Rosemount™ 2051TG1A2B21AB4M5 2051 Pressure Transmitter

2051TG1A2B21AB4M5

"2051" is the serial number, 

"T" indicates that the transmitter type is a pressure transmitter, 

and "G" indicates gauge pressure measurement. 

The following numbers and letters represent different technical parameters and configuration options, and their specific meanings are as follows:

Measurement range: "1", "2", "3", "4", and "5" correspond to different measurement ranges. 

Generally speaking, the larger the number, the wider the measurement range. For example, "1" may correspond to a smaller measurement range, such as 2.5inH₂O to 50inH₂O; 

"5" may correspond to a larger measurement range, such as 200psi to 2000psi, but the specific range needs to be referred to the product manual.

Process connection: "A" usually indicates a standard process connection method, such as 1/2 - 14 NPT internal thread.

Electrical interface: "2" represents a specific electrical interface type, which may be an M20×1.5 threaded interface.

Output signal: "B2" indicates that the output signal is 4 - 20mA HART protocol.

Other options: "1" may indicate a specific option, such as a specific damping setting or linearization function; 

"AB4" may involve some combination of options related to accuracy, certifications, or other features; 

"M5" indicates the housing is made of aluminum with a polyurethane coating.

Hazardous Location Certifications: 

"K5" indicates Manufacturer Mutual (FM) Flameproof and Intrinsically Safe certification; 

"E5" indicates Manufacturer Mutual (FM) Flameproof certification; 

"I5" indicates Manufacturer Mutual (FM) Non-incendive and Intrinsically Safe combined certification.