Control & SCADA

Effective process control is essential to quality assurance, cost savings, plant safety, and regulatory compliance. To meet your technical needs while enhancing economic performance demands dependable and often sophisticated solutions. Neal Systems offers a broad range of products spanning process controllers, process visualization, data acquisition, and wireless applications to help you manage your continuous work processes. Our team of engineers has the knowledge and experience to provide a quality solution to meet your needs and budget.

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See our Top FAQs for Control & SCADA.

Click below to see our Control & SCADA solutions for your application need:




EUROTHERM Process Controllers (EPCs)

Eurotherm’s all-new EPC3000 is a series of high precision, mid-range controllers built to help deliver an efficient and secure process with a new array of functions and an emphasis on precision, durability and cybersecurity. The EPC3000 range of programmable single loop process and temperature controllers maximizes efficiency and repeatability and is certified for cybersecurity communications robustness.


Eurotherm PLCs stand apart from the rest in their ability to do high accuracy temperature measurement and control (0.1 degrees C control is common) as well as doing redundant data acquisition, all in one integrated system. With triple redundancy data security, analog and digital inputs, and superior precision, Eurotherm PLCs offer versatile and cost-effective solutions.


The advanced Eurotherm PID algorithm and autotune features draw upon the experience of 50 years of superior control performance especially in temperature applications.


Foxboro’s 43AP Series Pneumatic Indicating Controllers continuously indicate and control pressure, vacuum, temperature, or flow with these features:

  • Wide Selection of Direct Connected Measurement Elements
  • Broad Choice of Control Modes
    • On/off, proportional, proportional plus derivative, proportional plus integral (reset), proportional plus integral (reset) plus derivative, differential gap, and automatic shutdown
  • Internal Bumpless Auto/Manual Transfer
    • Smooth internal switching
  • Weatherproof
    • Glass-fiber reinforced case, gasketed door
    • NEMA Type 3 protection
  • Accuracy Unaffected by Mounting Measurement element and control unit mounted on rigid steel plate
  • 43AP Pneumatic Indicating Controllers Product Specifications


ICONICS embraces the open-communication standards, OPC and OPC UA, the widely accepted solution for intercommunicating different hardware and software. The ICONICS solution for SCADA provides a complete view of your operation, including sparkling 3D graphics, trending, reporting, and alarming. The ICONICS solution is scalable to meet the needs of your operation now and in the future. It has been installed on varied customer applications – from just a few hundred monitored points to several million points – monitored from a single location.


GENESIS32 is the industry’s first fully scalable suite of OPC, SNMP, BACnet and web-enabled HMI and SCADA applications. GraphWorX32 is a human-machine interface (HMI) software package offering unparalleled tools for easily creating the content to support efficient operations.


GENESIS64 is designed from the ground up to take advantage of OPC and OPC-UA, PLC, BACnet .NET-managed code, Silverlight, and SharePoint technology. GraphWorX64 is at the core of the GENESIS64 product suite, offering an HMI and SCADA data visualization tool for building scalable, vector-based, intuitive graphics to give a full picture of operations.


For a complete baseline assessment of your facility’s SCADA system, Neal Systems offers Woodard & Curran SCADACheck. This service provides a full SCADA evaluation including risk assessment, prioritized recommendations, and a cost breakdown, giving you the planning tool you need to make smart investment and operational decisions.

Electrical Heat Power Control


The Eurotherm line of EPower, EPack, and EFit are unique in their ability to customize settings for any application including constant load, variable resistance, inductive load, single phase, multiphase, and more. Also unique are their networking capabilities including Ethernet IP, Modbus, and other communication protocols. Eurotherm’s EPower controller uses Predictive Load Management, which predicts energy usage in addition to reacting to it, thereby preventing the overshooting of the nominal power.


Power controllers to drive complex and transformer coupled loads and to take inputs from discrete controllers and programmable logic controllers.


To drive resistive heating elements from a few watts up to hundreds of KW.


Continental’s Solid State Relays have no moving parts meaning they are quieter, switch faster, require less power and, when properly applied, can last 10-1,000 times longer. Continental was the first company to produce a fully integrated DIN rail-mountable solid state relay with heat sink and has recently introduced their Superior Surge Survival™ technology.

Top FAQs

Q: What is a limit controller?
Limit controllers are a specific type of process or temperature controller whose alarm outputs latch when energized and must be manually reset.
Q: Why must a controller be tuned and, if so, when?
Process controllers must be tuned because no two processes are alike. What works for one will not necessarily work for another. Tuning can be performed anytime an installation occurs, when a new component is installed, or anytime the installers feels that better performance can be obtained. It is solely up to the end user and the process that is being controlled.
Q: What is a PID/Process Controller?
This type of feedback controller has a single-loop (one channel of control) and uses a PID (Proportional-Integral-Derivative) control algorithm. The output (control variable, or CV) of this controller is based on the error created by a user-defined set point (SP) and a process measurement (process variable, or PV). The PID algorithm defines how each element acts on the error signal created as follows:

  • The proportional term simply responds proportionally to the current size of the error.
  • The loop controller calculates a proportional term value for the PID calculation.
  • When the error is zero, the proportional term is also zero.


  • The integral (or reset) term integrates (i.e., sums) the error values.
  • Starting from the first PID calculation after entering auto-mode, the integrator keeps a running total of error values.
  • The running total represents the constant output required to hold the current PV.


  • The derivative (rate) term responds to change in the current error value from the error used in the previous PID calculation.
  • It anticipates the probable growth of the error and generates a contribution to the output in advance.
Q: What are the color codes for American and Canadian thermocouples?
All American/Canadian thermocouples follow the American National Standards Institute (ANSI) color standard for wire coloration. Jacket color may sometimes be the main wire color, but this is not a dependable means for determining the thermocouple type.

  • Type J – White/Red
  • Type E – Purple/Red
  • Type K – Yellow/Red
  • Type T – Brown/Red
  • Type N – Orange/Red (Red is always Negative)