光电液位开关说明书

WFX-40G型光电编码型水位传感器1、工作原理WFX-40G型光电编码型水位传感器与WFX-40V型浮子式水位传感器的不同点在于它采用了GB系列光电开关旋转编码器。

其编码器由金属码盘、光电开关、IC芯片、主轴、轴承、精密传动齿轮系、输出线缆、金属壳体等组成。

它是通过码盘旋转，由光电开关读取编码数据的绝对值型非接触式编码器，它具有内置（或外接式）RS485数字通信接口或4-20mA电流环输出模块（选装），可直接用于通信组网和自控系统。

2、GB型光电开关编码器结构特点•精选进口高质量光电开关制造；•以金属码盘取代易破碎的玻璃码盘，抗冲击性好；•零件精密模具成型、产品一致性好；•金属防腐蚀外壳，防护性好；•标准化的安装尺寸及多样化的耦合、连接方式给使用带来方便。

3、GB型光电开关编码器性能特点•集编码、数据采集、通信传输于一体，编码范围可达（8～16）bit。

•单转分辨力可达1/512～1/32768；多转分辨力可达(1/32～1/512)×64转。

•光电非接触型检测编码器的寿命长，可达10万小时。

•抗强电磁干扰，无零位和温度漂移，可靠性高。

•极好的温度性能，在-25℃—85℃能可靠地工作。

•在旋转、停转过程中均可读出编码数据，即使停电以后，再次送电，也能准确地读出编码电信号。

4、光电编码型水位传感器主要技术参数4.1 基本参数a 测量范围：30m；b 水位变率：<400厘米/分；c 分辨力：±1mm；d 水位轮启动力矩：60克•厘米（0.0059N.m）；e 测量精度：(0.03-0.3)%×F.S。

3.2 机械参数a 水位轮周长：根据分辨力选配；b 测量缆：Φ1mm不锈钢缆；c 浮子直径：10、15cm可选；d 轴负荷：轴向 9.8N；径向 29.4N。

3.3 电参数a 变位正逻辑：15位；b 电源电压：12/24VDC；c 消耗电流（无负荷时）：50mA；d 触点容量：0.1A/24VDC；e 最高响应频率：20KHz。

