The EMG Series Electromyogram Transmitters

Habitats | Features | Applications
Options | Specifications | Related Products

Lotek's electromyogram (EMG) transmitter represents one of the components of a field-proven system which enables researchers to record physiological data from free-swimming fish. Designed to be mounted either externally or internally, EMG transmitters measure muscle activity using probes inserted into the musculature of the fish. The EMG Series provides you with a powerful quantitative estimate of the energetic costs associated with physical activity. It is the only transmitter that truly indicates mortality.

Applicable
Habitats

Key Features

EMG tags allow you to :

investigate the metabolic costs associated with such activities as tail-beat frequency

calibrate to oxygen consumption through a series of measurements taken during periods of controlled activity

calculate and compare the energetic costs of various activities

transmit temperature data

Detailed list of EMG features and benefits

Explanation of the EMG/temperature system

Applications

Radio telemetry has been used to obtain relative or qualitative estimates of fish activity, for the most part, through the use of mercury switches. The EMG transmitter, in conjunction with the SRX_400 receiver/datalogger and peripherals, offers an incomparable means of quantitatively addressing activity and energy budget issues both in the lab and in the field, without the need for mercury switches.

Applications include:

assessing velocity barriers such as those presented in natural points of difficult passage, or man made barriers including culverts, bridges, dams, etc.

assessing the effect of temperature or chemical plumes

designing bypass structures by examining in-situ energy expenditures of fish in response to flow rate changes and structural design changes in ladders, weirs, etc., and

effectively monitoring and assessing entrainment in-situ through use of the EMG/SRX_400 system on a continuous basis.

Special Options

The following transmitter options are available:

TEMPERATURE SENSOR: (STO-3) Temperature within the transmitter is measured and transmitted as a linear variation of pulse rate (resolution 0.2C).

Specifications

Dimensions (mm)	Weight in Air (g)	Weight in Water (g)	Typical Operational Life (months)
16.2 x 53.0	18.3	8.0	3-4

Transmitter operational life varies based in part, upon environmental conditions to which they are subjected. For this reason, typical values for operational life may be specified, with guaranteed operational life defined as 90% of the typical value. All transmitters are guaranteed to meet stated specifications upon shipment. Any Lotek transmitter found to be defective, with respect to material, workmanship or guaranteed operational life, effective from date of receipt, will be repaired or replaced. Owing to variable beat rate characteristics, operational life of temperature and other sensor transmitters is limited to typical values.

Related Products

Other Lotek radio transmitters:

The MCFT Series of coded radio transmitters

The MBFT Series of pulsed radio transmitters

Sensor transmitters