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DST centi-HRT heart rate and temperature logger

Implantable heart rate sensor for animal research

Overview

Key features

  • Leadless, minimally invasive
  • Size 46mm x 15mm and 19g
  • Long battery life
  • Automatic stress-free measurements
  • ECG derived heart rate, data verification

Description

The heart rate logger DST centi-HRT simultaneously measures long term heart rate and core temperature in the animal. This makes it ideal for studies in which baseline and immunology responses are recorded. The logger is also suitable for toxicological, metabolic, thermoregulation and hibernation studies.

Examples of Application

Suitable for studies in:

  • Laboratory animal science
  • Wildlife animal science
  • Animal welfare
  • Fish physiology

Leadless ECG Derived Heart Rate

The heart rate is derived from a leadless single channel ECG (electrocardiogram) in which the electrodes are part of the housing material, making the logger especially easy to implant. For heart rate the logger takes a burst measurement on any set time interval and calculates the mean heart rate for each recording. Each recorded burst measurement consists of 600 measurements. For validation purposes, each individual burst is graded with a certain QI (quality index) accessible in the accompanying application software.

Suitable for Long-Term Studies

The heart rate logger can store up to 699,000 heart rate and temperature measurements and has a battery life of 19 months (with sampling interval of 10 min at 600 Hz). DST centi-HRT can be easily sterilized and reused as long as the batteries last. Each DST centi-HRT has its own five digit serial number permanently marked on the logger housing as well as placed in the logger's memory and it is provided with all downloaded data. DST centi-HRT is especially useful when a comprehensive data set throughout the research with no disturbance to the animal is needed. Each logger comes with a calibration certificate.

Simple in Use, from Setup to Data Retrieval

The DST centi-HRT is supported by the Mercury software and the Communication Box which serves as an interface between the logger and a PC computer. Communication between the logger and the Communication Box is wireless when logger is placed in the Communication Box.

In the software, the user programs the start time, start date, sampling interval and sampling frequency before the logger is implanted/deployed. Fastest sampling interval is 1 minute but sampling frequency can be varied between 100Hz-800Hz. Optionally, the loggers can be programmed with up to seven different intervals within a measurement sequence. The user defines the number of measurements for each of the interval so it's possible to have more or less frequent measurements during specific periods.

Temperature and heart rate correlation 

Easy Viewing of Data

After recovering the DST, recorded data is uploaded in the software where the results are displayed both in graphic and tabular form. The software also provides the user with some basic statistic information on the data such as minimum and maximum values on defined area, median, average, distribution of values etc. When recorded data has been retrieved, the DST can be re-programmed and reused as long as the batteries last.

A set of Communication Box and Mercury software needs to be purchased with the first order.

For more information about accessories please see our Accessories site.

Examples of Application

Technical Specifications

SensorsTemperature and heart rate
Size (diameter x length)46mm x 15mm
Housing materialAlumina (Ceramic)
Weight (in air/in water)19g
Memory typeFLASH
Memory capacity699,051 measurements per sensor or 2785 ECG buffer measurements
Data resolution12 bits
Temperature resolution0.032°C (0.058°F)
Temperature accuracy+/- 0.2°C (0.36°F)
Temperature range5°C to 45°C (41°F to 113°F)
Data retention25 years
ClockReal time clock
Accuracy +/-1 min/month
Sampling intervalIn minute(s), or hour(s)
Number of different sampling intervals-Single interval throughout measuring period
-Or multiple intervals throughout period
CommunicationsCommunication Box, RS-232C 9 pin serial or USB
Attachment hole0.9 mm (in diameter)
Battery life19 months*
*For a sampling interval of 10 min at fs=600 Hz. Battery life of heart rate loggers is subject to change based on sampling frequency.

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