A level sensor price comparison can reverse once freight, accessories and site work are made explicit. Before choosing the lowest total, confirm that the offers describe the same approved configuration and delivery scope. A blank commercial line is an unanswered question, not proof that the item is free or included.
Use one comparison sheet for the offers
| Line | What to record |
|---|---|
| Hardware | Exact model version, connection, seal, output and quantity. |
| Accessories | Each required cable item, bracket or interface and whether it is included. |
| Delivery | Named delivery location, freight scope, packing and stated exclusions. |
| Services | Configuration, documentation, site attendance and acceptance responsibilities. |
| Validity | Currency, offer date, validity period and separately stated charges. |
Where currencies differ, state the conversion date and rate used for the internal comparison. Treat taxes and import-related charges according to the actual transaction and responsible advisers; do not infer them from a supplier's location. Keep quoted amounts distinct from buyer estimates so the final decision can be audited.
Level sensor price comparison requires a technically accepted base
For an MV-RD12 enquiry, a threaded version and a flanged version are not identical items. Neither are a two-wire 4-20 mA/HART arrangement and separately powered RS485 electronics. Identify which construction meets the tank and receiver before normalising the price.

If one offer omits an essential seal or cannot document the needed assembly rating, mark it technically unresolved. Do not add a guessed allowance and rank it as equivalent. Ask for the missing configuration or a revised quotation before treating the offers as directly comparable.
Show the consequence of each exclusion
An excluded bracket may require only a known site-supplied part. An excluded commissioning visit may leave a test without an owner. Record who supplies the missing item, the evidence for its estimated cost and any dependency on access or shutdown. This makes the comparison useful to the project team rather than merely producing a lower spreadsheet total.
Quantity also needs a common basis. A unit price for a single replacement should not be compared with an assumed volume discount that has not been offered. If several identical units and a spare are required, ask for that quantity and identify whether their documented configurations truly match.
Questions when offers differ
Q1. Should the cheapest incomplete offer remain in the ranking?
Keep it visible as incomplete, with the unresolved items named. Do not rank it as an accepted delivered solution until those items are resolved.
Q2. Can a general price range be used as the project budget?
Use a range only when its configuration, date and included work match the project. Request a current itemised quotation for the selected assembly, quantity and delivery location. Keep buyer allowances for unresolved work separate from the supplier's confirmed price so the remaining budget uncertainty is visible.
Summary
Make scope and uncertainty visible before comparing totals. Request an itemised MV-RD12 offer using the approved configuration, quantity and delivery location.
