설명
ZS Series – Load Cell
Product Description
Note: Not available in the US.
The ZS load cells are made entirely of a special stainless steel and are, therefore, also suitable as weighing plants under difficult environmental conditions. The sensor element itself is fabricated as a transverse body. A metal diaphragm, which is welded on to the deformation zone protects the sensitive strain gauges from environmental influences. As a result constant measuring characteristics
are ensured. Compensation and adjustment elements, which are required for the exact setting of the guaranteed technical parameters, are positioned in a special chamber, which is also sealed. The load cell can be subjected to traction or compression force. An assembly kit, which can be ordered separately, facilitates the unproblematic and safe installation of the load cell in the weighing unit. As a standard, the load cells are supplied with a 3 m long connection cable. Of course, these load cells, calibrated in Newton (N), can also be supplied as high-precision transducers up to the accuracy class 0.05%.
Features
- 0.5 t to 5 t (2 kN to 50 kN)
- Approved for use in calibrated weighing systems
- High accuracy (C1, C3 or 0.1 and 0.05)
- Hermetically-sealed housing (IP 67)
- Made of stainless steel
- Appliances for easy assembly
- EU approval *
Specifications
| ACCURACY CLASS | %S | 0.1 | 0.05 | C1 | C3 a) |
|---|---|---|---|---|---|
| MECHANICAL CHARACTERISTICS | |||||
| Nominal force (=FN) | kN | 2/3/5/10/20/50 d) | |||
| Nominal load (=FN) | t | 0.5/1/2/5 | |||
| Max. permissible force/load | %FN | 150 | |||
| Ultimate overload | %FN | >300 | |||
| Max. transverse force/load | %FN | 10 | |||
| Minimum application range | %FN | 50 | |||
| ELECTRICAL CHARACTERISTICS | |||||
| Nominal sensitivity(=S) | mV/V | 2.000 ±0.002 | |||
| Zero tolerance band | %S | ≤1 | |||
| Max. excitation voltage | V | 12 | |||
| Input resistance. | Ω | 380 ±30 | |||
| Output resistance | Ω | 352 ±1.5 | |||
| Insulation resistance | Ω | >5 × 109 | |||
| Combined error b) | %S | ≤0.030 | ≤0.021 | ||
| Nonlinearity c) | %S | ≤0.1 | ≤0.05 | ||
| Hysteresis c) | %S | ≤0.1 | ≤0.05 | ||
| Temperature effect on zero/10K | %S | ≤0.035 | ≤0.035 | ≤0.070 | ≤0.023 |
| Temperature effect on output/10K | %S | ≤0.1 | ≤0.05 | ≤0.017 | ≤0.008 |
| Creepage error (30 min) | %S | ≤0.1 | ≤0.05 | ≤0.050 | ≤0.017 |
| ENVIRONMENTAL CHARACTERISTICS | |||||
| Reference temperature | °C | +23 | |||
| Nominal temperature range | °C | -20°C to 60°C | -10°C to 40°C | ||
| Operating temperature range | °C | -30 . . . +70 | |||
| Storage temperature range | °C | -40 . . . +70 | |||
| Environmental protection (EN 60529) | IP67 | ||||
a) Test report No. D09-96 for ZS 0.5 t, 1 t and 2 t nominal load
b) According to VDI 2637
c) According to VDI 2638
d) Further nominal load and dimensions upon request
Option: The transducers can be delivered with an internal amplifier delivering an output signal of 0(4) – 20 mA or 0 – 10 V within precision classes 0.2 and 0.5.
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