BP (Blood Pressure) Amp

Overview:

The BP Amp is a fully isolated blood pressure amplifier approved for direct cardiac connection. The unit is preset to measure pressure (mmHg) using the supplied MLT0670 Disposable BP Transducer (stopcock) for humans and animals. Supplied with a MLAC05 Transducer Cable and a MLT0670 Disposable BP Transducer (stopcock).

Please Note:The MLT0670 transducer is supplied packaged, however ADInstruments does not guarantee the integrity of packaging nor sterility of the transducer and therefore MUST be gas sterilized prior to use with human subjects.

Hardware:
ADInstruments signal conditioners only function with PowerLab data acquisition units and therefore are not suitable for use with other data acquisition systems.

Features:

• Full electrical isolation from power-line (mains) circuitry to guarantee subject safety
• Measurement of blood pressure directly in mmHg: units conversion is done for you
• Pre-calibrated for the MLT0670 Disposable BP transducer
• Ability to override calibration when using other transducers

Applications:

Invasive arterial, venous and ventricular pressure measurements in human and animal studies.

Specifications:

Input

• Connection type: 6-pin Tronomed brand Spacelabs 0440-01- LX transducer cable with a 4-pin transducer connection cable
• Safety: Approved to IEC601-1 CF (cardiac protection) standard
• Input impedance: >10 kΩ at 400 Hz AC
• Input isolation: Transformer isolation (AC bridge operation)
• Isolation rating: 4000 V AC_rms for 1 minute
• Amplification ranges: 50 to 250 mmHg full scale in 3 steps (combined PowerLab and BP Amp)

• User offset: Arbitrary scale offset (for example, –50 with 100 mmHg range gives –50 to 50 range)
• Frequency response: –3 dB at 50 Hz using PowerLab E series –3 dB at 55 Hz using PowerLab S series
• Sensitivity: Correct for 5 μV/V/mmHg transducer standard (~350 Ω bridge)
• Accuracy: ±2 % (±0.2 mmHg) all points, after zero correction
• Input leakage current: <3 μA_rms at 240V, 50 Hz <2 μA_rms at 120V, 60 Hz
• Zeroing and offset: Automatic software-controlled fast zeroing, controlled by internal 12-bit DAC; resolution = ±0.2 mmHg (with supplied transducer)

Transducers

• Transducer type: Pre-calibrated for use with MLT0670 Disposable
• BP Transducer: no further calibration needed for normal applications
• Excitation: ~5 V_rms AC at 400 Hz ±5%
• Alternative types: Transducers up to 1 kΩ with ~ 5 μV/V/mmHg sensitivity with a 4-pin transducer connection cable require calibration.

Filters

• Low-pass filtering: Fixed 55 Hz (–3 dB) two-pole Bessel filter (limited by PowerLab setting)

Output

• Analog signal: ±2.0 V full scale

Control Port

• I²C port: Provides control and power. Interface communications rate of ~50 Kbits/s.

Physical Configuration

• Dimensions (h × w × d): 50 mm × 76 mm × 260 mm (1.96" × 3.0" × 10.2")
• Weight: 750 g (1 lb 10.5 oz)
• Power requirements: 2.5 W maximum
• Operating temperature range: 0 to 35 °C, 0 to 90% humidity (non-condensing)

ADInstruments reserves the right to alter these specifications at any time.