Level Measurement | Prozessi PX 30
The Level Measurement trainer Prozessi PX 30 demonstrates differential pressure and air purge liquid-level measurement methods. Features a capacitance DP transmitter with smart digital indicator, U-tube manometer, air pump and transparent acrylic process tank with graduated scale. Six experiments cover DPT calibration, air purge principles and density measurement. Includes 5000 LPH water pump and loop current measurement provision. Tabletop assembly 650W x 475D x 540H mm.
The Level Measurement trainer Prozessi PX 30 demonstrates liquid-level measurement using differential pressure transmitters and air purge methods. This Level Measurement system includes an air pump, DPT, manometer and digital indicator for hands-on study of industrial level sensing principles.
Product Overview
The Level Measurement trainer Prozessi PX 30 provides two methods for measuring tank level on a single platform. A capacitance-type differential pressure transmitter (0-200 mm range, 4-20 mA output) with smart digital local indicator connects to a transparent acrylic process tank (200 mm graduated scale). A 5000 LPH water pump circulates water from a 7-liter SS304 supply tank. An air pump (2.5 LPM capacity) supplies pressurized air through an air purge tube submerged in the process tank. A U-tube manometer (range 100-0-100 mm) displays the differential pressure directly. A digital level indicator (0-200 mm range) shows transmitter output powered by 230 VAC. The tabletop assembly measures 650W x 475D x 540H mm and requires only clean water and standard electric supply.
Level Measurement Trainer Prozessi PX 30 — Technical Specifications
| Specification | Value |
|---|---|
| Product Code | Prozessi PX 30 |
| Air Pump Capacity | 2.5 LPM |
| Manometer Range | 100-0-100 mm, Box type |
| DP Transmitter Type | Capacitance, Smart series with digital local indicator |
| DP Transmitter Range | 0-200 mm, 4-20 mA output, Two wire |
| Process Tank | Transparent acrylic, 200 mm graduated scale |
| Level Indicator | Digital, Range 0-200 mm, Supply 230 VAC |
| Water Pump Capacity | 5000 LPH |
| Supply Tank | Capacity 7 liter, SS304 stainless steel |
| Overall Dimensions | 650W x 475D x 540H mm |
Technical Data
Level Measurement Components
| Component | Specification |
|---|---|
| DP Transmitter | Capacitance type, Smart series |
| Transmitter Range | 0-200 mm liquid column |
| Transmitter Output | 4-20 mA, Two wire |
| Local Digital Indicator | Built into transmitter, 0-200 mm display |
| Transmitter Power | 24VDC via digital level indicator |
| Manometer Type | U-tube box type |
| Manometer Range | 100-0-100 mm for direct pressure observation |
Air Purge System
| Component | Specification |
|---|---|
| Air Pump | Capacity 2.5 LPM |
| Air Supply Pressure | Adjustable via regulator |
| Air Purge Tube | Submerged in process tank |
| Principle | Back pressure method, pressure equals liquid column height |
Water Circulation System
| Component | Specification |
|---|---|
| Pump Capacity | 5000 LPH |
| Pump Type | Centrifugal |
| Supply Tank | SS304 stainless steel, 7 liter capacity |
| Process Tank | Transparent acrylic, 200 mm graduated scale |
| Flow Control | Manual ball valve |
Electrical and Measurement
| Component | Specification |
|---|---|
| Level Indicator Display | Digital, 0-200 mm range |
| Indicator Supply | 230 VAC, 50 Hz, 1 phase |
| Loop Current Measurement | Provision to tap and measure 4-20 mA signal |
| Transmitter Calibration | Adjustable via transmitter front panel |
Key Features
- Level Measurement trainer: dual method demonstration on single system
- Differential pressure transmitter with smart digital indicator
- Air purge method for direct level measurement principle
- U-tube manometer for visual pressure observation
- Transparent process tank with graduated scale for verification
- High capacity water pump (5000 LPH) for rapid level changes
- Loop current measurement provision for transmitter troubleshooting
- Compact tabletop assembly, 650W x 475D x 540H mm
- Non-corrosive SS304 supply tank
Experiments
- Study of level measurement by differential pressure transmitter (DPT)
- Study of DPT calibration and adjustment
- Level measurement by air purge method
- Liquid density measurement using pressure and height relationship
- DP transmitter troubleshooting via loop current measurement
- Comparison of DPT and air purge methods
Construction and Design
The Level Measurement trainer Prozessi PX 30 is assembled on a tabletop frame (650W x 475D x 540H mm) with two independent but interconnected measurement systems. A transparent acrylic process tank with 200 mm graduated scale sits at the center. A capacitance differential pressure transmitter connects to the bottom of the tank, measuring liquid pressure. The transmitter’s smart digital indicator displays level directly (0-200 mm range) powered by 230 VAC. A U-tube manometer (100-0-100 mm range) provides independent visual confirmation of differential pressure. An air pump (2.5 LPM) supplies pressurized air to a purge tube submerged near the tank bottom. As air bubbles rise, back pressure equals the liquid column height, demonstrating the air purge principle. A 5000 LPH centrifugal pump circulates water from a 7-liter SS304 supply tank into the process tank. A manual ball valve controls flow rate, enabling rapid or gradual level changes for response testing. Provision exists to connect a multimeter and measure the 4-20 mA loop current from the DP transmitter for calibration verification and troubleshooting.
Software and Calibration
The Level Measurement trainer allows hands-on calibration of the DP transmitter using the graduated scale as a reference. Students adjust transmitter zero and span using front panel controls until 4-20 mA output matches liquid level accurately. Loop current measurement enables verification of transmitter function and signal conditioning.
Scope of Delivery
- Level Measurement trainer Prozessi PX 30 complete assembly
- Differential pressure transmitter, capacitance type, with smart digital indicator
- U-tube manometer, box type, 100-0-100 mm range
- Air pump, 2.5 LPM capacity with regulator
- Air purge tube and fittings
- Transparent acrylic process tank with 200 mm graduated scale
- SS304 supply tank, 7 liter capacity
- Centrifugal water pump, 5000 LPH capacity
- Digital level indicator display, 0-200 mm, 230 VAC powered
- Manual ball valve for flow control
- Interconnecting tubing and fittings
- Frame assembly, 650W x 475D x 540H mm
- User documentation and experimental procedures
- Power cord
Optional Accessories
- Extended air tubing for remote operation
- Additional U-tube manometers
- Replacement DP transmitter units
- Data acquisition interface kit
Q1: What are the two level measurement methods on the Level Measurement trainer?
A: The trainer demonstrates differential pressure transmitter measurement and air purge method, allowing direct comparison of both industrial level sensing techniques.
Q2: How accurate is the Level Measurement trainer?
A: The transparent process tank graduated scale provides visual reference to 1-2 mm accuracy, while the DP transmitter 4-20 mA output can be calibrated to match within 0.5% of the displayed range.
Q3: Can the DP transmitter be recalibrated?
A: Yes, the smart transmitter has adjustable zero and span on the front panel. Students calibrate using the graduated scale as reference and verify using loop current measurement.
Q4: What is the air purge method on the Level Measurement trainer?
A: Compressed air bubbles rise through a tube submerged in the tank. Back pressure required to push air out equals the liquid column height above the tube outlet, directly indicating level.
Q5: How quickly can liquid level change on the Level Measurement trainer?
A: The 5000 LPH pump allows level to change rapidly (seconds) for dynamic response study, or manually throttled to change slowly for steady-state calibration work.
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