sor液位开关中文说明书基本原理上升的液面将浮球或弹簧提升式沉筒浮起，带动磁力短管上升至磁场区，吸引并触发电路或气路开关（发出液位到达信号）。

液面下降时，次序相反，电路或气路开关被释开（发出液位下降信号）。

磁力滑块（通过密封套筒）将永久磁铁和开关组件与过程液面隔离，避免磁铁腐蚀和磁力碎屑堆积。

磁力运动传输消除了由机械装置弯曲运动传输带来的疲劳，损坏及过早失效等问题。

磁力运动传输避免了因探杆型传感器引起的表面涂层问题。

在没有工厂允许的情况下，不要改变开关的原件和结构。

沉筒式结构SOR液位开关使用说明书液面下降时各次序相反，磁力短管下落至磁场外，复位弹簧将外部磁铁拽离密封套管，微动开关复位。

浮球式结构浮球与一根机械连杆固定在一起，液面上升至浮球，浮力使连杆上升，磁力短管升入密封套筒中，磁力短管的向上运动是在外部永久磁铁产生的磁场内。

磁力把外部磁铁吸向磁力短管，牢固地吸附在密封套管上，此时，微动开关被触发。

液面下降时各次序相反。

磁力短管下落至磁场外，复位弹簧将外部磁铁拽离密封套筒，微动开关复位。

沉筒悬挂在弹簧平衡联动杆上，液面上升时，沉筒的有效重量因受浮力而减小，弹簧回缩拉起连杆，使磁力短管在密封套筒中上升。

磁力短管的向上运动是在外部永久磁铁产生的磁场内，磁力把外部磁铁吸向磁力短管，牢固地吸附在密封套筒上，此时，微动开关被触发。

引压口联接外浮筒接管应当平直且不受干扰，控制头与外浮筒垂直中心线在3℃内。

注意：顶装式控制头与容器法兰或短管安装成与容器的垂直或水平中心线不超过3℃。

（即：外浮筒式与顶装式均应垂直安装）接管长度应控制在最小，以使开关整体更稳定。

如有需要，应采用接管悬挂或支承装置。

控制机构在液体中动作，接管中很可能堆积沉淀物，应采用“T”形或“+”形管接头，允许定期清洗接管。

排污阀及吹扫阀可用于清洁外浮筒和接管。

正常运行中，所有接管上阀门应完全打开，因为限流可能导致误动作。

警告：介质温度超过232℃时，不推荐在外浮筒上使用保温材料。

TI00375F/00/EN/13.1371210347Technical InformationLiquipoint T FTW31, FTW32ConductivePoint level switch for multiple point detection in conductiveliquidsApplicationsThe Liquipoint T is used for point level measurement in conductive liquids (from 10 S/cm).Depending on the number of measuring points (up to 5 rods or ropes), measuring tasks such as overfillprotection, dry running protection, two-point control of pumps or multiple point detection can be implemented.Your benefits•Detect up to five point levels with one probe •Two-point control and additional MAX and MIN detection•Option between rod or rope version for optimum adaptation to the application •Flexible instrumentation:–with built-in electronic insert, either transistor (PNP) or relay output–for connection to a separate transmitter power supply unit •No adjustment required;standard setting for the most common conductive liquids•No moving parts in the tank:–long service life–reliable operation with no wear or blockages •WHG approval•Easy adaptation to different conductivitiesLiquipoint T FTW31, FTW322Endress+HauserTable of contentsFunction and system design. . . . . . . . . . . . . . . . . . . . .3Measuring principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Measuring system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Measured variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Measuring range (application) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Input signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Electronic insert FEW52 (DC-PNP) . . . . . . . . . . . . . . . . . . . . . . . 5Electronic insert FEW54 (relay) . . . . . . . . . . . . . . . . . . . . . . . . . . 6Electronic insert FEW58 (NAMUR) . . . . . . . . . . . . . . . . . . . . . . . 8Cable monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Power supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Compact instrument version with FEW52 . . . . . . . . . . . . . . . . . . 9Compact instrument version with FEW54 . . . . . . . . . . . . . . . . . 10Compact instrument version with FEW58 . . . . . . . . . . . . . . . . . 11Separate instrumentation for probes with two rods or ropes with cable monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Separate instrumentation for probes with three rods or ropes with cable monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Separate instrumentation for probes with five rods or ropes with cable monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Cable entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Cable specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Performance characteristics. . . . . . . . . . . . . . . . . . . .13Reference operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 13Measuring error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Non-repeatability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Switch-on delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Influence of ambient temperature . . . . . . . . . . . . . . . . . . . . . . . . 13Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13Mounting location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Orientation of probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Example applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15Ambient temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Climate class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Degree of protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Shock resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Vibration resistance (at min. rod length) . . . . . . . . . . . . . . . . . . . 15Electromagnetic compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Limiting medium pressure range . . . . . . . . . . . . . . . . . . . . . . . . 15Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Mechanical construction . . . . . . . . . . . . . . . . . . . . . .16Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Fitted electrodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Human interface . . . . . . . . . . . . . . . . . . . . . . . . . . . .18Operating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Display elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Certificates and approvals . . . . . . . . . . . . . . . . . . . . .19CE mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Overfill protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Other standards and guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . 