TR-52i Optical Datalogger with External Sensor Probe and IR Communication - Tech Instrumentation

TR-52i Optical Datalogger with External Sensor Probe and IR Communication

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Our TR-5i Series data loggers are designed to measure and record temperature, voltage, 4-20mA, or pulse count. The body of the data loggers are water resistant and can be used in an environment of -40 °C to 80 °C. Moreover, battery-powered operation means the loggers can be placed anywhere without the need for AC power.
The data recorded by the loggers can be transfered to PC via separately sold "Communication Port TR-50U2" or "Data Collector TR-57DCi", whereby users can analyze the data and view in graph form.
Furthermore, our Data Collector TR-57DCi enables on-site data collection and viewing of data; no longer it is necessary to manually gather the data loggers.

TR-5i SeriesEN 12830 Comliant
The TR-51i and TR-52i data loggers comply with EN12830, the European Standard regarding Temperature recorders for the transport, storage and distribution of chilled, frozen, deep-frozen/quick-frozen food and ice cream.



TR-51i TR-52i
Measurement Channels Temperature 1ch (Internal) Temperature 1ch (External)
Sensor Thermistor Thermistor
Measurement Units °C, °F °C, °F
Measurement Range -40 to 80 °C -60 to 155 °C
Responsiveness Thermal Time Constant: Approx. 15 min.
Response Time (90%): Approx. 35 min.
Thermal Time Constant:
Approx. 30 sec. (in air)
Approx. 4 sec. (in agitated water)
Response Time (90%):
Approx. 80 sec. (in air)
Approx. 7 sec. (in agitated water)
Accuracy Avg. ±0.5 °C Avg. ±0.3 °C [-20 to 80 °C]
Avg. ±0.5 °C [-40 to -20 °C / 80 to 110 °C]
Avg. ±1.0 °C [-60 to -40 °C/ 110 to 155 °C]
Measurement Resolution 0.1 °C
Logging Capacity 16,000 readings
Recording Interval Select from 15 choices: 1, 2, 5, 10, 15, 20, 30 sec. or 1, 2, 5, 10, 15, 20, 30, 60 min.
Recording Mode Endless (Overwrite oldest data when capacity is full)
or One Time (Stop recording when capacity is full)
LCD Display Items Measurements, Recording Status, Battery Life Warning, etc.
Communication Interfaces Optical Communication (proprietary protocol)
Infrared Communication (IrPHY 1.2 low power)
Power(*1) Lithium Battery (LS14250) x 1
Battery Life(*2) Approx. 4 years (2 years with Infrared Communication Enabled)
Dimensions H 62 mm x W 47 mm x D 19 mm (excluding protrusions and sensor)
Weight Approx. 54 g
(including battery)
Approx. 55 g
(including battery / excluding sensor)
Operating Environment Temperature: -40 to 80 °C
Waterproof Capacity IP67: Immersion proof IP64: Splash proof (rated for use in daily life) (*3)
Accessories - Temperature Sensor (TR-5106)
Lithium Battery (LS14250), Strap, User's Manual (Warranty Included)
Data Collection Devices Communication Port: TR-50U2, TR-50U
Data Collector: TR-57DCi, TR-57U, RTR-57U
(*1) The included lithium battery (LS14250) is not sold in stores. Please purchase the optional battery set (TR-11P2) for replacement.
(*2) Battery life depends upon the measuring environment, recording interval, and quality of the battery being used. When infrared communication function is enabled, battery life may be further shortened if the unit is used under the inverter type fluorescent lighting.
(*3) This is the waterproof capacity of the data logger with the sensor connected.


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210 reviews

Shipment arrived on time and as ordered.

La Crosse Technologies V10-TH

The La Crosse V10-TH Wireless Weather Station (Model No. C84343) is absolutely wonderful. The setup was easy with the Quick Setup Guide provided with the unit. The packaging contains additional support information with the website and phone number if there are questions. I especially liked the daily high low readings and the color on the unit! Tech Instrumentation provided great communication as to the availability of the product and shipping details. If fact, it arrived one day prior to the estimated delivery date. I would absolutely recommend this product and Tech Instrumentation for anyone looking for an indoor/outdoor weather station!


I needed a replacement as my original sensor no longer worked. This one works fine.

Excellent Customer Service!

I can't way enough about the customer service at Tech Instrumentation. I was looking for a hard to find specialty part, which the manufacturer told me would need to be custom made. After calling and speaking with a representative at Tech Instrumentation, the part was located and order was filled, right over the phone. Delivery was prompt, and instrument is working great. Highly recommended company for lab supplies!

Worked great

Put batteries in and worked great