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ORP Electrode with Flathead | 3-2725
Price range: R12,485.00 through R21,104.00
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
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Conductivity Sensor System | 2850
Price range: R22,439.00 through R31,256.00
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
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Signet Paddlewheel Flow Integral Systems | 9900
Price range: R34,311.00 through R58,073.00
Signet Paddlewheel Flow Integral Systems - Overview

Signet has combined the 9900 SmartPro® Transmitter with the 515/8510 and 2536/8512 Paddlewheel Flow sensors to create integrated 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.

Signet Paddlewheel Flow Integral Systems - 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
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Chlorine Dioxide Analyser System | GF 4632

Chlorine Dioxide Analyser System - Overview

This integrated all-in-one system measures Chlorine Dioxide residual up to 2 ppm/mg/l. The clear flow cell accommodates the Chlorine Dioxide and optional pH electrode, flow regulator, filter and variable area flow indicator in one compact unit. The flow regulator has a removable filter and accepts inlet pressures of 1 to 8 bar (15 to 120 psi). It maintains constant flow and minimal pressure on the sensors. Water flow is controlled and directed vertically into the sensor tips eliminating the build-up of air bubbles that can cause inaccurate measurement. The flow cell is also designed to maintain a minimum amount of water to ensure sensors stay submerged, even when the system and flow is turned off. This complete system has everything needed to support chlorine monitoring for 1 full year of operation. The design allows quick and easy installation and comes complete with four 4 to 20 mA outputs, flow switch with relay interrupt, four binary inputs and two mechanical relays. Optionally the 9950-X can be used with the 3-950.395-M (159 001 905) Modbus Module.

Chlorine Dioxide Analyser System - Features
- Reagent free measuring
- Chemical Guard
- Prevents overdosing of chemicals
- Built-in flow switch
- Chlorine Dioxide and pH electrode performance data (optional pH)
- Automatic time stamp after successful calibration
- Customer-enabled alarm feature for re-calibrating
- Quick and easy installation
- Built-in flow regulator - constant flow & pressure regardless of inlet pressure
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Flow Meter Paddlewheel | 2537

Flow Meter Paddlewheel - Overview

This paddlewheel sensor has the added functionality of various output options including multi-functional pulse, flow switch, digital (S3 L) or 4 to 20 mA. It offers low flow, low power and high resolution. It can be configured onsite directly through the built-in user interface. Installation is simple as it utilises the same fittings as the popular Signet 515 and 2536 Paddlewheel Sensors and fits into pipe sizes ranging from DN15 to DN200 (½ to 8 in.). Available in Polypropylene and PVDF. It is ideal for chemical processing, water and wastewater monitoring, and scrubber control.

Flow Meter Paddlewheel - Features
- Digital (S3 L) or 4 to 20 mA outputs or (Multi-function)
- Allows for up to six sensors to Signet 8900 Multi-Parameter Controller
- Low flow capabilities down to 0.1 m/s (0.3 ft/s)
- Polypropylene or PVDF sensor bodies
- Polypropylene and PVDF retaining nuts standard, Valox optional
- Installs into pipe sizes DN15 to DN200 (½ to 8 in.)
- Test certificate included for -X0, -X1
- Low power and high resolution
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DryLoc® pH/ORP Electrodes | Signet 2774-2777

DryLoc® pH/ORP Electrodes - Overview

These high-performance sensors are ideal for a wide range of applications. The unique foul-proof DryLoc® connector with gold-plated contacts is designed specifically for use with the Signet 2751 pH/ORP Smart Sensor Electronics or the 2760 Preamplifier. These dependable and highly responsive electrodes feature a PTFE double reference junction with potassium nitrate (KNO3 ) in the front chamber which blocks various poisoning ions such as Mercury (Hg2+), Copper (CU2+) and Lead (Pb2+). It also has a large reference chamber that extends the service life. The positioning of the temperature element allows the temperature response to be quick and accurate. The electrodes are either flat or bulb-styled. The flat versions allow sediment and particles to sweep past the measurement surface, minimising risks of abrasion, breakage and coating. The bulb versions can be used for low-temperature applications or where fast response is required. Due to the specially designed chambers which keep electrolytes in place, all sensor models can be installed at any angle, even inverted. The quick temperature response is available in either a Pt 1000 or 3KΩ temperature sensor and allows compatibility with all Signet pH/ORP instruments.

DryLoc® pH/ORP Electrodes - Features
- Double reference PTFE junction
- Fouling and dirt build-up resistant
- Ryton (PPS) body
- Broad range of chemical compatibility
- Memory chip enabled
- Patented DryLoc® connector with gold-plated contacts*
- Installation at any angle, even inverted or horizontal
- Temperature sensor (pH)
- Quick temperature response
- Easy sensor replacement using DryLoc electrode connector
- High-temperature versions available
- Mounts into standard ¾ inch threads
- Compatible with all Signet instruments
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