Background and Identification

The Novametrix Model 509 is a pulse oximeter manufactured by Novametrix Medical Systems. Pulse oximeters are non-invasive devices used to monitor a patient’s oxygen saturation. Novametrix was a producer of airway pressure monitors, transcutaneous blood gas monitors, pulse oximeters, capnographs, respiratory mechanics monitors, and volumetric carbon dioxide monitors. Novametrix is now owned by Philips Respironics, a medical device conglomerate.

The Novametrix Model 509 pulse oximeter measures the patient’s pulse rate and oxygen saturation of functional hemoglobin. Oxygen saturation monitoring is commonly used in a variety of clinical situations, including anesthesia, intensive care, respiratory therapy, and emergency care. This model can be used for monitoring adults, pediatric, and neonatal patients in all critical monitoring environments.

Inaccurate pulse rate and oxygen saturation values may be caused by significant levels of dysfunctional hemoglobin, carboxyhemoglobin, or methemoglobin, excessive patient movement, electrosurgical interference, and venous pulsations.

The 509 model includes the name “NOVAMETRIX MEDICAL SYSTEMS INC.” printed in capital letters in the bottom center of the monitor’s front panel. This pulse oximeter includes two displays, one to indicate high oxygen saturation alert limits, and one to indicate low oxygen saturation alert limits. An oxygen saturation sensor input connector is placed at the bottom of the monitor’s front face.

Technical Specifications

Oxygen Saturation

  • Range: 0-100%.

* Accuracy: (1 standard deviation) 80-100% ± 2%, 0-79% unspecified.

  • Averaging Time: fixed at 8 seconds.

* Audio: Pitch of pulse tone varies with SpO2 value and high alert limit setting.

  • Continuous numerical display of SpO2 value on the Hewlett Packard Patient Monitor Display.

Pulse Rate

* Range: 30-250 beats/min.

  • Accuracy: (1 standard deviation) ±1% of full scale.
  • Averaging Time: 8 seconds, fixed.
  • Continuous numerical display of pulse rate value on Hewlett Packard Patient Monitor Display.

General Specifications

Alerts

  • SpO2 Alert Limits: Displayed on Model 509 module. Automatic or manually selectable for high and low SpO2.
  • 2 Minute Silence: When key is pressed, alarms are deactivated for two minutes.
  • Audio Off: Press and hold the key for three seconds to deactivate audible alerts.
  • Status Messages: Displayed on the Hewlett Packard Patient Monitor.
  • Alert and Pulse Beep Volume: Operator selectable.

Display

  • Numerics: Green Alpha Numeric LED’s on Model 509 front panel.

* Plethysmogram: Continuously displayed on the Hewlett Packard Patient Monitor.

Physical

  • Operating Environment: 50 °F - 104 °F (10 °C - 40 °C), 0-90% relative humidity (non-condensing).

* Size: Height 5 in. (12.7 cm), width 1.5 in, (3.81 cm), depth 5.25 in. (13.34 cm).

  • Weight: 12 ounces (0.34 kg).

Electrical

  • Power: 100-120 VAC, 60 Hz, 8 VA.

Additional Information

Novametrix Model 509 Service Manual

Manuals from Novametrix Medical Systems, Inc.

Novametrix Model 509 Product Page