... the merits of high accuracy, large range of its timing, various timing operating models (6 models) digital display, soft-contact ... petroleum, chemical engineering, metallurgy, etc, operating as time delay, timing display and control of time, realizing itinerating control outputs to ... instant-on function (by order)2 Resolution ratio for timing: 10ms3 Timing accuracy: ±0.3%+50ms4 Range of time delay: ...