PeakTech 4970
3-in-1 Infrared Thermometer
Operation Manual
About This Document
This manual provides essential information for the safe and effective operation of the PeakTech 4970 3-in-1 Infrared Thermometer. It covers safety precautions, general features, device description, operational modes, measurement considerations, technical specifications, and battery replacement.
1. Safety Precautions
This product complies with European Union directives for CE conformity (2014/30/EU Electromagnetic Compatibility, 2011/65/EU RoHS) and UK regulations (Electromagnetic Compatibility Regulations 2016, Electrical Equipment (Safety) Regulations 2016).
General Warnings:
- Always observe the warning labels on the device.
- Do not expose the device to extreme temperatures, direct sunlight, high humidity, or dampness.
- Do not operate the device near strong magnetic fields (e.g., motors, transformers).
- Allow the device to stabilize to ambient temperature before use, especially after transport between different temperature environments.
- Never operate the device if it is not fully closed.
- Do not operate the device unattended.
- Avoid strong vibrations and shocks.
- Keep hot soldering irons or guns away from the device.
- Replace the battery immediately when the "BAT" symbol appears, as low battery power can lead to inaccurate readings.
- If the device will not be used for an extended period, remove the battery.
- Clean the housing regularly with a damp, lint-free cloth and mild detergent. Do not use abrasive cleaners or solvents.
- This device is intended for indoor use only.
- Opening the device and performing maintenance or repair work should only be done by qualified service technicians.
- Do not place the device face-down on work surfaces to avoid damaging the controls.
- Do not modify the device in any way.
- Measuring instruments do not belong in children's hands.
Cleaning the Device: Clean only with a damp, lint-free cloth and commercially available mild household cleanser. Ensure no liquid enters the device to prevent short circuits or damage.
2. Features
The PeakTech 4970 offers the following features:
- User selectable temperature units (°C or °F).
- Infrared (IR) measuring function.
- User selectable Probe or Clamp temperature measurement.
- Data Hold function to freeze the displayed reading.
- Overrange indication (OL).
- Automatic Power Off.
- Emissivity digitally adjustable from 0.10 to 1.00.
- MAX, MIN, and LOCK modes.
- Resolution of 0.1°C (0.1°F).
Wide Range Applications:
Suitable for food preparation, safety inspections, plastic molding, asphalt production, screen printing, measuring ink and dryer temperatures, HVAC/R, and diesel/fleet maintenance.
3. Device Description
Front Panel Components:
- 1. IR-Sensor: For non-contact infrared temperature measurement.
- 2. Probe Temperature-sensor: For contact temperature measurement using the probe.
- 3. LCD Display: Shows measured values and mode indicators.
- 4. MODE/°C/°F Button: Cycles through measurement modes and selects temperature units.
- 5. IR-Measurement Button: Activates infrared measurement.
- 6. Power ON/OFF Button (Probe/Clamp): Turns the device on/off for probe/clamp measurements.
- 7. ▲/HOLD Button: Adjusts settings and activates the Data Hold function.
- 8. Clamp Temperature-sensor: For contact temperature measurement using the clamp.
- 9. Battery Cover: Provides access to the battery compartment.
LCD Indicators:
The LCD display shows various indicators:
- IR Temperature Indication: IR Measuring indication, MAX/MIN indication, LOCK symbols, Data hold, °C/°F symbol, Symbols for EMS (Emissivity), Low battery indication, Current temperature value.
- Probe/Clamp Temperature Indication: Probe Measuring indication, Clamp Measuring indication, Current temperature value, Data hold, °C/°F-symbol, Low battery indication.
4. Measurement Functions & Operation
4.1. Infrared (IR) Temperature Measurement:
- Power ON/OFF: Press the IRT button to take a reading. The device automatically powers off approximately 15 seconds after the IRT button is released.
- Selecting Temperature Units: Press the IRT button, then press the MODE button until the °C or °F symbol flashes, and press the IRT button again to select the unit.
- Data Hold: Press the IRT button to freeze the current IR temperature reading. The value is held for approximately 15 seconds after the button is released.
- Lock Mode: Useful for continuous monitoring. Turn on by pressing IRT, release to hold data. Press MODE three times to activate LOCK mode (LOCK icon flashes). Confirm by pressing IRT. The thermometer will continuously display the temperature. Press the ▲ button twice to deactivate Lock Mode.
- Emissivity Adjustment Mode: Turn on by pressing IRT, release to hold data. Press MODE five times to enter Emissivity Adjustment Mode. Press ▲ or IRT to adjust the emissivity. Most organic materials and painted/oxidized surfaces have an emissivity of 0.95 (default). For shiny or polished metal surfaces, use masking tape or flat black paint to compensate.
4.2. Probe/Clamp Temperature Measurement:
- Power ON/OFF: Press the ON/OFF button.
- Selecting Temperature Units: Press the MODE button to select °C or °F.
- Data Hold: During measurement, press the "arrow" (▲) button to freeze the reading. Press the "arrow" button again to exit and resume reading.
