邓小平南巡武昌、深圳、珠海、上海等地，发表了重要讲话。邓小平的南巡谈话激发了全中国创业和改革的热潮。那一代的企业家，拥有丰富的人生阅历是他们的普遍特征。生逢大时代，王定华的经历就有着深刻的时代烙印，几乎可以说经历了各类重大事件、穿越了不同阶层。王定华当过工人、上过大学、念过研究生、教过书，直至1992年“下海”。

Deng Xiaoping made an important speech during his southern tour of Wuchang, Shenzhen, Zhuhai, Shanghai and other places. Deng Xiaoping's speeches on his southern tour sparked an upsurge of entrepreneurship and reform throughout China. Entrepreneurs of that generation have rich life experiences as a common feature. Born in a great era, Wang Dinghua's experience has a profound imprint of the times. It can almost be said that he has experienced various major events and passed through different classes. Wang Dinghua worked as a worker, went to university, studied as a graduate student, and taught until he "entered the sea" in 1992.

（外测液位计发明人王定华教授）

从科学家到企业家，王定华的人生卷轴至此翻转，徐徐拉开序幕。

王定华还在西安某高校任教，一位常年在外边为企业解决技术问题的硕士教师朋友和他聊天，说到有一位石油化工厂的老高工告诉他，测量球罐液位是困扰了石化行业几十年的难题，不知道王定华有没有办法可以不开孔测量出里面的液位。这次对话，像一颗种子一样在王定华的心里牢牢地生根发芽。他决定攻克“液位测量难，维修更难”的难题，创造出中国人自己的外测式液位仪。没想到，这个29年前的决定耗尽了他一生的心血。

Deng Xiaoping made an important speech during his southern tour of Wuchang, Shenzhen, Zhuhai, Shanghai and other places. Deng Xiaoping's speeches on his southern tour sparked an upsurge of entrepreneurship and reform throughout China. Entrepreneurs of that generation have rich life experiences as a common feature. Born in a great era, Wang Dinghua's experience has a profound imprint of the times. It can almost be said that he has experienced various major events and passed through different classes. Wang Dinghua worked as a worker, went to university, studied as a graduate student, and taught until he "entered the sea" in 1992.

当一个人明确了自己的方向和所走的道路 胜任当前的角色便已成定局。

已是大学教授的王定华走出实验室，创办了西安定华电子有限公司。在给公司起名时，王定华的想法简单而坚定，他要将自己的一生和这份事业绑在一起，因此取名定华。

 一个刚刚成立的新公司想要打入市场、奠定行业地位，靠什么？王定华的答案是“过硬的新产品”。说干就干，王定华把科学家骨子里执着刻苦的精神一丝不漏地转移到了企业家的身份里。从此，不管吃饭走路、上厕所或者睡觉，他都在思考这个问题，在外人眼里，王定华“疯了”。而正是他这股“疯劲”，帮他撬开了世界首台外测式液位仪的大门。

Wang Dinghua, already a university professor, stepped out of the laboratory and founded Xi'an Dinghua Electronics Co., Ltd. When naming the company, Wang Dinghua's idea was simple and firm. He wanted to tie his life to this career, so he named it Dinghua.

What does a newly established company rely on to enter the market and establish a position in the industry? Wang Dinghua's answer is "excellent new products". Just do it, Wang Dinghua transferred the spirit of perseverance and hard work in the bones of a scientist to the identity of an entrepreneur. Since then, he has been thinking about this issue no matter whether he is eating, walking, going to the toilet or sleeping. In the eyes of outsiders, Wang Dinghua is "crazy". And it was his "crazy energy" that helped him pry open the door of the world's first external measuring liquid level gauge.

王定华常年有胃病，有一次去医院做超声波检查时，看到了超声波仪器，忽然脑中灵光一闪，超声波能不能穿透钢罐壁呢？这个想法在他脑中逐渐扩大，冲击着他那颗热忱的心脏。当时，全世界都没有人这样测量过。王定华决定当第一个吃螃蟹的人。他向素不相识的超声检查室医生借了医院的超声波诊疗仪。在那个年代，人与人之间的信任可能只是一个眼神的交汇。只凭一张手写的借条，王定华借到了超声波诊疗仪。 如获至宝的王定华回到家后，埋进了厨房，围着液化气罐测量。家人们虽然对他的怪异举动担心，但还是选择尊重与理解，任由他捣腾。一周之后，厨房里发出了一声巨大的欢呼声。王定华成功地测量到了液化气罐的液位信号，由此确认了用超声波测量钢罐里液位的技术路线可行。 当时国内外液位测量产品基本都属于接触式测量，普遍存在精度低，稳定性不高，需要在储罐上开孔安装，存在潜在泄露点，维修更换要停车清罐，费用十分高昂。 新技术研发是一条艰难的路程，挫败、疑惑、欣喜或随之而来的失望等各种情绪不一而足。所幸的是，王定华面对困难时候的态度是坚持和乐观：“这个方向不行，就及时转弯，不太会为了眼前堵死的路坐立不安。困难是一直存在。但跳不过坎却不会有，我总会想着，这边放块板，那边架座桥。” 在那间不足80平的房间里，王定华坚持不懈，不断探索，他带领团队潜心基础理论和前沿技术的研究，攻克一个个技术难关，最终开发出了世界上首台利用声呐测距原理，“微振动分析”技术从容器外测量液位仪表——外测液位计。

