天塞与松娜

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博朗的这款温度计真的很好用,3秒内测定体温,带温度记忆、摄氏度华氏度转换，作为小孩子的父母很适用

说明书可以轻易下载到，但是要用IRT4520这几个关键字搜索。具体指标如下：

Product specifications

Displayed temperature range: 93.2 °F – 108 °F (34 °C – 42.2 °C)

Operating ambient

temperature range: 50 °F – 104 °F (10 °C – 40 °C)

Display resolution: 0.1 °F or °C

Accuracy for patient temperature range

Maximum Laboratory Error

96.8 °F – 102.2 °F (36 °C – 39 °C): ± 0.4 °F (± 0.2 °C)

outside this range: ± 0.5 °F (± 0.3 °C)

Long term storage ranges

Temperature: –4 °F to 122 °F (–20 °C to 50 °C)

Humidity: 95 % non-condensing

Battery life: 2 years / 1000 measurements

以下介绍了，耳内测温的原理，原来耳鼓和大脑控制体温的中枢神经都是同一血液供给，所以耳温测量比腋下、直肠和体表测温都精确。

这个耳温计也是用了红外线的原理进行测量。精度在0.1摄氏度。

Why measure in the ear?

The goal of thermometry is to measure core body temperature

1

which is the

temperature of the vital organs. Ear temperatures accurately reflect core body

temperature

2

, since the eardrum shares blood supply with the temperature

control center in the brain

3

, the hypothalamus. Therefore, changes in body

temperature are reflected sooner in the ear than at other sites.

• Axillary temperatures measure skin temperature and therefore, may not be a

reliable indicator of core body temperature.

• Oral temperatures are influenced by drinking, eating and mouth breathing.

• Rectal temperatures often lag behind changes in core body temperature and

there is a risk of cross-contamination.