Fluke 179 True-RMS Digital Multimeter with Temperature

179 true-RMS multimeter with built-in temperature explained

The Fluke 179 True-RMS Digital Multimeter (179) is a handheld true-RMS digital multimeter of the Fluke 170 series. It is the top model of that series because it adds contact temperature measurement to the voltage, current, resistance, capacitance and frequency functions of its siblings. Seven Star LLC supplies 179 in Oman and the GCC as an independent supplier in Muscat, not affiliated with the manufacturer.

The model number is short, so the table below sets out what the identifiers mean when you compare it with the 175 and 177 in the same family.

179 technical specifications

Values are taken from the manufacturer product page for the Fluke 179. Accuracy figures are the best accuracy for each function.

How the Fluke 179 True-RMS Digital Multimeter works

The 179 converts every input into a digital value with a 6000-count display and shows a bar graph beside it, so a fast-changing signal can still be followed even when the digits are moving. True-RMS conversion means the instrument calculates the heating value of the waveform instead of assuming a pure sine wave. This matters on supply lines that feed variable-speed drives, switch-mode power supplies and lighting ballasts, where an average-responding meter reads low.

For temperature the meter takes a K-type thermocouple input and applies cold-junction compensation internally, so a bearing housing, a terminal lug or a cable gland can be checked without a second instrument. Display Hold and Auto Hold freeze a stable reading so that it can be recorded when the display is out of view, and Min/Max/Average recording captures drift or an intermittent supply dip while you do something else.

Key features

• Manual and automatic ranging with Display Hold and Auto Hold
• Min/Max/Average recording for intermittent faults
• Backlit display with analog bar graph
• Closed-case calibration through the front panel
• Integrated protective holster

Where 179 fits and related Fluke models

Within the 170 series the 179 sits above the 175 and the 177. All three share the same measurement ranges for voltage, current, resistance, capacitance and frequency; the 179 is the one that also reads temperature, and it shares the 0.09% DC voltage accuracy with the 177. Choose the 179 when one tool must cover electrical faults and quick thermal checks on the same call-out.

For more demanding industrial work, such as VFD output measurements, logging or wider temperature ranges, buyers usually look at the 87V, 287 or 289 instead. For handheld work in tighter budgets the 115, 116 and 117 are compact alternatives rated to CAT III 600 V.

Selection checklist for 179

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

• Voltage level of the installations: the 179 is rated CAT III 1000 V and CAT IV 600 V.
• Need for temperature: if not needed, the 177 gives the same DC accuracy.
• Maximum current: the direct current input is limited to 10 A, so larger currents need a clamp meter.
• Accessories: temperature probe included; extra leads, clips and case are separate.

Safe use, care and maintenance of 179

• 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 179 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 179 True-RMS 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 179 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.

Typical uses include checking control-panel supplies, verifying motor-starter circuits, reading 4-20 mA loop voltage drops at a marshalling cabinet and finding an overheated terminal on a distribution board. In hot Gulf plant rooms, the temperature function helps confirm whether a connection is running warm before it fails.

179 compared with nearby models

The comparison is a simplified view. Always check the manufacturer datasheet for full ranges and accuracy conditions.

Information to send with an RFQ for 179

To prepare an accurate quotation, please send:

• Exact model 179 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.

Documents and quotation

A manufacturer datasheet for the Fluke 179 True-RMS Digital Multimeter 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 179, 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.