美國PTC 581C最大-最小圖表記錄溫度計（攝氏）

本儀器不具有時鐘驅動器，因此不提供基于時間的記錄。 對于時間 - 溫度測量，詳見型號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 - 最小圖表記錄溫度計給出了圍繞在儀器附近的總空氣溫度變化長時間記錄。 該儀器配有100張圖表。 

壓敏圖表是直徑為3"（7.6厘米），是白色塑料涂層覆的。溫度刻度都印成藍色的。圖表上的不銹鋼觸針軌跡作為雙金屬傳感器響應溫度的變化的線。 

長時間記錄最高和最低溫度

兩個溫度范圍-50°F至250°F或-50°C至110°C

NIST的認證可用

滿量程的±2％的精度

100張最小單元的圖表

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