Flow Control

0550EB34H2DA

Brooks Instrument Model 0550E Mass Flow Controller

About this part

Brooks Instrument 0550EB34H2DA is a configured Model 0550E gas mass flow controller. The 0550E combines a flow sensor, control valve, integral control electronics, and an AC power supply to measure and regulate gas flow. A photographed calibration certificate for the exact unit identifies a 30,000 sccm hydrogen range, 45 psig inlet pressure, and 21 psig outlet pressure; these are configuration-specific values, not universal 0550E specifications

Configurations vary. Verify the exact unit before choosing a replacement.

No archived photo available

Key Facts

ManufacturerBrooks Instrument Model 0550E
Part number0550EB34H2DA
Product familyConfiguration-specific
Device typeMass Flow Controller
Configuration statusConfiguration varies
Application classIndustrial automation and process equipment
CategoryFlow Control

Specifications

Identification
ManufacturerBrooks Instrument
Product familyModel 0550E
Function
Controlled mediumGas
Operating principleMass-flow measurement with an integral modulating control valve and electronic control circuit
0550E family performance
Accuracy±1% of full scale over the specified range when used at calibration conditions
Specified control range2–100% of full scale
Repeatability0.25% of rate over the specified range
Response timeWithin 2% of full scale of the final value in 5 seconds or less for a step between 3% and 100%, including transitions to or from valve override
Warm-up time40 minutes
0550E family environmental
Operating temperature15–45 °C
0550E family pressure
Standard calibration pressure25 psig
Inlet-pressure range stated by manual10–50 psig; 15–50 psig for 200 slpm hydrogen units
Maximum pressure1500 psig
Leak integrity3 × 10^-8 cc·atm/s helium maximum, inboard to outboard; less than 2% of full scale through the valve
0550E family electrical
Primary power105–125 VAC, 50/60 Hz, 15 W maximum
Command input0–5 VDC at 0.25 mA
Flow outputs0–10 VDC into at least 2 kΩ and 0–1 VDC into at least 1 MΩ
Reference output5 V ±0.2%; 1 kΩ maximum load
Mating connectorAmphenol 165-10
0550E family mechanical
Standard process connections1/4-inch compression fittings
Optional process connectionsOther inch compression fittings, -4 and -8 VCO, and -4 VCR configurations were available
Weight5 lb 10 oz (approximately 2.55 kg)
Reference conditions
Standard flow reference70 °F (21.1 °C) and 760 mm Hg

Configuration-dependent calibration

The 0550E restrictor and control-valve orifice are selected for the calibration gas, full-scale flow, and operating pressures. Brooks documentation warns that changing the gas or calibration conditions can shift the indicated flow and may require a different restrictor, orifice, and recalibration. The exact unit's gas, range, pressure conditions, fittings, and seal materials should therefore be verified from its calibration label or certificate before installation.

Control and installation features

Soft startSelectable flow ramping; normally disabled unless requested on the factory order.
Valve overridePermits full opening or closing independently of the command signal; +10 to +24 VDC opens and -10 to -24 VDC closes.
Valve-limit outputsOpen and closed limit outputs can indicate override operation, gas starvation, or valve malfunction and can sink up to 50 mA.
MountingAny position is permitted, but changing from the factory calibration attitude can produce up to a ±0.5% full-scale shift after re-zeroing.

Compatibility and replacement context

These relationships apply to the 0550E family and do not establish a drop-in replacement for every configured unit.

Applied Materials AFC 550The 0550E manual describes interchangeability with the Applied Materials AFC 550 where the valve-inhibit function is not required.
Brooks 5800-S replacement interfaceBrooks 5800-S documentation offered a 0–5 VDC input and 0–10 VDC output option specifically identified as a 0550E replacement configuration.
Replacement qualificationCalibration gas, full-scale range, operating pressures, process connections, electrical interface, valve behavior, and wetted materials must all be matched.

Documentation Downloads

Local PDF copies

Part Photos

0 images

Historical archive images for identification, labels, connectors, and condition reference, not current inventory.

Historical Listings & Prices

Historical listing data, not a current offer
Archive records1Tracked historical listing records
Historical median price$499.90Based on archived listing records
Recorded price range$499.90 - $499.90Low to high recorded listing price
Local documents2PDF copies available from Sonisys
Recorded price context

The typical recorded price range is $499.90 to $499.90. Based on 1 archived listing record; not a current offer, appraisal, or confirmed sale price.

View archived listing titles
  • BROOKS MASS FLOW CONTROLLER 0550C SERIES 30000- SCCM N2 0550EB34H2DA 45 PSIG

Archived listings

Other Part Numbers & Aliases

0550EB34H2DA