19Ex-approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Type of protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Ordering information. . . . . . . . . . . . . . . . . . . . . . . . .19Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19Liquipoint T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20Operating Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Liquipoint T FTW31, FTW32Function and system designMeasuring principle An alternating voltage exists between the probe rods. As soon as a conductive liquid creates a connectionbetween the ground probe rod and, for example, the MAX probe rod, a measurable current flows and theLiquipoint T switches.With point level detection, the device switches back as soon as the liquid clears the MIN probe.With two-point control, the device does not switch back until the MAX and MIN probe is cleared.Using alternating voltage prevents corrosion of the probe rods and electrolytic destruction of the product.The material used for the tank walls is not relevant for measurement because the system is designed as a closed,potential-free circuit between the probe rods and the electronics.There is absolutely no danger if the probe rods are touched during operation.Measuring system Probes without an integrated electronic insert (separate instrument version) forone- or two-point detectionThe measuring system consists of:• FTW31, FTW32 with two/three rods or ropes• One or two Nivotester FTW325• Control units, switches or signal transmitters, e.g. process control systems PLC, relays, etc.Switch points, depending on the tank materialEndress+Hauser3Liquipoint T FTW31, FTW324Endress+HauserProbes without integrated electronic insert for multiple point detection The measuring system consists of:• FTW31, FTW32 with five rods or ropes • Two or three Nivotester FTW325• Control units, switches or signal transmitters, e.g. process control systems PLC, relays, etc.Switch points, depending on the tank materialProbes with integrated electronic insert (compact instrument version)The measuring system consists of:• FTW31 with rods or FTW32 with ropes and an electronic insert• Control units, switches or signal transmitters, e.g. process control systems PLC, relays, etc.Independent of the tank material!Note!The compact instrument version with three rods or ropes is always operated in s mode.Liquipoint T FTW31, FTW32Endress+Hauser 5InputMeasured variableResistance change between two conductors caused by the presence or absence of a conductive liquid.Measuring range (application)The measuring range is dependent on the mounting location of the probes.Rod probes can have a max. length of 4 m (13 ft), and rope probes can have a max. length of 15 m (49 ft). Input signalProbes covered => a measurable current is flowing between the probes.Probes uncovered => there is no measurable current flowing between the probes.OutputElectronic insert FEW52 (DC-PNP)Output signalThree-wire direct current versionPreferred in conjunction with programmable logic controllers (PLC). Positive signal at the switch output of the electronics (PNP).The output is blocked after the point level is reached.*1 = Load current (connected); *2 Residual current (disconnected); *3 LED not lit; *4 LED lit See also "Output signal" ä5.If the probe is covered and the red LED flashes continuously, the sensitivity setting is too high. To ensure a safe switch status even if the conductivity of the medium varies slightly, reduce the sensitivity setting. Fail-safe modeSelecting the correct fail-safe mode ensures that the output always runs in quiescent current fail-safe.•MAX fail-safe mode (MAX): The output voltage is 0 V if the switch point is exceeded (probe covered), a fault occurs or the power supply fails.•MIN fail-safe mode (MIN): The output voltage is 0 V if the switch point is undershot (probe uncovered), a fault occurs or the power supply fails.Switching delayA switching delay of 2.0 s can be activated or deactivated via a DIL switch.If the switching delay is set to 0 s, the device switches after approx. 0.3 s.Liquipoint T FTW31, FTW326Endress+HauserSensitivityThe device operates in one of four sensitivity levels (100 Ω, 1 k Ω, 10 k Ω or 100 k Ω). The sensitivity level is set using two DIL switches (SENS). Setting on delivery: 100 k Ω (maximum sensitivity).Signal on alarmIn the event of a power failure or a damaged probe: < 100 μA Load•Load is switched via a transistor (PNP).•Cycled overload and short-circuit protection, continuous ≤200 mA (short-circuit proof) •Residual voltage at transistor at I max : <2.9 VElectronic insert FEW54 (relay)Output signalAC/DC connection with relay output Both relay contacts switch simultaneously.*1 = Relay energized; *2 Relay de-energized; *3 LED not lit; *4 LED lit See also "Power supply" →ä9.If the probe is covered and the red LED flashes continuously, the sensitivity setting is too high. To ensure a safe switch status even if the conductivity of the medium varies slightly, reduce the sensitivity level.Liquipoint T FTW31, FTW32Fail-safe modeSelecting the correct fail-safe mode ensures that the relay always runs in quiescent current fail-safe.•MAX safety (MAX): The relay de-energizes when the switch point is exceeded.(probe covered), a fault occurs or the power supply fails.•MIN safety (MIN): The relay de-energizes when the switch point is undershot.(probe uncovered), a fault occurs or the power supply fails.SensitivityThe device operates in one of four sensitivity levels (100 Ω, 1 kΩ, 10 kΩ or 100 kΩ).The sensitivity level is set using 2 DIL switches (SENS).Setting on delivery: 100 kΩ (maximum sensitivity)Switching delayA switching delay of 2.0 s can be activated or deactivated via a DIL switch.If the switching delay is set to 0 s, the device switches after approx. 0.3 s.Signal on alarmOutput signal in the event of a power failure or a damaged probe: relay de-energized.LoadLoads are switched via 2 potential-free change-over contacts.I~ max. 4 A, U~ max. 253 V;P~ max. 1000 VA, cos ϕ = 1, P~ max. 700 VA, cos ϕ > 0.7;I– max. 4 A to 30 V, I– max. 0.2 A to 150 V.When connecting a functional extra-low voltage circuit with double insulation in accordance withIEC 1010: the sum of the relay output and power supply voltages is max. 300 V.Galvanic isolationAll input channels, output channels and relay contacts are galvanically isolated from each other.Endress+Hauser7Liquipoint T FTW31, FTW328Endress+HauserElectronic insert FEW58 (NAMUR)Output signalFor connecting to isolating amplifiers acc. to NAMUR (IEC 60947-5-6) e.g. Nivotester FTL325N from Endress+Hauser.Output signal jump from high to low current on point level (H-L edge).Fail-safe modeSelecting the correct fail-safe mode ensures that the relay always runs in quiescent current fail-safe.