Rosemount 3051 Decoder
Paste a 3051SAL, 3051CD, 3051CG, or 3051CA model code and see every position resolved against the current Emerson Product Data Sheet, with source-cited meanings, compatibility checks, and field caveats.
A grammar-driven decoder for the Rosemount 3051 family of pressure transmitters. The 3051SAL Scalable Level Transmitter (PDS 00813-0100-4801 Rev UW April 2026) and the 3051C Coplanar pressure transmitter family covering 3051CD differential, 3051CG gage, and 3051CA absolute (PDS 00813-0100-4001 Rev WG October 2025) are supported. Type or paste a model code and the tool walks each ordering position in order, resolves it against the cited PDS page, and surfaces compatibility footnotes and field caveats that maintenance planners actually need on the job. For 3051SAL, the seal style branch at position 12 expands into the FF, EF, RF, PF, FC, RC, RT, SC, or SS sub-tables so the rest of the code reads cleanly. Additional options after the required positions parse via longest match against the Approvals, Display, Mounting, Calibration, Certification, and Diagnostics tables. Every code that the decoder cannot find in the source PDS is flagged as unknown rather than guessed. Source pages are cited on every position so the user can verify the result themselves.
Read the Rosemount 3051 Decoder Guide for family overview and worked examples
Rosemount 3051 Decoder Guide →Decode the motor that drives the pump or fan being measured
Motor Nameplate Decoder →Size the HART, Fieldbus, or Profibus loop cable from marshalling to the transmitter
Wire Sizing Calculator →Verify the loop voltage at the transmitter after voltage drop on a long pull
Voltage Drop Calculator →How It Works
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Pick or Paste a Model Code
Type the full ordering string in the input field, or click one of the example chips to load a worked-out string. Spaces, slashes, hyphens, and commas are all treated as separators, so the tool reads "3051SAL1CD2AA1A2020DFF71CA00/K5/B4/Q4" the same as "3051SAL 1 C D 2A A 1A 2 0 2 0 0 D FF 7 1 CA 0 0 / K5 / B4 / Q4". The tool is case-insensitive on input but every output is shown in uppercase to match the PDS.
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Read the Family Banner
The first card after decoding shows which family the prefix matched (3051SAL or 3051C) and which Emerson Product Data Sheet revision was used as the source. If the family was not recognized, the tool says so and links to the supported prefixes rather than guessing. For 3051C, all three measurement types (D differential, G gage, A absolute) share the same ordering matrix and the first position selects the variant.
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Walk the Required Positions
Each row shows the position number, the raw code from the input, the position name, the plain-English meaning, the confidence label, and the source page. Stars (★) mark Emerson standard offerings that ship faster. Context-dependent positions (Pressure range on 3051SAL depends on Pressure module type, Pressure range on 3051C depends on Measurement type, position 8 and 9 on 3051SAL depend on Seal system type) show which context was applied so the user can see how the meaning was resolved.
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Walk the Seal Style Branch (3051SAL only)
After the eleven required positions, 3051SAL branches into a seal style: FF flush flanged, EF extended flanged, RF remote flanged, PF pancake, FC flush flanged with RTJ gasket, RC remote flanged with RTJ, RT remote threaded, SC hygienic Tri-Clamp, or SS hygienic tank spud. The tool shows the seal name, the branch description, and each sub-position with its own source page. EF six-inch extensions only ship with SST materials, FC only ships with high-pressure ASME flanges, and SC and SS are limited to hygienic process connections.
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Read the Additional Options
Options after the required positions parse by longest match. Q4 cal cert, QT IEC 61508 SIL certification, K5 FM XP/DIP/IS approval, B4 SST mounting bracket, M5 Plantweb LCD, T1 transient terminal block, WR3 / WR5 extended warranty, and so on. Options are grouped by category in the output so it is easy to spot which Approvals, Brackets, or Calibration certs are on the order.
