XJP-42A/B is panel type four-digit display meter measuring speed. It's with single-chip microcomputer, small size, light, clear and easy to stall. Signal input end is photoelectricity coupling with strong anti-interference ability. When matched with LJ or 3SG series proximate switch, it can measure speed without direct contact as long as there is metal outthrust on the shaft. It can contact-measure speed when matched with SZHG-01 HALL sensor. XJP-42A is general type meter applicable to low-speed occasions, unit is r/min. XJP-42B is special type meter, it has T=k/n computing which XJP-42A doesn't have. K is required by customer, unit is min/r. Applicable to low-speed occasions, output wire can be 50m long. It can work constantly to measure speed on field.
Main technical parameters Range: 6~9999r/min (0.1Hz~166.6Hz) Input signal: "0"≤ 1mA, "1"≥ 4mA Samping time: 1s≤ T≤ 1s, +1 period Accuracy: 0.02% Sampling: Automatic-connection Working condition: 0~40centigrade; Relative humidity ≤ 85%; No corrosive gas Power supply: AC 220V, 50Hz