•MAX safety (MAX): The output signal is <1.0 mA when the switch point is exceeded (probe covered), a fault occurs or the power supply fails.•MIN safety (MIN): The output signal is <1.0 mA when the switch point is undershot (probe uncovered), a fault occurs or the power supply fails.SensitivityThe device operates in one of four sensitivity levels (100 Ω, 1 k Ω, 10 k Ω or 100 k Ω).The sensitivity level is set using two DIL switches (SENS). Setting on delivery: 100 k Ω (maximum sensitivity)Switching delayA switching delay of 2.0 s can be activated or deactivated via a DIL switch.If the switching delay is set to 0 s, the device switches after approx. 0.3 s.LoadRefer to the "Technical Data" of the connected isolating amplifier acc. to NAMUR (IEC 60947-5-6)Cable monitoringFor probes without an electronic insert, an additional printed circuit board is installed in the housing to enable cable monitoring. It is always switched or connected between rod/rope 1 and 2.!Note!When using switching units (transmitters) that do not support cable monitoring, these must be removed.L00-FTL5xxxx-07-05-xx-xx-002= lit = flashes = unlitLiquipoint T FTW31, FTW32Endress+Hauser 9Power supplyCompact instrument version with FEW52Transistor circuit for loadThe load connected to terminal 3 is switched by a transistor, contactless and therefore without bouncing. In normal switch status, terminal 3 has a positive signal.The transistor is blocked in the event of a level alarm or a power failure.Protection against voltage peaksWhen connecting a device with high inductance, always connect a voltage limiter.Connecting the FEW52 electronic insert F: Fine-wire fuse 500 mA, semi-time lag M: Ground connection to protective earthSupply voltage (FEW52)•Supply voltage: U= 10.8 V to 45 V •Load connection: open collector; PNP •Switching voltage: max. 45 V•Connected load, continuous: max. 200 mA •Protected against reverse polarityPower consumption P < 1.1 WCurrent consumption I < 25 mA (without load)Liquipoint T FTW31, FTW3210Endress+HauserCompact instrument version with FEW54Relay contact circuit for loadThe connected load is switched via potential-free relay contacts (change-over contact).In the event of a level alarm or a power failure, the relay contacts break the connections between terminals 3 and 4 and terminals 6 and 7. The relays always switch simultaneously.Protection against voltage peaks and short-circuitsWhen connecting a device with high inductance, fit a spark barrier to protect the relay contact. A fine-wire fuse (load-dependent) can protect the relay contact in the event of a short-circuit.L00-FTW3xxxx-04-05-xx-en-002Connecting the FEW54 electronic insert F1: Fine-wire fuse 500 mA, semi-time lagF2: Fine-wire fuse to protect the relay contact, load-dependent M: Ground connection to protective earth (PE)Supply voltage (FEW54)•Supply voltage: U % 20 V to 55 V DC or U & 20 V to 253 V AC, 50/60 Hz •Peak inrush current: max. 2 A, max. 400 μs •Output: two potential-free change-over contacts•Contact load capacity: U~ max. 253 V, I~ max. 4 A, U % 30 V/4 A; 150 V/ 0.2 APower consumption P < 2.0 WCurrent consumption I <60 mALiquipoint T FTW31, FTW32Endress+Hauser 11Compact instrument version with FEW58To be used with a separate switching unit acc. to IEC 60947-5-6 (NAMUR) e.g. Nivotester FTL325N from Endress+Hauser; Output signal jump from high to low current on point level (H-L edge). Signal transmission on a two-wire line:H-L-edge 2.2 to 6.5 mA / 0.4 to 1.0 mAWhen using a multiplex the cycle time must be set to a minimum of 2 s.Connecting the FEW58 electronic insertSupply voltage (FEW58)Refer to the "Technical Data" of the connected isolating amplifier acc. to IEC 60947-5-6 (NAMUR) e.g. Nivotester FTL325N from Endress+Hauser.Signal on alarmOutput signal with damaged sensor: < 1.0 mASeparate instrumentation for probes with two rods or ropes with cable monitoring*1Printed circuit board for cable monitoring (only required for probes with WHG certification.)The power supply and evaluation are provided by switching units, e.g. Nivotester FTW325Liquipoint T FTW31, FTW3212Endress+HauserSeparate instrumentation for probes with three rods or ropes with cable monitoring*1Printed circuit board for cable monitoring (only required for probes with WHG certification.)The power supply and evaluation are provided by a switching unit, e.g. Nivotester FTW325Separate instrumentation for probes with five rods or ropes with cable monitoring*1Printed circuit board for cable monitoring (only required for probes with WHG certification.)The power supply and evaluation are provided by a switching unit, e.g. Nivotester FTW325Liquipoint T FTW31, FTW32Endress+Hauser 13Cable entry M 20x1.5 and NPT 1/2 "•Quantity in F24 housing: 1 (separate instrument version)•Quantity in F16 housing: 2 (compact instrument version)•Conductor cross-section (including wire end sleeve): 2.5 mm² (14 AWG)Cable specifications Use a commercially available cable (25 Ω per wire).Performance characteristics!Note!When electronic insert is installed!Reference operating condi-tions•Ambient temperature: 23 °C (73 °F)•Medium temperature: 23 °C (73 °F)•Medium viscosity: medium must release the probe again (drain off). •Medium pressure p e : 0 bar (0 psi)•Probe installation: vertically from aboveMeasuring error±10 % at 100 Ω - 100 k Ω±5 % at 1 k Ω - 10 k ΩNon-repeatability±5 % at 100 Ω - 100 k Ω±1 % at 1 k Ω - 10 k ΩHysteresis – 10% for the MAX probe, in reference to the switch point. ∆s function disabled.Switch-on delay< 3 s Influence of ambient tempera-ture< 0.05 %/KInstallationMounting locationTanksThe rod and rope probes are mounted predominantly in tanks. Piping (partially filled)Two-rod probes can be used in piping as, for example, dry running protection for pumps.Liquipoint T FTW31, FTW32 Orientation of probes Point level detectionExample applications Point