NPA 01 44209-810.01 应用于模拟量输出电压卡 GRUNDIG
=腹板/带材张力
FR=测量方向上腹板/带材张力的分力，R
FRT=测量方向上皮重的分力，R
FRtot=测量方向上的总力，R
FV
=横向腹板/带材张力的分力，V
FVT=皮重横向分力，V
FVtot=横向总力，V
皮重=因皮重产生的力
压力导管枕式称重传感器，水平测量PFTL 101，用户手册
2.说明
3BSE009965R0401 en版本F 15
α=#横滚一侧相对于水平面的反射角
β=#横滚另一侧相对于水平面的反射角
T
T
FR
FV
杂草
+α +β
图11.水平安装
2.5.3倾斜安装
“倾斜安装”指称重传感器相对于水平面倾斜的布置
飞机在某些情况下，这是的选择。
计算力时，必须使用以下公式：
FR=T×[cos（β+γ）-cos（α-γ）]
FRT=皮重×sinγ
FRtot=FR+FRT=T×[cos（β+γ）-cos（α-γ）]+（-Tare x sinγ）
FV
=T×[sin（α-γ）+sin（β+γ）]
FVT=-皮重×cosγ
FVtot=FV
+FVT=T×[sin（α-γ）+sin（β+γ）]+皮重×cosγ
哪里：
T=腹板/带材张力
FR=测量方向上腹板/带材张力的分力，R
FRT=测量方向上皮重的分力，R
FRtot=测量方向上的总力，R
FV
=横向腹板/带材张力的分力，V
FVT=皮重横向分力，V
FVtot=横向总力，V
皮重=因皮重产生的力
α=#横滚一侧相对于水平面的反射角
β=#横滚另一侧相对于水平面的反射角
γ=称重传感器安装表面相对于水平面的角度
压力导管枕式称重传感器，水平测量PFTL 101，用户手册
2.说明
16 3 BSE009965R0401 en版本F
在计算时，重要的是将角度设置为具有正确符号的方程式
关于水平面，参见图12。倾斜安装17页。
FR皮重、皮重、FV、FV
FR
T
T
T
T
+β +α
-α水平面
-γ
-β
+γ
图12.倾斜安装
2.6电路
称重传感器的电路如下图所示。
（信号）
次要的
环行
主要的，重要的
环行
C
D
A.
B
T
0.5 A/330 Hz
R1
R2
次级电路
（信号）
（电源电流）
图13.称重传感器电路图
向称重传感器提供0.5 a、330 Hz的交流电。二次信号被校准
对于分压器R1的正确灵敏度：
-R2
，并提供温度补偿
通过热敏电阻T。
次级侧上的所有电阻相对较低。输出阻抗通常为1-3Ω，
这有助于抑制干扰。
压力导管枕式称重传感器，水平测量PFTL 101，用户手册
2.说明
3BSE009965R0401欧洲标准17版
3.
安装
3.1概述
该设备是一种精密仪器，
必须小心处理。称重传感器在安装前不得打开包装。
为了达到规定的精度、佳的可靠性和长期稳定性，称重传感器
必须按照以下说明进行安装。另请参阅中的6.4故障跟踪
机械安装。
•当PFTL 101AER或PFTL 101 BER型称重传感器用于耐酸试验时
应用建议使用奥氏体、耐酸的转接板和螺钉
钢
信息
对于这些称重传感器类型的所有安装类型，必须使用奥氏体钢，
优选耐酸或不锈钢。
•称重传感器的基础必须尽可能稳定。坚固的结构
减少测量辊和轴承装置的振动能量。
•接近称重传感器的表面以及影响配合的其他表面必须进行机加工
fl@t至0.05mm以内。
•称重传感器上方或下方不得有任何垫片
不利影响fl@tness
相反，垫片可以是p
NPA 01 44209-810.01 应用于模拟量输出电压卡 GRUNDIG
NPA 01 44209-810.01 应用于模拟量输出电压卡 GRUNDIG
= Web/strip tension
FR = Force component from web/strip tension in measurement direction, R
FRT = Force component from Tare in measurement direction, R
FRtot = Total force in measurement direction, R
FV
= Force component from web/strip tension in transverse direction, V
FVT = Force component from Tare in transverse direction, V
FVtot = Total force in transverse direction, V
Tare = Force due to tare weight
Pressductor PillowBlock Load Cells, Horizontal Measuring PFTL 101, User Manual
2 Description
3BSE009965R0401 en Rev F 15
α = #eflection angle on one side of the roll relative the horizontal plane
β = #eflection angle on the other side of the roll relative the horizontal plane
T
T
FR
FV
Tare
+α +β
Figure 11. Horizontal Mounting
2.5.3 Inclined Mounting
Inclined mounting means arrangements in which the load cell is inclined relative to the horizontal
plane. In some cases this is the only option.
