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A pulse radar requirement must be checked against the offered instrument's documented measurement principle. "26 GHz", "non-contact" and a horn-antenna photograph do not establish pulse operation. If a tender explicitly requires that principle, the supplier needs to confirm it for the exact proposed version before the buyer approves the offer.
What pulse radar means in a technical specification
Pulse radar determines distance from the timing of transmitted and returned electromagnetic pulses. FMCW radar uses a frequency-modulated signal and processes the frequency relationship between transmission and return. Both can provide non-contact level measurement, but neither label alone determines suitability for a particular tank. The radar measurement-principle guide explains the distance calculation separately.
Write the measurement principle separately from carrier frequency, antenna, usable distance and process ratings. Otherwise, an offer can appear to match because one conspicuous number agrees while a mandatory technical requirement remains unanswered.
| Claim | Evidence | Decision |
|---|---|---|
| Pulse | Model-specific statement of measurement principle | Accept the principle only when the offered version is identified |
| Frequency | Operating-frequency specification | Assess separately; do not use it to infer waveform |
| Range | Applicable measuring interval and application conditions | Check actual tank distances, not only the advertised maximum |
| Alternative | Written technical deviation and supporting performance data | Obtain purchaser approval before substituting another principle |
What the MV-RD902 documentation establishes
The MV-RD902 page identifies a 26 GHz horn-antenna liquid radar and a 0.3-30 m measuring interval. The corresponding model technical manual describes transmitted microwave pulses and the returned signal. That is evidence for pulse operation; the frequency number alone is not. Obtain the applicable manual revision with the offered unit.
Where pulse operation is mandatory, retain that model-specific confirmation in the purchase record. If the purchaser's actual need is reliable level measurement rather than a prescribed principle, ask whether a performance-based alternative may be evaluated. That change belongs in the approved specification, not in an unrecorded assumption by the buyer or supplier.
Make a compliant offer useful to the installer
After the principle is resolved, review the offered antenna clearance, process seal and connection against the tank drawing. Establish the required output and receiving equipment. A correctly identified waveform does not excuse an incompatible flange or an output that the PLC cannot read.
Include the agreed verification method in the purchase record. It should test the actual level duty and signal path under relevant operating conditions, rather than treating a technology label as an acceptance result.
Questions before purchase approval
Q1. Is FMCW automatically an unacceptable substitute?
It is an unapproved deviation when pulse operation is mandatory. It may be a valid alternative if the responsible purchaser explicitly accepts it after technical review; do not make that decision silently.
Q2. Can antenna shape identify the principle?
No. A horn is part of the radio-frequency assembly, not sufficient evidence of the distance-processing method. Use model-specific documentation.
Summary
Keep the measurement principle explicit and distinguish confirmed facts from unanswered requirements. Ask METRAVON to clarify the proposed radar implementation before approving a pulse-specific order, including any permitted technical alternatives in the request.
