Thermostatic test chamber F-TH series

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Overview
Fast change rate test chambers simulate rapid temperature transitions to accelerate thermal stress testing and early detection of defects. Designed with enhanced airflow and larger compressors, the F-TH Series delivers controlled change rates up to 20 °C/min (linear) and peak ramps up to 30 °C/min (nonlinear). Available as reach-in models and larger configurations, with optional humidity control and a 3 kW heating load.

Product Line & Models
F-TH Series — Models: F-TH-150, F-TH-225, F-TH-408, F-TH-800 (options A~F configurable). Internal volumes: 150 L, 225 L, 408 L, 800 L.

Key Description
Fast Temperature Change Rate Test Chamber (F-TH Series). Supports rapid linear and nonlinear ramps, optional humidity, CE certification and 12-month warranty. Built-to-order manufacturing tailored to test requirements.

Control Modes

• Linear Mode: 3–20 °C/min with full linear PID control for constant slope, repeatable ramps and compliance testing.
• Nonlinear Mode: 3–30 °C/min peak with variable ramp profile for accelerated stress screening (e.g., HALT-style); humidity function can be combined.

Features & What This System Delivers

• Speed: Linear ramps up to 20 °C/min to compress long tests into shorter cycles while maintaining profile fidelity.
• Coverage: Temperature range with optional humidity control (20%–98% R.H.; extended 10% or 5% available with dehumidifier).
• Accuracy: Control accuracy ±0.5 °C / ±2.5% R.H.; indication resolution 0.1 °C / 0.1% R.H.
• Flexibility: Four standard internal volumes and configurable option levels (A~F).
• Heating load: 3 kW (standard configuration).

Built-in / Key Functions

• BTHC temperature & humidity control with PID + SSR and auto-calculation.
• Programmable multi-segment cycling: up to 100 programs, 100 segments each; up to 999 cycles per program.
• Power-off memory with 5-year backup and automatic resume after power loss.
• Imported LCD display showing set point, actual value and time simultaneously.
• Dual refrigeration loop with imported fully-closed compressors for fast cooling; air-cooled or water-cooled options.
• DIN PT-100Ω industrial temperature sensor standard.
• RS-232 / RS-485 communication, timer relay outputs, interface lock and alarm functions.

Standards Supported
IEC 62133-2017, UL 1642, UN 38.3, IEC 60068-2-14, GB/T 2423.22, IEC 60068-2-38, MIL-STD-810, ISO 16750-4 and similar rapid temperature/humidity cycling standards.

Applications
Quality inspection and reliability testing for electronics & PCBs, appliances, communications equipment, instruments & meters, automotive components, batteries & energy storage, plastics & rubber, metals & alloys, food & chemical, building materials, medical devices, aerospace & defense.

Measured Performance / Test Data
Temperature and humidity profiles are recorded during rapid-cycling tests to demonstrate ramp rate performance, stability and repeatability across the selected profile.

Safety & Protection
Multi-layer protection includes fuse-free switch, compressor overload protection, high/low pressure refrigerant protection, over-humidity and over-temperature protection, fuses, electronic alarms, fault warning system and water shortage warning.

Technical Specifications

• Series: F-TH Series (F-TH-150, F-TH-225, F-TH-408, F-TH-800)
• Internal Dimension W×H×D (mm): F-TH-150: 500 × 600 × 500; F-TH-225: 600 × 750 × 500; F-TH-408: 600 × 850 × 800; F-TH-800: 1000 × 1000 × 800
• External Dimension W×H×D (mm): F-TH-150: 1100 × 1750 × 1600; F-TH-225: 1200 × 1800 × 1700; F-TH-408: 1250 × 1900 × 1900; F-TH-800: 1600 × 2050 × 2150
• Temperature Range: −70 °C to +150 °C
• Range of Fast Temperature Change: −45 °C to +85 °C
• Maximum Ramp Rate: Up to 20 °C/min under full linear control; nonlinear peaks up to 30 °C/min
• Rising / Falling Velocity: Linear control 3–20 °C/min adjustable; Nonlinear control 3–30 °C/min adjustable
• Humidity Range (Optional): 20%–98% R.H. (10%–98% or 5%–98% available with dehumidifier)
• Indication Resolution: 0.1 °C / 0.1% R.H.
• Distribution Uniformity: ±2.0 °C / ±3.0% R.H.
• Control Accuracy: ±0.5 °C / ±2.5% R.H.
• Internal Material: Inner box SUS 304 stainless steel
• External Material: Stainless steel or cold-rolled steel with paint coating
• Insulation Material: High-temperature resistant, high-density formate chlorine / ethyl acetate foam insulation
• Cooling System: Water-cooled / single-stage compressor; refrigerants R23 / R404A
• Compressor Brands: Tecumseh (France), Bitzer (Germany)
• Protection Devices: Fuse-free switch, compressor overload protection, high/low pressure coolant protection, over-humidity & over-temperature protection, fuses, fault warning system, water shortage warning
• Optional Accessories: Inner door with operation hole, water purifier, dehumidifier, recorder
• Communication: RS-232 or RS-485
• Power: AC 380 V 3-phase 5-wire, 50/60 Hz
• Weight (Approx.): F-TH-150: 250 kg; F-TH-225: 350 kg; F-TH-408: 450 kg; F-TH-800: 600 kg
• Typical Lead Time: Built to order; typically 30–40 working days depending on configuration