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Smartag Recording Temperature Indicators

Smartag is a line of recording temperature indicators developed and manufactured by Hladverk Group LLC. They continuously measure and record temperature — and, in certain modifications, relative humidity — during storage and transport of products. The measuring instrument type is approved and entered in the Federal Register of Approved Measuring Instruments, so Smartag data can be presented during inspections and audits.

Smartag recording temperature indicator in a housing with a USB connector, LEDs and a start/stop button
Smartag: USB connector, three status LEDs, “Start/Stop” button, serial number with barcode.

Applications

  • Temperature mapping of warehouses and cold rooms: an accuracy of ±0.5 °C over −30…+40 °C meets the requirement of the EEC Guidelines, and a fleet of identical verified instruments delivers consistent results.
  • Monitoring of refrigerators and rooms in pharmacies, healthcare facilities and laboratories.
  • Transport of medicinal products, vaccines, biological samples and food in insulated containers and refrigerated trucks.
  • Monitoring systems: the Smartag Zond probe connects to data loggers and monitoring systems with an I2C interface.

Modifications

Single-use Smartag temperature indicator in a plastic housing with a cap
Single-use Smartag in a plastic housing.
Single-use Smartag temperature indicator in a soft housing
Single-use Smartag in a soft housing.
Main Smartag versions: mini, Smartag and T, RHT, TZ with probe
Main versions. The full list of modifications is given in the type description.
Based on measuring instrument type description No. 91745-24 and the specifications of supplied products. Modifications differ in the number of channels, power sources and metrological characteristics.
ModificationMeasuresFeaturesVerification interval
Smartag minitemperaturesingle use; “OK” and “Threshold alarm” LED indication; 1–2 thresholds; delayed start; does not generate a PDF report2 years
Smartagtemperaturesingle use; housing with USB connector, flash drive with automatic PDF report; LED indication, “Start/Stop” button; 1–6 thresholds; recording time at least 700 h2 years
Smartag Ttemperaturebuilt-in digital sensor2 years
Smartag RHTtemperature and relative humiditybuilt-in digital sensor1 year
Smartag TZtemperature and relative humidityexternal digital sensor on a cable with connector1 year
Smartag Zondtemperature; temperature and humiditymeasuring probe for Smartag TZ and for monitoring systems with an I2C interface; plastic housing or sealed stainless steel sleeve, including for non-aggressive liquids—
Smartag RS-Ttemperaturebuilt-in digital sensor2 years
Smartag RS-RHTtemperature and relative humiditybuilt-in digital sensor1 year
Smartag tracktemperaturebuilt-in digital sensor2 years

Metrological characteristics

Temperature measuring range−30 to +70 °C
Maximum permissible absolute error, temperature±0.5 °C from −30 to +40 °C inclusive; ±0.7 °C above +40 up to +70 °C
Relative humidity measuring range5 to 95 % (Smartag RHT, Smartag TZ, Smartag RS-RHT)
Maximum permissible absolute error, humidity±5 %
Verification procedureMP-779/01-2024
Verification interval2 years; 1 year for Smartag RHT, Smartag TZ, Smartag RS-RHT
Federal Register of Approved Measuring Instruments No.91745-24, type approval certificate valid until 28 March 2029

Technical specifications

Operating conditionstemperature −30…+70 °C, pressure 84–106.7 kPa, humidity 5–100 % non-condensing
Housingcompact, ABS plastic; built-in or remote sensor
Dimensionsmax. 89 × 52 × 40 mm
Weightmax. 55 g
Supply voltage3.0 V
Average service lifeat least 5 years
Mean time between failuresat least 30,000 h
Identificationserial number on the label
Software protectionmetrologically significant embedded software, “high” protection level according to R 50.2.077-2014
User software“Smartag User” — configuration and readout of reusable temperature indicators (as per the type description); for Smartag with USB — software in Russian and English

Data and report

Laptop with a Smartag temperature indicator plugged into a USB port and a PDF report open
The computer recognizes Smartag as a removable drive; the PDF report with a chart opens without installing any software. Illustration.

Smartag in the USB housing works as a flash drive: once recording is stopped, it is plugged into any computer, and a PDF report with a chart, minimum and maximum values and excursions is generated automatically — no software installation needed. The logging interval, thresholds (1 to 6) and delayed start are configurable. For mapping studies, reports from all instruments are loaded into our software, which builds tables and heat maps in the format of the EEC Guidelines.

Smartag mini does not generate a report: the result is visible immediately from the LED indication on the housing.

How to check verification

  1. Find the serial number

    It is printed on the temperature indicator label and stated in the data sheet.

  2. Open FSIS Arshin

    Enter the type number in the Federal Register of Approved Measuring Instruments — 91745-24 — and the instrument serial number.

  3. Check the result

    The verification must be valid for the recording dates, with the result “fit for use”.

No verification mark is applied to the temperature indicator: verification is confirmed by the record in FSIS Arshin (Rosstandart's verification database) and, if required, by a verification certificate.

Scope of delivery

ItemQuantity
Smartag recording temperature indicator (modification as ordered)1 pc.
Charger with microUSB cable (for modifications with a rechargeable battery)1 pc.
Operating manual1 copy
Data sheet1 copy

How to choose a modification

TaskWe recommend
One-off shipment, visual check at receipt is sufficientSmartag mini
Transport or storage with full recording and a PDF reportSmartag
Temperature mapping of a warehouse or cold roomSmartag, Smartag T
Mapping and monitoring including humidity, pharmacy premisesSmartag RHT
Measurement in liquid, at a hard-to-reach point, or inside a chamber with the instrument outsideSmartag TZ with Smartag Zond
Sensor for your own monitoring systemSmartag Zond with I2C interface
Temperatures below −30 °Coutside the Smartag range — we will select a solution as part of a monitoring system

Frequently asked questions

Who manufactures Smartag temperature indicators?

Hladverk Group LLC. The company is named as the manufacturer in measuring instrument type description No. 91745-24.

Can Smartag be used for temperature mapping?

Yes. Over −30…+40 °C the accuracy is ±0.5 °C, which meets the requirement of the EEC Guidelines. A single temperature map uses temperature indicators of the same type with valid verification.

How does Smartag differ from Smartag mini?

Both are single-use and measure temperature from −30 to +70 °C. Smartag records values for at least 700 hours, supports up to 6 thresholds and generates a PDF report when plugged into USB. Smartag mini is simpler: 1–2 thresholds and LED indication without a report.

How often does Smartag need verification?

Every 2 years; for the Smartag RHT, Smartag TZ and Smartag RS-RHT modifications — every year.

Is Smartag suitable for −80 °C freezers?

No, the lower limit of the measuring range is −30 °C. For deep-freeze applications we select a solution as part of a monitoring system.

Can a Smartag sensor be connected to our own monitoring system?

Yes. The Smartag Zond probe is designed, among other uses, for monitoring systems with an I2C interface.

Can Smartag be immersed in liquid?

A modification with a built-in sensor can be immersed only in a special protective PVC bag, and only in liquids that are not aggressive to the bag material. For liquids, a probe in a sealed stainless steel sleeve is more practical.

Need Smartag temperature indicators? Tell us your task and quantity — we will recommend a modification and delivery lead time.

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