Fluke 572-2 High Temperature Infrared Thermometer

Produktpositionierung: Industrial handheld infrared thermometer combining infrared and K-type thermocouple. Designed for long-distance high-temperature measurement, widely used in power, Metallurgie, cement and petrochemical industries.

Wichtige Spezifikationen

Infrared Temperature Range: -30 ℃ ~ 900 ℃

Distance-to-Spot Ratio (D:S): 60:1 (90% Energie), minimum spot diameter φ19 mm, dual-laser targeting

Infrared Accuracy (at 23℃ ambient):

≥0℃: ±1℃ or ±1% of reading, whichever is greater

-10 ~ 0℃: ±2℃

＜-10℃: ±3℃

K-type thermocouple input (contact temperature measurement): -270 ℃ ~ 1372 ℃

Emissivity: 0.10 ~ 1.00 einstellbar (0.01 step), built-in material emissivity lookup table

Ansprechzeit: <500MS (95%)

Spectral Band: 8~14 μm

Datenspeicherung: Bis zu 99 Aufzeichnungen, USB export supported

Anzeige: MAX/MIN/AVG/DIF, high/low temperature audible & optischer Alarm, adjustable backlight

Stromversorgung: 2×AA batteries; Nettogewicht: 322G

Hauptmerkmale

Dual-Laser Targeting: Offset dual lasers mark the measurement area for precise targeting of small objects from long distances
Dual Measurement Mode: Non-contact infrared + K-type thermocouple contact measurement, balancing operational safety and accuracy verification
Industrial Robustness: Ergonomic anti-slip housing, intuitive menu, multi-language support
Alarm Function: Audible and visual alert on temperature threshold violation, suitable for inspection and predictive maintenance of equipment

Typische Anwendungen

Energiewirtschaft: Switchgear, Sammelschienen, Transformatoren, cable joints temperature inspection

Metallurgie / Heat treatment: Furnace body, rolls, casting surface temperature

Zement, Glas, Petrochemie: Kiln, pipeline, reactor surface temperature measurement

Machinery industry: Motor, bearing and high-temperature equipment inspection

Standardpaketinhalt

Fluke 572-2 Haupteinheit

K-type bead thermocouple probe

USB-Kabel

2 AA batteries

User manual and certificate of conformity

Comparison with Related Models

Fluke 572-2: 60:1 Verhältnis, max infrared temp 900℃, with K-type thermocouple and data storage

Fluke 568: 50:1 Verhältnis, max infrared temp 800℃

Fluke 62 MAX+: 12:1 Verhältnis, max temp 650℃, entry-level industrial model

Auswahl & Betriebshinweise

D:S=60:1: The spot size increases with measurement distance; shorten distance when measuring small targets
Polished metallic surfaces have low emissivity and may cause large measurement error. High-temperature tape is recommended to raise emissivity
Infrared measures surface temperature only; K-type thermocouple is used for contact temperature comparison
Not suitable for measurement through glass or transparent plastics (infrared radiation will be blocked)

Fluke 572-2 Troubleshooting Checklist

Recommended troubleshooting sequence: Power supply → Lens / Optical path → Parameter setting → Ambient condition → Hardware / Error code; Do NOT disassemble the unit. Disassembly of internal laser and sensor will void calibration and warranty.

Power Supply Faults

Symptom	Grundursache	Abhilfe
Blank screen, no response when trigger is pulled	Sleep mode / Dead battery / Umgekehrte Polarität	1. Pull trigger to wake up; 2. Replace with new AA alkaline batteries, verify polarity; 3. Inspect battery contacts for oxidation or electrolyte corrosion
Low battery icon displayed, unstable readings	Insufficient battery voltage	Replace batteries immediately; Accuracy is unreliable under low power, discontinue inspection
Emissivity, time and stored data lost after battery replacement	Battery removal exceeds 1 min, mainboard power reset	Replace battery promptly upon low power alert; Complete battery swap within 1 Minute; Reconfigure parameters afterwards

Anzeige & Error Codes

Symptom	Grundursache	Abhilfe
— shown on screen	Target temperature out of range (＜-30℃ or＞900℃)	Confirm target temperature is within measuring range; Infrared max 900℃, K-type thermocouple max 1372℃
EEPROMErr / CalAreaErr / ProbCalEr	Damaged internal storage / calibration data	No on-site repair possible. Stop operation and send to Fluke authorized service center
Alarm light flashes with buzzer sound	Hoch / low temperature alarm triggered	Enter menu to check threshold, modify or disable alarm as required

III. Laser Targeting Faults

Symptom	Grundursache	Abhilfe
Valid infrared reading but dual laser does not turn on	Low battery; Ambient temp＞40℃; Laser disabled in menu	1. Batterie austauschen; 2. Move to location with ambient temp ≤40℃; 3. Enable laser in menu
Blurred or offset laser spot	Dirty or scratched lens	Linse reinigen; Replace lens assembly if scratched

Inaccurate / Drifting Readings (Most Common Fault)

Distinguish first: Infrared reading error VS K-type thermocouple probe error

Inaccurate Infrared Readings

Wrong emissivity setting: Polished metal has low emissivity leading to high reading; Non-metal has high emissivity. Adjust emissivity from 0.10~1.00; Apply high-temperature tape for shiny metal (emissivity≈0.95)
Field-of-view spot issue: D:S=60:1. Too long distance results in spot larger than workpiece and captures surrounding hot/cold objects. Shorten distance and ensure full spot coverage on target surface
Linsenverschmutzung: Staub, Öl, moisture attenuate infrared signal

