重庆川仪横河EJA440A高压力智能变送器用于测量气体、液体和蒸汽的压力，然后将其转变成4-20mADC的电流信号输 出。EJA430A也可以通过BRAIN手操器或CENTUM CS/μXL或HART 275手操器相互通讯，通过它们进行 设定和监控等
重庆川仪EJA440A智能高压力变送器部分型号：
EJA440A-DCS5A-92NN,EJA440A-DDS5A-92NN,EJA440A-DCS4A-92DA,
EJA440A-DBS4A-92DA,EJA440A-ECS4A-92DA,EJA440A-EBS4A-92DA,
EJA440A-DCS5A-92DA,EJA440A-ECS5A-92DA,EJA440A-EBS5A-92DA,
EJA440A-DCS4A-92EA,EJA440A-DCS4A-92DC,EJA440A-DCS4A-92EB,
EJA440A-DCS4A-92DB,EJA440A-DCS4A-92DD,EJA440A-DCS4A-22DA,
EJA440A-DCS4A-22DC,EJA440A-DCS4A-99DA,EJA440A-DCS4A-92DA/NF1,
EJA440A-DCS4A-92DA/NS1,EJA440A-ECS4A-92DA/NF1
EJA440A-DBS4A-92DA EJA440A-ECS4A-92DA EJA440A-EBS4A-92DA
EJA440A-DCS5A-92DA EJA440A-ECS5A-92DA EJA440A-EBS5A-92DA
EJA440A-DCS4A-92EA EJA440A-DCS4A-92DC EJA440A-DCS4A-92EB
EJA440A-DCS4A-92DB EJA440A-DCS4A-92DD EJA440A-DCS4A-22DA