Valcom VPD4 Series
- Determines differential pressure by computing the outputs from two pressure sensors
- Output 4-20mA (2 wire system) scaling function.
- Chooses from One output (Only the output of difference pressure) and Two output (The output of difference pressure + The Output of low pressure side)
- Pressure port with higher strength
- Safe and reliable construction with no sealed liquid.
Standard feature
- Display switch (Differential pressure, High pressure, Low pressure)
- Damping ●Loop check function ●FIX zero ●Zero shift
- Maximum/Minimum display ●Setting output status at error ●Key lock function
| Measured medium | Liquor, milk beverage, seasoning, pure water, chemical or other media. (These vary according to sensor materials) |
|---|---|
| Pressure type | Positive pressure |
| Pressure range | Can be specified within the range of 50 kPa to 1000 kPa of rated capacity. |
| Output type | 4~20mA (2 wire system) Output scaling variable. Output scaling can be changed within the range of 10 to 100% of the rated capacity. |
Specification 1 (Sensor assembly)
| Pressure Port Type/Size | ISO Ferrule, VARIVENT®, ISO Cap nut |
|---|---|
| Rated Capacity(R.C.) | 50kPa～3MPa |
| Material | Sensor: SUS316L / Hastelloy C276 / SUS329J4L |
| Safe Overload Rating | 400%R.C. |
| Destruction Point | 1000%R.C. |
Specification 2 (Amplifier + Sensor assembly)
| Normal Temperature Accuracy(*1) (Non Linearity, hysteresis and repeatability included.) |
Differential Pressure | 20~100%R.C.: ±0.7%F.S. 10~20%R.C.: ±1.4%F.S. |
|
|---|---|---|---|
| Low Pressure | 2 output | 20~100%R.C.: ±0.5%F.S. 10~20%R.C.: ±1%F.S. |
|
| 1 output (No analog output) |
±0.5%F.S. | ||
| High Pressure (No analog output) |
±0.5%R.C. | ||
| Compensated Temperature Range | -5～150°C(Temperature of medium to be measured) | ||
| Safe Temperature Range | -5～150°C(Temperature of medium to be measured) | ||
| Temperature Effect on Zero Balance | ±0.6%R.C./10°C or less (Rating 300kPa, 500kPa, 1000kPa) ±0.7%R.C./10°C or less (Rating 50kPa, 100kPa, 200kPa) |
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| Temperature Effect on Load | ±0.6%R.C./10° or less (Rating 300kPa, 500kPa, 1000kPa) ±0.7%R.C./10°C (Rating 50kPa, 100kPa, 200kPa) |
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| Ambient Temperature | 0～50°C(No condensation or freezing) | ||
| Material | Aluminum die casting(Case material)、PET(Front sheet part) SUS304(Radiating fin, Adapter) |
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| IP Rating | Equivalent to IP67 | ||
| Accessories | Operation manual (1 copy), Test report (1 copy), Cable gland, Brackets for exclusive use of the PP type, U character bolt for brackets for exclusive use of the PP type, Hexagon nut for PP type fixation |
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(*1) For the ferrule type, zero adjustment is to be made after the clamp is tightened.
