Image unavailable
Image unavailable
Yokogawa
Yokogawa CL420 Clamp-On Process Meter
Quote on request
No online payment · add lines to RFQ BOM
CL420: clamp-on DC mA; 20/100 mA; ±(0.2%+5 d) on 20 mA. RFQ qty.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
Measuring range
DC current 20 mA range 0.00 to ±21.49 mA; 100 mA range ±21.0 to ±126.0 mA
Accuracy
20 mA: ±(0.2% rdg + 5 dgt); 100 mA: ±(1.0% rdg + 5 dgt) @ 23 °C ±5 °C
Output
Analog DC voltage OUTPUT 10 mV/mA (recorder/logger)
Supply
Four AA alkaline 1.5 V (LR6); ~60 h continuous (backlight/LED off)
Process connection
Clamp-on (non-contact to loop wire); max conductor diameter 6 mm
Wetted parts
N/A (portable clamp meter)
Fits 4–20 mA loop checks without breaking the wire where you need a Yokogawa CL420—clamp-on DC milliamp measurement with 20 mA / 100 mA ranges and ±(0.2% of reading + 5 digits) accuracy on the 20 mA band.
Key advantages
- Ranges — 20 mA / 100 mA DC class
- Accuracy — ±(0.2% rdg + 5 digits) on 20 mA
- Method — Clamp-on mA without breaking the loop
- Use — Process loop troubleshooting
- Form — Portable clamp-on process meter
Typical applications
- 4–20 mA loop verification.
- PLC/DCS analog checks.
- Field instrument commissioning.
Selection guide
- Lead set / case
- Quantity for techs
- Calibration cert need
Common mistakes
- Clamping multiple wires.
- Expecting AC current clamp ranges.
- Jaw not fully closed.
When to RFQ / what to tell us
- Quantity.
- Ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 38043 |
| Brand | Yokogawa |
| Model | CL420 Clamp On Process Meter |
| Product type | Process Clamp Meter |
| Type | Clamp-on DC process meter (Yokogawa CL420) |
| Range | 20 mA / 100 mA DC class |
| Accuracy | ±(0.2% of reading + 5 digits) on 20 mA |
| Feature | Clamp-on mA measurement without breaking loop |
Documents
FAQ
Q: Break the loop? A: No — clamp-on DC mA measurement.
Q: Accuracy on 20 mA? A: ±(0.2% of reading + 5 digits).
Q: What should I send for a quote? A: Quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Measuring range | DC current 20 mA range 0.00 to ±21.49 mA; 100 mA range ±21.0 to ±126.0 mA |
| Accuracy | 20 mA: ±(0.2% rdg + 5 dgt); 100 mA: ±(1.0% rdg + 5 dgt) @ 23 °C ±5 °C |
| Output | Analog DC voltage OUTPUT 10 mV/mA (recorder/logger) |
| Supply | Four AA alkaline 1.5 V (LR6); ~60 h continuous (backlight/LED off) |
| Process connection | Clamp-on (non-contact to loop wire); max conductor diameter 6 mm |
| Wetted parts | N/A (portable clamp meter) |
| Housing | Portable instrument enclosure |
| Protection | Hand-held; see safety ratings EN61010 |
| Ambient temperature | −10 to +50 °C; ≤80% RH non-condensing |
| Display | 4-digit dual LCD numeric; backlight; LED torch |
| Approvals | EN61010-1; EN61010-2-030; EN61010-2-032 |
| Notes | Specs from Yokogawa Bulletin BUCL420-EN (Clamp-on Process Meter CL420) + TMI product page. Measures 4–20 mA without breaking the loop. |
| Response Time | Approx. 1.5 s (2.5 s across range) |
| Dimensions | 61 × 111 × 40 mm; approx. 290 g including batteries |