ATSFAAR 200/5000L Constant-Temperature Water Bath for Pipe Hydrostatic Testing

Overview

The ATSFAAR 200/5000L Constant-Temperature Water Bath is an engineered thermal conditioning system specifically designed to support standardized hydrostatic pressure testing of thermoplastic and thermoset piping systems—commonly used in potable water, gas distribution, irrigation, and industrial fluid conveyance applications. Operating on the principle of precise liquid-phase thermal equilibrium, the bath maintains a stable, uniform water temperature across its entire working volume—critical for ensuring compliance with ISO 1167-1:2023, ASTM D1598, EN 921, and GB/T 6111 test protocols. Unlike generic immersion tanks, this unit integrates PID-controlled heating/cooling circuits, insulated stainless-steel construction (AISI 304), and calibrated temperature monitoring at multiple spatial points to guarantee ±0.3 °C thermal stability over extended test durations (up to 10,000 hours per cycle). Its primary function is not direct pressure measurement but rather to provide a thermally invariant medium that eliminates thermal expansion artifacts during sustained internal pressure evaluation of pipe specimens.

Key Features

• Modular capacity architecture: Available in two standard configurations—200 L for small-diameter pipes (≤DN 110) and 5000 L for large-diameter structural conduits (up to DN 1200), enabling scalable laboratory or QA facility deployment.
• High-efficiency thermal management: Dual-mode heating (electric immersion elements) and cooling (integrated chiller interface) ensure rapid temperature ramping (≤2 °C/min) and long-term stability under load.
• Corrosion-resistant tank construction: Fully welded AISI 304 stainless-steel vessel with reinforced base plate and reinforced lid sealing system to withstand continuous immersion and mechanical loading from test fixtures.
• Integrated temperature verification: Equipped with three independently calibrated Pt100 RTD sensors (top/mid/bottom zones) linked to a validated digital controller with NIST-traceable calibration certificate included.
• Compliance-ready design: Built-in mounting interfaces for standard hydrostatic test frames (e.g., ZwickRoell, Tinius Olsen), pressure transducer ports, and specimen suspension rails aligned with ISO 1167 Annex B geometry requirements.

Sample Compatibility & Compliance

The bath accommodates rigid and flexible thermoplastic pipes—including PE, PP-R, PVC-U, PB, and multilayer composites—as well as cross-linked polyethylene (PE-X) and chlorinated polyvinyl chloride (CPVC) specimens. It supports both straight-section and socket-fused test assemblies up to 6 meters in length. All configurations meet CE marking requirements under the EU Pressure Equipment Directive (PED 2014/68/EU) for auxiliary thermal equipment and are compatible with GLP-compliant test environments. Temperature control performance is validated per ISO/IEC 17025:2017 clause 6.4.10 for environmental conditioning systems used in accredited laboratories.

Software & Data Management

While the core unit operates via standalone digital controller, optional Ethernet-enabled firmware (ATSFAAR TC-Link v3.2) provides remote monitoring, real-time temperature logging, and alarm event timestamping. Data export is supported in CSV and XML formats compliant with FDA 21 CFR Part 11 requirements—including electronic signatures, audit trail generation, and user-access-level configuration (admin/operator/viewer). The system supports integration into LIMS platforms via OPC UA protocol, enabling automated test record linkage between bath thermal parameters and pressure decay curves captured by connected hydraulic test instruments.

Applications

• Long-term hydrostatic strength (LTHS) determination per ISO 9080 for PE pipe material classification (e.g., PE100, PE100-RC).
• Design coefficient validation for pressure-rated piping systems under elevated temperature conditions (e.g., 20 °C, 40 °C, 60 °C, 80 °C).
• Accelerated life testing of pipe joints and fusion interfaces under combined thermal and pressure stress.
• Quality assurance screening in production facilities for ISO 4427, ISO 4437, and ASTM F714 certified pipe manufacturing lines.
• Research and development of novel polymer formulations requiring controlled thermal aging prior to mechanical evaluation.

FAQ

What temperature range is supported by the ATSFAAR 200/5000L water bath?
Standard operation spans 5 °C to 95 °C; extended low-temperature variants (–10 °C to 95 °C) are available with integrated refrigeration modules.
Is the bath suitable for testing multi-layer or aluminum-reinforced pipes?
Yes—provided the outer sheath is non-permeable and compatible with prolonged water immersion; thermal mass considerations must be accounted for during soak time calculation per ISO 1167-1 section 7.3.
Does the system include validation documentation for ISO/IEC 17025 accreditation?
Each unit ships with a Factory Acceptance Test (FAT) report, sensor calibration certificates traceable to NIST, and a Temperature Uniformity Mapping Report per ASTM E2203.
Can the bath be integrated with third-party pressure test controllers?
Yes—via dry-contact relay outputs and analog 4–20 mA temperature feedback signals, enabling synchronized start/stop logic with major hydrostatic test platforms.
What maintenance intervals are recommended for long-term reliability?
Quarterly inspection of heater elements and RTD connections; annual full recalibration of temperature control loop and insulation integrity check per manufacturer’s Technical Service Bulletin TS-2023-08.