称重传感器，又称为测力传感器和压力传感器，是一种将质量信号转变为可测量的电信号输出的装置，主要有S型、悬臂型、轮辐式、波纹管式、单点式、桥式、柱式等几种样式。称重传感器的工作原理原理上称重传感器就是压力传感器, 只是形状不一样而已。

The PR 6251 range of load cells is specially designed for easy weighing of silos and horizontal tanks. The unique design principle ensures a very compact construction. As a result, existing applications can also be upgraded very easily. The range distinguishes itself above all for its unmatched reliability, robustness and stability, which enable trouble-free operation without adjustment, year after year.

Sartorius PR6251的所有量程都为筒仓和卧式油槽称重测量应用而设计，气独一无二的设计理念使得PR6251结构紧凑，现有应用更新操作简单。无与伦比的可靠性、稳健性和稳定性使得传感器年复一年后仍能无障碍操作，无须校准。

Special measuring element geometry ensures that the transmission of force into the sensor is always at the optimum level. This minimizes the effect on measurement accuracy whilst a high overload range, high repeatability and good linearity are maintained. There is a particularly wide working temperature range attributable to special resistance strain gauge technology. The hermetically sealed enclosure and special TPE cable allow the unit to be used even under extreme operating conditions in harsh production environments.

PR6251测量元件的特殊几何结构总能确保传感器机身内部力传递处于最佳水准，实现高量程超载对精度影响的最小化，保持良好的重复性与线性。得益于独特地电阻应变计技术，PR6251的工作温度范围非常广。其全密封外壳和特殊TPE材质电缆线使得传感器能在极端恶劣操作环境无障碍应用。

The entire measurement chain can be calibrated without the use of a reference weight.

A version is also available with a direct output of 4…20 mA. This facilitates easy and cost-effective integration into an existing application. An explosion-proof (Ex) version of this range of load cells is also available, as an option, for use in intrinsically safe environments.

整个量测链无须砝码即可校准，用户可单独购买4-20mA输出模块，并整合到目前即有应用上，简单划算。所有量程都有防爆版本可选。

传感器结构

Hermetically sealed, welded stainless steel construction, filled with Polyurethane

密封、焊接不锈钢结构，填充聚氨酯。

材质

500 kg… 10 t 1.4021 (DIN 17440),

420 S 37 (B.S.)

16 t 1.4542 (DIN 17440),

S 604/S 622 (B.S.), 17-4 PH (Int.)

防护等级

IP68, IEC 529, equivalent to NEMA 6. The load cell can be submerged in water to a depth of 1.5 m for 10,000 hours.

IP68，IEC 529（相当于NEMA 6）.传感器可潜入水下1.5m工作10000小时

电缆

Robust, flexible, screened

稳健，柔韧度好，屏蔽

Sheath: Thermopl. Elastomere,

鞘：耐高温，高弹性

Colour: grey (LE: blue, LA/LAC: green)

颜色：灰色（LE：蓝色，LA/LAC：绿）

Diameter: 5 mm, wires 4 x 0.35 mm2

尺寸：5mm，线：4x0.35mm2

Length: 5 m

长度：5m

弯曲半径

Fixed installation: ≥ 50mm

固定安装：≥ 50mm

Flexible installation: ≥ 150mm

灵活安装：≥ 150mm

合格证

II 1G EEx ia IIC T6, II 1D IP65 85°C

注册号

PTB 02 ATEX 2059, TüV 03 ATEX 2301x