1, Pressure transmitter to determine which water pressure

First of all, it is necessary to select a transmitter with a water pressure index value about 1.5 times larger than the large value.The key is that in many systems, especially in water level determination and extrusion solutions, there are valleys and constant arcs of left and right fluctuations, such as these instant valleys that can destroy the level sensor.Constant high water pressure values or slightly higher than the transmitter calibration values will reduce the controller's life, which will also reduce the precision.A buffer can therefore be used to reduce the hydraulic burr, but that will reduce the controller's response time.Therefore, the reliability between the category of water pressure and precision should be considered when selecting the transmitter.

2. What hydraulic substances

Viscous liquid, sand slurry will seal the hydraulic jacks, petroleum ether must irritate organic matter will destroy the material in the transmitter with this material immediately contact.This element will determine whether to choose the immediate barrier film and the material that immediately touches the material.

3, how much precision transmitter must be

Decision precision includes discrete systems, hysteresis, non-relative standard deviation, temperature, zero point reference scale, temperature hazards.But the key is the discrete system, hysteresis, non-relative standard deviation, the higher the precision, the higher the price.

4. Temperature category of transmitter

Generally a temperature transducer calibration will be 2 period truly, list one segment is no problem operating temperature, another one is the temperature compensation category, no problem category refers to the operating temperature transducer in the working attitude is not damaged when the temperature of the category, when more than temperature compensation category will not on its use performance parameters.

The temperature compensation category is a key category smaller than the operating temperature category.Working the transmitter in this range will obviously exceed its required performance parameters.Temperature change harms its output in two aspects: zero drift and full range output.For example, +/ -x %/℃ of full range, +/ -x %/℃ of read value, +/ -x % of full range when exceeding the temperature range, +/ -x % of read value when within the temperature compensation range, if not such a parameter, will lead to systemic risk in the application.Is the transition degree of the transmitter output due to the transition of water pressure or temperature?Temperature hazards are a small and complicated part of knowing how to use a transmitter.

Related products: Differential pressure transmitter, temperature transmitter, Vortex flow meter