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New! Cordis Electronic Flow Controller

Precise, linear flow control within a closed-loop system with ultra high resolution and repeatability.

The Cordis flow controller utilizes an extremely fast-reacting mems technology sensor upstream from a proportional valve, with the option of a DR-2 regulator for accurate and precise pressure control in a small package. Unlike other mass flow controllers that require a 30 minute warm-up time, large differential pressures, and limited flow ranges, the Cordis requires less than one minute warm-up, its pressure drop is ≤14" H2O, and it features flow ranges as low as 0 to 30 sccm. Standard control options include 0.2 to 10 VDC, 4.32 to 20 mA, and 3.3 VDC Serial.

Electronic Proportional Pressure Controls

Primary Cordis Benefits:

  • 50:1 turndown ratio
  • Compact size and weight
  • ≤14" H2O pressure drop
  • <1 minute warm-up
  • Multiple low flow ranges
  • <50 ms response time
  • ≤25 mV resolution
  • Optional integrated regulator
  • OEM style card unit or IP65 housed for light industrial applications


The Cordis flow controller uses a microcontroller, integral flow sensor, DR-2 regulator, and one proportional valve. Supply gas is connected to the regulator which accurately maintains pressure to the flow sensor and the Clippard EVP or DVP proportional valve. As command is increased, the comparative circuit opens the valve to allow flow to pass through the onboard flow sensor. This provides an active feedback signal for the microcontroller to satisfy the flow setpoint in the process. If at any point the flow sensor detects a value higher or lower than the setpoint command, the proportional valve will modulate more or less output to maintain a stable and accurate control of flow in the process.

Looking for pressure control?
Check out the Cordis EPR.

Consult Clippard for application specifications to confirm viability.

Medium   Clean, dry, non-corrosive gases  

Wetted Material   Sensor:  Polyamide
Manifold: Anodized aluminum
Regulated Supply: ENP Brass
IP65 Housing: Polycarbonate
EVP Valve: Specifications
DVP Valve: Specifications

Valve Type:   Normally-closed proportional

Operating Flow Range   Minimum: 0 to 15 sccm
Maximum: 0 to 6 l/min

Flow Range Sensors   0 to 0.03 l/min, 0 to 0.2 l/min, 0 to 0.5 l/min, 0 to 1 l/min, 0 to 4 l/min, 0 to 6 l/min

Max. Inlet   60 psig

Response Time   <50 ms (application dependent)

Accuracy   ≤2% of full scale

Resolution   ≤25 mV

Max. Hysteresis   ≤1%

Repeatability   ≤1%

Linearity   ≤1%

Pressure Drop   ≤14" H2O

Port Size   1/8" NPT, G1/8

Temperature Range   32 to 120°F

Voltage   15 to 24 VDC

Current Draw   ≤250 mA max.

Protection Rating   IP65 (housed unit only)

Warm-Up Period   <1 minute

Signal/Command   0.2 to 10 VDC, 4.32 to 20 mA, 3.3 VDC Serial

Turndown Ratio   50:1

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