891系列是由合资企业青岛亨斯特勒自动化仪表有限公司生产的,经过UL安全认证的计时器产品。该产品采用微型同步电机驱动轮系带动计时轮实现计时。最小计时单位0.01小时,计满为99999小时,约11年。功耗小于1VA,该产品动态响应灵敏,通电计时,断电则停,不可复位,数据可以无限期保持。特别适合于重要设备、装置运行状态的监视,可为定期保养和 891 series is a joint venture by Qingdao Hengstler Automation Instrumentation Co., Ltd., UL safety certification timer products. The product uses a miniature synchronous motor driven wheel drive timing chronograph to achieve timing. The smallest unit of time 0.01 hours, to 99999 hours, about 11 years. Power consumption is less than 1VA, the product is sensitive to dynamic response, power timing, the power is stopped, can not be reset, the data can be maintained indefinitely. Particularly suitable for the important equipment, monitoring the operation of the device, for regular maintenance and