Fluke 27 II Rugged IP67 Digital Multimeter

27 II rugged IP67 digital multimeter explained

The Fluke 27 II Rugged Digital Multimeter (27 II) is a rugged handheld multimeter from the Fluke 20 series, rated IP 67 against water and dust and drop-tested from 3 m. It is built for harsh conditions where a standard meter would fail. Seven Star LLC supplies 27 II in Oman and the GCC as an independent supplier in Muscat, not affiliated with the manufacturer.

The 27 II is the baseline of the rugged pair, with the 28 II above it. The table decodes the identifiers.

27 II technical specifications

Data are from the manufacturer product page for the 20 Series rugged multimeters.

How the Fluke 27 II Rugged Digital Multimeter works

The 27 II is a sealed instrument. Gaskets keep dust and water out, the rubber holster absorbs impact, and the switch and jacks are designed to remain usable after rough handling. The display has a bar graph and backlight, and Min/Max/Avg and reading hold are included.

Measurement is average-style with relative reading (zero) available, which lets the technician null out test lead resistance on low-ohms readings. Three AA cells give about 800 hours of use, which suits remote inspection rounds.

Key features

• IP 67 waterproof and dustproof
• MSHA approvals
• 3 m drop-tested
• Extended operating temperature to -15 °C (-40 °C for 20 minutes)
• Rubber holster

Where 27 II fits and related Fluke models

The 27 II is the lower sibling of the 28 II. The 28 II adds true-RMS, a thermometer, 20,000-count high-resolution mode and a low-pass filter for variable speed drive circuits. Choose the 27 II when ruggedness is the main need and the signals are conventional.

For office and workshop use where ruggedness is not needed, the 170 series gives similar electrical ranges for less.

Selection checklist for 27 II

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

• Environmental exposure: choose it where water, dust or drops are routine.
• No temperature or true-RMS function.
• Rated CAT IV 600 V / CAT III 1000 V.
• Check the lead and clip set required.

Safe use, care and maintenance of 27 II

• Before each shift, inspect the case, the holster and the test leads. Cracked insulation, exposed metal or a loose input jack means the leads should be replaced before the 27 II touches any live circuit.
• Confirm the meter on a known live source before and after a measurement that decides whether a circuit is dead. Never rely on a single reading when the result will be used to release a lock-out.
• Keep the input fuses to the specified type only. A blown fuse in the current inputs is the most common service event on a multimeter used on motor circuits, and a wrong fuse defeats the safety design of the Fluke 27 II Rugged Digital Multimeter.
• Replace the battery when the low-battery symbol appears, because readings near the lower end of the range become unreliable on a weak cell. Remove the battery before long storage.
• Store the instrument clean and dry. In coastal Oman, wipe off salt film and condensation after outdoor use and avoid leaving it in a vehicle cabin in summer.

Typical applications of 27 II in Oman and the GCC

Handheld multimeters are carried in every plant. In Oman, oil and gas facilities, power stations, desalination plants and petrochemical sites rely on them for control-panel faults, motor circuits, instrument loops and routine electrical checks.

Rugged meters are carried on rounds in oil and gas wellsites, desalination and water treatment plants, construction camps and mines, where hosing down, wind-blown sand and dropped tools are everyday risks. In Oman this includes outdoor substations and quarries.

27 II compared with nearby models

Both rugged models share the mechanical protection described above.

Information to send with an RFQ for 27 II

To prepare an accurate quotation, please send:

• Exact model 27 II and the quantity required.
• Whether the meter is for a lab, a workshop or field service, so the correct accessory set can be quoted.
• Required test lead type and any extra clips or probes.
• Temperature probe, case or magnetic hanger requirements.
• Whether calibration traceability paperwork is needed on delivery.
• Delivery point in Oman or elsewhere in the GCC and the required date.

Storage, handling and spares for the Fluke 27 II

Store the Fluke 27 II 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 27 II, 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

Send the part number 27 II and we will confirm which manufacturer documents are available for this model.

For a quotation, send the part number 27 II, 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.