JULABO SE-Z Immersion Heating Circulating Controller (Bridge-Mounted)

Overview

The JULABO SE-Z is a precision-engineered bridge-mounted immersion heating circulating controller designed for stable, high-accuracy thermal management of external liquid baths—particularly water, silicone oil, or heat-transfer fluids—across demanding laboratory and pilot-scale applications. Operating on the principle of forced convection via an integrated high-efficiency circulation pump, the SE-Z delivers consistent thermal energy transfer while maintaining tight temperature control over extended periods. Its core architecture supports both internal recirculation (within a single bath) and external loop configurations (e.g., jacketed reactors, calorimeters, or custom thermal manifolds), enabling flexible integration into complex experimental setups. With a maximum operating temperature of +300 °C and stability of ±0.01 °C at setpoint, the SE-Z meets stringent requirements for kinetic studies, polymer processing, material testing, and calibration traceability in regulated environments.

Key Features

• Bridge-mount design with adjustable stainless-steel support frame—compatible with standard bath dimensions and configurable for variable immersion depth (12–19 cm).
• VFD (Vacuum Fluorescent Display) screen offering simultaneous real-time readout of setpoint, actual bath temperature, pump status, and alarm conditions—enhanced legibility under ambient lab lighting.
• ICC (Intelligent Control Circuit) temperature regulation algorithm with adaptive auto-tuning—dynamically optimizes PID parameters based on thermal load, fluid viscosity, and system inertia.
• ATC3 three-point calibration routine for external Pt100 sensors—ensures traceable accuracy across the full operational range per ISO/IEC 17025-relevant practices.
• Integrated cooling coil—enables passive heat dissipation when connected to tap water or an external chiller; extends functional utility toward sub-ambient stabilization when paired with compatible refrigerated circulators.
• SmartPump™ technology—automatically modulates motor output in response to changes in fluid viscosity or backpressure, preserving flow consistency and minimizing thermal overshoot during ramp phases.
• Dual safety architecture: hardware-based overtemperature cutoff (mechanical rotary dial preset) plus software-monitored low-fluid-level detection with audible/visual alert and automatic heater deactivation.
• RS232 serial interface as standard—supports bidirectional communication with LabVIEW, MATLAB, or custom SCADA systems for time-stamped data logging and remote parameter adjustment.

Sample Compatibility & Compliance

The SE-Z is engineered for use with non-corrosive, non-flammable heat-transfer media—including deionized water, glycol-water mixtures, silicone oils (e.g., DC200 series), and mineral oils—within sealed or open-bath configurations up to 100 L. All wetted components—including pump housing, impeller, and sensor ports—are constructed from electropolished AISI 316 stainless steel, ensuring long-term resistance to thermal degradation and chemical exposure. The unit complies fully with DIN 12876-1 Class III (FL) safety classification for laboratory heating equipment, covering electrical insulation, mechanical stability, and fail-safe thermal protection. It also satisfies essential requirements of IEC 61010-1 for measurement/control laboratory apparatus and carries CE marking for conformity with EU Machinery and EMC directives.

Software & Data Management

While the SE-Z operates autonomously via its embedded firmware, its RS232 port enables seamless integration into centralized lab informatics infrastructure. When connected to a host PC running JULABO’s optional LabSoft software—or third-party platforms supporting ASCII command protocols—the device supports automated sequence execution (e.g., multi-step ramps, holds, and cooldowns), timestamped CSV export of temperature/pump data, and audit-trail generation compliant with GLP and FDA 21 CFR Part 11 principles (when deployed with appropriate system validation and user access controls). Optional analog I/O modules (0–10 V or 4–20 mA) allow analog feedback integration into PLC-based process control networks, supporting closed-loop coordination with auxiliary devices such as solenoid valves or chillers.

Applications

• Calibration of reference thermometers and RTDs in metrology labs requiring NIST-traceable stability.
• Thermal conditioning of viscometers, rheometers, and density meters where bath uniformity directly impacts measurement repeatability.
• Accelerated aging tests per ASTM D573 and ISO 188—maintaining precise elevated temperatures in oil baths for rubber and elastomer evaluation.
• Reaction temperature control in glass-jacketed reactors (up to 5 L volume) using external circulation loops.
• Stabilization of optical benches and interferometric setups sensitive to thermal drift.
• Pre-conditioning of samples prior to mechanical testing (e.g., tensile, impact) per ASTM E1039 and ISO 6892-2 protocols.

FAQ

Does the SE-Z support external cooling integration?
Yes—the built-in cooling coil accepts standard 8 mm or 12 mm ID tubing and can be plumbed to a facility water supply or external refrigerated circulator for active heat rejection.
Can the SE-Z control temperature in an external system without a bath?
Yes—via its dedicated external Pt100 input, the controller regulates based on sensor feedback from reactors, jackets, or custom manifolds, independent of internal bath temperature.
Is firmware upgrade capability available?
Firmware updates are performed via RS232 using JULABO-provided utilities and require authorized service access; version history and release notes are documented in the technical manual.
What maintenance intervals are recommended?
Annual verification of temperature accuracy (using certified reference standards) and inspection of pump seals and cooling coil integrity are advised per DIN 12876-1 maintenance guidelines.
How does the SmartPump™ respond to high-viscosity fluids like silicone oil at 250 °C?
The pump dynamically increases torque output within its rated pressure range (0.4–0.7 bar) to sustain target flow rates—verified across ISO VG 100 to VG 1000 oils in application testing.