9 Technical Specifications
ers2 – 1-Channel ECG Telemetry System 49
201000401000 / Rev 04
9.4 Chest Belt
9.4.1 Summary
Antenna type integrated
Maximum antenna gain 2.14 dBi
Dimensions length: 11.3 cm
width: 5.8 cm
depth: 2.8 cm
Weight 90 g
Enclosure ABS
Operating conditions Temperature: +10 to +35 °C
Rel. humidity: 30 to 75 % (no condensation)
Atmospheric pressure: 700 to 1060 hPa
Transport and storage conditions Temperature: –20 to +65 °C
Rel. humidity: 10 to 95 % (no condensation)
Atmospheric pressure: 500 to 1060 hPa
Description Data
Applied part Type CF, defibrillation-protected
AC Impedance – typical approx. 400 Ohm
DC offset voltage – typical < 1 mV
Defibrillation overload recovery typical approx. 6 mV after 5 s
Bias current tolerance < 110 mV over 8 hours
Combined offset instability and
internal noise
50 mV
Biocompatibility ISO 10993
Chest belt Textile
Snap fastener contacts Nickel-plated brass
Sensor type Dry electrode
Sensor material Conductive polymer
Sensor area 2 x ~1300 mm
2
(two sensor areas per belt)
Operating conditions Temperature: +10 to +35 °C
Rel. humidity: 30 to 75 % (no condensation)
Atmospheric pressure: 700 to 1060 hPa
Transport and storage conditions Temperature: –20 to +65 °C
Rel. humidity: 10 to 95 % (no condensation)
Atmospheric pressure: 500 to 1060 hPa
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