Product Overview
The Aplisens APM-2 is a modular smart differential pressure transmitter system configured per application (measuring range, PC1/PC2 process connections, cable lengths, and approvals such as Ex ia / Ex d). For correct selection and accurate pricing, please call 865-900-8844 or email KSmith@CPSCalibrations.com.
The Aplisens APM-2 is a smart electronic differential pressure transmitter system that calculates differential pressure using two absolute pressure transmitters (PC1 and PC2) connected to a central unit. It is designed for applications such as hydrostatic level measurement in closed/pressure tanks, as well as density and phase boundary measurement. The modular design allows replacement of individual modules (central unit, PC1, or PC2) using M12 connections.
- System concept: Differential pressure calculated in the central unit from two absolute pressure readings
- Output: 4–20 mA + HART (HART 7)
- Accuracy: ≤ ±0.1%
- Hazardous area: Intrinsically safe (Ex ia) and explosion-proof (Ex d) versions available
- Long distance: Measuring points can be several dozen meters apart (cable length specified by user)
- Benefits: Avoids temperature-gradient errors typical of capillary oil-filled remote seal systems
- Diagnostics: Provides differential pressure, static pressure (PC1 & PC2), and temperature (central unit + both PCs)
Tell us your application (level, filter DP, density/interface), required nominal range, process connection type for PC1/PC2, and cable lengths (LP1/LP2), and we’ll confirm the correct APM-2 configuration and provide a formal quote.
| Feature | Details |
|---|---|
| Model | Aplisens APM-2 |
| Type | Smart modular electronic differential pressure transmitter system (central unit + two absolute pressure transmitters) |
| Output / Communication | 4–20 mA + HART 7 (minimum 240 Ω required for communication) |
| Accuracy | ≤ ±0.1% |
| Long-term Stability | ≤ accuracy for 3 years (for nominal measuring range) |
| Thermal Compensation Range | -25…80°C |
| Thermal Error | < ±0.1% (FSO) / 10°C (including diaphragm seal errors) |
| Processing Time | 0.5 s (calculation cycle period) |
| Additional Damping | 0…60 s (factory setting: 5 s) |
| Power Supply | 13…55 V DC |
| Load Resistance | R(Ω) ≤ (USUP[V] - 13V) / 0.0225A |
| Operating Temperature (ambient) | -30…85°C (special version: -40…85°C) |
| Maximum Medium Temperature | 150°C (special version: 200°C) |
| Ingress Protection | IP67 |
| Materials | Central unit: Aluminum (option SS316); Pressure transmitters: SS304; Wetted parts per diaphragm seal datasheets |
Nominal measuring ranges (FSO)
| No. | Nominal Measuring Range (FSO) | Minimum Set Range (DP) | Admissible Overpressure (PC1/PC2) | PC1/PC2 Measuring Range |
|---|---|---|---|---|
| 1 | 0…1 bar | 100 mbar | 25 bar | 2.5 bar ABS |
| 2 | 0…6 bar | 250 mbar | 40 bar | 16 bar ABS |
| 3 | 0…60 bar | 1 bar | 160 bar | 100 bar ABS |
Note: If the diaphragm seal pressure rating is lower than the values above, the diaphragm seal rating becomes the limiting factor.
APM-2 pricing depends on configuration. To quote correctly, we typically confirm:
| What We Need | Examples |
|---|---|
| Approval Version | /Exia (Ex ia IIC) or /Exd (Ex db ia IIC); IECEx options (as required) |
| Housing Option | Standard aluminum central unit or /SS stainless housing |
| Temperature Options | /-40°C ambient option; /200°C maximum medium temperature option |
| Nominal Range | /0÷1bar, /0÷6bar, or /0÷60bar |
| Set Range (4–20 mA scaling) | Calibrated DP range: 4 mA start value / 20 mA end value |
| LP1 / LP2 Cable Lengths | /LP1=…m and /LP2=…m (distance between central unit and PC1/PC2) |
| PC1 / PC2 Process Connections | Threaded (GP or CG1") or diaphragm seals (per diaphragm seal selection) |
| Electrical Connection | Packing gland M20x1.5 (standard) or /US (1/2" NPT female) |
Call 865-900-8844 or email KSmith@CPSCalibrations.com with your application details and we’ll build the correct APM-2 configuration and quote it.
Need help choosing the right nominal range (0–1 / 0–6 / 0–60 bar), process connections, or LP1/LP2 cable lengths? Contact us and we’ll help you size and configure the system.
