CRESSTO压力表TMS系列简介

压力开关是一个组件，它将输入时的当前压力或压力差与预设水平进行比较，如果输入压力低于或高于此水平，则输出返回信息。与机械开关相比，这种电子开关具有更高的精度和可靠性以及更好的长期稳定性。通过电源执行器正确连接，此开关可作为布尔反馈调节器运行。

该仪器设计用于广泛应用于一系列非常小的压力下的测量和调节，特别是在空调，通风，燃烧过程控制，设备设计等方面。许多应用都提供医疗技术和实验室测量。该传感器设计用于测量压差，这一事实还包括测量相对压力的要求。然而，没有确定高的共同压力测量值，例如压力分布系统中的孔板量规的测量值。可以制造压力范围高于100kPa的开关，但仅作为量具。被测介质可以是非腐蚀性气体。在制造商应咨询使用在高于2.5 kPa的压力下允许的非腐蚀性液体。

整个换能器，即压力传感器，电源，补偿和放大电路以及用于提高抗噪性的滤波器放置在聚碳酸酯的小塑料盒中，该塑料盒可以安装在面板或DIN条带上。压力供应由直径5毫米的镀镍黄铜进口实现，适用于小软管，可能是较高压力的快速接头。此外，介质与硅，硅橡胶和塑料物质聚醚酰亚胺接触。

通过带有电缆出口PG7的DIN 43650-C型密封固定微型连接器实现与测量电路的电连接，该电缆出口PG7可以使用直径最大的电缆。 6.5毫米。

这种类型的仪器通过压电原理上的硅膜来测量压力。因此，该换能器具有良好的过载耐久性，抗振动并且可以在任意位置工作。对于一些应用来说，利用一个换能器测量正压和负压是有利的。电子电路通过表面安装技术实现。

输出实现为具有开路集电极的NPN晶体管。这种类型的输出允许简单地实现逻辑电平，用于直接输入到稳压器或连接继电器以用于功率驱动器。在壳体的右侧是LED，其指示晶体管开关接通状态。隐含地将开关设置为晶体管开关 - 随着压力增加超过预设水平。输出信号可以通过分流跳线来抵消。固定滞后cca 1.5％来自标称范围是内置的，以防止在通过切换级别时发生振荡。通过多匝微调电位器实现开关电平调节，可通过右侧的孔，LED旁边进行调节。为了保持高IP保护，这个孔被M3螺钉覆盖，这必须在调整拆卸期间。开关电平调整可以直接在制造商处订购，可以通过实验或外部压力表分别通过带有测量内部电压的外部直流电压表进行调整，并根据公式重新计算，该公式位于本文件的背面。配有LCD的压力开关可通过按下内部按钮显示调节的水平。

开关可以由12-36V范围内的DC电压供电。在此范围内的电源电压的变化对测量精度没有任何实际影响。在盖子下面，放置了短路跳线，用于选择阻尼时间常数。

Pressure switch is a component, which compares current pressure or pressure difference on input with preset level and output returns information if input pressure is below or above this level. In comparison with mechanical switches this electronic one has higher accuracy and reliability and better long term stability. With power actuator proper connection may this switch operate as a boolean feedback regulator.

This instrument is designed for a wide application in a branch of measurement and regulation in a range of very small pressures, especially in air-conditioning, ventilation, combustion process control, appliance design, etc. Many applications are offered in a medical technology and in the laboratory measurements. This transducer is designed for measurement of the differential pressure and this fact also includes a requirement for measurement of the relative pressures. However, it is not determined for a high common pressure measurement, such as measurement on the orifice gauges in the pressure distribution systems. It is possible to manufacture switches with pressure range higher then 100kPa, but only as a gage. The medium being measured may be a non-aggressive gas. Use of the non-aggressive liquid, which is permitted in the pressures higher than 2.5 kPa, should be consulted with manufacturer.

The whole transducer, i.e. a pressure sensor, supply, compensation and amplifying circuits as well as a filter for increase of the noise immunity are placed in a small plastic box from polycarbonate, which may be installed on a panel or DIN strip. The pressure supplies are realized by the nickel-plated brass inlets with a diameter 5 mm, which are suitable for use of a small hose, possibly a quick coupling for higher pressures. In addition, the medium comes into contact with silicon, silicone rubber and a plastic substance polyetherimide.

Electric connection into the measuring circuit is realized by a sealing arrested miniature connector type DIN 43650 - C with a cable outlet PG7, which enables to use a cable with a diameter max. 6.5 mm.

This type of instrument measures the pressure by means of a silicon diaphragm on a piezoelectric principle. Therefore this transducer attains good overload endurance, is resistant against vibrations and may work in an arbitrary position. It is an advantage for some applications to measure both the positive and negative pressure with one transducer. Electronic circuitry is realized by a surface mount technology.

