Differential Pressure Switch
PascalSwitch 20 Differential Pressure Switch. Measurement range: 0 ... 20 Pa.
PascalSwitch 100 Differential Pressure Switch. Measurement range: 0 ... 100 Pa.
High precision measurement instrument for monitoring of differential pressures, available in
2 versions as PascalSwitch 20 and PascalSwitch 100.
Outstanding accuracy, reproducibility and long-term stability.
Two threshold values including delay function and hysteresis are freely programmable throughout the
whole measurement range.
Two threshold values including delay function and hysteresis are freely
programmable throughout the whole measurement range
Differential Pressure Switch
| Model | Description |
|---|---|
| PascalSwitch 20 | Differential Pressure Switch. Pressure range: 0 - 20 Pa |
| PascalSwitch 100 | Differential Pressure Switch. Pressure range: 0 - 100 Pa |
No mechanical moving parts (e.g. diaphragm)
in the measurement cell.
Very low accuracy error < ±0.25% FS (full scale)
or < ±1.5%m.V.(measured value) whichever is larger.
Very low offset drift <0.1Pa/year.
No hysteresis.
Insensitive to vibrations.
Not damaged by high differential pressures
up to 2 bar.
Clean room compatible designed
in the measurement cell.
Very low accuracy error < ±0.25% FS (full scale)
or < ±1.5%m.V.(measured value) whichever is larger.
Very low offset drift <0.1Pa/year.
No hysteresis.
Insensitive to vibrations.
Not damaged by high differential pressures
up to 2 bar.
Clean room compatible designed
Two threshold, hysteresis and delay values are
freely programmable.
Two integrated relays max. 2A/60W.
LED display of the two alarm points.
Easy to calibrate (Zero and Gain).
Customer specific configuration is possible.
Quick and simple programming with
PascalTool-Palm or Palm Emulator on PC.
Easy compensation of hose length by configuration
software
freely programmable.
Two integrated relays max. 2A/60W.
LED display of the two alarm points.
Easy to calibrate (Zero and Gain).
Customer specific configuration is possible.
Quick and simple programming with
PascalTool-Palm or Palm Emulator on PC.
Easy compensation of hose length by configuration
software
Differential Pressure Switch specification
| Type | PascalSwitch 20 | PascalSwitch 100 |
| Article-No. | 1115961 | 1115962 |
| Article-No. for PascalSwitch C | 1116386 | 1116387 |
| Measurement range | 0 ... 20 Pa | 0 ... 100 Pa |
| Max. resolution | 0.016 Pa | 0.07 Pa |
| Measurement interval | 150 ms ... 1350 ms | 150 ms ... 1350 ms |
| Time constant | 10 ms | 10 ms |
|
Measurement accuracy (at 20°C/50%RH) (m.V. = of measured value) |
< 4 Pa = ± 0.05 Pa >/= 4 Pa = ± 1,5% m.V. |
< 17 Pa = ± 0.25 Pa >/= 17 Pa = ± 1.5% m.V. |
| Temperature effect | < 0.05% m.V./°C | < 0.05% m.V./°C |
| Atmospheric pressure effect (at 1013.25 hPa) | 0.1% m.V./hPa | 0.1% m.V./hPa |
| Hysteresis | 0.00% | 0.00% |
| Offset drift (at constant Temp. 20°C) | < 0.1 Pa/year | < 0.1 Pa/year |
| Max. permissible differential pressure | ± 2 bar | ± 2 bar |
| Max. permissible overpressure | 2 bar | 2 bar |
| Max. mass flow through the sensor | 120 sccm (0.12 liter/min) | 370 sccm (0.37 liter/min) |
| Operating temperature range | 0 ... 50°C | 0 ... 50°C |
| 2 Threshold values adjustable | > or < 0.01 ... 19.99 Pa | > or < 0.01 ... 99.99 Pa |
| 2 Relays (break- and make contacts) | max. 48V/2A and max. 60W resistive load |
max. 48V/2A and max. 60W resistive load |
| Digital interface | useable only for configuration or PC-Communication with PSwitchDLL | |
| Power supply | 10 ... 35 VDC | 10 ... 35 VDC |
| Power consumption | max. 1.2 W | max. 1.2 W |
| Protection | IP 54 / EMC | IP 54 / EMC |