Tag: Cooling Tower

Cooling Tower

  • DryLoc pH/ORP 2724

    ORP Electrode with Flathead | 3-2725

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    ORP Electrode with Flathead 3-2725 Overview

    The Signet pH and ORP electrodes are ideal for a wide range of harsh applications with low concentrations of poisoning ions, and chemicals that react with silver ion, Ag+. The superior glass formulation provides excellent chemical resistance in acidic and alkaline/caustic environments. The large area PTFE reference junction, salt bridge, and reference electrode are constructed to increase the total reference effectiveness, resist chemical attack, help resist coating, and ensure long service life in harsh applications. The DryLoc® connector with corrosion-resistant gold plated contacts readily connects the sensor to the mating 2751 pH/ORP Smart Sensor Electronics.

    The robust PPS threaded sensor body and choice of flat, bulb pH, or flat ORP sensing elements provide a broad range of chemical compatibility for a wide variety of applications. There is an optional pH sensing version available for applications with HF. The HF version is for applications where traces of hydrofluoric acid (2% or less) will attack standard pH glass. The quick temperature response is available in a Pt1000 temperature sensor and allows compatibility with the Signet 8900, 9900, and 9950 instruments.

    The sensors incorporate ¾ inch NPT or ISO 7/1-R 3/4 threads for installing into standard pipe-tees. They can also be mounted directly into Signet standard fittings, DN15 to DN100 (½ to 4 inches).

    ORP Electrode with Flathead 3-2725 Features

    • Enhanced reference chemistry to resist chemical poisoning and prolong the life of the electrodes in harsh environments
    • PTFE reference junction resists fouling and chemical attack
    • Superior pH glass formulation for excellent chemical resistance in acidic and alkaline/ caustic environments
    • PPS body for a broad range of chemical compatibility
    • Memory chip-enabled for access to a range of unique features when connected to the Signet 2751 pH/ORP Smart Sensor Electronics
    • Patented reference design for exceptional performance*
    • Patented DryLoc® connector with gold plated contacts
    • Mounts in Signet standard fittings from DN15 to DN100 (½ to 4 in.) or standard pipe fitting, 3/4" NPT or ISO 7/1-R 3/4
    • Special design allows for installation at any angle, even inverted or horizontal
    • Quick temperature response
    • Bulb and flat HF resistant glass available for trace HF, in less than 2% concentration applications


  • Combined Conductivity Electrode and electronics.

    Conductivity Sensor System 2850

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    Overview of Conductivity Sensor 2850

    The Signet 2850 Conductivity/Resistivity Sensor Electronics are available in various configurations  for maximum installation flexibility. The universal mount version is for pipe, wall, or tank mounting and enables single or dual (digital versions only) inputs using any standard Signet conductivity/resistivity sensor. The threaded j-box version can be used with these same Signet sensors for submersible sensor mounting. It is also available as a combined integral system configuration for in-line mounting and includes a conductivity electrode in a choice of 0.01, 0.1, 1.0,10.0 or 20.0 cm-1 cell constants. The 2850 is ideal for applications with a conductivity range of 0.055 to 400,000 μS or a resistivity range of 18.2 MΩ to 10 kΩ.

    All 2850 units are available with a digital (S3L) output, or  a single 4 to 20 mA. The digital (S3L) output version can be paired with the 9900 or 9950 Transmitter to extend the distance between the measuring points to 120 m (400 ft).

    The 8900 Multi-Parameter Controller allows for up to six 2850 (S3L) output conductivity sensors to be used with the Signet 8900 Multi-Parameter Controller. All 2850 units are built with NEMA 4X/IP65 enclosures which allow output wiring connections with long cable runs of up to 305 m (1,000 ft).

    The two-wire 4 to 20mA output version is available with eight 4 to 20 mA output ranges for each electrode cell constant. Each range can be inverted and is field selectable.

    EasyCal is a standard feature that automatically recognizes conductivity test solution values for simple field calibration. A certification tool is available for validation of the sensor electronics according to USP requirements.

    Conductivity Sensor system Features

    • Test certificate supplied with all sensors
    • Custom cell constant programmed into the electronics
    • Integral mount systems for quick and easy installation
    • Compact design for maximum installation flexibility
    • Extends the distance between the measuring point and the 9900 Transmitter to 120 m (400 ft)
    • Digital (S3L) interface or two-wire 4 to 20mA output
    • EasyCal with automatic test solution recognition
    • For use with ALL Signet conductivity electrodes
  • Flow System Transmitter 9900

    Paddle Wheel Flow Meter with Integral Transmitter 9900

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    Signet has combined the 9900 SmartPro® Transmitter with the 515/8510 and 2536/8512 Paddlewheel Flow sensors to create integral systems that are easy to order and simple to install. Integral systems are also available in conductivity, level, temperature, and pressure configurations.

    Each integral system features a 9900 Transmitter which provides a local and easy to read LCD display. The push button keypad makes it easy to navigate through the transmitter’s menu. The DC-powered 9900 features a scalable 4 to 20 mA output and open collector for process control.

    Flow Integral Systems with 9900 Transmitters are combined with Signet’s field-proven Models 515/8510 and 2536/8512. These sensors reliably perform in flow ranges from 0.3 to 6 m/s (1 to 20 ft/s) and 0.1 to 6 m/s (0.3 to 20 ft/s) respectively for pipe sizes from ½ to 8 inches. They are available in a variety of materials including polypropylene and PVDF and are easily mounted in the pipe using Signet’s comprehensive line of standard fittings.

    Paddle wheel Flow meter Features

    • Warning LED indicator
    • Selectable error mode for current outputs, 3.6 mA or 22 mA
    • Large auto-sensing backlit display with “at a glance” visibility
    • Local display for sensor mounted instruments
    • Provides 4 to 20 mA output
    • "Dial-type" digital bar graph
    • NEMA 4X/IP65