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

QPV QBS GP
Photo image of QBS electronic pressure regulator image of QBS electronic pressure regulator photo of Equilibar GP Series Electronic Pressure Regulator
 Technical Literature Brochure Brochure Brochure
Max Pressure 150 psig
10 bar(g)
500 psig
34 bar(g)
1000 psig
68 bar(g)
Max Flow 1 SCFM
28 SLPM
1.2 SCFM
34 SLPM
10 SCFM
280 SLPM
Accuracy +/- .25% FS +/- .25% FS
Repeatability +/- .02% FS +/- .02% FS +/- .2% FS
Porting 1/8″ NPT female 1/8″ NPT female 1/8″ NPT female
Max inlet pressure 165 psig
11 bar(g)
550 psig
38 bar(g)
1100 psig
75 bar(g)
Enclosure IP65 IP65 IP65
Manifold/valve material Aluminum Aluminum Brass
Max operating temperature 158°F
70°C
158°F
70°C
158°F
70°C
Control Scheme 0-10 VDC
4-20 mA
0-10 VDC
4-20 mA
0-10 VDC
4-20 mA

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-150 EPR-500 EPR-1000 EPR-3000
Photo
 Technical Literature Brochure Brochure Brochure Brochure
Max Pressure 150 psig
10 bar(g)
500 psig
34 bar(g)
1000 psig
68 bar(g)
3000 psig
206 bar(g)
Max Inlet Pressure 115% of maximum calibrated range 115% of maximum calibrated range 115% of maximum calibrated range 115% of maximum calibrated range
Accuracy +/- .25% FS +/- .25% FS +/- .25% FS +/- .25% FS
Repeatability +/- .08% FS +/- .08% FS +/- ..08% FS +/- .08% FS
Operating Range / Turndown 0.5% to 100% Full Scale / 200:1 Turndown 0.5% to 100% Full Scale / 200:1 Turndown 0.5% to 100% Full Scale / 200:1 Turndown 0.5% to 100% Full Scale / 200:1 Turndown
Porting 1/8″ NPT female 1/8″ NPT female 1/8″ NPT female 1/8″ NPT female
Enclosure IP40 IP40 IP40 IP40
Manifold/valve material Stainless Steel Stainless Steel Stainless Steel Stainless Steel
Max operating temperature 120°F
50°C
120°F
50°C
120°F
50°C
120°F
50°C
Control Scheme 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
Push Buttons on Front
4 – 20 mA
0 – 5 VDC
RS485
Read More about using an electronic pressure regulator to pilot a dome loaded pressure reguator 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

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