PRO 131.2 / PRO 135.2

Features:

✔ 2-channel for type K, J, T, N, R, S, B, E thermocouple probes

✔ Display of the difference and of internal temperature

✔ Fast and accurate

✔ Backlit dot matrix/clear text display, multilingual

✔ Life chart display

✔ Built-in foldable stand and magnet for flexible operation

PRO 131.2 and PRO 135.2 are dual channel high class professional handheld meters for thermocouple probes with a rich set of features, high grade robustness and operating comfort for safe and reliable use. PRO 135 also has data logging capability.

Description

PRO 13x.2 – Precision second thermometer, graphic display

INTRODUCTION
PRO 131.2 and PRO 135.2 are dual channel high class professional handheld meters for thermocouple probes with a rich set of features, high grade robustness and operating comfort for safe and reliable use.
PRO 135 also has data logging capability.

FEATURES
Display
The multilingual large dot matrix/clear text LCD has ergonomic wide-angle visibility from daylight to darkness, thanks to the backlight.
It displays either large scale values, statistical data or the chart of a variable measurement history.
The HOLD feature allows freezing the measurements on display, while the REL feature allows showing the measurement against the measured value.
°C, °F and K units of measurement are available.
If two probes are connected, the instrument calculates and shows the difference between the measurement of the two channels.
On demand, the display of the internal device temperature (reference junction) can also be switched on.
Data Logging (only PRO 135.2)
Large storage capacity: up to 1 million data, file system based.
The logged data are store in CVS files that can be easily viewed connecting the instrument to a PC via USB:
the instrument is seen by the PC as a mass storage device, the data can be read oud and evaluated without software necessarily needed.
Automatic log with configurable interval.
The instruments integrate a Real Time Clock: date and time of each logged sample are stored.
Alarm
Configurable alarm thresholds and optionally hysteresis can be set. LCD indication and buzzer activation when thresholds are exceeded.

CONFIGURATION & MEASUREMENT
Probes
Any K, J, T, N, R, S, B and E standard thermocouple probe can be connected.
Wide range of probes available.
Configurable surface correction factors can be set for use in combination with Senseca contact probes, for the best measuring accuracy.
Connection to PC
Via the USB C port, for viewing or downloading the files stored in the instrument internal memory (only PRO 135.2) or connecting to the application software ProXware.
Statistics
Detection of MIN, AVG (average) and MAX. The user can clear the statistical info to start a new statistical calculation.

Technical Data

Technical Specifications

Storage capacity

Only PRO 135.2: Up to 1 million data sets, file system based
Each data set includes date/timestamp and measurement.
Data are stored in CVS files.

Logging type

only PRO 135.2: Automatic with manual start/stop

Accuracy

±(0.2 °C + 0.2% of measured value) ± 1 digit (J, K, N, T, E)
±(0.5 °C + 0.4% of measured value) ± 1 digit (S, B, R)

Measurement rate

4 meas/s

Weight

320 g incl. battery

Measuring range

K: -220.0…+1372.0 °C / -364.0…+2501.6 °F
J: -200.0…+1100.0 °C / -328.0…+2012.0 °F
N: -200.0…+1300.0 °C / -328.0…+2372.0 °F
S: -50.0…+1750.0 °C / -58.0…+3182.0 °F
T: -200.0…+400.0 °C / -328.0…+752.0 °F
E: -60.0…+850.0 °C / -76.0…+1562.0

Operating conditions

-5 ... +50 °C; 0 ... 85 % RH (non-condensing)

Storage temperature

-25 … 65 °C (without batteries)

Dimensions

170 x 78 x 38 mm

APPLICATIONS

PRO 131.2 / PRO 135.2 Dual-Channel Handheld Thermometers

The PRO 131.2 and PRO 135.2 are high-precision, dual-channel handheld thermometers designed for professional temperature measurement using thermocouple probes. Their robust construction, wide compatibility, and advanced features make them ideal for a variety of demanding applications, including:

- Industrial Process Monitoring:
  Accurate temperature measurement and monitoring in manufacturing lines, process control, and quality assurance for industries such as metalworking, plastics, chemical, and food processing.
- Research and Laboratory:
  Reliable data collection and analysis in scientific research, laboratory experiments, and calibration tasks, with support for multiple thermocouple types and data logging (PRO 135.2).
- HVAC and Building Services:
  Temperature checks and diagnostics for heating, ventilation, air conditioning, and refrigeration systems to ensure optimal system performance.
- Maintenance and Service:
  On-site troubleshooting, maintenance, and inspection of machinery, electrical systems, and industrial equipment, aided by the device’s portability and fast response.
- Energy and Utilities:
  Monitoring and verification of temperature in power generation, transmission, and distribution systems to maintain safety and efficiency.
- Food & Beverage Industry:
  Spot checks and continuous monitoring of process temperatures for food safety and regulatory compliance.
- Environmental and Field Work:
  Field measurements in environmental monitoring, geotechnical investigations, and outdoor research, benefiting from the instrument’s shockproof, waterproof design (IP67).
- Automotive and Aerospace:
  Testing and validation of components, engines, and systems where precise temperature data is critical for safety and performance.