level detection: Two-point control (∆s)Two-point control (∆s) e.g. pump control14Endress+HauserLiquipoint T FTW31, FTW32Endress+Hauser 15Point level detection: MAX and MIN detectionPoint level detection (MAX),MAX and MIN detection for compact instrument version only possible with ∆s.EnvironmentAmbient temperature rangeNon-hazardous area•–40 to 70 °C (–40 to 158 °F)•–40 to 60 °C (–40 to 140 °F) for FEW58 NAMURStorage temperature –40 to 80 °C (–40 to 176 °F)Climate class Tropicalized as per DIN EEC 68, part 2-38Degree of protection IP66Shock resistance Practical testVibration resistance (at min. rod length)DIN 60068-2-64 / IEC 68-2-64: 20 to 2000 Hz, 1 (m/s 2)2/HzElectromagnetic compatibility•Interference Emission to EN 61326, Electrical Equipment Class B Interference Immunity to EN 61326, Annex A (Industrial)•Use for separate-instrumented probes a screened cable between the probe and the switching unit.For installation instructions for screened cables and general instructions for EMC inspection conditions for E+H devices, see also TI00241F.ProcessConductivity≥10 μSLimiting medium pressure range–1 to 10 bar (–1 psi)Liquipoint T FTW31, FTW3216Endress+HauserEnvironmentPermissible ambient temperature T 1 at the housing as a function of the measuring material temperature T 2 in the vessel:!Note!For separately instrumented devices (without FEW5x) there are no restrictions in the indicated temperature range.Mechanical construction!Note!All dimensions in mm (in)!Liquipoint T FTW31, FTW32Endress+Hauser 17WeightsMaterial Wetted •Seal between probe rod/probe rope and process connection: EPDM •Spacer: PP•Flat seal for process connection: elastomer fiber, (asbestos-free)•Process connections: –G 1 ½: PPS –NPT 1 ½: PPSProbe rods•Rod: 316L (1.4404) or carbon fiber •Insulation: PP Probe ropes•Rope: 316Ti (1.4571)•Insulation: FEP•Weight: 316L (1.4435)Not wetted•Plastic housing F24 (separate instrument version)–Housing: PPS –Cover: PBT•Polyester housing F16: PBT-FR with PBT-FR cover or with PA12 transparent cover,–Cover seal: EPDM –Adapter: PBT-FR–Nameplate, glued: polyester foil (PET)–Pressure compensation filter: PBT-GF20•Ground terminal on housing (outside): 304 (1.4301)•Cable gland: polyamide (PA)Fitted electrodesRod probesCompact instrument version: 2 or 3 rods; Separate instrument version: 2, 3 or 5 rods •Diameter without insulation: 4 mm (0.16 in)•Maximum rod length: 4000 mm (157 in)•Minimum rod length: 100 mm (3.94 in)•Thickness of insulation: 0.5 mm (0.02 in)•Length of non-insulated area (tip of rod): 20 mm (0.79 in)•Extraction forces (parallel probe rod): 1000 N (224.8 lbf)Rope probesCompact instrument version: 2 or 3 rods; Separate instrument version: 2, 3 or 5 rods •Diameter without insulation: 1 mm (0.04 in)•Maximum rope length: 15000 mm (591 in)•Minimum rope length: 250 mm (9.84 in)•Thickness of insulation: 0.75 mm (0.03 in)•Weight length: 100 mm ( 3.94 in) not insulated •Weight diameter: 10 mm (0.39 in)•Extraction forces (parallel probe rod): 500 N (112.4 lbf)Separate instrument version2, 3 or 5 probesRod 1 m (3.3 ft) length 415 g, 530 g, 760 g (14.64 oz, 18.69 oz, 26.81 oz)Rope 1 m (3.3 ft) length 390 g, 470 g, 640 g (13.76 oz, 16.58 oz, 22.57 oz)Compact instrument version2 or3 probesRod 1 m (3.3 ft) length 600 g, 720 g (21.16 oz, 25.40 oz)Rope 1 m (3.3 ft) length710 g, 800 g (25.04 oz, 28.22 oz)Liquipoint T FTW31, FTW32Human interfaceOperating elements FEW52, FEW54, FEW58One DIL switch for MIN or MAX safetyOne DIL switch for 0 s or 2 s switching delayTwo DIL switches for setting the sensitivity level 100 Ω, 1 kΩ, 10 kΩ or 100 kΩDisplay elements Separate instrument versionThe display elements are dependent on the connected switching unit.Compact instrument versionFEW52One red light emitting diode: fault message, switch statusOne green light emitting diode: operationL00-FTW3xxxx-07-05-xx-xx-001FEW54One red light emitting diode: fault message, switch statusOne green light emitting diode: operationL00-FTW3xxxx-07-05-xx-xx-002FEW58One yellow light emitting diode: fault message, switch statusOne green light emitting diode: operationL00-FTW3xxxx-07-05-xx-xx-003 18Endress+HauserLiquipoint T FTW31, FTW32Endress+Hauser 19Certificates and approvalsCE markThe Liquipoint T meets the legal requirements of the EC directives. Endress+Hauser confirms that the device has been successfully tested by applying the CE mark.Overfill protection •WHG, leak test (leakage)Other standards and guide-lines•Low voltage equipment directive (73/ 23/ EEC) •DIN EN 61010 part 1, 2001Safety regulations for electrical equipment for measurement, control and laboratory use Part 1: General requirements •EN 61326Electrical equipment for measurement, control and laboratory use EMC requirementsEx-approvalsFor further information, please contact your local Endress+Hauser Sales Center. All data relevant to explosion protection can be found in separate Ex documentation (see: Documentation ä20) . Type of protection•[EEx ia] IIC (FEW58)•[EEx na/C(L)] IIC (FEW52, FEW54)Ordering information!Note!Further details on product configuration and product features can be found in the Online Configurator on the product pages. See: .AccessoriesLiquipoint TLock nut G 1 1/2"•Hexagon: AF 60•Material: PC-FR•Part number: 52014146 Electronic insert FEW52•Output PNP 10.8 to 45 V DC •Part number: 52017271 Electronic insert FEW54•Output relay 20 to 253 V AC, 20 to 55 V DC •Part number: 52017272 Electronic insert FEW58•Output NAMUR (IEC 60947-5-6)•Part number: 52017273Documentation!Note!This documentation can be found on the product pages at "".Operating Instructions Liquipoint T FTW31, FTW32KA204F/00Certificates WHG•Liquipoint T FTW31, FTW32ZE043F/00ATEX II 3G EEx nA/C(L) IIC T6•Liquipoint T FTW31, FTW32XA226F/00ATEX II 2G EEx ia IIC T6•Liquipoint T FTW31, FTW32XA230F/00Instruments InternationalE ndress+HauserInstruments International A GKaegenstrasse 24153 ReinachSwitzerlandTel.+41 61 7158100F ax+41 61 7152500***************.comTI00375F/00/EN/13.1371210347FM 9.071210347。

