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法兰式液位变送器 YS1PF
YS-1HF Flange Liquid Level Transmitter
二、特点
● 精度高，稳定性好。
● 二线制工作方式，4～20mA 信号输出。
● 敏感部件及线路板是全固体结构，坚固抗振。
● 抗干扰能力强，温度稳定性好;
● 防爆壳体结构，可全天候使用。
● 具有最优良的防腐性能，保证最好的防腐性价比。
● 结构轻巧，简单合理，无须支架，无须水平安装，可直接任意位置安装管道上。
一、概述：
该型号为 YS1 的变形产品，其显著特点是采用较大内孔和法兰
连接方式，适用于非密闭场合，尤其是粘稠、或浆状介质或富含颗粒
类介质的测量。采用此种形式可达到不易堵塞，便于清洗的效果，进
一步发挥了陶瓷电容传感器抗腐蚀性能好的技术特点和较经济的优势。
可广泛用于石油、化工、电力、冶金、制药、食品等许多工业领域。
1. General Remark：
This model is derived from YS1, it features big internal hole and
flange connection, suitable for non sealed application, especially for
viscous, slurry media or granule media. This design eliminates the
risk of blocking, and provides easy cleaning, further develops ceramic
capacitance sensor’s function of corrosion-proof and economic
advantage. It finds many utilities in petroleum, chemical, power,
metallurgy, pharmaceutical, food industries.
2 Characteristic
● high accuracy, good stability
● 2 line working mode, 4～20mA signal output
● sensitive component and circuit board are in solid construction, rigid vibration-proof
● excellent interference-proof, good thermal drift;
● explosion-proof enclosure structure, weather-proof
● most outstanding corrosion-proof, ensure best utility reliability
● light construction, simple reasonable, no bracket required, no horizontal mounting required, available
mounting at any position on pipeline.
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MODEL YS1PF
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三、工作原理
图-1 YS1PF系列陶瓷电容压力变送器原理图
Figure - 1 YS-1 Series Ceramic Capacitance Pressure Transmitter Principle Scheme
变送器由传感器与电子元件线路组成，被测介质的压力直接作用于传感器的陶瓷膜片上，
使膜片产生与介质压力成正比的微小位移，正常工作状态下，膜片最大位移不大于 0.
025mm，电子线路检测这一位移量后，即把这一位移量转换成对应于这一压力的标准工业
测量信号（4~20）mA。超压时膜片直接贴到坚固的陶瓷基体上，由于膜片与基体的间隙
只有0.1mm，过载时膜片的最大位移只能是0.1mm，所以从结构上保证了膜片不会产生过
大变形。由于膜片采用高性能的工业陶瓷，因而使传感器具有很强的抗冲击及抗过载能力。
Transmitter is composed of sensor and electronic element circuit, pressure of measured
medium directly applies on sensor s ceramic diaphragm, force diaphragm to displace tinily
in proportion to pressure of medium, under normal working condition, diaphragm displace
no more than 0.025mm, electronic circuit detects this displacement, and convert it into
standard industrial measuring signal i.e. (4～20mA) corresponding to this pressure. When
overpressure, diaphragm directly stick to solid ceramic base body, as there is only 0.1mm
gap between diaphragm and base body, when overpressure, the maximum diaphragm
displacement could be no more than 0.1mm, (at that time, measuring diaphragm sticks to
ceramic bracket, avoid damage) so structurally prevent diaphragm from excessive
deformation. Because diaphragm adopts high functional industrial ceramic, sensor is
significantly shock-proof and overload-proof.
