Contec 90A three-channel pocket cardiograph

Brochure: https://harm-rdc.xotest.gr/wp-content/uploads/2026/03/Contec_ECG90A.pdf

• • Frequency Response: 0.05Hz ~ 150Hz (-3dB ~ + 0.4dB)

• • CMRR:> 60dB,> 100dB (add filter)

• • Time constant: ≥ 3.2s

• • Patient leakage current: <10μA

• • Calibration voltage: 1mV

• • Sensitivity: 5, 10, 20 mm / mV ± 5%, typical sensitivity: 10mm / mV ± 2%

• • Noise level: ≤15μVp-p

• • Input circuit current: ≤50nA

• • Input resistance: ≥50MΩ

• Sampling accuracy: 12-bit

• • Paper size: 50mm (W) × 20m (L)

• • Sampling frequency: 1000Hz

• • Bias voltage: ± 500mV

• • EMG interference filter: 25Hz / 35Hz (-3dB)

• • Frequency filter: AC 50Hz / 60Hz (-20dB)

• • Paper speed:
    – Auto: 6.25, 12.5, 25, 50mm / s, ± 5%
    – Manual: 6.25, 12.5, 25, 50mm / s, ± 5%

• • Power supply: DC 12V adapter, rechargeable lithium battery 7.4V / 2000mAh

• • Dimension: 207mm (L) × 96mm (W) × 62mm (H)

• • Weight: 0.5 Kg

Main features:

1) It has a frequency filter, a base filter and an EMG filter of ECG signal and higher measurement accuracy.
2) With the automatic analysis and automatic diagnosis functions for common ECG parameters, measurement results and self-diagnosis conclusion are provided for HR, PR interval, P duration, QRS duration, QT interval, Q-Tc, P axis, QRS axis, T Axis, R (V5), S (V1), R (V5) + S (V1), etc.
3) The optional SD storage card stores up to 100 measurements, allowing you to review past patient measurements.
4) Optional ECG-Sync software, connect to PC via USB2.0 interface, real-time data collection in the software for analysis and report printing. Meanwhile, the past recordings are still stored in the electrocardiograph and can be downloaded to the PC.
5) It includes a built-in rechargeable lithium battery that can work continuously for 4 hours, print up to 90 minutes and 150 cardiograms.