Multichannel Data Loggers & Heat Flow Data Loggers

	MEMORY HiLOGGER LR8450 Portable data logger expandable to 120 ch with plug-in input units • Compatible with plug-in modules only • 5 to 120 ch of isolated input • DC V, temperature, resistance, distortion, etc. • Fastest recording interval: 1 ms
	MEMORY HiLOGGER LR8450-01 (Wireless LAN model) Portable data logger expandable to 330 ch with plug-in or wireless input units • Compatible with plug-in or wireless modules • 5 to 330 ch of isolated input • DC V, temperature, resistance, distortion, etc. • Fastest recording interval: 1 ms • Supports Wireless LAN
	HEAT FLOW SENSOR   Z2012-01 to Z2017-01 K thermocouple and heat flow sensor in one device ・K thermocouple and heat flow sensor in one device ・Flexible sensor that can measure curved surfaces
	HEAT FLOW SENSOR   Z2012 to Z2019 Standard model heat flow sensor ・Standard model heat flow sensor ・Flexible sensor that can measure curved surfaces
	HEAT FLOW LOGGER   LR8432 Measure the heat flow and volume of heat energy 10 ch isolated, 10 ms recording   • Measure the heat flow and volume of heat energy • 10 ch isolated, 10 ms recording • Heat flow, DC voltage/ Temperature with Thermocouple, etc., • Heat transmission coefficient processing
	WIRELESS LOGGING STATION   LR8410 Wireless logging system 15ch to 105ch isolated input • 15ch to 105ch isolated input wireless logger • DC voltage/temperature with thermocouple or Pt sensor, humidity, resistance • 100ms interval recording in real-time
	MEMORY HiLOGGER   LR8431 10 ch isolated, 10 ms recording Realtime recording to CF card or USB memory • 10 ch isolated, 10 ms recording • DC voltage/ Temperature with Thermocouple/ Cumulative pulses/ Rotation measurement • Realtime recording to CF card or USB memory
	MEMORY HiLOGGER   8423 600-channel Data Logger with 10ms Sampling • 15ch to 600ch isolated input • DC voltage/ Temperature/ Humidity/ Cumulative pulses/ Rotations/ Digital measurement, etc., • 10ms recording to PC in real-time

	WIRELESS FUNGAL LOGGER   LR8520 Record fungal index, growth prediction temperature and humidity • Record fungal index, growth prediction • Record temperature and humidity • Minimum 0.5 sec interval
	WIRELESS HUMIDITY LOGGER   LR8514 Temperature and Humidity Data Logger for Managing Production Plants and Agricultural Sites • 2 ch Temperature/ 2 ch Humidity recording • - 40 °C to 80 °C/ 0% to 100 % RH (with optional sensor) • Minimum 0.5 sec interval • Wireless data download to a tablet or computer
	WIRELESS VOLTAGE/TEMP LOGGER   LR8515 2 ch Voltage (±50 mV to ±50 V) Thermocouple recording • 2 ch Voltage (±50 mV to ±50 V)/ Thermocouple recording • Minimum 0.1 sec interval • Wireless data download to a tablet or computer
	WIRELESS CLAMP LOGGER   LR8513 For AC/DC current recording Fastest 0.5 sec interval • For AC/DC current recording • Fastest 0.5 sec interval • Wireless data download to a tablet or computer
	WIRELESS PULSE LOGGER   LR8512 Perform Pulse Integration of Vehicle Speed or Flow Rate for Equipment such as Air Conditioners • For pulse count • 2ch, pulse, rotation, 1/0 signal • Minimum 0.1 sec interval • Wireless data download to a tablet or computer
	WIRELESS LOGGING STATION   LR8410 Wireless logging system 15ch to 105ch isolated input • 15ch to 105ch isolated input wireless logger • DC voltage/temperature with thermocouple or Pt sensor, humidity, resistance • 100ms interval recording in real-time
	WIRELESS UNIVERSAL UNIT   LR8511 Logging Multi-point Data Has Never Been So Easy with a Wireless Data Logger • 4 terminals push-button type • 15 channels • Voltage, Temperature with thermocouple • Platinum Resistance temperature sensor • Humidity, or Resistance measurement • for the LR8410
	WIRELESS VOLTAGE/TEMP UNIT   LR8510 Logging Multi-point Data Has Never Been So Easy with a Wireless Data Logger • 2 terminals M-3 mm screw type • 15 channels, Voltage, Temperature with thermocouple • for the LR8410

	CLAMP ON POWER LOGGER   PW3365 Save data to the SD card continuously Voltage) Non-metallic contact sensor • 3 circuits (1P2W), single circuit (1P3W, 3P3W, 3P4W) • Save data to the SD card continuously • (Voltage) Non-metallic contact sensor
	CLAMP ON POWER LOGGER   PW3360 Store data on SD cards Harmonic analysis • For commercial line only, 50/60 Hz • Store data on SD cards • Harmonic analysis

This page provides an overview of multichannel data loggers and their applications and describes the types of signals that can be input for measurement as well as necessary instrument functionality.

01. What are multichannel data loggers? (overview)

Applications of data loggers

Data loggers, a type of waveform observation device used to process and record signals digitally, have a maximum sampling speed of 10 samples per second (10 Hz) or 100 samples per second (100 Hz), making them well suited to observing signals associated with slower phenomena compared to Memory HiCorders and oscilloscopes.

Principal applications include observation of temperature, weather, and static strain. They are distinguished by their low cost compared to other observation devices and their ability to accept input of numerous signals, in excess of 100 channels.

Appearance of data loggers

Figures 1-2 and 1-3 depict data loggers. These instruments have one or more terminal blocks for signal input, which they digitize and record either in internal memory or on a CF card or USB flash drive.
In addition to displaying input data in real time in graph or numerical form for operator review, data loggers allow past data to be viewed even as they continue to record input.
A LAN- or USB-connected computer can be used to control multiple loggers and to record or transfer data from the instruments.

Portable, embeddable models can simultaneously record a maximum of 600 channels.  

Data logger input specifications

Data loggers can record the following types of signals (LR8400 series):

•    DC voltage (up to a maximum of 100 V)
Output signals from signal converters and other devices, battery cell voltages, etc.
•    DC current
Instrumentation signal output, for example 4 to 20 mA, which is converted to 1 to 5 V signals for input
•    Thermocouples (types: K, J, E, T, N, R, S, B, W)
•    Platinum resistance temperature detectors (types: Pt100, JPt100)
•    Resistance (up to 200 Ω)
•    Humidity (using a dedicated sensor)
•    Pulse (with support for integration and RPM measurement)
•    Digital signals (recording a value of 0 or 1 each recording interval)

02. Features of Hioki multichannel data loggers

Input isolation and high withstand voltage specifications

When measuring the voltage of each of a number of batteries that are connected in series to form a circuit such as the one shown in Figure 2-1, it is important that each channel be electrically isolated. In the same way, it is not possible to accurately measure signals being input to a data logger if there is any potential difference between them. Hioki data loggers have channels that are isolated by means of semiconductor relays.

In Figure 2-1, Ch. 15 is subject to the total voltage of the series-connected batteries relative to ground. Hioki data loggers are designed to withstand high terminal-to-ground voltages.