3. Working
Principle
① ceramic base body
② ceramic diaphragm
measured medium sensor electronic circuit output signal
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四、主要技术指标
技术指标
使用对象 液体、气体或浆状介质
测量范围 表压：0～10Kpa～7Mpa;
负压：-100KPa～7MPa
输 出 4～20mADC
电 源 13～30VDC
负载特性 4～20mADC 二线制负载R ≤ 50(V-
13) （见图-2）
温度范围 环境温度： -20～+70℃ ;
存储温度：-20～+80℃
标准介质温度： -20～+80℃（短时可
达 130℃）
外壳防护 优于 IP65
防爆类型 本安型 iaⅡ CT5 应外配安全栅
4. Main Technical Index
Technical Index
Utility Object: Liquid, gas or slurry media
Measuring range: Gauge pressure：0～10Kpa～7Mpa;
Minus pressure：-100KPa～7MPa
Output: 4～20mADC
Power Supply: 13～30VDC
Load characteristic: 4～20mADC 2 line load R≤ 50(V-
13) （see figure -2）
Temperature limit: Ambient temperature： -20～+70℃ ;
storage temperature：-20～+80℃
Standard medium temperature： -20～+80℃（short time
up to 130℃）
Enclosure protection: Better than IP65
Explosion-proof mark: Intrinsically safety type ia Ⅱ CT5
should have extra safety barrier
负载特性（图-2）Load Characteristic（figure-2）
(Transmitters load characteristic diagram)
working area
power supply voltage
load resistance
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MODEL YS1PF
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性能指标
综合精度 标准提供 0.25%，最高精度可达± 0.1%BFSL
稳定性 优于± 0.1%BFSL/年
温度影响 在 -20～+70℃范围内，变化量小于± 0.18% / 10℃
振动影响 在任何方向上振动频率为 20-200Hz 时，变化量小于± 0.02% BFSL
冲击影响 任何方向 100G 冲击11ms后，变化量小于± 0.02% BFSL
负载影响 只要输入变送器的端子电压高于 12V，就无负载影响。
位置影响 无
结构指标
结构材料 膜片：氧化铝陶瓷 外壳：低铜铸铝
接触介质材料：SUS304
“O”型圈密封结构：丁腈橡胶、聚四氟乙烯或氟橡胶
过程连接 法兰连接 Flanged connection
电气连接 可根据需要从任何一个出口引出，建议使用φ 10工业电缆作为引线，以便密封。引出接头可选用
通用电缆接头 PG16 或 M20 × 1.5，不引线一端用端盖封住。
Functional index
General accuracy: Supply standard± 0.25%BFSL/year，maximum accuracy ± 0.1% BFSL/year
stability: Better than ± 0.1% BFSL/year
thermal effect: within-20～+70℃，variation below± 0.18%/10℃
vibration effect: In any direction, vibration frequency 20-200Hz，variation below ± 0.02% BFSL/year
impact effect: In any direction 100G impact after 11ms, variation below ± 0.02% BFSL
load effect: No load effect as long as voltage input to transmitter’s terminal greater than 12V
position effect: none
Structural Index
constructional material: diaphragm：aluminium oxide ceramic
Enclosure material：low copper cast aluminum
wetted material：SUS304
“ O”type ring：buna N , PTFE OR fluoroelastomer
process connection:
electric connection: On request lead from any exit, suggest φ 10 industrial cable as lead, so that it is sealed.
Leadout socket could be general cable socket PG16 or M20× 1.5，use end cap to seal no lead end.
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MODEL YS1PF
五、 结构及安装方式
5. construction and mounting options
图-4是法兰的结构示意图及尺寸表 单位（mm）
Figure-4 is flange construction scheme and dimension chart unit（mm）
1. 直接安装在测量点上（任意角度）。
2. 尽量安装在温度梯度与温度波动小的测压点上，同时避免强振动和冲击。
3. 室外安装时，尽可能放置于保护盒内，避免阳光直射和雨淋，以保持变送器性能稳定和延长使用寿命。
4. 测量蒸汽或其它高温介质时，注意不要使变送器的工作温度超限。必要时请安装散热器或其它冷却装置连接。
5. 安装时应在变送器和介质之间加装压力截止阀，以便检修和防止取压口堵塞而影响测量精度。在压力波动范
围大的场合还应加装阻尼器或压力缓冲装置。
注：不得随意更换或改动可能影响防爆性能的元器件或结构。
1. directly mount on measuring point（any angle）
2. suggest mount on measuring point with lower temperature gradient and temperature fluctuation, meanwhile
avoid vibration and impact.
3. in case of outdoor mounting, preferred mounting in protection case, avoid direct exposure to sunlight and
rainfall, to maintain transmitter s functional stability and longer service life.
4. when measuring steam or other high temperature media, make sure transmitter s working temperature limit
is observed. Fit cooler or other cooling device if necessary.
5. when mounting, shut valve should be used between transmitter and medium, for easy maintenance and to
prevent pressure taking port from blocking that influences measuring accuracy. Damper or pressure buffer
should be used where big pressure fluctuation exists.
Note ：random replacing or altering elements or construction that may impair explosion-proof function is prohibited.