Output is realized as NPN transistor with open collector. This type of output allows simply realize logic levels for direct input to regulator or connect relay for power actuator driving. On the right side of the case is LED, which indicates transistor switch-ON state. Implicitly the switch is set to transistor switch-ON with increasing pressure over preset level. Output signal can be negated by shunting jumper. Fixed hysteresis cca 1,5% from nominal range is built-in to prevent oscillations during pass over switching level. Switching level adjustment is realized by multi-turn trim-pot, which is accessible through the hole in right side, beside LED. To keep high IP protection this hole is covered by M3 screw, which must be during adjustment dismount. Switching level adjustment can be ordered directly at the manufacturer, can be adjusted experimentally or with external pressure meter, respectively by external DC voltmeter with measuring internal voltage and recalculating according formula, which is placed on the rear side of this document. Pressure switch fitted with LCD allow displaying adjusted level by press the internal button.

The switches may be supplied by a DC voltage in a range 12–36 V. Change of the supply voltage within this range has not any practical impact on the measurement accuracy. Under the cover, there are placed short-circuiting jumpers for selection of the damping time constant.

CRESSTO压力表TMS系列技术参数

CRESSTO压力表TMS系列选型参考

CRESSTO压力表TMS系列

爱泽工业(IZE INDUSTRIES)特价经销、常用备件CRESSTO压力表系列列表：

CRESSTO压力表TMVS218N4L

CRESSTO压力表TMVS228N4L

CRESSTO压力表TMVS238N4L

CRESSTO压力表TMVS248N4L

CRESSTO压力表TMVS268N4L

CRESSTO压力表TMVS318N4L

CRESSTO压力表TMVS328N4L

CRESSTO压力表TMVS338N4L

CRESSTO压力表TMVS348N4L

CRESSTO压力表TMVS368N4L

CRESSTO压力表TMVS418N4L

CRESSTO压力表TMVS428N4L

CRESSTO压力表TMVS438N4L

CRESSTO压力表TMVS448N4L

CRESSTO压力表TMVS468N4L

CRESSTO压力表TMVS518N4L

CRESSTO压力表TMVS528N4L

CRESSTO压力表TMVS538N4L

CRESSTO压力表TMVS548N4L

CRESSTO压力表TMVS568N4L

CRESSTO压力表TMAS218N4L

CRESSTO压力表TMAS228N4L

CRESSTO压力表TMAS238N4L

CRESSTO压力表TMAS248N4L

CRESSTO压力表TMAS268N4L

CRESSTO压力表TMAS318N4L

CRESSTO压力表TMAS328N4L

CRESSTO压力表TMAS338N4L

CRESSTO压力表TMAS348N4L

CRESSTO压力表TMAS368N4L

CRESSTO压力表TMAS418N4L

CRESSTO压力表TMAS428N4L

CRESSTO压力表TMAS438N4L

CRESSTO压力表TMAS448N4L

CRESSTO压力表TMAS468N4L

CRESSTO压力表TMAS518N4L

CRESSTO压力表TMAS528N4L

CRESSTO压力表TMAS538N4L

CRESSTO压力表TMAS548N4L

CRESSTO压力表TMAS568N4L

CRESSTO压力表DMVS218N4L

CRESSTO压力表DMVS228N4L

CRESSTO压力表DMVS238N4L

CRESSTO压力表DMVS248N4L

CRESSTO压力表DMVS268N4L

CRESSTO压力表DMVS318N4L

CRESSTO压力表DMVS328N4L

CRESSTO压力表DMVS338N4L

CRESSTO压力表DMVS348N4L

CRESSTO压力表DMVS368N4L

CRESSTO压力表DMVS418N4L

CRESSTO压力表DMVS428N4L

CRESSTO压力表DMVS438N4L

CRESSTO压力表DMVS448N4L

CRESSTO压力表DMVS468N4L

CRESSTO压力表DMVS518N4L

CRESSTO压力表DMVS528N4L

CRESSTO压力表DMVS538N4L

CRESSTO压力表DMVS548N4L

CRESSTO压力表DMVS568N4L

CRESSTO压力表DMAS218N4L

CRESSTO压力表DMAS228N4L

CRESSTO压力表DMAS238N4L

CRESSTO压力表DMAS248N4L

CRESSTO压力表DMAS268N4L

CRESSTO压力表DMAS318N4L

CRESSTO压力表DMAS328N4L

CRESSTO压力表DMAS338N4L

CRESSTO压力表DMAS348N4L

CRESSTO压力表DMAS368N4L

CRESSTO压力表DMAS418N4L

CRESSTO压力表DMAS428N4L

CRESSTO压力表DMAS438N4L

CRESSTO压力表DMAS448N4L

CRESSTO压力表DMAS468N4L

CRESSTO压力表DMAS518N4L

CRESSTO压力表DMAS528N4L

CRESSTO压力表DMAS538N4L

CRESSTO压力表DMAS548N4L

CRESSTO压力表DMAS568N4L

爱泽工业成立于2010年，定位于向先进制造工业提供高端制造技术和设备。代理经营世界先进的电气自动化、机械与传动、流体控制、仪器仪表、工具等产品。作为电气，液压以及气动解决方案的合作伙伴，我们利用我们的全球协作团队，为客户提供先进解决方案，市场知识以及相关增值服务来帮助优化客户的工作效率，提高可靠性和安全性，致力于成为工业产品和解决方案的优质渠道。

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CRESSTO压力表TMS系列简介及技术参数

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