GE Corometrics 120 Series Fetal Monitor

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Pricing up to 50% below the cost of new,
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Corometrics 120 Series Features

Every Corometrics 120 Series Monitor features clinical excellence that has set the standard in m/f monitoring for more than 30 years. patented smart bp, heartbeat coincidence, spectra alerts, Dinamap non-invasive blood pressure algorithm, and 9-crystal pulse Doppler ultrasound transducers… you can trust the data as an accurate assessment of mom and baby’s progress. Labor can be unpredictable. Be prepared with a monitor that can help you manage the entire process – even in the most difficult cases. The Corometrics 120 monitor interactive training CD provides a step-by-step review of the disassembly and reassembly process. From the introduction of the parts down to the removal of the front bezel power switch, this interactive CD gives a comprehensive approach to servicing the 120 series.

  • Model 126: Dual ultrasound, FECG, and Uterine Activity, Fetal SpO2 (optional), Maternal BP, Maternal SpO2, 3 ea Serial Interface
  • Model 128: Maternal non-invasive blood pressure technology and SpO2, in addition to Model 126 features
  • Model 129: Maternal 3-lead selectable ECG in addition to Model 128 features

Corometrics 120 Series sets new standards for maternal/fetal care

  • Our unique Spectra Alerts™ transforms the powerful 120 Series into a “Smart” monitor, complete with alert functions. This feature analyzes the fetal heart rate (FHR) and uterine activity (UA) patterns, as well as trend characteristics of variability, baseline, decelerations, and signal quality to assist the clinicians in evaluating the fetal strip.
  • Smart BP™, a patented feature that works in conjunction with DINAMAP® non-invasive blood pressure technology, automatically delays a blood pressure measurement while a contraction is in progress thus assuring more clinically significant assessment and documentation of the maternal status.
  • 3-Level-Heart Beat Coincidence (HBC) alerts the care provider with both visual and recorded messages when there is a possibility that you may be recording the same heart rate with two modes of monitoring. The monitor compares up to three heart rates and provides additional information for fetal assessment.
  • Fetal Pulse Oximetry (FSpO2) is an optional parameter that provides a real-time oxygen status of the fetus. In combination with other fetal parameters, FSpO2 helps in the early detection of fetal hypoxia and provides additional information in the presence of non-reassuring fetal heart rate patterns.
  • Integrated Masimo SET or Nellcor Maternal SpO2 make it easy for the clinician to monitor, document or even view the waveform.

Corometrics 120 Series Specifications


  • Height: 6.7”, 17 cm
  • Width: 16.4”, 41.9 cm
  • Depth: 17.3”, 43.9 cm
  • Weight: 24 lbs (10.9 kg) approximate

Ultrasound Mode

  • Technique: pulse Doppler with autocorrelation processing
  • Transducer type: 9-crystal
  • Pulse reception frequency: 4 kHz single ultrasound mode, 2 kHz dual ultrasound mode
  • Pulse duration: 92 µs
  • Transmitter frequency: 1.151 MHz
  • Intensity: <5mW/cm²
  • Heart rate counting range: 50-210 BPM
  • Leakage current: <10 µA at 120-240 VAC, isolated by transducer


  • Technique: peak detecting, beat-to-beat cardiotachometer
  • Heart rate counting range: 30-240 BPM
  • Heart rate resolution: ±1BPM
  • Artifact elimination: switch selectable, ±25 BPM artifact rejection
  • Countable input signal range: 15 µV to 2mV peak-to-peak
  • Offset voltage tolerance (differential): ±300 mVDC maximum
  • Maximum common mode voltage: 20V peak-to-peak
  • Preamplifier bandwidth: 1-100 Hz
  • Common mode rejection: balanced > 120 dB at mains frequency, with patient cable, unbalanced = 5 kO RA or LA: > 110 dB at mains frequency
  • Input equivalent noise: < 10µV peak-to-peak
  • Input impedance: differential > 10 MO, common mode > 20MO
  • Mains frequency rejection: > 40 dB
  • Leakage current: < 60µA at 254 VAC, electrically isolated. Isolation, mains-to-patient: > 4 kVAC
  • Leg plate tester jack: simulated r-wave at 120 ± 1 BPM

Fetal Alarms

  • (for ultrasound or FECG modes) Audio: alternating 1.5 second chimes (773 Hz and 523 Hz)
  • Visual: flashing heart rate numeric
  • Limits: user selectable high and low fetal heart rate
  • Technical: signal quality
  • Tachycardia response time: 5 minutes at 100% limit violation
  • Bradycardia response time: 30 seconds at 100% limit violation
  • Signal quality response time: 100% signal loss – 1.25 minutes, 70% signal loss – 5 minutes, 65% signal loss – 10 minutes

