SCHNEIDER是法国一家跨国企业，成立于1836年，乃世界能源管理优化解决方案供应商之一，主要产品包括断路器、传感器、控制器等等，为各国能源设施、工业、数据中心及网络、楼宇，提供整体解决方案。
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Specifications
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Signal output
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4 … 20 mA
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Enclosure rating
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IP 65
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Voltage across transmitter
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UG max. 36 Vdc
UG min. 15 Vdc
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Maximum load (ohms)
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R = (UM - 9)/0.02A
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Accuracy
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±0.4% of range at ambient temp.
25 °C (77 °F) and UG = 24 Vdc
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Measurement current
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2 mW
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Temperature dependence
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±0.04 °C/°C at ambient temp.
25 °C (77 °F) and UG = 24 Vdc
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Voltage dependence
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0.1 °C (0.18 °F) when UG = 15 … 36 Vdc
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Load dependence
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0.1 °C (0.18 °F) when R = 0 to max. R
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Temperature dependence
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0.04 °C/°C at ambient temp. of 25 °C (77 °F) and U = 24 Vdc
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Ambient temp. (amplifier)
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min. -20 °C (-4 °F)
max. +70 °C (158 °F)
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Operating humidity range
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0…95% (non-condensing)
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Time Constants
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Air velocity 1.5 m/s
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Approx. 72 s
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Air velocity 3.0 m/s
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Approx. 52 se
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Material
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Immersion tube
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Stainless steel
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Connection box
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Polyamid plastic
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Mounting flange
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Black plastic
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Standards
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EMC
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EN 61326-1, EN 61326-2-3
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SCHNEIDER温度变送器STD300产品介绍
STD300 是一款电子温度变送器，可将测量的温度转换为 4 … 20 mA 电流信号。
有两种不同的温度范围可供选择。 该变送器作为一个完整的单元提供，包括安装在外壳中的不锈钢浸入式探头、传感元件和放大器。 该变送器适用于浸入式安装，用于风道中的温度测量。
STD300 is an electronic temperature transmitter that converts the temperature measured into an electric current signal 4 … 20 mA.
Two different temperature ranges are available. The transmitter is delivered as a complete unit, comprising a stainless steel immersion probe, the sensing element and an amplifier, mounted in a housing. The transmitter is intended for immersion installation and is used for temperature measurement in air ducts.
SCHNEIDER温度变送器STD系列其他常用型号：
SCHNEIDER STD100
SCHNEIDER STD200
SCHNEIDER STD300
SCHNEIDER STD500
SCHNEIDER STD660
SCHNEIDER STD670
SCHNEIDER STD150
SCHNEIDER STD550