Key Features:
Ultra-thin 1.7mm Coil: Fits between the legs of a TO-220 semiconductor.
Peak Current Ratings: Ranges from 30Apk to 6000Apk.
High Sensitivity: Set to provide ±6V peak output (e.g., 20mV/A for ±300A peak).
High Bandwidth: Up to 30MHz for high-frequency current measurement.
Flexible Clip-around Coil: Non-intrusive current monitoring in tight spaces.
1.2kV Peak Voltage Isolation: Ensures safe operation in high-voltage environments.
Accuracy: Typically 0.2% of reading.
80mm Coil Length: Suitable for tight configurations and confined spaces.
CWT ULTRA Mini Current Probe Models:
| Model | Sensitivity (mV/A) | Peak Current (Apk) | Order Code |
| CWTUM/015/B/1/80 | 200 | 30 | CWTUM/015/B/1/80 |
| CWTUM/03/B/1/80 | 100 | 60 | CWTUM/03/B/1/80 |
| CWTUM/06/B/1/80 | 50 | 120 | CWTUM/06/B/1/80 |
| CWTUM/1/B/1/80 | 20 | 300 | CWTUM/1/B/1/80 |
| CWTUM/3/B/1/80 | 10 | 600 | CWTUM/3/B/1/80 |
| CWTUM/6/B/1/80 | 5 | 1200 | CWTUM/6/B/1/80 |
| CWTUM/15/B/1/80 | 2 | 3000 | CWTUM/15/B/1/80 |
| CWTUM/30/B/1/80 | 1 | 6000 | CWTUM/30/B/1/80 |
Technical Specifications:
| Type | Sensitivity (mV/A) | Peak Current (A) | Peak di/dt (kA/µs) | Noise (mV pk-pk) | Droop (%/ms) | LF Bandwidth (Hz) |
| CWT015 | 200 | 30 | 2 | 20 | 80 | 116 |
| CWT03 | 100 | 60 | 4 | 20 | 65 | 67 |
| CWT06 | 50 | 120 | 8 | 15 | 35 | 34 |
| CWT1 | 20 | 300 | 20 | 15 | 9 | 9.2 |
| CWT3 | 10 | 600 | 40 | 10 | 6 | 6.2 |
| CWT6 | 10 | 1200 | 40 | 10 | 6 | 6.2 |
| CWT15 | 2 | 3000 | 70 | 5 | 2 | 2 |
| CWT30 | 1 | 6000 | 70 | 5 | 2 | 2 |
Accuracy and Linearity:
Accuracy: Typically 0.2% with the conductor centered in the loop.
Linearity: ±0.05% of full scale.
Maximum di/dt: 70.0 kA/µs peak, all models are rated up to 1.2kA/µs.
Coil and Cable Specifications:
Coil Circumference: 80mm.
Coil Cross Section: 1.7mm.
Peak Voltage Isolation: 1.2kV.
Flash Testing: Coils are flash tested at 3kVrms for 60 seconds.
Operating Temperature: -40°C to +125°C (coil).
Cable Length: 1m (connecting coil to integrator box).
Power and Mechanical:
Power Supply:
Battery: Four AA 1.5V standard alkaline batteries with a typical life of 70 hours.
DC Input: 12-24V DC via a 2.1mm socket (batteries inoperative when DC supply is present).
Rechargeable Option: NiMH batteries with 30-hour life, rechargeable via DC input.
Integrator Box Dimensions:
Height: 183mm
Width: 93mm
Depth: 32mm
Output Socket: BNC (50-ohm impedance) with 0.5m BNC-BNC coaxial cable supplied.