M-11

Product Description

The Model 11 process ORP sensor features the Plunger ORP electrode design, which permits 360o sensor mounting. The porous Teflon liquid junction resists fouling and chemical attack. Double junction reference cells increase the service life in applications containing sulfides (H S) and metals such as lead, mercury and silver. The new cast-in-place solid 2 reference electrolyte helps maintain a constant reference cell potential by resisting dilution over time with pressure and temperature changes. The new capillary temperature sensor design places the PT100 or PT1000 TC behind the ORP-sensitive membranes for accurate temperature compensation and measurement. The TOP68 quick disconnect cable system provides ease of use and the reliability of fixed cable. The IP68 environmental rating protects the high-impedance ORP electrode signal from moisture resulting from condensate build up in submersion pipes.

Product Parameters

Configure the transmitter and electronics based on application, environment, and compliance requirements.

Parameter

Specification

Measuring Range

(-1500) to (+1500) mV

Response Time @ 25°C

95% of reading in 10 seconds

Asymmetry Potential

7.0 pH ±0.2 pH

Theoretical Slope

±59.16 mV / pH unit @ 25°C (77°F)

Sodium Error

< 0.05 pH in 0.1 Molar Na⁺ Ion @ 12.8 pH

pH Glass Bulb Impedance @ 25°C

150 Megohms

Body Material

Ryton®

O-Rings

Viton®

Temperature Range

1) 0 to 80°C (32 to 176°F) Standard Version 2) 0 to 110°C (32 to 230°F) High Temp Version

Pressure Range

1) 0 to 6.9 bar (0 to 100 psig) Standard Version 2) 0 to 10.3 bar (0 to 150 psig) High Temp Version

Drift

< 2.0 mV/week

Option	Code	Description
Temperature Compensation	PT 100	100Ω RTD
Temperature Compensation	PT 1000	1000Ω RTD
Solution Ground	SG	Solution Ground
Temperature Compensation	3KTC	3000Ω Thermister
Quick Disconnect	T68	TOP68 Quick Disconnect
Preamplifier	AMP	Integral Unity Gain Preamplifier
High Temperature Version	HT	For continuous high temperature use, >80°C (176°F)
High ORP Version	ORP	Platinum ORP electrode
High ORP Measurement	ORP	For continuous high ORP use, >11.0 ORP

Need more technical details?

Download the complete product catalogue for detailed specifications, dimensions, certifications, and application guidance.

Download Catalogue Enquire Now

Applications

Electronet instruments are widely deployed across multiple industries and utilities for reliable monitoring and control of critical process parameters.

Industry	Key Applications
Water & Wastewater	Monitoring oxidation-reduction potential (ORP) in drinking water, wastewater treatment plants, and effluent treatment systems
Chemical & Petrochemical	ORP monitoring for chemical dosing, oxidation processes, reduction reactions, and process control
Power Generation	Monitoring ORP in cooling water, condensate systems, and water treatment processes
Food & Beverage	Monitoring ORP in process water, cleaning and sanitization systems, and food processing applications
Pharmaceutical & Biotechnology	ORP monitoring in purified water systems, CIP processes, and pharmaceutical manufacturing
Pulp & Paper Industry	Monitoring ORP during bleaching, chemical treatment, and wastewater management
Water Disinfection Systems	Controlling chlorination, ozonation, and other disinfection processes through ORP measurement
Acid & Caustic Neutralization	Monitoring oxidation-reduction conditions during neutralization and pH adjustment processes
Industrial Process Control	Continuous ORP monitoring for oxidation, reduction, and chemical process optimisation
Plant Effluent Monitoring	Monitoring ORP levels before discharge to ensure compliance with environmental regulations
Mining & Metals	ORP monitoring in leaching processes, wastewater treatment, and chemical recovery systems
Environmental Monitoring	Monitoring ORP in rivers, lakes, reservoirs, and industrial discharge points for water quality assessment