Model 3231 USB

Model 3231 USB Specifications

Print Specs

Oxygen Saturation Display Range: 0% to 100% SpO2
Pulse Rate Display Range: 18 to 321 beats per minute (BPM)
Declared Accuracy*: The table below shows Arms values measured using the Model 3231 in a clinical study.

Range Specified Oxygen Saturation (Arms) Finger Oxygen Saturation (Arms) Thumb Oxygen Saturation (Arms) Low Perfusion Oxygen Saturation (Arms)
70 – 100% ±2 ± 1.31 ± 1.56 ±2
70 – 80% ±2 ± 1.65 ± 1.91 ±2
80 – 90% ±2 ± 1.05 ± 1.21 ±2
90 – 100% ±2 ± 1.18 ± 1.49 ±2


This graph shows plots of
the error (SpO2 – SaO2) by
SaO2 using the 3231 with a
linear regression fit and
upper 95% and lower 95%
limits of agreement. Each
sample data point is
identified by subject from a
clinical study in non-motion
conditions.

Pulse Rate Declared Accuracy Range (Arms)*: 20 to 250 BPM ±3 digits
Low Perfusion Pulse Rate Declared Accuracy Range (Arms)*: 40 to 240 BPM ±3 digits
Measurement Wavelengths and Output Power**:
Red. 660 nanometers @ 0.8 mW max. average
Infrared. 910 nanometers @ 1.2 mW max. average

Temperature:
Operating. -5 °C to 40 °C / 23 °F to 104 °F
Storage/Transportation. -40 °C to 70 °C / -40 °F to 158 °F
Device temperature will not exceed 41 °C as measured during a controlled
environment test.

Humidity:
Operating. 10% to 95% non-condensing
Storage/Transportation. 10% to 95% non-condensing

Altitude:
Operating. Up to 5,000 meters / 16,404 feet
Hyperbaric Pressure. Up to 4 atmospheres

Weight: < 72 g / 2.5 oz., including cable and connector

Classifications per IEC 60601-1 / CAN/CSA-C22.2 No. 601.1/ UL 60601-1:
Degree of Protection: Type BF-Applied Part
Enclosure Degree of Ingress Protection: IP32
Mode of Operation: Continuous

* ±1 Arms represents approximately 68% of measurements.
** This information is especially useful for clinicians performing photodynamic therapy.

This product complies with ISO 10993-1, Biological evaluation of medical devices – Part 1: Evaluation and testing.
This device is not made with natural rubber latex.
This product complies with RoHS.
This product complies with REACH.

Model 3231 USB Troubleshooting

Frequently Asked Questions

Nonin
Locations

Nonin Medical Inc
(Global Headquarters)

Address
13700 1st Ave N,
Plymouth, MN 55441

Email
info@nonin.com

Toll Free
1.800.356.8874

Phone
+1.763.553.9968

Nonin Medical B.V.
(Europe)

Address
Doctor Paul Janssenweg 150
5026 RH Tilburg
The Netherlands

Email
infointl@nonin.com

Toll Free
+31 (0)13-79 99 040

Phone
+31 (0)13-79 99 042

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