à¤Ã×èͧÇÑ´¤ÇÒÁàÃçÇÃͺ TM-4100 Tachometer Descriptions: Large LCD 6 digits with backlit. Measuring by the output of red visible-spectrum light. Measurement distance: 40~500mm. Memory of 200 data. Application: TM-4100 Tacho Meter can be used for various types of equipment such as conveyors, cooling equipment, dryers, elevators, windmills, rotary feeders and grinders. It is available for contact (with 4100K tool kit) and non-contact applications. The non-contact can measure from up to 500mm. Specifications: Auto-range Average Max/Min. Auto Power Saver Hold. Buzzer (on /off). Display 6 digits backlit LCD Range switching Automatic Detection distance Non-contact, 40mm to 500mm (1.58" to 19.7") Measurement method Output the red visible-spectrum light containing the signal to the tape or plate and receiving the signal from the reflective light. Measuring indicator The LCD displays "RING" with a buzzer sound ( or off). Resolution Over 10, 000 count, AVG "ON" :+/-2 dgt.; AVG "OFF" :+/-20 dgt. Sampling rate 0.5 to 10 times/sec Operating Temp./Humidity 0 ~ 40º C; 25% to 75 % RH. Storage Temp./ Humidity -10 ~ 60º C; 0% to 80% RH. Memory capacity 200 data sets Power Supply 9V battery x1 Maximum rated power 0.5VA Battery life About 30 hours (buzzer off) Dimensions Approx. 186mm x 76mm x 36mm (L x W x H) Weight Approx.200g Accessories Battery x1, Carrying case x1, Reflective tape x1 sheet, MINI USB 4P(MALE) to USB A ¡V Mini (4P) cable x1 Optional tool kit for contact measurement : TM-4100K