外贴式液位开关隔爆型安装使用说明书（201405A）陕西声科电子中国西安高新技术产业开发区©本说明书的版权和最终解释权归声科电子有限公司所用。

目录1.使用说明 (1)2.仪表保修及服务范围 (1)3.仪表技术性能 (2)4.开箱检验及注意事项 (2)4.1 开箱检验 (2)4.2 注意事项 (3)5.仪表各部件 (3)6.仪表安装 (4)6.1 超声波探头的安装 (4)6.2 仪表主机安装 (8)6.3仪表的安装方式 (11)7.仪表电气连接 (12)7.1 仪表电气连接图 (12)7.2 仪表供电 (12)8. 仪表设置及使用 (13)8.1 仪表参数设置人机接口说明 (13)8.2 仪表操作目录树 (14)8.3 仪表运行界面示意 (15)8.4 仪表校准操作 (16)8.5仪表校准操作图示 (16)９.外贴式液位开关选型表 (19)10.仪表适用范围 (20)11.性能指标 (20)12.仪表故障处理 (21)1、使用说明本说明书全面阐述了外贴式液位开关的安装、操作及使用方法。

通过本说明书，用户可以顺利的完成对外贴式液位开关的安装、使用及维护工作。

本说明书的编制是以外贴式液位开关的安装、操作步骤为顺序，详细介绍了您在安装、使用仪表的每个环节需要完成的工作及注意事项。

在您安装、使用该仪表之前，请详细阅读本说明书。

2、仪表保修及服务范围自发货之日算起，仪表主机保修期为一年，仪表修理及维护的保修期为半年，此保修仅限于原始购买者及或声科电子指定经销商的仪表使用用户，而不适用于任何声科电子认为因错误使用，改造、疏忽或因事故及非正常情况下使用而导致损坏的仪表。

