Analog Clamp Ammeter BLOW 51-050 — 5 A range, analog needle, side-opening clamp

Analog clamp ammeter BLOW 51-050 is a portable instrument that measures current up to 5 A and displays readings on an analog needle scale. The device features a side-opening clamp that allows quick placement around single conductors without disconnecting wiring. Its simple mechanical display and compact housing make it suitable for fast in-circuit checks, basic diagnostics and routine maintenance tasks where a clear, immediate AC or DC current indication is required.

Advantages

The side-opening clamp design enables easy access to conductors in tight spaces and speeds up repetitive measurements. The analog needle display gives a continuously updating visual indication of current changes, which is useful for observing transient behavior and trends. The lightweight and compact construction supports handheld use and easy transport between job sites. As a basic measuring tool, it requires no complex setup and provides intuitive readings for electricians and technicians.

Suitable for

• Quick in-circuit AC and DC current checks on single conductors
• Routine electrical maintenance and troubleshooting
• Field service inspections where a compact, portable meter is needed
• Basic diagnostics in workshops and small installations

Key specifications

• Measurement range: up to 5 A
• Display type: analog needle (mechanical pointer)
• Clamp type: side-opening clamp for single conductors
• Measurement types: AC and DC current
• Form factor: handheld, compact housing

How to use

Position the meter so the side-opening clamp can enclose a single conductor, then close the clamp around the conductor to begin measurement. Read the current value from the analog needle against the scale; observe needle movement to detect changes or transients. For DC measurements ensure correct orientation as indicated on the meter, and for AC measurements use the appropriate scale or setting if multiple scales are present. Avoid clamping around multi-core cables or bundles when measuring a single conductor, as this will produce incorrect readings.

Usage recommendations

Verify the meter’s scale and limits before measuring to avoid overrange. Use the clamp on a single conductor only and keep the instrument clean and dry. When working on live circuits, follow applicable safety procedures and use appropriate personal protective equipment.