PDR4000

Description

PDR4000 The Sanwa PDR4000 is a rugged, handheld digital earth tester designed to accurately measure soil resistance and interference voltage in electrical grounding systems. Housed in a compact, impact‑resistant case, it features manual selection of three resistance ranges (40 Ω, 400 Ω, 4000 Ω) and an AC voltage measurement function up to 400 V, enabling comprehensive site diagnostics. Measurements employ both the 3‑pole potential drop method using two auxiliary electrodes inserted 5–10 m apart and the 2‑pole method for systems with known low‑resistance earth paths. The instrument’s LCD display (max. 4000 counts) provides clear readouts, while onboard features such as data‑hold, relative‑value zero adjustment (to null test‑lead resistance), and a backlight enhance usability in varied environments. Auto power‑off conserves battery life, and a low‑battery indicator alerts users when to replace the six R6P cells. Built to IEC 61010 safety standards (CAT II 400 V/CAT III 300 V) and rated IP30, the PDR4000 withstands indoor field conditions up to 40 °C and 85 % RH. Its lightweight design (163 × 102 × 50 mm; 440 g incl. batteries) and supplied carrying case make it ideal for electricians, maintenance teams, and field technicians requiring dependable earth resistance measurements.