Portable thermometer with an LB-560A probe is designed for measurements of temperature in various media. The thermometer integrates a pointed temperature probe — 25 cm in length and 4 mm in diameter — which may be inserted into the material to be measured. It is a portable meter with battery power supply (which may be charged in a charger or via the computer’s USB port). Temperature measurement result is refreshed a few times per second. This portable thermometer with a probe and an alarm may function as temperature recorder — it features a large, built-in measurement memory.
The thermometer features an alarm signalling function — when the set temperature threshold (lower or upper) is breached, a sound alarm is triggered. Additionally, this thermometer with an alarm presents any breaches of temperature limit on the display.
The temperature measurement may be frozen on the display (HOLD function). The meter features an auto power off function — the auto power off time may be set within a range of 1…30 minutes.
Additionally, the thermometer is equipped with a five-button keyboard, enabling, among others, the recording specifications to be adjusted (e.g. recording interval), and the alarm to be set. The keyboard buttons click when pressed. The results are presented on a backlit LCD display. The following measurements are available:
At the same time, the current temperature is displayed in the bottom row and the selected measurement (MX, MIN, Tavg, Time) in the top row of the display.
This temperature recorder features a modern construction based on an efficient and power-saving microprocessor controller. On the basis of the known non-linear characteristics of the temperature sensor (Pt1000 thermometer resistor) and digital calibration data stored during calibration on the device storage memory, the built-in microprocessor calculates the current temperature measurement results. An advantage of the electronic thermometer is the lack of mechanical calibration elements (e.g. potentiometers). The portable thermometer calibration requires sending calibration data via digital interface to the instrument’s permanent storage, obtained from the calibrated temperatures. It ensures convenience and high calibration accuracy as well as stable temperature measurements over time.
The thermometer may additionally come with advanced software for Windows PC — the Logger application — enabling:
A dedicated LB-376A USB interface is used for communication between the thermometer and the computer. It also enables battery charging.
The method of recording measurements in the thermometer’s built-in storage memory is defined by the user via the Logger application or the keyboard. In order to configure the recording:
|Measurement accuracy (-40…+80°C)||±0.1°C ±1 final digit|
|Measurement uncertainty (-50…+160°C)||±0.2°C ±1 final digit|
|Measurement resolution||0.01°C for the range of -100…100°C
0.1°C in the remaining range
|Memory capacity||31,488 entries for the resolution of 0.1°C
21,000 entries for the resolution of 0.01°C
|Recording resolution||0.1°C or 0.01°C|
|Temperature recording range||-200…550°C|
|Recording interval pitch||1 second|
|Recording interval range||1 sec. … 99 minutes 59 sec.|
|Battery||NiMH 3.6 V/800 mAh battery|
|Number of battery charging cycles||1,500|
|Battery operation time (after charging)||backlight on — 20 hours|
|backlight off — 530 hours|
|recording (every 2 min) — 1 year|
|OPERATING TEMPERATURE RANGE|
|RECOMMENDED CONTINUOUS OPERATING CONDITIONS *)|
|Degree of environmental corrosivity, according to PN-71/H-04651||B|
*) Exceeding the recommended continuous operating conditions (e.g. when installing the device outdoors) requires the use of additional protective measures for the electronic part of the device against the eventuality of water entering the device.