Fluke 381 Remote Display True-RMS AC/DC Clamp Meter iFlex

381 remote-display clamp meter with iFlex explained

The Fluke 381 Remote Display Clamp Meter with iFlex (381) is a true-RMS AC/DC clamp meter whose display detaches and works wirelessly up to 10 m. An 18-inch iFlex flexible probe is included, extending AC current to 2500 A. Seven Star LLC supplies 381 in Oman and the GCC as an independent supplier in Muscat, not affiliated with the manufacturer.

The 381 lets one person do work that would otherwise need two. The table decodes the identifiers.

381 technical specifications

Data are from the manufacturer product page and 381 datasheet.

How the Fluke 381 Remote Display Clamp Meter with iFlex works

The display module slides off the meter body and communicates wirelessly, so a technician can clamp the jaw or wrap the iFlex around a conductor, then walk to controls or remove protective equipment while still seeing real-time readings.

A radio transmitter automatically sets the correct range, and an integrated low-pass filter plus signal processing keeps readings stable in noisy electrical environments. Inrush measurement captures motor starting current as the protection device sees it.

Key features

• Detachable remote display
• iFlex probe included
• Low-pass filter
• Proprietary inrush measurement
• Three-year warranty

Where 381 fits and related Fluke models

The 381 is the answer when you must watch a reading from a distance without a smartphone. The 374 FC and 375 FC send data to a phone instead. The 355 is better for very large DC currents.

Use iFlex to reach large or awkward conductors.

Selection checklist for 381

Confirm the following points before ordering, so that the instrument matches the work and the safety rules of your site.

• Need for stand-alone remote display.
• iFlex included.
• Jaw 34 mm.
• 10 m wireless range.

Safe use, care and maintenance of 381

• Close the jaw fully and check that the faces are clean. Dirt or rust on the jaw faces causes reading errors, and a jaw that does not close completely should be taken out of service.
• Clamp only one conductor at a time. Two conductors of a single-phase pair or a three-phase set cancel each other and the 381 will show a value close to zero.
• Verify the clamp on a known live circuit before and after any test that decides whether equipment is safe to touch.
• Replace batteries when the low-battery indicator appears and remove them for long storage. Inspect the test leads for damage before each use of the voltage and resistance functions.
• Keep the jaw and display free of dust. In dusty Gulf sites, use the supplied case and wipe the instrument after switchgear room work.
• Respect the maximum conductor size and never clamp bare busbars unless the rating and your site procedure allow it. Treat the clamp as a measuring tool, not a switch or an isolator.
• Allow the instrument to reach ambient temperature after moving it from an air-conditioned vehicle into a hot plant area, so that condensation does not form inside the housing and the display settles.
• Schedule periodic calibration through your quality system, and keep the certificate with the instrument record so that readings used for reports remain traceable.

Typical applications of 381 in Oman and the GCC

Clamp meters are used for load checks on motors, feeders, chillers and pump drives. In Oman, maintenance teams at oil and gas plants, power and water utilities, desalination units and petrochemical sites use them for current surveys without opening circuits. A clamp reading showing a motor drawing more than its nameplate current points to a mechanical overload, a supply imbalance or a failing winding, while a reading near zero on a running pump suggests a lost phase or dry running. Because the circuit stays intact, these checks can be done on live equipment under a permit, which keeps downtime low during the hot summer months when cooling and pumping loads peak.

In Oman the 381 helps engineers on motor start tests, generator output checks and feeder surveys where reading the meter next to the conductor is awkward or unsafe.

381 compared with nearby models

The 381 is a different wireless concept from the FC models.

Information to send with an RFQ for 381

To prepare an accurate quotation, please send:

• Exact model 381 and the quantity required.
• Maximum conductor size and expected current, so the jaw or flexible probe option can be confirmed.
• Whether wireless or smartphone use is needed on site.
• Any extra accessories such as a hanging strap, leads or a case.
• Calibration traceability paperwork if required on delivery.
• Delivery point in Oman or elsewhere in the GCC and the required date.

Storage, handling and spares for the Fluke 381

Store the Fluke 381 in its case or holster with the test leads disconnected. Remove the batteries if the meter will not be used for several weeks, because leaking cells can damage the battery contacts. In Oman and the GCC, do not leave the instrument in a parked vehicle during summer, where cabin temperature can go well above the storage limit in the user manual.

• Inspect test leads, probes and clamps before each use and replace any lead with damaged insulation or exposed metal.
• Use only leads and accessories rated for the same or a higher measurement category than the work you do.
• Keep spare fuses of the exact type given in the manual; a wrong fuse removes the protection the meter is built with.
• Plan a regular calibration interval, often twelve months, and keep the certificate with the instrument records.

If your team uses several units of the Fluke 381, it is useful to order spare test leads and batteries in the same RFQ, so that a meter is not taken out of service for a simple accessory.

Documents and quotation

A manufacturer datasheet for the Fluke 381 Remote Display Clamp Meter with iFlex is attached on this page so that you can check the full specification before ordering. Please review it against your site requirements.

For a quotation, send the part number 381, the quantity and your delivery location in Oman or the GCC through the RFQ button on this page. Availability and lead time are confirmed per request.