美国PTC 581C最大-最小图表记录温度计（摄氏）

本仪器不具有时钟驱动器，因此不提供基于时间的记录。 对于时间 - 温度测量，详见型号615，618，或620。 

This instrument does not have a clock drive and therefore does not provide a time based recording. For time-temperature measurement, see Model 615, 618, or 620.

在PTC®581型最大 - 最小图表记录温度计给出了围绕在仪器附近的总空气温度变化长时间记录。 该仪器配有100张图表。 

压敏图表是直径为3"（7.6厘米），是白色塑料涂层覆的。温度刻度都印成蓝色的。图表上的不锈钢触针轨迹作为双金属传感器响应温度的变化的线。 

长时间记录最高和最低温度

两个温度范围-50°F至250°F或-50°C至110°C

NIST的认证可用

满量程的±2％的精度

100张最小单元的图表

The PTC® Model 581 Max-Min Chart Recording Thermometer gives a permanent record of the total air temperature change in the area surrounding the instrument. The instrument comes complete with an initial supply of 100 charts.

The pressure-sensitive charts are 3" (7.6 cm) in diameter and are plastic coated in white. Temperature graduations are printed in blue. The stainless steel stylus traces a line on the chart as the bimetallic sensor reacts to temperature changes. 

Permanently Records Maximum and Minimum Temperature

Two Temperature Ranges -50°F to 250°F or -50°C to 110°C

NIST Certification Available

Accuracy of ± 2% of Full Scale

100 Charts included with Unit