对于在保修范围内的送回声科电子的有故障的仪表，声科电子提供免费维修。

要获得保修服务，请联系声科售后服务部并附上故障说明，经本公司许可后，将仪表寄往声科售后服务部。

如果仪表已过质保期或声科电子确认仪表故障是由于错误使用、改造、疏忽、事故及非正常条件下使用导致的，声科电子将依据外贴式液位开关维修收费标准提供维修费用预算，并在得到认可后进行维修。

UK系列液位开关安装使用说明书开封仪表厂液位仪表分厂UK一102球形液位开关使 用 说 明 书l、用途和使用范围UK一1 0 2球形液位开关(以下简称开关)主要是对液位定点发讯，实现生产过程中的报警，控制，调节等作用，在酸、碱溶液或供水、排水、化工污水处理等生产过程中，是不可缺少的工具，开关的主要零件均采用1Cr18Ni9Ti不锈钢制造，具有较好的耐腐蚀性能。

其特点是：经济实用、工作可靠、用途广泛。

2、规格及技术参数2.1 关电缆长度： 4、 5、 6m（或由用户提出一个长度）2.2 介质密度：2.3 介质温度： ≤100℃2.4 工作压力： 0.2MPa一个常开2.5 接点容量： 220V AC 5A2.6 发二个讯号 （一个常开，一个常闭）3、结构原理及安装使用3.1 开关结构简单、结构如图(一)开关外壳为不锈钢球体，表面光滑，不易附着污物，可在混有杂物污水、泥浆、酸、碱溶液中使用，球体内装有大容量的水银开关，水银开关接于软质电缆上，加长或缩短电缆长度，可得到希望水位。

3.2 开关悬空吊在固定杆上，如图(二)a所示，当液位上升液面接触到开关时，开关球体在浮力的作用下发生倾斜，如图(二)b所示，由此使开关球体内水银开关断开或闭合，从而发出信号。

4、订货须知订货时请注明4.1 开关型号及名称4.2 被测介质名称、介质密度、温度、工作压力腐蚀性等。

UK一201球形液位开关使 用 说 明 书UK一201型圆柱形液位开关(以下简称液位开关)，主要是对液位定点发讯，实现生产过程中的报警、控制、调节等作用，在供水、排水、化工污水处理等过程中，是不可缺少的工具。

1、主要规格和技术参数1.1 电源：电压220V／50Hz 允许电流5A1.2 环境温度：60℃以下1.3 介质比重： 0.75以上1.4 规格(电缆长度L：)3M、5M、6M或其它任一长度。

1.5 种类：UK一201K 悬吊状态时触点断开浮起状态时触点闭合常开型UK一201B 悬吊状态时触点闭合浮起状态时触点断开常闭型2、结构及工作原理液位开关是浮动开关，它是把特殊构造的水银开关与通用橡套软电缆连在—一起，用环氧树脂(加有填料)浇铸成芯子、安装(插装)在硬质发泡塑料浮上。

电极式液位开关一、工作原理电极式液位开关是利用液体之导电性来侦测液位高低。

桶槽内装的物质一旦触及极棒，便会导电因而检出信号。

经控制器的信号放大后，再输出一接点信号，供使用者做液位的控制。

接线示意图二、产品特点1、适用于控制任何导电液体之液面。

（禁止使用于挥发性液体）2、具有突波保护功能，可有效防止突波干扰3、可做多点控制，控制位置可由使用者需要订制4、电极头使用低交流电压，可避免电解作用，并可延长使用寿命5、具有两只指示灯，可显示供水及排水状态三、技术参数电极棒部分：1、接液材质（可选）：SUS304/316L+PP（PE）工作温度：-20～80℃SUS304/316L+PTFE 工作温度：-20～200℃TI+PTFE 工作温度：-20～200℃2、过程连接：螺纹或法兰，（大小跟所需控制液位点数有关）控制器：1、电源电压：220VAC、24VAC（可选）2、触点容量：240VAC/24VDC 5A， SPDT3、一个控制器对应一个液位点输出（检测几个液位点对应配几个控制器，且每个控制器的公共极均需同电极棒的公共极相连）。

四、注意事项1、只供垂直安装2、电压波动范围在±15%以内，电压要稳定3、避免安装在大震动或冲击场所（可能导致误动作）4、不导电的液体不适用本产品，如：汽油、柴油、重油、纯水等。