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Check Compatibility Warnings
The decoder runs a set of rules drawn directly from the PDS footnotes: wireless output (X) requires intrinsically safe approvals, FOUNDATION Fieldbus (F) requires Plantweb housing, FM/CSA combination approvals are not available with M20 or G1/2 conduit entry, EF 6-inch extension only with SST, drain/vent valve FV is required for Seal system type C or D with DP module D, and so on. Each rule cites the PDS page so the user can confirm against the source.
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Read Field Notes and Cross-References
The field notes section captures domain knowledge that the matrix does not state explicitly: tantalum diaphragm temperature limits in chloride service, hygienic clamp MWP being limited by the customer-supplied clamp rating, wireless and IS planning, fill fluid behaviour in vacuum. Cross-references jump straight to related ToolGrit tools (motor nameplate decoder, wire sizing, voltage drop, panel load) and back to the authority guide.
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Export the Decoded Report
Use the PDF export for a branded, page-break-safe report that drops every decoded position, every fired warning, and every cross-reference onto pages a maintenance planner can hand to a supervisor. Use the CSV export for spreadsheet import. Share the URL to send the exact same decode to a coworker without re-typing the code.
Built For
- Maintenance planner walking up to an installed 3051SAL on a tank skid and trying to figure out which diaphragm material and fill fluid are in the unit
- Reliability engineer auditing a recently-delivered 3051CD to confirm the wireless output, IS approval, and engineered polymer housing combination match the spec
- Instrument tech replacing a 3051CG and needing to confirm that the alternate flange code on the replacement matches the legacy install
- Inspector evaluating whether the FM K5 or ATEX K1 approvals on a 3051SAL tag match the Class I Division 1 area classification of the installation
- Project engineer reviewing a 1199 seal pair on a 3051CD remote-mount level loop and checking that the capillary fill fluid matches the transmitter fill
- Foreman placing a phone order for a spare 3051SAL and reading off the existing tag to the Emerson rep without missing a position
- Plant operator decoding a 3051CD tag from a 20-year-old installation to figure out what the obsolete material codes correspond to in the current revision
- Trainer onboarding a junior planner and walking them through what each position of a real 3051 model code actually controls
Features & Capabilities
Two Families, Three Variants
Supports 3051SAL Scalable Level Transmitter from PDS 00813-0100-4801 Rev UW April 2026 (eleven required positions plus a branching seal style at position 12), and 3051C Coplanar pressure transmitter from PDS 00813-0100-4001 Rev WG October 2025 (eight required positions plus appended additional options). 3051CD differential, 3051CG gage, and 3051CA absolute all share the 3051C matrix and select the variant at position 1.
Grammar-Driven, Not a Flat Lookup
A real 3051 model code mixes required model components, context-dependent meanings, seal subassemblies, and appended options. The decoder is built around a grammar that separates these layers. Required positions consume fixed-width codes left-to-right. Seal style at SAL position 12 forks the parser into a branch of seal-specific positions. After the required positions and seal branch, the remaining string parses against an option-code dictionary using longest match. This is why a tag with options in different order, with or without slashes, still decodes cleanly.
Source-Cited On Every Position
Every meaning shown carries the PDS page where it came from. Every fired compatibility check carries the PDS page where the footnote lives. The source PDS document number, revision, and date are pinned on the source citation card at the bottom of every decode. The dataset never claims something the PDS does not say.
Honest About Unknown Codes
When a code is not in the source PDS for the matched family, the decoder reports it as "Unknown - code not listed" rather than guessing. The decoder errs on the side of admitting it does not know.
Context-Dependent Positions Resolved Automatically
Pressure range URL on 3051SAL changes by Pressure module type (Coplanar DP, Coplanar Gauge, In-line Gauge). Pressure range on 3051C changes by Measurement type (Differential, Gage, Absolute). High side connection and Low side connection on 3051SAL change by Seal system type (direct mount, remote mount with capillary, Tuned-System, Balanced). The decoder reads the trigger position first, then resolves the dependent meaning, and shows "Context applied: Pressure module type = D" inline so the user sees how the resolution was made.