Fetal Pulse Oximeter Mode

  • Technique: spectrophotometry and plethysmography
  • Saturation range: 10-100%
  • Saturation accuracy: reproducibility is one standard deviation = 4.7%. Nominally, 67 of the measurements across the population will be within ± standard deviation
  • Wavelengths: red: 735 µM, nominal; infrared: 890µM, nominal
  • Response time: user-selectable: slow and fast averaging modes
  • Transmitter frequency: 1.151 mHz

Uterine Activity Mode

  • Range: 0-100 mmHg strain gauge, 0-100 relative units tocotransducer
  • Resolution: 1 mmHg stain gauge, 1 relative unit tocotransducer
  • Bandwidth: DC to 0.5 Hz strain gauge and tocotransducer
  • Excitation voltage: strain gauge +4.0 VDC

Maternal BP Mode

  • Technique: oscillometric. Blood pressure range: 20-255 mmHg (2.7 – 34 kPa)
  • Pulse rate range: 40-240 BPM
  • Blood pressure accuracy: ±5 mmHg with a standard deviation no greater than 8 mmHg
  • Pulse rate accuracy: ±2 BPM or ± 2% , whichever is greater
  • Display/record: systolic, diastolic, and mean pressure; pulse rate

Maternal Pulse Oximeter Mode

  • Saturation range: 0-100%
  • Pulse rate range: 30-250 BPM
  • Saturation accuracy: %SpO2 ± 1 SD: 70-100% ±2 digits, 50-69% ± 3 digits. 0-49% unspecified
  • Pulse rate accuracy: ±3BPM


  • Leads: II, III, and I
  • Heart rate counting range: 30-240 BPM
  • Heart rate resolution: ± BPM
  • Heart rate averaging: 1 sec
  • Maximum common mode voltage: 20 Vp-p
  • Preamplifier bandwidth: 0.6 to 40 Hz
  • Common mode rejection: balanced > 80 dB at mains frequency, with patient cable; unbalanced 5 k RA or LA > 50 dB at mains frequency
  • Input impedance: differential > 2.5 MO; common mode > 10 MO
  • Mains frequency rejection: >40 dB
  • Leakage current: < 60 µA at 254 VAC, with cable, electrically isolated
  • Alarms: Audio: alternating 1.5 seconds chimes, Visual: flashing heart rate numeric or message, Limits: user-selectable high and low maternal heart rate, technical: leads off

Power Requirements

  • Line voltage: 100/120/220/230/240 VAC
  • Line frequency: 50/60 Hz
  • Power consumption: 100W/0.4 A maximum



Refurbished GE Corometrics 120 Series Fetal Monitor

Soma Tech Intl offers a Refurbished GE Corometrics 120 Series Fetal Monitor System up to 50% below OEM prices with the same service and warranty as new. The GE Corometrics 120 Series Fetal Monitor is not only technically refurbished but also cosmetically refurbished to make it work and look like new. When the refurbishing process starts the GE Corometrics is carefully inspected and tested by our own in-house biomedical engineers who are highly skilled and certified to work on the GE Corometrics 120 Series Fetal Monitor. If necessary, parts are replaced to make sure that all aspects of the pump are functioning properly. Once everything is in working order, the unit is calibrated back to the original engineering manufacturer’s specifications. This ensures that the unit is working the same way that it originally left the manufacturer. After the GE system is working like new it undergoes a special cosmetic restoration process. The GE Corometrics 120 Series Fetal Monitor is cleaned, minor scratches and dents are repaired, it’s painted, and new decals are replaced if necessary. After this strenuous refurbishing process, the Unit functions and looks like new. Soma Tech Intl is ISO 13485 certified and ensures that the best quality is given to all capital medical equipment that they sell. Before the GE Corometrics 120 Series Fetal Monitor is labeled patient-ready and packed up for shipment, it goes through one last quality control test that makes sure all aspects are again working as they should. If you are looking to buy a refurbished GE Corometrics System contact soma at [email protected] or call us at 1-800-GET-SOMA.

Soma Tech Intl is also actively looking to purchase a GE Corometrics 120 Series Fetal Monitor System. If you or your facility is looking to sell your GE Corometrics 120 Series Fetal Monitor, be sure to contact Soma Tech Intl. Soma has a dedicated and experienced purchasing department that helps you through the entire process. Selling your used or pre-owned GE Corometrics 120 Series Fetal Monitor System to Soma Technology takes out the middle man in the equation. This also ensures that your medical facility gets top dollar for your equipment. Soma Technology is 100% HIPPA compliant and makes sure that your equipment gets to our facility in the same condition that it left yours. Soma Technology also gives the option for trade-in credit on your medical equipment. If you have medical equipment you would like to sell to Soma, send us a message here!


Questions about our Fetal Monitors?

Soma Tech Intl offers a wide range of fetal monitors. If you have any questions about any of our fetal monitors or need a quick quote, call us and one of our knowledgeable sales representatives will help you.

Looking to sell your fetal monitors? Soma ensures your facility gets top dollar for your equipment and also gives the option for trade-in credit.

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