All Myron L Company pH and Oxidation Reduction Potential or ORP (REDOX) sensors are combination pH/reference, or ORP/reference. These sensors are designed to operate exclusively with the Myron L Company 720 Series II pH and ORP Monitor/controllers. Each sensor has a uniquely designed, built-in isolated preamplifier that guarantees accurate and reliable measurements - completely eliminating ground-loops and noise issues. The preamp allows for longer distances between the sensor and Monitor/controller without the loss of accuracy or reliability due to cable capacitance, resistance, or noise.Our preamp is so simple and low cost that we build it right into the sensor, thus allowing for a truly sealed sensor system - no O-rings to become damaged and leak, no BNC connectors to corrode and cause unreliable readings. It is actually no more expensive than the BNC connectors and coax cable it replaces.All pH sensors include a built-in Temperature Sensor for automatic Temperature Compensation (TC). The TC may be disabled, requirements per USP, or if a separate temperature device is required for your SCADA system.All bodies are made of Schedule 80 Chlorinated Polyvinyl Chloride (CPVC) or Ryton Polyphenylene Sulfide (PPS) to withstand the demanding requirements of most applications. Choice of double ended 1/2"" or 3/4"" MNPT body allows for ease of installation in either in-line or submersion applications. All Myron L sensors are completely encapsulated and sealed to keep out moisture and to assure long life under demanding conditions. Just install and use. Overall length is 165 mm/6.5 in. Standard cable length is 3 meters/ 10 ft. Sensors may be ordered with 8 meter/25 ft. or 30 meter/100 ft. lengths. Cable may be extended simply and without problems. We recommend a junction box to protect the splice.For in-line use, simply install sensor into female threaded fitting or tee. For submersion use, simply install into user supplied pipe coupling and extension pipe.Heavy DutyLow Cost In-line/Submersion pH and ORP Sensors.The Heavy Duty ""F"" utilizes a FLAT-TIP self cleaning sensor (flat glass in place of a round bulb) for use where the most demanding applications are found, such as wastewater. The flat tip will last longer in most abrasive and/or oily solution environments. These sensors utilize a HDPE (High Density Polyethylene) Double Junction reference with a high temperature - chemical resistant acrylamide gel. Response time, generally 95% in five seconds. For continuous use 100°C/212°F at 3,45 bar/50 psi, 81°C/178°F at 5,86 bar/85 psi, and 76°C/169°F at 6,9 bar/100 psi. Six (6) month shelf life. This sensor may be installed in ANY direction including INVERTED, and is simply the BEST sensor for tough applications.Advantages:Built-in isolated preamp guarantees accurate, trouble free operation.Temperature Sensor built-in for automatic Temperature Compensation (may be disabled as required).All sensors are double ended MNPT for simple in-line or submersion applications.All sensors are pH/reference, or ORP/ reference, or a combination of the two.CPVC/Ryton bodies assure compatibility in most applications.All sensors are completely encapsulated and sealed.Sensor cable may be extended simply, without problems.All ORP sensors have an extended tip Platinum electrode except ""F"" models.Heavy Duty ""F"" models may be installed in ANY direction, including inverted.For more information, please see Data Sheet