www.label.pl | LAB-EL Elektronika Laboratoryjna
Laboratory Electronics

THERMOMETER LB-522T 


  • functions: thermometer
  • measurement: temperature
  • built in LCD display
  • wide scope of temperature measurement
  • battery powered
  • optional sensors for different media
  • optional digital result transmission to long distances

Termometr LB-522T

DESCRIPTION

Thermometer LB-522T with a built in LCD display is designed for measurement of air temperature or different medium. It is especially recommended for places where there is high humidity (i.e. freezers, coolers) since it is possible to attach it with an outside sensor resistant to humidity's influence.

The device in a standard version has an inside sensor for temperature measurement (thermometric resistor Pt1000). Optionally, the outside sensor is connected with a meter using a cable of 1...10 m in length (depending on user requirements). In a version with an outside temperature sensor the device is designed for temperature measurement of different mediums in the scope -100...+200°C or (in "E" version) in the scope -200...+550°C according to information provided in technical data "extensions". The thermometer has a minimum and maximum memory function. 

It is a portable device of small size powered from a built in long lasting lithium battery. It is characterised by modern construction based on efficient and energy saving microprocessor servo. Basing on the knowledge of non-linear temperature sensor characteristics and digital calibration data stored during calibration in the device memory the microprocessor built in the device calculates the actual temperature measurement results.

The following measurement results are presented on a big easy to read LCD display and can be sent out from the device through a digital current loop interface approximately every 2 seconds. The output interface beside data transmission can also be used for powering the thermometer – using for this purpose a two cable line (i.e. telephone type) where polarity of attaching the interface cables is random.

The device does not have any mechanical calibration elements (i.e.: potentiometers). The calibration of the device is performed by sending calibration data obtained in the model climate conditions through a digital interface to the non-volatile memory of the device. It guarantees comfort and high calibration accuracy as well as stability of the device's meteorological parameters in time. 

Each thermometer can have an individual calibration certificate issued by the LAB-EL Calibration Laboratory.

TECHNICAL DATA

TEMPERATURE MEASUREMENT
Measurement inaccuracy +/- 0,1°C  +/- 1 last digit, in the scope 0 .. +50°C 
+/- 0,2°C  +/- 1 last digit, in the scope -30 .. +50°C 
+/- 0,6°C +/- 1 last digit, in the scope -100..+200°C
+/- 1,2°C +/- 1 last digit, in the scope -200..+550°C
Scope of measurement -30..+80°C with an inside temperature sensor - LB-522T
-100..+200°C with an outside temperature sensor ( special) - LB-522TX
-200..+550°C with an outside temperature sensor ( special) - LB-522TXE
Measurement resolution 0,1°C in the scope -199,9...+199,9°C
1°C outside of the scope -199,9...+199,9°C
RECOMMENDED CONSTANT WORK CONDITIONS *)
Scope of temperatures 0..40°C
Scope of humidity 20..80%
Level of environment corrosion aggressiveness accord. w/g PN-71/H-04651 B
*) Going beyond recommended constant work conditions (i.e. when installing the device in the open space) requires using additional protection means for the device's electronic part so that water out dropping does not start inside of the device (using additional outside casing).
POWER SUPPLY, MECHANICAL DATA
Power supply source 3,6V / 2,1 Ah inside power supply - lithium battery
5...28V DC, 1 mA optional outside power supply - emulation LB-710
Work time from a battery 5 / 10 years measurement period: 1 minute / 1 hour
Overall dimensions 110 x 65 x 28 mm casing material ABS
Casing airtightness IP30  

INTERFACE

Transmission parameters: in accordance with RS232C, 300 bps, 7 bits of information, without evenness control, 1 stop bit, working in a standard of digital current loop.
INTERFACE FUNCTIONS
  • TXD - constant measurement result transmission and thermometer powering,
  • RXD - storing device calibration data in its non-volatile memory.

OVERALL DIMENSIONS

  • measurement device:  110 x 65 x 28 mm,
  • standard sensor: diameter 6 mm, length 100 mm,
  • special sensor: according to individual settlements.

EXTENDED VERSIONS

The following thermometer versions are available upon a special order:
  • LB-522T - version for temperature measurement using inside sensor in the scope -30...+80°C,
  • LB-522TX - version for temperature measurement using outside sensor Pt1000 in the scope -100...+200°C,
  • LB-522TXE - version for temperature measurement using outside sensor Pt1000 in the scope -200...+550°C.
Attention: The measurement scope provided can be additionally limited by parameters of the outside sensor used.
GOOD CLIMATE IS FAVORABLE
See also
See also
LB-710AT LB-710AT
Rozdzielczość pomiaru temperatury 0,01°C. Wyświetlacz LCD bieżącego wyniku pomiaru. Dwuprzewodowy cyfrowy interfejs S300. Do zastosowania w dużych wieloczujnikowych systemach monitorowania mikroklimatu w przemyśle farmaceutycznym i spożywczym, dla spełnienia najwyższych wymagań systemów jakości. Możliwość adiustacji (regulacji) i wystawienia świadectwa wzorcowania w laboratorium akredytowanym.
LB-718T LB-718T
Zakres pomiaru zależny od konstrukcji zewnętrznego czujnika temperatury, maksymalnie do -200..+550°C. Cyfrowy interfejs RS-485 w standardzie MODBUS RTU. Wbudowany wyświetlacz LCD.
LB-710T LB-710T
Thermometer LB-710T is especially recommended for places where humidity is high (i.e. cooler, fridge) because the measurement probe is very resistant to moisture in its environment. Basing on the sensor construction it can be used for temperature measurement of different media in the scope of –100…+200°C.
Ocena produktu
Thermometer LB-522T with a built in LCD display is designed for measurement of air temperature or different mediums. It is especially recommended for places where there is high humidity (i.e. freezers, coolers) since it is possible to attach it with an outside sensor resistant to humidity`s influence.
Ocena: 5/5, liczba głosów: 14
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