Socket & See PDL PRO High Resolution Loop Tester
Professional No Trip and High Resolution Earth Loop Testing
The Socket & See PDL PRO High Resolution Loop Tester is a professional Earth Loop Impedance Tester combining no-trip, high-current and high-resolution loop testing in one compact instrument. Designed for electrical installation and inspection work, the PDL PRO provides multiple L-E and L-N loop test options together with voltage, polarity, PFC and PSC measurements.
For RCD-protected circuits, the Socket & See PDL PRO provides a dedicated No Trip L-E loop test for measuring Zs. High-current modes can be used for Ze or Zs measurements on suitable circuits, with high-resolution L-E and L-N testing providing results to 1mΩ resolution.
A large backlit display, protective rubber boot and hands-free operation make this Socket & See Loop Tester particularly practical for everyday professional testing.
Request a competitive quote today for a versatile no-trip and high-resolution earth loop impedance testing.

Socket & See PDL PRO Key Features:
- Comprehensive range of loop testing and electrical measurement functions
- No Trip L-E loop testing
- High-current L-E loop testing
- High-current, high-resolution L-E loop testing
- High-current, high-resolution L-N loop testing
- High-resolution results to 1mΩ
- AC voltage measurement across L-N, L-E and N-E
- PFC and PSC measurements
- Distribution Network Operator (DNO) polarity test pad
- Polarity and voltage-present LED
- Hands-free loop testing
- Large backlit display
- Automatic power-off for battery preservation
- Protective rubber boot
- Protection against accidental phase-to-phase connection
- CAT III 500V / CAT IV 300V measurement category
Why Choose the Socket & See PDL PRO?
One of the key advantages of the Socket & See PDL PRO Earth Loop Impedance Tester is its versatility. The No Trip L-E mode provides a three-wire Zs test for circuits protected by an RCD, while high-current testing provides options for measuring Ze or Zs where appropriate.
The hands-free function can be used with any loop measurement. Once connected, and after the tester has confirmed correct voltage and polarity, the selected loop test can be performed without having to press the TEST button.
The PDL PRO also uses a true impedance technique for accurate PFC measurement and calculates PSC between live conductors. A dedicated polarity touch pad provides an additional check for potentially dangerous polarity reversal, indicated by a flashing red LED and warning tone.
Applications:
- Earth loop impedance testing
- No-trip Zs testing on RCD-protected circuits
- High-current Ze and Zs testing
- High-resolution L-E and L-N loop testing
- PFC and PSC measurements
- Electrical installation testing
- Electrical inspection and maintenance
- Polarity checking
Technical Specifications
| Features | |
| Voltage Test Range | 0–260V |
| No Trip L-E Range | 0.00–499.9Ω |
| High Current L-E Range | 0.000–500.0Ω |
| Power Supply | 4 × AA LR6 batteries |
| Battery Life | 50 hours |
| Measurement Category | CAT III 500V / CAT IV 300V |
| Operating Temperature | 0°C to 40°C |
| Safety Compliance | BS EN 61010-2-030:2010 |
| EMC Compliance | BS EN 61326-2-2:2013 |
| Probes | GS38 compliant |
| Dimensions | 180 × 85 × 50mm |
| Weight | Approx. 450g |
What comes with PDL PRO?
- Socket & See PDL PRO High Resolution Loop Tester
- Mains lead with 3 x 4 mm connectors
- Magnetic hanging strap
- 4 x AA batteries
- Instruction manual
- (TECC10) Carry case
❓ Frequently Asked Questions (FAQ)
Q1: What is the Socket & See PDL PRO used for?
A. The Socket & See PDL PRO is a digital Earth Loop Impedance Tester designed for no-trip, high-current and high-resolution loop testing.
Q2: Can the PDL PRO carry out no-trip loop tests?
A. Yes. The Socket & See PDL PRO No Trip Loop Tester includes a three-wire No Trip L-E mode for measuring Zs where a circuit is protected by an RCD.
Q3: What resolution does the PDL PRO provide?
A. The high-current, high-resolution L-E and L-N tests provide measurements to 1mΩ resolution.
Q4: Does the Socket & See PDL PRO measure PFC and PSC?
A. Yes. Following a loop test, calculated PFC and PSC values can be displayed using the appropriate PFC L-E / PSC L-N selection.
Why Buy from Acutest Direct?
Buy the Socket & See PDL PRO High Resolution Loop Tester from Acutest Direct for professional Socket & See test equipment backed by expert technical advice, product demonstrations and trusted aftercare support.
For electricians looking for a versatile Socket & See Loop Tester capable of no-trip, high-current and high-resolution earth loop impedance testing, the PDL PRO provides a comprehensive solution in one professional instrument.