气动Ⅰ型温度变送器QBW型及电气转换器DQ型,虽已逐步被Ⅱ型替代,但目前仍大量使用着。我厂绝大部分温度变送器就是Ⅰ型的,其中电—气转换器部分,调零是借改变弹簧片位置从而改变调零弹簧拉力来实现的,如图1。由于调整固定弹簧片的螺母甚为不便,在固定的过程中容易改变零位,且引起弹簧片的附加应力,故而在固紧以后的一段时间里又发生零位漂移,因此影响了使用,增加了维护上的烦琐。我们作了一点小的改进,如图2,加工了一个调零 Pneumatic type Ⅰ temperature transmitter QBW type and electrical converter DQ type, although has been gradually replaced by type Ⅱ, but is still widely used. Most of our factory temperature transmitter is type Ⅰ, which electricity - gas converter part, zero by changing the spring position to change the zero tension spring to achieve, as shown in Figure 1. Since adjusting the nut of the fixed spring piece is very inconvenient, it is easy to change the zero point in the fixing process and cause the additional stress of the spring piece, so zero shift occurs again after the fastening for some time, thus affecting the use and increasing To maintain the cumbersome. We made a slight improvement, as shown in Figure 2, processed a zero adjustment