CP-1-500K Replacement Guide: Revere 392B, Cardinal CP1, Totalcomp TCP1 & More

pete8781
Jul 30
3 min read

Need to identify an old pancake load cell before ordering? Call MNM Scales at (832) 290-3120 or email mnmscales@yahoo.com with photos, model tags, dimensions and indicator information.

The CP-1-500K replacement search often begins with an old load-cell nameplate rather than a current catalog number. MNM lists its 500,000 lb CP-1-500K / LPD-500K pancake compression sensor as interchangeable with several legacy families, including Revere 392B and Revere CP, Cardinal CP1, Totalcomp TCP1, Artech 90210, multiple Streeter Amet numbers and a Howe Richardson 20908XXX family. That makes the MNM listing a useful starting point, but a reliable replacement still requires mechanical and electrical matching before the old cell is removed.

Interchange Families Listed by MNM

What “Interchangeable” Should Mean in a Real Replacement Job

A cross-reference is valuable because it narrows the search, but it does not eliminate due diligence. Legacy installations may have custom loading buttons, altered cable lengths, special connectors, different indicator excitation or field-machined plates. Before ordering, confirm the rated capacity, overall height/diameter, loading surface geometry, bolt or locating features, cable exit and length, rated output, bridge resistance, excitation requirement and environmental sealing of the exact old unit. Then compare those details with the replacement documentation or MNM’s confirmed specifications.

Document the Existing System Before Removing Anything

Photograph the nameplate and all stamped markings. Measure the sensor diameter, height and contact surfaces. Record how it is centered in the fixture. Photograph the cable exit and connector. Record the indicator model and configured capacity/division. Identify the cable wire colors at the terminal block. Save calibration records and the last known zero/span results. Measure fixture clearance so the replacement will not be side-loaded or preloaded after installation. If the system uses multiple cells, record how the old sensor is combined or trimmed with the others.

Wiring: Do Not Trust Color Alone Across Brands

For the MNM CP-1-500K listing, red is positive excitation/input, black is negative excitation/input, green is positive signal/output and white is negative signal/output. An older Revere, Cardinal, Totalcomp, Artech or Streeter Amet cell may use a different color convention. Label the terminal functions before disconnecting the old sensor. Match function to function—not simply red to red—unless the old documentation confirms the same convention.

Indicator Compatibility Checklist

Confirm the indicator can supply the sensor’s required excitation voltage. Confirm the bridge resistance is within the indicator’s load capability. Confirm the rated millivolt-per-volt output can be calibrated over the desired 500,000 lb range. Confirm the indicator has enough displayed counts for the resolution you need. Preserve decimal, unit, filter, motion, hold and communication settings. If the old system uses six-wire sensing while the replacement is four-wire, follow the indicator manufacturer’s jumper/sense-terminal instructions rather than guessing.

Mechanical Fit Is Just as Important

Pancake cells are sensitive to how force enters the sensor. A replacement that is a few millimeters taller can change platen alignment or create a permanent preload. A different loading radius can alter contact stress. A cable exit in the wrong location may be crushed by a moving platen. Verify the complete stack-up before returning the machine to service, then preload at low force and inspect for any tendency to rock, tilt or bind.

Recalibration Is Required After Replacement

Even when a new cell is nominally interchangeable, its exact zero output and sensitivity will not be identical to the old sensor. Perform a no-load zero and span calibration with an appropriate high-force reference, then verify multiple points across the working range. If the system is part of regulated testing or a certified measurement program, follow the required traceability, sealing and service-document rules. Do not copy an old calibration factor blindly and assume the replacement is accurate.

FAQ

Does MNM list Revere 392B as interchangeable? Yes, the CP-1-500K product page lists Revere 392B and Revere CP among its interchange families. Does it list Cardinal CP1 and Totalcomp TCP1? Yes. Can I order from the cross-reference alone? The cross-reference is a strong starting point, but exact physical/electrical matching should be confirmed for the installed legacy unit. Will the old calibration still work? No assumption should be made; recalibrate the replacement sensor in the installed system. What if wire colors differ? Match excitation and signal functions using documentation or verified terminal identification rather than brand-to-brand color assumptions. Why measure the old cell before removal? Very-high-force fixtures can have little clearance, and geometry affects alignment and preload. What information should I send MNM? Old model/serial photos, capacity, dimensions, loading surfaces, cable/connector, indicator model and any old datasheet or calibration certificate.

Product page: https://mnmscales.com/product/compression-load-lpd-500k-500000-lb-pancake-style-load-cell-cp-1-500k/