Mass Flow Controllers
MF50XA4BC3P2CAA
Brooks Instrument MF50X Thermal Mass Flow Controller
About this part
MF50XA4BC3P2CAA is a configured Brooks Instrument MF50X thermal mass flow controller for industrial gases. MF50 identifies the controller size covering 3 sccm through 30 slpm nitrogen-equivalent full-scale ranges, while X identifies the welded-sensor Mfx construction with NEMA 4X/IP66 packaging and hazardous-location approvals. The remaining suffix is configuration-specific; the calibrated gas, exact full-scale range, process connection, seal material and selected signal arrangement must be taken from the instrument nameplate or calibration record
Configurations vary. Verify the exact unit before choosing a replacement.
No archived photo available
Key Facts
Specifications
| Manufacturer | Brooks Instrument |
| Series and model | MF Series, MF50X configured controller |
| Device function | Thermal mass flow measurement and closed-loop gas flow control with an integral solenoid valve and remote setpoint input |
| Sensor construction | Welded, non-removable sensor assembly (Mfx construction) |
| Enclosure | NEMA Type 4X / IP66 watertight industrial enclosure |
| Available MF50 full-scale range | 3 sccm to 30 slpm nitrogen equivalent at 0 °C and 101 kPa; the exact configured full scale is not established |
| Control range | 50:1 |
| Accuracy | ±1% of full scale including linearity at calibrated conditions; ±1.5% of full scale for MF50 ranges above 20 slpm |
| Repeatability | 0.25% of rate |
| Response time | Less than 6 seconds to within 2% of full scale for a 0–100% command change |
| Low-flow cutoff | The control valve closes when the command is below 1% of full scale |
| Maximum operating pressure | 1500 psig (100 bar) for the MF50 controller family |
| Controller differential pressure | 5 to 50 psid |
| Ambient and gas temperature | 5 to 65 °C (41 to 149 °F) |
| Outboard leak specification | 1 × 10^-9 atm·cc/s helium, excluding permeation |
| Supply voltage | 15 to 28 VDC |
| Current requirement | 240 mA at 15 VDC; 370 mA at 28 VDC |
| Setpoint choices | 0–5 VDC or 4–20 mA; exact configured selection is not established |
| Flow outputs | 0–5 VDC plus jumper-selectable 0–20 mA or 4–20 mA output |
| Valve override | Electrical input permits the control valve to be forced fully open or closed |
| Field wiring | Pluggable screw-terminal connections through a watertight cable gland or conduit fitting, depending on configuration |
| Hazardous-location classification | Mfx family: Class I, Division 2, Groups A, B, C and D; Class II, Division 2, Groups F and G; suitable for Class III, Division 2 |
| North American certification | UL Listed and UL Recognized under E73889; classification cited to UL 1604 and CSA C22.2 No. 213 |
| Electromagnetic compatibility | EN 61326 under EMC Directive 89/336/EEC |
Configuration-code interpretation
The published MF50X family literature establishes the base model but does not provide a position-by-position decoder for suffix A4BC3P2CAA. Calibration-dependent and option-dependent details therefore remain nameplate-controlled.
MF50X controller signal terminals
The MF Series terminal-strip assignments applicable to the controller model are shown below. Unused terminals are omitted.
| Terminal | Label | Function |
|---|---|---|
| TB-1/1 | VSUP | Positive supply voltage |
| TB-1/2 | SUPCOM | Supply common |
| TB-1/4 | SUPCOM | Signal common |
| TB-1/5 | VSIG | Voltage flow-signal output |
| TB-1/6 | ISIG | Current flow-signal output |
| TB-2/2 | GND | Chassis ground |
| TB-2/4 | VREF | +5 VDC reference output |
| TB-2/5 | VOR | Valve-override input |
| TB-2/7 | CMDCOM | Command common |
| TB-2/8 | VCMD | Voltage setpoint input |
| TB-2/9 | ICMD | Current setpoint input |
Service safety
Before disconnecting an instrument that has carried toxic, pyrophoric, flammable or corrosive gas, purge it thoroughly with a dry inert gas such as nitrogen. This protects personnel and limits fire, explosion, corrosion and contamination hazards.
Documentation Downloads
Local PDF copiesPart Photos
0 imagesHistorical archive images for identification, labels, connectors, and condition reference, not current inventory.
Historical Listings & Prices
Historical listing data, not a current offerThe typical recorded price range is $182.00 to $198.00. Based on 2 archived listing records; not a current offer, appraisal, or confirmed sale price.
View archived listing titles
- BROOKS MF50XA4BC3P2CAA MF SERIES UNMP
- BROOKS MF50XA4BC3P2CAA MF SERIES ( AS PICTURED) UNMP