When calculating the force, the equations below must be used:
FR = T × [cos (β + γ) - cos (α - γ)]
FRT = Tare × sin γ
FRtot = FR + FRT = T × [cos (β + γ) - cos (α - γ)] + (- Tare x sin γ)
FV
= T × [sin (α - γ) + sin (β + γ)]
FVT = - Tare × cos γ
FVtot = FV
+ FVT = T × [sin (α - γ) + sin (β + γ)] + Tare × cos γ
where:
T = Web/strip tension
FR = Force component from web/strip tension in measurement direction, R
FRT = Force component from Tare in measurement direction, R
FRtot = Total force in measurement direction, R
FV
= Force component from web/strip tension in transverse direction, V
FVT = Force component from Tare in transverse direction, V
FVtot = Total force in transverse direction, V
Tare = Force due to tare weight
α = #eflection angle on one side of the roll relative the horizontal plane
β = #eflection angle on the other side of the roll relative the horizontal plane
γ = Angle for load cell mounting surface relative the horizontal plane
Pressductor PillowBlock Load Cells, Horizontal Measuring PFTL 101, User Manual
2 Description
16 3BSE009965R0401 en Rev F
When calculating it is important that the angles are set into the equations with the correct signs in
relation to the horizontal plane, see Figure 12. Inclined Mounting page 17.
FR Tare Tare FV FV
FR
T
T
T
T
+β +α
-α Horizontal plane
-γ
-β
+γ
Figure 12. Inclined Mounting
2.6 The Electrical Circuit
The electrical circuit of the load cell is shown in the diagram below.
(signal)
Secondary
circuit
Primary
circuit
C
D
A
B
T
0.5 A/330 Hz
R1
R2
Secondary circuit
(signal)
(supply current)
Figure 13. Load cell circuit diagram
The load cell is supplied with a 0.5 A, 330 Hz alternating current. The secondary signal is calibrated
for the correct sensitivity with a voltage divider R1
- R2
, and temperature compensation is provided
by thermistors T.
All resistances on the secondary side are relatively low. The output impedance is typically 1-3 Ω ,
which helps to suppress interference.
Pressductor PillowBlock Load Cells, Horizontal Measuring PFTL 101, User Manual
2 Description
3BSE009965R0401 en Rev F 17
3
Installation
3.1 General
The equipment is a precision instrument which, although intended for severe operating conditions,
must be handled with care. The load cells should not be unpacked until it is time for installation.
To achieve the specified accuracy, the best possible reliability and long-term stability, the load cells
must be installed in accordance with the instructions below. See also 6.4 Fault Tracing in the
Mechanical Installation.
• When a load cell type PFTL 101AER or PFTL 101BER is used for an acid resistant
application it is recommended to use adapter plates and screws of austenitic, acid resistant
steel.
Information
For all types of installations of these load cell types, austenitic steel must be used,
preferably acid resistant or stainless steel.
• The foundation for the load cell must be made as stable as possible. A sturdy construction
reduces the vibration energy of the measuring roll and bearing arrangement.
• The surfaces closest to the load cell, and other surfaces that affect the fit must be machined
fl@t to within 0.05 mm.
• There must not be any shims immediately above or below the load cell, as this may
adversely affect the fl@tness
Instead, shims may be p
NPA 01 44209-810.01 应用于模拟量输出电压卡 GRUNDIG
