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SMC > Instrumentation > Electronic Pneumatic Regulators
Electronic Pneumatic Regulators
Electronic Regulator photo
Series ITV2000

Stepless control of air pressure in proportion to an electric signal.
Bright and easy to read LED display.

Air consumption is near zero L/min (ANR) at desired set pressure (balanced condition.) Zero and span adjustment is possible with no air pressure.

Working Principles

When the input signal rises, the air supply solenoid valve turns ON, and the exhaust solenoid valve turns OFF. Therefore, supply pressure passes through the air supply solenoid valve and is applied to the pilot chamber. The pressure in the pilot chamber increases and operates on the upper surface of the diaphragm.

As a result, the air supply valve linked to the diaphragm opens, and a portion of the supply pressure becomes output pressure. This output pressure feeds back to the control circuit via the pressure sensor. Here, a correct operation functions until the output pressure is proportional to the input signal, making it possible to always obtain output pressure proportional to the input signal.


Tapped exhaust port • Gauge Port as standard • IP65 protection standard • Bright and easy to read LED display • 4 input current/voltage range options • 2 pressure output options: 0 - 15psi and 0 - 120psi • 1 vacuum output options: 10mmHg - 60mmHg1 • Plug-in wiring with removable cable, (right angle plug.)

  Order Info:  
Pressure Output
0 - 15psi 4 - 20ma $395.00
0 - 120psi 4 - 20ma $395.00
10 - 600mmHg 4 - 20ma $395.00
0 - 15psi 0 - 5VDC $395.00
0 - 120psi 0 - 5VDC $395.00
10 - 600mmHg 0 - 5VDC $395.00

SMC Pneumatics offers you top quality electronic pneumatic regulators for all of your industrial systems and operations. You may have come across multiple terms used to refer to these devices including:

  • Electronic pressure controllers
  • Electro-pneumatic transducers
  • Electronic pressure valves
  • Pressure reducing valves
  • Electronic pressure transducers

Electronic Pneumatic Regulator Units By SMC Pneumatics

Pneumatic regulators from SMC Pneumatics feature:

  • Stepless manipulation of air pressure related to the electrical signal
  • Bright, highly visible and legible LED display
  • Air consumption at almost zero L/min (ANR) at the desired set pressure (balanced condition)
  • Zero and span adjustment may be had with zero air pressure

How Pneumatic Regulators From SMC Pneumatics Operate

When the input signal rises up, the air supply solenoid valve flips “on”, and the exhaust solenoid valve switches “off”. When this happens, the pressure through the air supply solenoid valve is applied to the pilot chamber. The pressure in the pilot chamber grows and causes the upper surface of the diaphragm to operate.

Because of this operation, the air supply valve linked to the diaphragm opens, and a portion of the supply pressure becomes output pressure. This output pressure is directed back to the control circuit by means of the pressure sensor. Here, the valve operates until the output pressure is proportional to the input signal, making an output pressure proportional to the input signal always available.

What Do Electronic Pneumatic Regulators Do?

Electronic pneumatic regulators, which are often called pressure-reducing valves, maintain a constant output flow within a compressed air system even if there are fluctuations in the incoming pressure prior to the regulator piece itself.

These valves perform the following actions to regulate the flow of fluid:

  • Loading
  • Sensing
  • Acuating
  • Control elements

Classifications of regulator valves to know:

  • General purpose
  • Special purpose
  • Precision

What Are General Purpose Pneumatic Pressure Regulators Used For?

General purpose pneumatic pressure regulators are used for a wide range of common industrial compressed air systems. General purpose regulators are great because they offer a long service life. They are easy to maintain and tend to be an affordable option as well.

Precision Regulators: For High Precision Pneumatic Control Systems

Regulated pressure applications that need highly precise measurements can be controlled with precision regulators. If you have some outcome within your process that has a close dependency on accurate pressure control, these regulators are critical.

When To Use Special-purpose Regulators

As you can probably guess, special-purpose regulators have a distinct configuration. Sometimes these are less common mass-produced items, in other cases, they might be customized. They are often called for in systems that work with fluids aside from compressed air. Some of these are relatively simple, while other special-purpose regulators can be highly complex.

Standard Operation Of Pneumatic Regulators

Basic to all electronic pneumatic regulators are the following operations:

  • Loading
  • Actuating
  • Control components

Typically, a regulator uses a simple wire and coil springs to manipulate downstream pressure. These springs come in various coiling strengths and sizes. When you have various spring sizes, you can use them to allow regulation to the secondary pressure within a given range. The ideal required pressure should be in the center third of the rated outlet pressure range. Once you’re in the lower region of the pressure range, the spring’s sensitivity decreases while it gets close to maximum capacity at the high end.

Regulators can sense downstream pressure using either a piston or diaphragm. Between the two, diaphragms tend to be more sensitive and react faster than pistons. That’s one aspect you can consider when you are trying to determine which one you should use. Use diaphragms where sensitive pressure settings are needed (under 0.04 psi.). For a more rugged option, choose a piston system. Pistons tend to offer a larger, more effective sensing area for a given size of a regulator. They offer a larger sensing area if you need a bigger sensing area for some reason.

Understanding Pressure Droop

When the valve first opens, that’s when pressure droops become the most pronounced. The following factors are common causes of droops:

  • Load change with spring extension
  • Effective area chance with diaphragm displacement
  • Unbalance of area forces on the valve

The degree of output pressure changes with alterations in supply pressure is referred to as the regulation characteristic. It is influenced by the ratio of the diaphragm area to the valve area and the degree of valve imbalance.

Factors To Know When Choosing A Pressure Regulator

You need to know:

  • The normal line pressure
  • Min./max. Regulated pressure needed (Regulators can be adjusted to a large degree, but a special spring or other accessory purchase may be needed)
  • Min./max. Pressure should be within the middle third of the regulator range
  • Max. flow required at regulated pressure
  • Size of the pipe- locations adapters are required (must work with flow requirements)
  • Adjustment frequency for regulators (you have numerous adjustment options)
  • The degree of precision you need in your pressure
  • Options and accessories (gages, custom mounting)
  • Double check all environmental conditions/fluids are compatible with all materials used
  • Plan for special features such as high relief or remote control

What Happens If My Pneumatic Regulator Fails?

You may need to prepare for this possibility with a damper or relief valve that can guard personnel or equipment against injury and damage. You may also need positive valve shutoff for dead-end service or intermittent actuation, bleed units, or close control of pressure relief points. Consider filters, lubricators, relief devices and other system features when you are creating your process.

Contact SMC Pneumatics To Learn More About Electronic Pneumatic Regulators?

If you have any more questions about electronic pneumatic regulators or any other units we offer, contact SMC Pneumatics online to learn more. We have helped numerous industries install pneumatic systems that serve them well for the long term. If you have any questions about which pieces and systems you need to operate well together, SMC Pneumatics would be happy to lend our expertise.