4.3. MODE Button Functionality:
The MODE button allows cycling through functions like MIN, MAX, LOCK, °C/°F selection, and Emissivity (EMS). The device automatically records MIN/MAX values during measurements.
Flowchart for IR-Temperature Measurement:
The sequence is: Start -> MIN -> MAX -> LOCK -> °C/°F -> EMS -> (loop back to MIN via MODE button).
Flowchart for Probe/Clamp-Temperature Measurement:
The sequence is: Start -> °C -> °F -> (loop back to °C via MODE button).
5. Measurement Considerations
General: Point the IR sensor towards the object. The device automatically compensates for ambient temperature variations, which may take up to 30 minutes for significant changes. Allow several minutes between measuring very low and very high temperatures for the IR sensor to cool down.
Field of View: Ensure the target is larger than the device's spot size. For critical measurements, the target should be at least twice the size of the IR spot.
Distance & Spot Size: As the measurement distance (D) increases, the measurement spot size (S) also increases. The ratio is D:S = 1:1. For example, at 10 units of distance, the spot size might be 10 units.
Locating a Hot Spot: Aim the thermometer outside the area of interest and scan up and down until the hot spot is located.
Notes:
- The device cannot measure through transparent surfaces like glass; it measures the surface temperature of the glass itself.
- Steam, dust, smoke, or other obstructions can prevent accurate measurements by blocking the optics.
6. Technical Specifications
| Parameter | Value |
|---|---|
| IR Temp. Range | -35°C to +260°C (-31°F to 500°F) |
| IR Response Time | < 500 ms |
| IR Accuracy | ± 2% of reading or ± 2°C (± 4°F), whichever is greater |
| Optical Resolution (D:S) | 1 : 1 |
| Emissivity | Adjustable 0.1 to 1.00 |
| Probe Temp. Range | -40°C to 260°C (-40°F to 500°F) |
| Clamp Temp. Range | -40°C to 200°C (-40°F to 392°F) |
| Probe/Clamp Accuracy | ± 1.5% of reading or ± 2°C (± 4°F), whichever is greater |
| Resolution | 0.1°C (0.1°F) |
| Overrange Indication | Display "----" |
| Operating Temperature | 0°C to 50°C |
| Dimensions (WxHxD) | 52 x 183 x 25 mm |
| Weight | 103 g |
Note on Accuracy: Stated accuracy is valid at 18°C to 28°C (64°F to 82°F) and less than 80% Relative Humidity.
Emissivity Values:
| Substance | Thermal Emissivity | Substance | Thermal Emissivity |
|---|---|---|---|
| Asphalt | 0.90 to 0.98 | Cloth (black) | 0.98 |
| Concrete | 0.94 | Human skin | 0.98 |
| Cement | 0.96 | Lather | 0.75 to 0.80 |
| Sand | 0.90 | Charcoal (powder) | 0.96 |
| Earth | 0.92 to 0.96 | Lacquer | 0.80 to 0.95 |
| Water | 0.92 to 0.96 | Lacquer (matt) | 0.97 |
| Ice | 0.96 to 0.98 | Rubber (black) | 0.94 |
| Snow | 0.83 | Plastic | 0.85 to 0.95 |
| Glass | 0.90 to 0.95 | Timber | 0.90 |
| Ceramic | 0.90 to 0.94 | Paper | 0.70 to 0.94 |
| Marble | 0.94 | Chromium oxides | 0.81 |
| Plaster | 0.80 to 0.90 | Copper oxides | 0.78 |
| Mortar | 0.89 to 0.91 | Iron oxides | 0.78 to 0.82 |
| Brick | 0.93 to 0.96 | Textiles | 0.90 |
7. Battery Replacement
A "BAT" symbol on the display indicates low battery voltage (critical region 6.5 to 7.5 V). Reliable readings are only guaranteed for a few hours after the "BAT" symbol first appears. Replace the battery as soon as possible.
Procedure: Remove the battery compartment cover, take out the old battery, insert a new battery, and replace the cover.
ATTENTION: Used batteries are hazardous waste and must be disposed of in designated collection containers.
Battery Regulation Notification:
Dispose of old batteries at a municipal collection point or return them to a local shop at no cost. Disposal in domestic refuse is strictly forbidden. Contaminated batteries are marked with a symbol of a crossed-out refuse bin and the chemical symbol (Cd, Hg, or Pb) of the heavy metal pollutant.
The symbols indicate:
- Cd¹: Cadmium
- Hg²: Mercury
- Pb³: Lead
8. Manufacturer Information
PeakTech Prüf- und Messtechnik GmbH
Gerstenstieg 4 – DE-22926 Ahrensburg / Germany
Phone: +49-(0) 4102-97398-80
Fax: +49-(0) 4102-97398-99
Email: info@peaktech.de
Website: www.peaktech.de
All rights, including translation, reprinting, and reproduction of this manual or parts thereof, are reserved. Technical changes for the advancement of the product are reserved. The units are calibrated at the factory. Recalibration after one year is recommended.
mailto:info@peaktech.de