Compatibility Checks Built In
A live exclusion-rules engine flags wireless (Output X) without an intrinsically safe approval code (rule X1), FOUNDATION Fieldbus (Output F) without Plantweb housing (rule X2), tantalum diaphragms (CC, DC) with thin-diaphragm option SC (rule X3), EF six-inch extension on non-SST materials (rule X4), FM and CSA combo approvals on M20 or G1/2 conduit entry (rule X6), QT safety cert on FF or X output (rule X7), missing drain/vent valve FV on Seal system C or D with DP module (rule X9), UltraTherm 805 fill fluid without a thermal range expander (rule X10), and several more. Each rule cites the PDS page so the user can verify.
Plain-English Summary
Every successful decode produces a one-line plain-English summary suitable for a spec sheet, an email, or a purchase requisition. The summary reads like the spec sheet sentence a maintenance planner would write by hand: family, performance class, module type, range, output, housing, seal system, seal style with size and class, fill fluid, and the most important options listed in PDS order.
Field Notes That the PDS Does Not Print
Each family carries a list of caveats drawn from field experience and from PDS context that does not survive a quick reading: tantalum diaphragm temperature failure modes in chloride service, hygienic clamp MWP being limited by the customer-supplied clamp, wireless approval planning, derating above 185 °F ambient on direct-mount seals, the cold-temperature option matrix on 3051CD, and the trade-off between direct mount and remote mount with capillary. These are written like a senior planner walking a junior planner through the trade-offs.
Cross-References to the Rest of ToolGrit
Each decode includes a cross-reference panel pointing at the motor nameplate decoder for the motor driving the pump or fan that the transmitter is measuring, the wire sizing calculator for the HART or Fieldbus loop cable, the voltage drop calculator for verifying loop voltage at the device, the system chain analyzer for placing the transmitter inside the larger rotating-machine context, the panel load study for confirming panel capacity, and the matching authority guide for written context.
PDF and CSV Export
PDF export uses the shared ToolGrit programmatic PDF generator. The decoded report fits on a couple of pages with no row mid-split, no orphan headings, and a branded header and disclaimer footer. CSV export packages the same fields for spreadsheet import and SAP paste. Share-URL encoding lets a coworker open the exact same decode in their browser without retyping the code.
Light and Dark Mode, Mobile-Friendly
Standard ToolGrit light and dark theme with WCAG AA contrast throughout. The decoded output collapses cleanly to mobile at 375 px viewport without horizontal scrolling. The Plain-English summary is a screen-reader-friendly aria-live region so accessibility tools announce the decoded result when the input changes.
Comparison
| Family | PDS document | Revision and date | Variants covered | Required positions | Seal style branch |
|---|---|---|---|---|---|
| 3051SAL | 00813-0100-4801 | Rev UW, April 2026 | 3051SAL Scalable Level Transmitter | 11 (Performance class, Configuration type, Pressure module, Pressure range, Transmitter output, Housing style, Seal system type, High side connection, Low side connection or capillary ID, Capillary length, Seal fill fluid) | Yes - FF, EF, RF, PF, FC, RC, RT, SC, SS at position 12 |
| 3051C | 00813-0100-4001 | Rev WG, October 2025 | 3051CD Differential, 3051CG Gage, 3051CA Absolute | 8 (Measurement type, Pressure range, Transmitter output, Materials of construction, Isolating diaphragm, O-ring, Sensor fill fluid, Housing material) | No - uses Rosemount 1199 / 1299 as a separate model string |
References
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Frequently Asked Questions
Learn More
Rosemount 3051 Decoder Guide: Read SAL and CD Model Codes Without Guessing
How to read a Rosemount 3051SAL, 3051CD, 3051CG, or 3051CA model code one position at a time. Covers context-dependent positions, the seal-style branch, compatibility rules, and a worked example. Companion to the Rosemount 3051 Decoder.
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