Quote scope before a blended number
A multifunction insulation tester price is hard to compare when one factory includes a 10 minute timer and another prices only a spot megohm reading. LinkScope Sourcing 58, an independent sourcing partner, asks each respondent to name the manufacturer, the model, and the functions inside the figure. A shared nickname on a housing is not measurement accuracy.
Write each voltage you need priced, for example 100 V, 250 V, 500 V, and 1000 V. If the procedure also calls for 50 V on sensitive control wiring, say so. Ask the factory to state the test-source short-circuit current, commonly discussed around 1 mA in IEC 61557-2, or the 2 mA value if that is what the sheet prints. A guard terminal, when present, should be listed as included or optional.
Resistance windows differ. One digital display may run from 0.01 megohm to 200 gigohm. Another may claim a 10 teraohm upper limit under a stated condition. Do not average those limits. Request measurement accuracy at one named point, such as plus or minus 2 percent of reading plus 2 digits at 500 V, and a second point if your acceptance sheet uses 1000 V. A 6000 count screen describes resolution, not that accuracy statement.
Each row is a document or sentence to request. None of these rows is a credential of this desk. Supplier ISO 9001, an NRTL mark, or FCC equipment authorization applies when the proposed item file shows it.
| Line | Ask the factory to state | Buyer check |
|---|---|---|
| Identity | Manufacturer, model, and datasheet revision date | Reject a family photo with no model |
| Voltage | Selectable test voltages and short-circuit current | 50 V and 1000 V are different procedures |
| Timing | 30 s, 60 s, and 10 min modes, plus PI and DAR formulas | PI is 10 min divided by 1 min |
| Accuracy | Measurement accuracy with range, percent, and digits | Do not blend unlike voltages |
| Safety | IEC 61010-1 category, such as CAT III 600 V | Match the installation, not the box art |
| Leads | Probe rating, fuse, and connector mating cycle notes | Price the pouch separately if optional |
| Environment | Ingress protection and operating temperature | IP40 and IP54 change the case quote |
| Calibration | Calibration traceability, interval, and serial link | 12 month papers are a choice |
Background: a regional carrier maintenance group in Ohio wanted 40 handhelds and had typed multifunction insulation tester price without listing timers. Process: the brief required 500 V and 1000 V, a 60 second hold, polarization index as the 10 minute over 1 minute ratio, CAT III 600 V, and leads included, with logging called out as optional. Result: one offer omitted the 10 minute timer and excluded leads, so it stayed on a deviation page until the buyer decided whether the procedure allowed that substitute.
Background: a colocation owner wanted stored readings for rectifier feeders, not only a display. Process: the RFQ separated the instrument, the interface cable, and any logging license, and asked whether the stated measurement accuracy changes when logging is active. Result: the comparison showed a meter figure and a software figure instead of one blended number that hid a missing license.
No. Require the responding factory to name the maker and the model it will ship. A compatible housing can share a search phrase and still differ in test voltage, fuse layout, or safety category.
It cannot. Return loss, VSWR, wavelength, optical budget, and receiver sensitivity belong to other instruments. Impedance on a multimeter voltage range is also a different line. Keep those off the insulation price so the commercial scope stays about resistance under a DC test voltage.
Mark the lead requirement as mandatory or as an acceptable deviation. Connector mating cycle life and insulation rating are part of that line. Frequency range, if the multifunction unit also measures AC volts, needs its own row, such as 45 Hz to 65 Hz or a wider band the sheet actually prints.
You may prefer a high-end instrument with a tighter accuracy statement and a longer calibration file, a mid-range unit, a budget unit, or an undecided comparison. That preference is not a rating this desk has verified, and it does not require a quotation you already hold.
A new unit can make the calibration date and the lead condition easier to describe. A refurbished unit can cover a discontinued procedure when the seller states remaining support months, fuse condition, and whether leads are original. Until those lines match, the two prices are not the same delivered scope. Original leads may follow a maker support note, while a compatible set may widen supply when voltage rating and connector fit are written down. A photograph of a red lead does not settle either side.
Costs that sit outside the unit price need their own confirmation: freight to the US destination, duties, calibration papers, spare fuses, the case, and any commissioning visit. Compare those lines before you compare the headline. Then send the locked list through the requirement desk or start from the inquiry names.
There is no upload control here. Paste model string, functions, quantity, destination, and exclusions into the procurement field. Earlier quotes can be sent after a reply to the work email on the form.
Qualified briefs can include sourcing support of up to 3%.
Eligibility applies to qualified business buyers and is confirmed after we review your product, quantity, destination, and sourcing requirements.
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