✅ Cleaning procedure: Blow with compressed air → Brush gently with camel hair brush → Wipe with cotton swab moistened with pure water; Do NOT use alcohol, acetone or other solvents, which will damage infrared lens

Ambient interference: Hot air stream, Dampf, smoke, Glas / transparent plastic blocking optical path; starke elektromagnetische Störungen (Schweißgerät, induction heating); water film or oxide scale on target surface
Thermal shock: Sensor unstable when moved from drastically different temperature environment. Let instrument stabilize ≥30 minutes on site before measurement
Reflected heat from surrounding hot sources causes falsely high reading: Adjust measurement angle to avoid hot background reflection

No Reading / Abnormal Reading on K-type Thermocouple Channel

Loose or oxidized probe connector; gebrochener Draht

✅ Remedy: Re-seat connector; Cross-test with 80PK series K-type probe to identify fault on probe or instrument jack

Wrong thermocouple type selected: Unit only accepts K-type. S/T/J type probes cannot read correctly
Cold junction compensation anomaly: Large temperature difference at probe terminal
USB Communication & Data Export Faults

Symptom	Grundursache	Abhilfe
PC fails to recognize instrument and export records	Instrument not powered on; FlukeView Forms software not running; Damaged USB cable	1. Hold trigger to keep unit powered; 2. Launch FlukeView Forms software; 3. Replace USB cable for test; 4. Check PC USB port
Stored data lost	Battery depleted for long time; Battery replacement timeout	Export records regularly; Replace battery at low power prompt

Mechanisch & Appearance Faults
Sticky trigger: Dust accumulated in trigger gap, clean with dry brush, Do NOT apply lubricant
Cracked housing: Damage from drop impact. Crack does not affect temperature reading but reduces ingress protection, keep away from moisture
Lens scratch: Scratch introduces measurement error, return to factory for lens replacement and recalibration

VII. Fehlerurteil & Service Standard (When to Stop Using)

✅ On-site repairable: Battery replacement, lens cleaning, parameter reset, probe cross-verification

❌ Must send to official service, no disassembly allowed:

EEPROM or calibration related error codes
Cracked lens, internal water condensation
Persistent reading deviation after drop impact, cannot be corrected by lens / emissivity adjustment
Battery leakage corroding mainboard contacts

VIII. Quick On-Site Self-Check Procedure

Install new batteries and stabilize for 30 min under ambient condition
Linse reinigen, restore factory menu setting, set emissivity to 0.95
Measure warm water (ca. 80~90℃) in infrared mode, connect K-type thermocouple for contact comparison; Deviation shall stay within specified accuracy
Verify laser, high/low alarm, backlight and trigger hold function
Test USB connection and data read/write

Fluke 570 Serie (572 Family) Modellliste

Consists of Legacy 570 Serie (Auslaufmodell) and Currently available 572-2. Fluke 570 series is industrial high-precision long-distance infrared thermometer with K-type thermocouple input.

Vermächtnis 570 Serie (Auslaufmodell, available in spare / second-hand market)

Modell	Schlüsselkonfiguration	Hauptunterschiede
Fluke 572 (Vermächtnis, no -2 Suffix)	-30~900℃, D:S=60:1, 3-point laser targeting, K-type thermocouple input, RS232 interface	Old version with serial port, no USB, eingestellt
Fluke 574	-30~900℃, D:S=60:1, 3-point laser, RS232, Datenprotokollierung, optional close-focus 50:1 kleiner Fleck	Enhanced data logging vs 572; 574-NI: version without infrared calibration certificate
Fluke 576	-30~900℃, D:S=60:1, built-in digital camera for image archive, USB, 3-point laser	Top-tier model with image capture, long discontinued

Current Active Model: Fluke 572-2 (Replaces legacy 572)

Your target model, current main production unit

Temperaturmessung: Infrared -30 ~ 900℃; K-type thermocouple -270 ~ 1372℃

D:S=60:1, dual-laser targeting; 99 local storage records, USB-Export

Dual mode (infrared + contact thermocouple), hörbar & visual high/low temperature alarm

Branchen: Leistung, Metallurgie, Petrochemie, cement high-temperature inspection

III. Related Dual-Mode Infrared Thermometers (Commonly compared with 572-2 for selection)

Not part of 570 Serie, but Fluke handheld infrared + K-type thermocouple models frequently referenced in project selection

|—|—|—|—|

|Fluke 568|-30~800℃|50:1|Dual mode, lower spec alternative to 572-2 with lower max temperature|

|Fluke 568 EX|-30~800℃|50:1|Intrinsically safe explosion-proof version for hazardous oil & gas area|

|Fluke 561|-40~550℃|12:1|HVAC dedicated entry-level dual mode unit|

Infrared-only Models (No thermocouple, reference for category comparison, not in 570 Serie)

Fluke 62 MAX / 62 MAX+: -30~650℃, D:S=12:1, IP54, 3m drop resistance

Fluke 64 MAX: -30~600℃, D:S=20:1

Model Version Remarks
572-2 has no sub-models, only standard main unit. Variants come from accessory kits: Optional carrying case, extended thermocouple probe, tripod
Vermächtnis 572/574/576 permanently discontinued. Only surplus stock, refurbished or second-hand units available; calibration and spare parts are difficult to source. Wählen 572-2 for new projects
Key distinction: Legacy models use 3-point laser; neu 572-2 uses dual laser targeting system