Electronic Pressure Regulators | Pressure Control | Equilibar
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Equilibar Electronic Pressure Regulators

Precision Analog and Digital Electronic Pressure Regulators

Equilibar is proud to offer a wide range of precision electronic pressure regulators (EPR). Full scale ranges available from 0.3 psig (20 millibar(g)) to 3000 psig (68 bar(g)). Our EPR offerings are available in standard analog style or high performance digital display style. These pressure controllers are useful for a variety of applications, and are also frequently used to provide the pilot setpoint for our dome loaded back pressure regulators. Many pressure ranges are available with ultra high resolution performance. Our engineers will work with you to find the right solution to your automation challenge. Our products are 100% designed and manufactured in the USA, and are supported by one-year warranty.

Standard Analog Electronic Pressure Regulators

QPVQBSGP
Photo Photo of Equilibar QPV Electronic Pressure Regulator image of QBS electronic pressure regulator photo of Equilibar GP Series Electronic Pressure Regulator
 Technical LiteratureBrochureBrochureBrochure
Max Pressure150 psig
10 bar(g)
500 psig
34 bar(g)
1000 psig
68 bar(g)
Max Flow1 SCFM
28 SLPM
1.2 SCFM
34 SLPM
10 SCFM
280 SLPM
Accuracy+/- .25% FS+/- .25% FS
Repeatability+/- .02% FS+/- .02% FS+/- .2% FS
Porting1/8″ NPT female1/8″ NPT female1/8″ NPT female
Max inlet pressure165 psig
11 bar(g)
550 psig
38 bar(g)
1100 psig
75 bar(g)
EnclosureIP65IP65IP65
Manifold/valve materialAluminumAluminumBrass
Max operating temperature158°F
70°C
158°F
70°C
158°F
70°C
Control Scheme0-10 VDC
4-20 mA
0-10 VDC
4-20 mA
0-10 VDC
4-20 mA

 *None of these models are intended for hazardous/explosive environments. They are meant for use with air or inert gases only

High Performance Digital Electronic Pressure Regulators

The EPR Series is a high resolution electronic pressure regulator series. The EPR provides a regulated output pressure that is proportional to an electrical command signal input. The EPR units are available in a wide range of calibrated ranges covering vacuum through 3000 psig (200 Bar). The EPR is available with 4-20 mA or 0-5 VDC analog input signal types, and RS-232 or RS-485 (optionally) serial digital inputs.

EPR-150EPR-500EPR-1000EPR-3000
Photo
 Technical LiteratureBrochureBrochureBrochureBrochure
Max Pressure150 psig
10 bar(g)
500 psig
34 bar(g)
1000 psig
68 bar(g)
3000 psig
206 bar(g)
Max Inlet Pressure115% of maximum calibrated range115% of maximum calibrated range115% of maximum calibrated range115% of maximum calibrated range
Accuracy+/- .25% FS+/- .25% FS+/- .25% FS+/- .25% FS
Repeatability+/- .08% FS+/- .08% FS+/- ..08% FS+/- .08% FS
Operating Range / Turndown0.5% to 100% Full Scale / 200:1 Turndown0.5% to 100% Full Scale / 200:1 Turndown0.5% to 100% Full Scale / 200:1 Turndown0.5% to 100% Full Scale / 200:1 Turndown
Porting1/8″ NPT female1/8″ NPT female1/8″ NPT female1/8″ NPT female
EnclosureIP40IP40IP40IP40
Manifold/valve materialStainless SteelStainless SteelStainless SteelStainless Steel
Max operating temperature120°F
50°C
120°F
50°C
120°F
50°C
120°F
50°C
Control SchemePush Buttons on Front
4 – 20 mA
0 – 5 VDC
RS485
Push Buttons on Front
4 – 20 mA
0 – 5 VDC
RS485
Push Buttons on Front
4 – 20 mA
0 – 5 VDC
RS485
Push Buttons on Front
4 – 20 mA
0 – 5 VDC
RS485

 *None of these models are intended for hazardous/explosive environments. They are meant for use with air or inert gases only

Read More about using an electronic pressure regulator to pilot a dome loaded pressure regulator for automated process control.


Application Focus:
Automated Pump Pressure Control System

The schematic at right shows how an Equilibar Back Pressure Regulator can work together with an electro-pneumatic regulator to provide automated pressure control with virtually any type of pump.


schematic showing Equilibar precision back pressure regulator used with automated electronic pressure regulator supplying the set-point

Equilibar News
interpret 2021

Q&A with Ryan Heffner following INTERPHEX, the conference for biopharmaceutical engineering

Equilibar’s Ryan Heffner and Jeff Jennings recently returned from the INTERPHEX global conference in New York City.  This was the first major conference Equilibar has participated in since COVID arrived in early 2020. INTERPHEX focuses on the biopharmaceutical market, which has been in the spotlight for the past two years as multiple vaccines and medications Read More

Read More