual

Fittings

Part Number PSA-2 PSA-3 PSA-4 PSA-6 PSA-8

Easy Install Clamp On Pipe Saddles

Material

Size

Seal

Thread

PVC

2

PVC

3

PVC

4

PVC

6

PVC

8

FPM FPM FPM FPM FPM

¾ NPT ¾ NPT ¾ NPT ¾ NPT ¾ NPT

Connection PVC PVC PVC PVC PVC

Part Number
TUPA-PV-5 TUPA-PP-5 TUPA-PF-5 TUPA-PV-7 TUPA-PP-7 TUPA-PF-7 TUPA-PV-1 TUPA- PP-1 TUPA-PF-1 TUPA-PV-15 TUPA-PP-15 TUPA-PF-15 TUPA-PV-2 TUPA-PP-2 TUPA-PF-2

Material PVC PP PVDF PVC PP PVDF PVC PP PVDF PVC PP PVDF PVC PP PVDF

True Union Tee Fitting

Size 1/2 1/2 1/2 3/4 3/4 3/4 1 1 1 1 1/2 1 1/2 1 1/2 2 2 2

Thread ¾ NPT ¾ NPT ¾ NPT ¾ NPT ¾ NPT ¾ NPT ¾ NPT ¾ NPT ¾ NPT ¾ NPT ¾ NPT ¾ NPT ¾ NPT ¾ NPT ¾ NPT

Part Number
CISSP020 CISSP030 CISSP040 CISSP060 CISSP080 CISSP100 CISSP120 CISSP140 CISSP160 CISSF020 CISSF030 CISSF040 CISSF060 CISSF080 CISSF100 CISSF120 CISSF140 CISSF160

Cast Iron Saddle Fitting

Material

Size

Cast Iron / SS / PVC

2″

Cast Iron / SS / PVC

3”

Cast Iron / SS / PVC

4”

Cast Iron / SS / PVC

6”

Cast Iron / SS / PVC

8”

Cast Iron / SS / PVC

10”

Cast Iron / SS / PVC

12”

Cast Iron / SS / PVC

14”

Cast Iron / SS / PVC

16”

Cast Iron/ SS/ PVDF

2”

Cast Iron/ SS/ PVDF

3”

Cast Iron/ SS/ PVDF

4”

Cast Iron/ SS/ PVDF

6”

Cast Iron/ SS/ PVDF

8”

Cast Iron/ SS/ PVDF

10”

Cast Iron/ SS/ PVDF

12”

Cast Iron/ SS/ PVDF

14”

Cast Iron/ SS/ PVDF

16”

Seal FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings FKM O-Rings

Part Number WAS-2 WAS-6
WPF-SS-2 WPF-SS-6

Weldolet® Pipe Adaptor

Material

Size

PVC PVC SS SS

2”-4” 6”-24” 2”-4” 6”-24”

Connection ¾ NPT ¾ NPT ¾ NPT ¾ NPT

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ProCon® — R7 Series with
ORP Sensor Transmitter Operating Manual
Electrode preservation:
1. Clean the electrode correctly after use 2. Place the electrode in the electrode storage bottle for storage 3. The solution in the protective bottle is 3 mol/L KCI solution
Warranty
Icon Process Controls warrants this product to be free from significant deviations in material and workmanship for a period of one year from the date of purchase. If repair is necessary and has not been the result of abuse or misuse within the warranty period, please return to Icon Process Controls and amendment will be made without any charge. Icon Process Controls Customer Service Center will determine if product problem is due to deviations or customer abuse. Out of warranty products will be repaired on a charge basis. Authorization must be obtained from Icon Process Controls Customer Service Center to issue a RIR number before returning items for any reason. When applying for authorization, please include the date and the reason of return. Instruments must be carefully packed to prevent damage in shipment and insured against possible damage or loss. Icon Process Controls will not be responsible for any damage resulting from careless or insufficient packing. Warning: Damage as a result of inadequate packaging is the user / distributor’s responsibility.

by
Phone: 905.469.9283 · Sales: sales@iconprocon.com · Support: support@iconprocon.com

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ProCon® — R7 Series with
ORP Sensor Transmitter Operating Manual
Use with any of the following controllers — NO PREAMP REQUIRED
SINGLE INPUT
DUAL INPUT

FIVE INPUT

iconprocon.com

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