1551A/1552A Ex

Users Manual

Primary Display

Push Ato toggle the numeric display between the current reading, minimum, maximum, and 1-minute trend values in °C or °F as calculated since power up or since the last reset of values. Push and hold the A button for 2 seconds until "CLR" shows to reset the MIN/MAX/TREND values.

Stability Display

The Stability Display shows the general stability level relative to a user-configurable stability limit. There are four presets for stability shown in °C or °F (0.01, 0.1, 1.0, or 10.0). When the limit is exceeded, it also shows the general direction in which the readings are presently moving. The stability level is calculated from a moving sample window of 6 seconds, with the value extrapolated to a 1-minute time base.

Segments are turned on to indicate the stability level as follows:

•Center only (stable) - when half of the 1-minute trend value is less than or equal to the stability limit, i.e. maximum deviation -limit to +limit.

•Center plus one arrow up or down (depending on the trend) - when half of the 1- minute trend value is greater than the stability limit and is less than or equal to twice the stability limit.

•Center plus two arrows up or down (depending on the trend) - when half of the 1- minute trend value is greater than twice the stability limit and is less than or equal to three times the stability limit.

•Center plus three arrows up or down (depending on the trend) - when half of the 1- minute trend value is greater than three times the stability limit.

Setup and Configuration

Push B to enter the setup modes. Inside the setup modes the buttons work as follows:

AExit to the main display.

BStep to the next menu item, exit to the main display after the last item. C Enter the data-edit mode for the present menu item.

During the data-edit mode, use K and L to scroll through the values. Push C to save and exit back to the menu item.

The following sections describe the setup items in the order in which they appear.

Temperature Unit Selection

The Temperature Unit Selection Menu lets you choose the unit used when showing the primary variable.

KChange the unit °C or °F. L Change the unit °C or °F. C Exit back to menu item

Stability Limit

The stability limit setting is used to find when the secondary display will show that the reading is stable. There are four preset settings for stability (0.01, 0.1, 1.0, or 10.0) expressed in the presently selected units.

KChange the unit-stability limit setting to the next greater setting. L Change the unit-stability limit setting to the next lesser setting. C Exit back to menu item

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Fluke 1552A EX Primary Display, Stability Display, Setup and Configuration, Temperature Unit Selection, Stability Limit
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1551A EX, 1552A EX specifications

The Fluke 1552A EX and 1551A EX are specialized temperature calibration tools designed for professionals working in hazardous environments. These portable devices cater to the needs of industries such as petrochemical, pharmaceutical, and food processing, where accuracy and safety are paramount.

One of the standout features of the Fluke 1552A EX is its ability to measure a wide temperature range with exceptional accuracy. The instrument can operate from -200°C to 700°C (-328°F to 1292°F), making it versatile for various applications. It comes equipped with advanced thermocouple capabilities, supporting multiple thermocouple types, including J, K, T, E, N, R, and S. This versatility ensures that users can perform calibrations on different temperature sensors seamlessly.

The 1551A EX, on the other hand, capitalizes on the innovations seen in the 1552A but is particularly designed for lower temperature applications, operating from -200°C to 1200°C (-328°F to 2192°F). It also allows users to interchange between various temperature probes, granting flexibility for different measurement needs. Both models feature a high-resolution display that provides clear and immediate readings, further enhancing user experience.

Another significant technology utilized in both the 1552A EX and the 1551A EX is Fluke’s Calibration Technology. This feature allows for consistent and precise adjustments to be made, ensuring that results remain accurate over time. The instruments are also designed following the latest standards for safety, featuring explosive atmosphere compliance, which allows them to operate safely in environments where flammable gases or vapors may be present.

In terms of usability, both models incorporate a user-friendly interface that simplifies operations, even for those less familiar with calibration procedures. The devices also include rechargeable battery options, extending their portability for use in the field. Additionally, they are housed in durable enclosures, designed to withstand the rigors of industrial environments.

Overall, the Fluke 1552A EX and 1551A EX are top-notch calibration instruments that not only meet the rigorous demands of hazardous work environments but also deliver exceptional performance, accuracy, and safety features that professionals can rely on for their temperature calibration needs.
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