The LB-533T WiFi thermometer is a wireless 4-channel temperature recorder. The recorder is equipped with WiFi and USB interfaces. LB-533T WiFi thermometer is powered from internal, exchangeable batteries (2 x AA 1.5 V or 2 x AA 1.2 V rechargeable batteries) or optionally from an external DC power supply, e.g. from a vehicle. For the temperature measurement the WiFi thermometer uses one to four external Pt-1000 sensors. Temperature measurement results are displayed on a clear LCD display.
The LB-533T WiFi thermometer/recorder features additional inputs for connecting two external switches. If a reed relay sensor functions as the switch, then it is possible to monitor and signal door opening (for example, the doors of a refrigerator, vehicle, warehouse room).
If the LB-533T WiFi thermometer is powered from rechargeable batteries and concurrently from an external power supply source, the rechargeable batteries are not charged at that time. The external power source is used for powering thethermometer only. The rechargeable batteries should be charged when they are taken out of the instrument, in special chargers.
The LB-523T WiFi recorder features a large-capacity memory for storing measurement results, which — for example, for the LB-533T WiFi thermometer with the recording interval set to 30 minutes — is sufficient to record entries for approximately one year in one recording session. The data are stored in the memory and “overwritten”, which means that when the memory is full, the oldest recordings are deleted. The WiFi recorder allows threshold temperature values to be set and signal whenever these values are exceeded.
In a typical application the WiFi thermometer performs measurements which it records in the memory over a set interval (ranging from 1 minute to 4 hours and 15 minutes). Over a set interval the recorder switches-on the WiFi interface and connects with a WiFi access point (WiFi router, Access Point), and then exchanges data with the LBX server, switches-off the WiFi module and switches to measurement and recording mode.
WiFi router parameters and IP address of the LBX server for recorders to connect with must be set during the device configuration. The configuration of LB-523T WiFi recorder is performed via USB interface. The parameters of the WiFi router (AP) with which the LB-533T connects should be defined by using the LBX software. Among others, the configuration should include: name of the WiFi (SSID) network, and in the case of the secured network, the access password. The LB-533T recorder may be assigned with a permanent IP address, or a temporary address may be selected from the addresses assigned by the WiFi router, according to the DHCP protocol. Additionaly, the IP address and port number of the LBX server for the LB-533T to connect with should be configured. In the absence of a permanent, public IP address for the computer where the LBX server is installed, a proxy server may be used. A proxy server may be installed on any given computer with a constant, public IP address. In particular, clients using LB-523 and LB-533T WiFi recorders may use a proxy server shared by LAB-EL. This server provides a proxy service between LB-533T WiFi recorders and any customer’s computer with Internet access.
The WiFi thermometer/recorder may signal alarm conditions. The alarm generates an additional report to the LBX server, irrespective of the set interval for establishing connection. The alarm may by triggered by:
Additionally, it is possible to set an alarm delay, so that the alarm is not triggered by a short-term incident. Alarm incident failure is also signalled by an additional report to the LBX server. Thanks to the alarm reporting function there is no threat of “overlooking” an alarm in the case of long intervals between planned reporting events. The LBX software may react differently after receiving information about an alarm — this depends on the equipment controlled by the LBX software and its configuration. In a particular case, the LBX server may send an email or a text message to the indicated person or perform any other programmed action.
The LB-533T WiFi thermometer/recorder is designed to monitor and document course of technological processes and transportation (so-called cold supply chain) in production facilities and warehouses, especially in the pharmaceutical, medical and food industries. It is especially useful in meeting the requirements for ISO and HACCP production quality control in food and pharmaceutical industries. May be used to monitor temperature and door opening in distribution centres, growing cellars, laboratories, refrigerators and cold storage facilities. The LB-533T WiFi recorder/thermometer ensures the safety requirements for the storage of vaccines and medicines in the State Sanitary Inspection facilities, outpatient clinics, hospitals and pharmacies.
|Temperature measurement uncertainty *3) of LB-533T, LB-533TE||±0.2°C||±1 final digit, within the range of 0… +50°C|
|±0.6°C||±1 final digit, within the range of -30… +50°C|
|±1.2°C||±1 final digit, within the range of -100…+200°C|
|±2.4°C||±1 final digit, within the range of -200…+550°C|
|Measurement range||-100…+200°C||with an external temperature sensor, for LB-533T|
|-200…+550°C||with an external temperature sensor, for LB-533TE|
MEASUREMENT MEMORY, COMMUNICATION
|Memory capacity||30,000 entries, for LB-533T/TE||temperature|
|WiFi interface||2.4 GHz IEEE 802.11 b/g|
|Number of WiFi channels||13|
|Maximum range||100 m||in open terrain|
|30 m||depending on local building characteristics and equipment|
|POWER SUPPLY, MECHANICAL DATA|
|Power source||2 x 1.5 V AA batteries||AA alkaline batteries|
|2 x 1.2 V AA rechargeable batteries||Recommended Ni-MH Eneloop HR-3UTGB Sanyo or BK-3MMC Panasonic rechargeable batteries|
|6…42 V/500 mA||Optional external power supply source—e.g. a motor vehicle|
|Battery operation time||This time is not unequivocally defined. This depends on many specifications, including: the set interval of establishing communication via WiFi, router and Ethernet/Internet signal quality and the set interval between measurements. With a typical, decent WiFi and Ethernet/Internet network signal, an operation temperature of 20°C, dedicated Eneloop rechargeable batteries fully charged, and the following settings:
- WiFi connection interval: 30 minutes;
- measurement and recording every 10 minutes;
the operation time of the batteries is 6–12 months.
|Dimensions||90 x 120 x 38 mm||dimensions without optional external antenna and holder|
|Material, housing protection class||ABS||IP 30|
|Operating temperature range||-20…+60°C|
By special order, the following set-ups are available:
Remark (*1): The given measurement range may be additionally limited by the parameters of the external sensor used.
Remark (*2): The battery is not subject to warranty.
Remark (*3): The instrument is by default calibrated with the use of the standard resistor. All channels are calibrated, irrespective of the number of installed probes. This means that the user may, at his own discretion, connect an additional thermometer and activate the input.
The given measurement uncertainty stems from the use of a class B thermistor in the temperature sensor. In the case of wider measurement ranges, the measurement uncertainty may be corrected through an individual calibration of the thermometer in a given channel with a concrete probe. Individual calibration is available as an option, which should be indicated in the order or ordered independently as a service. The service will be performed after submission of the instrument to LAB-EL Calibration Laboratory.