ALA Level Alarm Device
| Origin | Netherlands |
|---|---|
| Manufacturer Type | Distributor |
| Origin Category | Imported |
| Model | ALA Level Alarm Device |
| Price | Upon Request |
Overview
The ALA Level Alarm Device is a compact, field-deployable liquid level monitoring instrument engineered for integration with Ametek’s suite of environmental and analytical accessories—including condensers, water traps, and automated drain systems. Designed for continuous, unattended operation in laboratory, industrial, and emission monitoring settings, the ALA functions as a fail-safe interface that detects abnormal liquid accumulation before overflow occurs. Its operational principle relies on two distinct physical sensing modalities: conductive detection (for aqueous or ionically conductive media) and optical reflectance change detection (for non-conductive or low-conductivity fluids such as hydrocarbon condensates or silicone oils). This dual-sensing architecture ensures reliable alarm activation across heterogeneous sample matrices without requiring recalibration or fluid-specific setup—making it especially suitable for multi-stream gas sampling trains where condensate composition may vary unpredictably.
Key Features
- Dual-sensing technology: Simultaneous support for conductivity-based and optical reflectance-based level detection—enabling compatibility with both polar and non-polar condensates.
- Fail-safe relay output: SPDT (Single-Pole Double-Throw) dry-contact alarm signal compliant with IEC 61000-4 electromagnetic immunity standards, suitable for direct integration into PLCs, SCADA systems, or central alarm panels.
- IP65-rated enclosure: Robust polycarbonate housing rated for indoor and semi-outdoor installation environments, resistant to humidity, dust, and incidental splashing.
- No moving parts or consumables: Solid-state design eliminates mechanical wear, calibration drift, or maintenance intervals—supporting >50,000 operational cycles under typical lab conditions.
- Low-power operation: 12–24 V DC input range; typical current draw <25 mA—compatible with battery-backed or PoE-powered monitoring infrastructures.
Sample Compatibility & Compliance
The ALA Level Alarm Device is validated for use with condensate streams encountered in EPA Method 25A, ISO 12039, and EN 14792-compliant gas sampling applications. It interfaces seamlessly with Ametek’s AM-3000 series condensers and Auto-Drain modules, and has been verified for stable performance in ambient temperatures ranging from 5 °C to 45 °C and relative humidity up to 95% non-condensing. The conductive sensor variant complies with IEC 61000-6-2 (immunity) and IEC 61000-6-4 (emissions); the optical variant meets IEC 60529 (IP65) and UL 61010-1 safety requirements for laboratory equipment. While not intrinsically safe, optional ATEX-certified mounting kits (Category 3G) are available for Zone 2 classified areas upon request.
Software & Data Management
The ALA operates as a standalone hardware alarm module and does not incorporate embedded firmware, touchscreen UI, or network connectivity. Its output is strictly hardwired—designed for deterministic, latency-free triggering in safety-critical gas sampling workflows. For traceability and audit readiness, the device supports GLP/GMP-aligned documentation via external logging systems: when connected to a compliant data acquisition unit (e.g., Campbell Scientific CR1000X or Siemens Desigo CC), alarm events—including timestamp, duration, and reset status—are recorded with full 21 CFR Part 11 audit trail capability. Configuration and verification records are maintained externally per ISO/IEC 17025 clause 7.7 (Equipment Management).
Applications
- Preventive protection of gas analyzers (e.g., FTIR, GC-FID, NDIR) against condensate backflow in stack emission monitoring systems.
- Automated shutdown coordination in continuous emissions monitoring systems (CEMS) during high-moisture event conditions.
- Level supervision in chilled mirror hygrometers and permeation tube ovens where condensate pooling compromises dew point accuracy.
- Integration into ASTM D6348-compliant dilution tunnel setups for automotive exhaust testing, ensuring uninterrupted sample integrity during long-duration runs.
- Redundant level monitoring in pharmaceutical cleanroom compressed air systems per ISO 8573-1 Class 2 moisture control protocols.
FAQ
Does the ALA Level Alarm Device require periodic calibration?
No. As a threshold-detection device with no analog measurement output, it does not require calibration—only functional verification using certified test liquids or reflective targets per manufacturer’s SOP-ALA-01.
Can the ALA be used with corrosive condensates such as HCl-saturated water?
Yes—the conductive sensor uses platinum-coated stainless steel electrodes; compatibility with acidic, alkaline, or saline condensates is confirmed per ASTM G31 immersion testing (72 h, 25 °C). Material compatibility sheets are available upon request.
Is there a version with Modbus RTU or 4–20 mA output?
Not natively. However, third-party signal converters (e.g., Phoenix Contact MINI MCR-SL-U-I-UI-DC) can translate its relay output into industrial protocols while preserving functional safety integrity.
What is the maximum recommended cable length between the ALA sensor and controller?
For noise immunity, shielded twisted-pair cabling is required; maximum run length is 100 m at 24 V DC with ≤5 V drop (AWG 18 minimum). Longer distances necessitate local power injection or relay buffering.
