Clinical Dynamics EST-2
Clinical Dynamics · Model EST-2
EST-2 Electrical Safety Tester The is designed for testing the electrical safety of any electrical device including medical equipment with patient leads. It can be used to verify manufacturer’s specifications, to periodically maintain equipment safety and performance, and to verify the condition of a product following production. The wide power input range allows use of the unit on 110 or 220 volt systems without modification. The power outlet can be replaced by the user to adapt to any available outlet. Universal adapter outlets are available. The EST-2 is lightweight and easy to use. It is portable and perfect for both field and bench top use. Measurements include Line Voltage, Device Current, Leakage Current, and Resistance. Normal and Reverse Polarity, Open Neutral or Open Ground conditions are easily simulated without the need for additional equipment or wiring. Leads leakage measurements may be made in all of the above conditions for 12 patient leads. The desired test function can be selected easily from the front buttons and the measurement value read directly from the large display. [b][i]As of May 1st, 2015, this product has been discontinued. [/i][/b]
Key tips
- ·When no category-specific guidance fits, default to the manufacturer's own service manual and the general troubleshooting method in the Engineer's Guide.
- ·Run an incoming and annual electrical safety test regardless of how niche the device is.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
Out of calibration / accuracy suspect
HighSymptoms: Readings disagree with a reference standard, verification check outside tolerance.
Root cause: Normal drift - the instrument needs its scheduled factory / accredited calibration (at least every 12 months).
Will not power on / battery fault
MediumSymptoms: Dead unit, short battery life, will not charge.
Root cause: Depleted or aged battery, or a power / charger fault.
Test lead / probe / adapter fault
MediumSymptoms: Open or intermittent readings, connection errors, a specific function fails.
Root cause: Worn or broken test leads, mains adapters, patient-lead adapters, or a sensor cable.
A measurement / simulation function fails
MediumSymptoms: One parameter (leakage, insulation, ECG / SpO2 / IBP simulation, defib / pacer energy, ventilator flow / pressure, light / dose) errors or is out of range while others work.
Root cause: An internal source / measurement circuit fault on that channel.
PC / software communication fault
LowSymptoms: The automation / logging software will not connect.
Root cause: USB cable / port or driver.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Test-lead / adapter set
Class Periodic replacementRel. cost $$R&R Easy
Battery
Class Periodic replacementRel. cost $$R&R Easy
Calibration (factory / accredited)
At least every 12 months per the manufacturer.
Class Frequent wear itemRel. cost $$R&R Easy
Communication cable
Class Periodic replacementRel. cost $R&R Easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Test-lead / adapter set | Periodic replacement | $$ | Easy |
| Battery | Periodic replacement | $$ | Easy |
| Calibration (factory / accredited) At least every 12 months per the manufacturer. | Frequent wear item | $$ | Easy |
| Communication cable | Periodic replacement | $ | Easy |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Follow the manufacturer's PM schedule
- ·Perform incoming and annual electrical safety testing per facility biomedical program
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Accuracy suspect / verification fails
- Confirm the calibration is within date.
- Verify against a known reference (a decade box, a reference meter, a second analyzer).
- Check the test leads / adapters for damage and reseat them.
- If a single function is out, note it for the calibration lab.
- Send the unit for its scheduled calibration if it is due or fails verification.
Symptom: A function fails or will not power on
- Fit fresh batteries / confirm the charger.
- Swap in a known-good lead / adapter set.
- Test the failing function into a known load / source.
- Update the firmware if available.
- Return the unit for a persistent internal fault.
Technical Specs
- Analyzer/Simulator Type
- Electrical Safety
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Varies by device - check the unit's own manual for facility placement guidance
Documents & Manuals
Related calculators
From BioLab, for work done with this kind of equipment.
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