1. transmitter
2. signal cable socket
3. process connection flange
50 165 125 Φ18 4 M16 99 3 20
80 200 160 Φ18 8 M16 132 3 24
100 235 190 Φ22 8 M20 156 3 24
工称通
法兰外径 D
螺栓孔中心
螺栓孔径L 螺栓数量N 螺栓尺寸TH
密封面 密封面 法兰
径 DN 圆直径 K 直径D1 高度F 厚度C
Flange thi-
ckness C
Nominal
through
diameter DN
Flange
outside
diameter D
Bolt
circle K
Bolt
hole size L
Nos.
of bolts N
Bolt Size TH
Sealing
face
diameter D1
Sealing
face
height F
图-3 是法兰液位变送器的结构示意图
figure-3 is flange liquid level transmitter s constructional scheme
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六、系统连接及调试
变送器在测量系统中的连接见图4。建议电源电压Us 选用24V.DC。
二次仪表中采样电阻（负载电阻）RL的阻值选用250Ω。如果Us和RL选用别的数值，那么RL值不能超
过由公式计算得到的数值。
电源通过信号线接到变送器， 变送器顶部两侧面的连接孔用电缆密封或信号线装配，信号电缆通过紧固螺母
锁紧，不使用的连接口必须密封。
A：测量系统接线图
在系统回路中必须采用屏蔽信号电缆，并可靠接地。
图 -4 测量系统示意图（4～20mA）
figure-4 measuring system scheme（4～20mA）
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6. System connection and adjustment
Connection of pressure transmitter in measuring system refers to figure 4. Suggest power supply Us uses
24V.DC
Sampling resistance in secondary instrument （load resistance）R L uses 250Ω。If resistance deviates for
Us and R L , R L value shall not exceed the value from formula R L =
Power supply is connected to transmitter via signal cable, connections holes at both sides of top of transmitter
is sealed with cable or assembled with signal cable, signal cable is fastened by lock nuts, idle connection hole must
be sealed.
A：measuring system wiring scheme
Shielded signal cable must be used in system loop, and must be grounded firmly.
V S -12
0.02
MODEL YS1PF
13-30V direct current
power supply
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B：本安型压力变送器
YS-1-B本安型压力变送器采用本质安全电路，适用于爆炸危险区域，防爆等级ExiaIICT5(防爆合格证编号：
CE042114)，技术性能指标与普通型压力变送器相同。在系统回路中必须采用屏蔽信号电缆，并可靠接地。
变送器出厂前已根据用户需求，量程、精度均已调到最佳状况，一般不需校验。但以下情况需重新校验：
A. 运输途中出现跌落、强烈震颠和碰撞；
B. 存放期超过一年；
C. 长时间运行后，出现大于精度范围内的误差；
D. 使用单位的例行检验；
before delivery transmitter has been set range, accuracy within accuracy range as per customer s request,
normally doesn t need calibration but as a exception if following situations occur：
A. falling down, strong shock and vibration in transit；
B. over 1 year storage；
C. long time operation, error occurs greater than accuracy range;
D. user s routine inspection；
B：intrinsically safety type pressure transmitter
YS-1-B intrinsically safety type pressure transmitter adopts intrinsically safety circuit, suitable for explosive
hazardous zone, explosion-proof class ExiaIICT5(explosion-proof certificate no.：CE042114)，echnical func-
tion index is same as standard pressure transmitter. Shielded signal cable must be used in system loop, and must
be grounded firmly.
图-5 本安型测量系统示意图（4～20mA）
figure-5 intrinsically safety measuring system scheme（4～20mA）
13-30V direct current
power supply
safety zone
hazardous zone
safety barrier
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YS1PF
选型表 HOW TO ORDER
型号代码 特性说明
Code Introduction
基
本
型
号
Basic type
外
径
Diameter
输
出
Signal output
精
度
Accuracy
测
量
范
围
Ranges
仪
表
连
接
Connection
YS1PF = 法兰式液位变送器
Flange Liquid Level Transmitter
420
015
= 24V，4~20mA
= 24V，1~5V
根据客户提供的法兰连接标准
025
050
= 0.25 级 ± 0.25%
= 0.5级 ±0.5%
M120 = 1 MPa
在 10 kPa -7 MPa 之间选项
具体代码请参看量程对照表
MODEL YS1PF
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－ · · ·
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