Weighing module · Tank, silo or hopper
WM-500
Pre-engineered module with baseplate and rocker assembly, for vessel legs without design work on your side.
Full specification
Every figure below is measured under controlled laboratory conditions. Test conditions are stated with the data. A per-unit calibration certificate is supplied with every sample and production order.
Capacity and accuracy
- Rated capacity
- 50 kg / 100 kg / 250 kg / 500 kg / 1 t / 2 t / 5 t
- Sensitivity (rated output)
- 1.5 mV/V
- Accuracy class
- C4
- Combined error
- ≤ 0.015 %F.S
- Non-linearity
- ≤ 0.015 %F.S
- Hysteresis
- ≤ 0.015 %F.S
- Repeatability
- ≤ 0.01 %F.S
- Creep (30 min)
- ≤ 0.01 %F.S
- Zero balance
- ± 0.05 mV/V
- Safe overload
- 150 % F.S
- Ultimate overload
- 300 % F.S
Temperature
- Temperature effect on zero
- 0.015 %F.S / 10 °C
- Temperature effect on output
- 0.02 %F.S / 10 °C
- Compensated temperature range
- −10 to +40 °C
- Operating temperature range
- −20 to +80 °C
Electrical
- Recommended excitation
- 5 VDC
- Maximum excitation
- 15 VDC
- Input impedance
- 405 ± 5 Ω
- Output impedance
- 350 ± 3 Ω
- Insulation resistance
- ≥ 5000 MΩ @ 100 VDC
- Recommended cable
- 4-core shielded, 3 m
Mechanical
- Material
- Alloy steel
- Dimensions
- —
- Mounting
- Complete module, pre-aligned
- Nominal displacement
- ≤ 0.5 mm
- Weight
- —
Safety and compliance
- Protection class
- IP68
- Approvals
- CE, RoHS, OIML R60, ATEX
- Calibration
- Per unit, certificate supplied with every sample and production order
- Material traceability
- Batch level, available on request
Drawings and CAD models
Download the STEP model and the dimensioned drawing to check the mounting hole pattern and cable entry against your own assembly. If you need a specific cable length or connector, tell us and we will confirm whether that variant is available or needs to be modified.
Complete the signal chain
A load cell alone gives you millivolts. These are the components our engineers usually pair with WM-500.
| Component | Purpose | Note |
|---|---|---|
| Sealed junction box, IP67 | Corner trim adjustment and connector protection | Required for any multi-cell installation |
| 4–20 mA / RS485 transmitter, 24 VDC | Converts to the signal your PLC accepts | WM-500-T1 |
| Shielded 4-core cable | Sensor to junction box run | Shielded type — unshielded picks up motor noise |
| DIN-rail weight indicator | Local readout at the machine | Optional if you read from the PLC |
Approvals and certificates
Certificate numbers, covered models and validity dates are listed below. Models not listed are not covered by these approvals.
| Standard | Certificate no. | Covered models | Valid until | Document |
|---|---|---|---|---|
| CE | — | WM-500 series | — | Request copy |
| RoHS | — | WM-500 series | — | Request copy |
| OIML R60 | — | WM-500 series | — | Request copy |
| ATEX | — | WM-500 series | — | Request copy |
Available variants
Other capacities, cable lengths and output options are available on request. MOQ from 1 piece for catalogue variants.
Request a quotation
Send us the application, the load condition and the output signal you need. A named engineer — not an autoresponder — replies within 24 hours with a price indication and lead time.