MG-50-A-MD-R Digital Pressure Sensor - Equivalent & Substitute Parts

Part Overview

The MG-50-A-MD-R is a digital pressure gauge sensor manufactured by Amphenol SSI Technologies, designed for industrial automation applications requiring pressure measurement up to 50 PSI with LCD display output. This sensor features a Wheatstone Bridge output with 4-20 mA signal transmission and temperature compensation for stable operation across -10°C to 60°C.

The MG-50-A-MD-R is classified as Obsolete in current product status. Identifying equivalent substitute parts is necessary to maintain system functionality, ensure supply chain continuity, and support ongoing maintenance and replacement requirements for existing installations.

Key Parameters

Parameter	Specification
Manufacturer Part Number	MG-50-A-MD-R
Manufacturer	Amphenol SSI Technologies
Series	MG-MD
Operating Pressure Range	50 PSI (344.74 kPa)
Maximum Pressure	150 PSI (1034.21 kPa)
Pressure Type	Vented Gauge
Output Type	Wheatstone Bridge
Output Signal	4 mA ~ 20 mA with LCD Display
Accuracy	±0.5%
Supply Voltage	12V
Port Size	Male - 1/4" (6.35 mm) NPT
Port Style	Threaded
Operating Temperature Range	-10°C ~ 60°C
Features	Temperature Compensated
Package Type	Module Box with Display
RoHS Status	RoHS Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the MG-50-A-MD-R are identified based on strict equivalence of the following critical parameters:

Operating Pressure Rating: 50 PSI nominal operating pressure
Output Type & Signal: Wheatstone Bridge with 4-20 mA output and LCD display capability
Accuracy Class: ±0.5% measurement accuracy
Supply Voltage: 12V operation
Port Configuration: Male 1/4" NPT threaded connection
Temperature Compensation: Active temperature compensation feature
Pressure Type: Vented gauge configuration
Compliance: RoHS Compliant certification

The substitute part MG-50-A-M12-R maintains all critical electrical and mechanical parameters required for functional equivalence in industrial automation pressure measurement applications. The primary difference is the connector interface and packaging configuration, which does not affect the core pressure sensing and signal output functionality.

Parameter Comparison

Parameter	MG-50-A-MD-R (Main Part)	MG-50-A-M12-R (Substitute)
Manufacturer	Amphenol SSI Technologies	Amphenol SSI Technologies
Operating Pressure	50 PSI (344.74 kPa)	50 PSI (344.74 kPa)
Maximum Pressure	150 PSI (1034.21 kPa)	150 PSI (1034.21 kPa)
Pressure Type	Vented Gauge	Vented Gauge
Output Type	Wheatstone Bridge	Wheatstone Bridge
Output Signal	4 mA ~ 20 mA, LCD Display	4 mA ~ 20 mA, LCD Display
Accuracy	±0.5%	±0.5%
Supply Voltage	12V	12V
Operating Temperature	-10°C ~ 60°C	-10°C ~ 60°C
Temperature Compensation	Yes	Yes
Product Status	Obsolete	Active
Packaging	Module Box with Display	Bulk
RoHS Compliance	RoHS Compliant	RoHS Compliant

Engineering Selection Recommendations

Primary Substitute: MG-50-A-M12-R

The MG-50-A-M12-R is the manufacturer-recommended substitute for the obsolete MG-50-A-MD-R. This part maintains complete electrical and mechanical equivalence across all critical pressure sensing parameters, including operating pressure range, output signal characteristics, accuracy specification, and temperature compensation functionality.

The MG-50-A-M12-R carries Active product status, ensuring ongoing availability and manufacturer support. Both parts maintain RoHS Compliance certification, satisfying regulatory requirements for industrial automation applications.

The transition from the MG-50-A-MD-R to MG-50-A-M12-R does not require system redesign or recalibration, as the functional pressure measurement characteristics remain identical. The packaging difference (Module Box with Display versus Bulk) reflects current manufacturing and distribution practices and does not impact sensor performance or integration into existing pressure measurement systems.

Frequently Asked Questions (FAQ)

Q: Can the MG-50-A-M12-R directly replace the MG-50-A-MD-R in existing installations?

A: Yes. Both parts share identical operating pressure ratings (50 PSI), output signal specifications (4-20 mA with Wheatstone Bridge), accuracy (±0.5%), supply voltage (12V), and temperature compensation features. The electrical and mechanical interfaces are equivalent for pressure measurement applications.

Q: What is the difference between the MG-50-A-MD-R and MG-50-A-M12-R?

A: The primary differences are product status and packaging configuration. The MG-50-A-MD-R is Obsolete, while the MG-50-A-M12-R is Active. The MG-50-A-MD-R uses Module Box with Display packaging, while the MG-50-A-M12-R is supplied in Bulk packaging. All pressure sensing and signal output parameters are identical.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist for the specified parameters. Both parts operate at 12V supply voltage, produce 4-20 mA output signals, and connect via identical pressure port configurations. System integration remains unchanged.

Q: Why is the MG-50-A-MD-R classified as Obsolete?

A: Obsolete status indicates the part is no longer in active production. The MG-50-A-M12-R represents the current active equivalent, ensuring continued availability and manufacturer support for this pressure sensor specification.

Q: Is RoHS compliance maintained with the substitute part?

A: Yes. Both the MG-50-A-MD-R and MG-50-A-M12-R are RoHS Compliant, maintaining regulatory compliance for industrial automation applications.

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