（20世纪90年代外测液位仪表研发现场）

为了检验第一代外测液位仪的安全可靠性，王定华开启了漫长的检验之路。当时的他身无分文，只能骑着破旧的自行车，跑遍了西安地区所有的液化气站，那些易燃易爆、剧毒、强腐蚀的，别人都不敢靠近的罐体，他也只身前往，严谨认真地测量。西安的春夏秋冬，在王定华骑着自行车叮当穿梭的风中而过。他用自己的手脚丈量了西安古城的每一寸土地，也一次次验证了他发明的外测液位计的安全和高可靠性。

In order to test the safety and reliability of the first-generation external liquid level gauge, Wang Dinghua started a long road of testing. At that time, he was penniless, so he could only ride a dilapidated bicycle and traveled all over the liquefied gas stations in Xi'an. Those tanks that were flammable, highly toxic, and highly corrosive, and no one else dared to approach them, he Also go alone, rigorous and serious measurement. The spring, summer, autumn and winter in Xi'an pass by in the wind as Wang Dinghua clinks back and forth on his bicycle. He measured every inch of land in the ancient city of Xi'an with his own hands and feet, and verified the safety and high reliability of the external liquid level gauge he invented time and time again.

（陕西陕化化肥股份有限公司（原华山化肥厂）-1998年王董现场留影）

技术问题是解决了，又一难题接踵而至，那就是如何进行推广销售。对于长年伏案在研究室和课堂的王定华来说，销售这一块是空白的。如何改变这如何改变这种传统的单纯的搞科研变成既搞科研又搞转化，这个过程是很艰难的。王定华决定利用一切可以利用的，白天搞研发，晚上学管理。为了学习先进的管理知识，王定华拿出了科研工作者特有的钻研劲头，向其他优秀企业学习，向书本上学习，向日常工作学习，在极短的时间里补足销售、管理方面的知识储备。

    人们对于新的技术和产品，始终是抱持怀疑和谨慎态度的。王定华的销售推广之路异常艰辛和复杂。当时的中石化等公司普遍采用的是国外的液位仪，要进行替代非常困难。但是王定华相信自己的产品是最好的，凭着这份自信与笃定，他一遍遍地敲开业主的大门，一遍遍地宣讲产品，用专业的数据和可靠的服务，一步步地把中国人自己发明的外测液位仪推向了中国，推向了世界。 经过时间的淬炼和沉淀，定华的产品和服务获得了国内主流设计单位和用户的广泛认可。经过二十余年的发展，外测液位产品已广泛应用于国内外炼油、化工、储运、电力、冶金、医药等各行业，拥有包括中石化扬子石化、镇海炼化、青岛炼化、中石油大庆炼化、长庆炼化、哈萨克斯坦阿克纠宾油田、天津大沽化、鲁西化工、东岳化工、中盐集团、中煤集团、国电集团、陕煤集团等众多国内外知名企业在内的上千余家客户。同时，定华高度重视技术创新，逐步发展成为由规则的遵守者转变为规则的制定者，积极参与国家行业标准、规范编制工作，2009年定华电子通过十余年不懈努力，作为当年唯一一家国内仪表参编企业。推动外测液位仪表进入国家行业标准，进一步提升国内及行业的话语权和地位。

每一个闪闪发光的人都曾走过一段折戟沉沙的长夜

注：定华参与（1）参编技术标准：中国化工行业技术标准（标准号HG/T21581-2010）
（2）参编技术标准：国家物资管理行业技术标准——《货运主动安全防控仪器与系统技术要求》（标准号T/CFLP 0003—2017）

路虽远，行则将至；事虽难，做则将成。

定华自成立以来，没有做其他任何一件事，只专注于外测液位仪表这一件事，今后也是如此。这是王定华内心的声音和使命。未来，定华希望中国能够跻身到自动化仪表的国际第一阵营里去。这是王定华的心愿，也是他坚信会实现的未来。 如今，我们依然能在第一代外测液位仪细微的纹路上捕捉到当年王定华创业的风姿和印痕，也能在一代又一代不断迭代延伸的液位仪上感受到定华电子对这份事业的忠诚与热爱。

Since its establishment, Dinghua has not done anything else, but only focused on the external measurement of liquid level instruments, and it will continue to do so in the future. This is Wang Dinghua's inner voice and mission. In the future, Dinghua hopes that China can join the international first camp of automated instruments. This is Wang Dinghua's wish and the future he firmly believes will come true. Today, we can still capture Wang Dinghua’s pioneering demeanor and imprints on the subtle lines of the first-generation external liquid level gauges, and we can also feel Dinghua Electronics’ commitment to this in the generations of liquid level gauges that have been iteratively extended. Loyalty and devotion to the cause.