Pressure transmitter in winter freeze protection method

Pressure transmitter in the winter need protection? Answer, of course, need, no matter what instrumentation equipment, high temperature and high pressure in low temperature low pressure under some special conditions, such as generally need to pay attention to protect key components damaged. So what kind of things do in winter can protect the pressure transmitter, make its normal operation to achieve the best effect of measurement? Please see the following note: 1, the low winter temperatures, prone to freezing phenomenon, first of all, the pressure transmitter shell or periphery may freeze the screen frozen bad; Second, if the temperature is too low to a certain degree, the pressure fluid may freeze in the mouth, once the ice volume will cause damage, inflation will squeeze the sensor measurement. So how to prevent frostbite? General instrument commonly used antifreezing measures is heating, steam heating or electric heating, in fact, if the conditions are considered in the winter low temperature factors, then the supplementary insulation device should be considered in selection of cases. 1, what is a steam heating pipeline is binding, bubbled into steam or heat insulation effect. Therefore, if the steam thermal insulation pipe, so before the heat preservation, need to check the steam or heat pipe was clear, in the winter to heat preservation, basic it is open 24 hours a day, and the temperature of the steam or heat is set according to the environmental temperature. 2, what is the device heat preservation box is a box body, wrapped in pressure transmitter, mainly thermal element is the heater. Insulation device box side will install a socket, convenient power on. But there need to add a temperature controller, when the casing temperature rise to set the temperature range, the temperature controller to control power off; When the temperature drops to a value, to control the power connect continues to heat up. In general, the electric heating tube heater materials can be divided into copper pipe, carbon steel pipe, stainless steel pipe, generally used stainless steel pipe, some places need explosion-proof heater. 3, the latest model of heat preservation measures: electric heating cable is a cable winding contact instrument housing, when when the power is on, the electric energy can be converted into heat energy, then through contact, heat transfer to the instrument housing, to heat up. Or the heating cables attached to the instrument inside the box, can also. In addition, anti-freezing measures above, if there is human's permission, just need to keep on hold people daily insulation device or the condition of the thermal insulation material, if there is any breakage, leakage, or blocking need timely repair or replacement, lest cause a greater loss. If there is no manpower, material resources, can install sound and light alarm. Some gas detection alarming device, for example, if the insulation failure, equipment damage cause gas leakage or liquid leakage, can detect the overweight and alarm parameters, can also play the role of timely alarm and immediately repair or replacement, credit losses.