5、所有的极棒需与最长的极棒相差至少50mm以上（如图）6、当液体接触到电极时，其动作的作罢会因液体种类不同及电源电压变化而会有变动。

7、为了使电极棒在水中确保不会相互接触，可以在极棒上缠上胶带，但必须缠在极棒前端100mm以后的部分。

基本原理上升的液面将浮球或弹簧提升式沉筒浮起，带动磁力短管上升至磁场区，吸引并触发电路或气路开关（发出液位到达信号）。

液面下降时，次序相反，电路或气路开关被释开（发出液位下降信号）。

磁力滑块（通过密封套筒）将永久磁铁和开关组件与过程液面隔离，避免磁铁腐蚀和磁力碎屑堆积。

磁力运动传输消除了由机械装置弯曲运动传输带来的疲劳，损坏及过早失效等问题。

磁力运动传输避免了因探杆型传感器引起的表面涂层问题。

在没有工厂允许的情况下，不要改变开关的原件和结构。

沉筒式结构液面下降时各次序相反，磁力短管下落至磁场外，复位弹簧将外部磁铁拽离密封套管，微动开关复位。

浮球式结构SOR液位开关使用说明书浮球与一根机械连杆固定在一起，液面上升至浮球，浮力使连杆上升，磁力短管升入密封套筒中，磁力短管的向上运动是在外部永久磁铁产生的磁场内。

磁力把外部磁铁吸向磁力短管，牢固地吸附在密封套管上，此时，微动开关被触发。

液面下降时各次序相反。

磁力短管下落至磁场外，复位弹簧将外部磁铁拽离密封套筒，微动开关复位。

沉筒悬挂在弹簧平衡联动杆上，液面上升时，沉筒的有效重量因受浮力而减小，弹簧回缩拉起连杆，使磁力短管在密封套筒中上升。

磁力短管的向上运动是在外部永久磁铁产生的磁场内，磁力把外部磁铁吸向磁力短管，牢固地吸附在密封套筒上，此时，微动开关被触发。

引压口联接外浮筒接管应当平直且不受干扰，控制头与外浮筒垂直中心线在3℃内。

注意：顶装式控制头与容器法兰或短管安装成与容器的垂直或水平中心线不超过3℃。

（即：外浮筒式与顶装式均应垂直安装）接管长度应控制在最小，以使开关整体更稳定。

如有需要，应采用接管悬挂或支承装置。

控制机构在液体中动作，接管中很可能堆积沉淀物，应采用“T”形或“+”形管接头，允许定期清洗接管。

排污阀及吹扫阀可用于清洁外浮筒和接管。

正常运行中，所有接管上阀门应完全打开，因为限流可能导致误动作。

警告：介质温度超过232℃时，不推荐在外浮筒上使用保温材料。

光电液位开关光电开关/传感器工作原理、接线图、概要、特长发布者：david发布时间：变化引起的传感器污染、光轴偏位等。

〔原理〕对从传感器的稳定状态向不稳定状态的变化进行通知的功能，可与显示功能和输出功能明显区分。

稳定显示灯（绿色LED）对设置后的环境变化（温度、电压、灰尘等）的余度进行自我诊断后，用显示灯显示。

（如果余度足够，则会亮灯）。

动作显示灯（橙色LED）显示输出的状态。

对显示灯表示的余度进行输出后，进行通知。

〔目的〕能预测光电传感器的光轴偏离、透镜面（传感器面）的污染、地面和背景的影响、外部干扰的状态等传感器的异常和故障，有利于进行养护，以便设备稳定工作。

〔例〕入光时ON的情况下显示灯的状态橙色显示灯所表示的入?遮光状态绿色显示灯显示的温度变化所对应的余度自我诊断输出诊断情况示例入光橙色显示灯：灯亮可稳定使用。

（余度10～20％以上）（绿色显示灯：灯亮）－－－－稳定余度不充分。

（绿色显示灯：灯灭）这种状态持续一定时间以上时，可通过输出通知该情况。

遮光橙色显示灯：灯灭可稳定使用。

（余度10～20％以上）（绿色显示灯：灯亮）－－－－〈适用机型〉按构成分类型号自我诊断功能登载页显示功能输出功能光纤式E3X-DA-S数字显示●68E3X-MDA数字显示－E3X-NA●●86放大器分离型E3C-LDA数字显示●108E3C●●(E3C-JC4P)124E3Z●＊140E3T●－190E3S-C●－200E3S-CL●－210E3S-CR62/67●－312E3S-R●－318关于E3Z的自我诊断输出型，请咨询。

⑥外部诊断输入功能（投光停止功能）〔原理〕通过将对射型投光器的导线「粉」「蓝」间短路，可在任意时间使投光停止。

投光器和受光器间没有检测物体时，即使对投光器进行ON/OFF设置，如果受光器侧的输出没有ON/OFF，说明传感器发生异常。

〔目的〕通过该功能，在工作前可进行传感器的动作检查。

共通注意事项★各商品的注意事项，请参见各商品的「请正确使用」。