防爆温度开关S71

防爆温度开关S71

防爆温度开关S71 产品介绍：

防爆温度开关S71分为机械式防爆温度开关和电子式防爆温度开关，机械式防爆温度开关的原理同压力开关，采用热膨胀系数稳定的特殊硅油，感受到温度变化后发生热胀冷缩，产生形变，产生位移，防爆温度开关S71通过栏杆弹簧等机械结构，*终启动*上端的微动开关，使电信号输出。防爆温度开关从结构上又分为本地直插式防爆温度开关和远传毛细防爆温度开关两大类。测温元件不同分为黄铜和不锈钢两种。除了机械式的还有防爆电子式温度开关，给客户不同的应用群体提供了多中选择。

防爆温度开关S71 技术规格：

·设定点满量程可调，通过参考标尺现场设定.
·SPDT（单刀双掷）或DPDT（双刀双掷）.
·接线盒方便现场接线.
· 可选密闭式微动开关.
· 可选金触点.
· 316 不锈钢毛细和温包.
· 量程可达260°C (500°F).
· 隔爆 NEMA 4, 4X, 7, 9
· 隔爆 EEx d IIC - ATEX.
· SIL2认证
· China Rohs认证
技术参数
防护等级
·IP66
导热系统数据
· 所有接液材质为300 系列不锈钢
毛细和温包材质316 不锈钢.
标准电气特性 –参见表 6
· 1 Amp –金触点.
· 5 Amps – 普通型，环境密闭和封装密闭
过程接口
·½” NPT外螺纹 – 滑动螺纹或固定螺纹.
重量
· 2.6 kg – 7.1 kg (5.7lb – 15.6lb).
精度
· 设定点重复性满量程 ± 1% (环境温度
20 °C / 68 °F)
英国delta-controls S71 系列温度开关应用领域
S71 系列可广泛的应用于工业领域:
·石油 & 天然气
·化工
· 石化
· 炼油
· 电力
· OEM（原始设备制造商）
通过选择不同外壳721温度开关可用于:
·大气中有腐蚀性物质存在的应用环境
·有腐蚀性化学物质的应用场合

防爆温度开关S71

Industrial Series
Weatherproof / Ex d
The model S71 Temperature Switch comes with a rigid or semi-rigid thermal system and is suitable for setpoints between -40°C and +260°C with maximum working temperatures up to 270°C
FEATURES & BENEFITS
 Better than 1% set-point repeatability
Users can expect a set-point repeatability performance better than 1% on all configurations with some configurations being significantly better
 Extensive range of approvals
The Industrial Series switches are available with wide range of different approvals including European and North American Hazardous Area approvals
 Safety
All Industrial Series models come with a safety vent to prevent the enclosure becoming pressurized in the event that the sensor is inadvertently damaged by excessive pressure. In addition, all models have been certified for use in safety systems up to and including SIL 2.
 
DOCUMENTATION
Operational instructions
IOM-S70.pdf
NEC 500 Intrinsic Safety
GPN Permit (Belarus)
ATEX Ex d
ATEX Ex ia
SIL 2
NEC 500 Explosionproof
Approvals
Technical datasheet
TDS-S70.pdf
SUPPORT
 
Technical advice
Installation support
Recalibration
Local support
Instrumentation repairs
Spare parts
 
The Industrial Series switches were developed in the mid-1990's to offer customers a robust range of switches suitable for applications where requirements were more standard than those for which the highly configurable Performance Series switches were designed.
Using diaphragm based sensors and a more traditional in-line force balance mechanism to transfer movement from the sensor to the microswitch, these switches are suitable for a wide range of industrial applications. Various international approvals make the Industrial Series suitable for use in both safe and Hazardous Areas in Europe, North America and throughout the world.
With the recent launch of the Sentry Series, these Industrial models are now recommended mainly for aftermarket applications where a like for like replacement is needed.
Epoxy coated aluminium or stainless steel housings approved to IP66 and NEMA 4X
SPDT and DPDT switch contacts with environmentally and hermetically sealed options
Stainless steel wetted parts as standard
Better than 1% set-point repeatability
Temperaturee ranges from -40°C and +260°C
Tmax up to 270°C depending on range

This page introduces Delta-controls model S71 pressure switch, if you want to know more information, please contact our company, thank you!

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