Taitec SX-10N & SH-10N Immersion-Type Constant Temperature Circulators

Overview

The Taitec SX-10N and SH-10N are compact, immersion-type constant temperature circulators engineered for precise thermal control in laboratory applications requiring stable, reproducible heating environments. Unlike traditional bath systems with integrated reservoirs, these units operate as modular controllers designed for integration with external vessels—including polyethylene C-type baths (standard), stainless-steel insulated baths (optional), silicone oil baths, or custom containers—enabling flexible experimental configurations while maintaining rigorous thermal performance. The SX-10N is optimized for aqueous applications up to +105°C, whereas the SH-10N extends operational capability to +180°C using compatible heat-transfer media such as silicone oil MA100, supported by enhanced thermal insulation and steam-resistant construction. Both models employ platinum resistance (Pt100) sensor-based feedback and advanced PID algorithms to achieve high-resolution temperature regulation, with stability specifications verified under standardized test conditions (e.g., 6 L water load, ambient +25°C, no external thermal load). Their design emphasizes safety-critical engineering: dry-run prevention mechanisms, dual-stage electrical protection, real-time fault diagnostics, and audible alarm outputs ensure compliance with GLP-aligned operational practices.

Key Features

• Two-tier temperature control architecture: SX-10N supports RT+5°C to +105°C; SH-10N extends to RT+5°C to +180°C with appropriate heat-transfer fluid and optional accessories.
• Pt100 platinum sensor with digital PID control delivers ±0.05°C stability (SX-10N) and ±0.1°C (SH-10N) under defined reference conditions.
• Jet-type internal circulation system with continuously adjustable flow knob enables fine-tuned mixing intensity—critical for minimizing thermal stratification in small-volume or low-mass samples.
• Triple-mode timer functionality: Set-time alert (audible only), automatic shutdown (OFF timer), and programmable temperature-transition timing for multi-step protocols (e.g., shift from +37°C incubation to +4°C storage).
• One-slot temperature memory allows rapid recall of frequently used setpoints without re-entry.
• Comprehensive safety suite includes float-type (SX-10N) or flow-sensing (SH-10N) dry-run detection, over/under-temperature alarms, low-level sensing, heater guard housing, circuit breakers (10A/15A), and redundant fusing (2A).
• RoHS-compliant construction with non-volatile memory error monitoring and self-diagnostic reporting for audit-ready operation.

Sample Compatibility & Compliance

These circulators accommodate a wide range of sample formats—including microcentrifuge tubes (with included float), PCR strips, cuvettes, and reaction vials—when used with compatible external vessels. The SX-10N’s standard polyethylene C-bath is rated for ≤+70°C; above this threshold, the optional insulated stainless-steel bath (F-series) and PF-C cover are required to maintain accuracy and structural integrity. For SH-10N operation at >+70°C, silicone oil MA100 (viscosity-optimized) and roof-type lid (sold separately) are mandatory to suppress vaporization and ensure thermal uniformity. Both units meet RoHS Directive 2011/65/EU requirements. While not inherently refrigerated, their -20°C to +180°C *setpoint range* supports sub-ambient operation when paired with third-party immersion coolers and certified antifreeze solutions (e.g., for +7°C and below). No internal cooling mechanism is present; all sub-ambient functionality relies on external thermal management.

Software & Data Management

The SX-10N and SH-10N operate via embedded firmware with no onboard data logging or network interface. However, analog output compatibility is provided through the optional AOC-2 recording output cable, which delivers relay-contact signals during safety event activation (e.g., dry-run, over-temperature, sensor fault)—enabling connection to external chart recorders, PLCs, or SCADA systems for traceable process documentation. All alarms generate audible beeps and on-screen status flags, supporting 21 CFR Part 11–aligned manual log entries when combined with lab notebook SOPs. Firmware retains calibration history and error logs in non-volatile memory, facilitating internal QA reviews and preventive maintenance scheduling per ISO/IEC 17025 guidelines.

Applications

• Enzymatic assays and cell culture incubation requiring tightly controlled thermal profiles across physiological (e.g., +37°C) and elevated (e.g., +65°C, +95°C) ranges.
• Serum inactivation, media pre-warming, and hybridization protocols where temporal precision and thermal repeatability are critical.
• High-temperature kinetic studies using silicone oil baths, including polymer melt characterization and accelerated stability testing.
• Multi-step thermal protocols involving timed transitions between setpoints—enabled by the built-in temperature-change timer and OFF timer.
• QC/QA workflows in pharmaceutical and biotech labs where equipment validation (IQ/OQ/PQ) benefits from deterministic thermal response and documented safety interlocks.

FAQ

Do the SX-10N and SH-10N include an integrated water bath?
No. These are immersion-type controllers intended for use with external vessels. A polyethylene C-type bath is included, but it is not part of the main unit chassis.
Can either model cool below ambient temperature?
Neither unit contains a compressor or Peltier element. Sub-ambient operation requires pairing with an external immersion cooler and appropriate heat-transfer fluid (e.g., antifreeze solution for temperatures ≤+7°C).
What is the maximum recommended volume for optimal temperature stability?
Stability specifications (±0.05°C / ±0.1°C) were validated using a 6 L water load. Performance may vary with smaller volumes or higher thermal mass loads; flow adjustment and vessel insulation are recommended to mitigate drift.
Is the SH-10N suitable for use with water at +180°C?
No. Water cannot be used above its boiling point at atmospheric pressure. The SH-10N achieves +180°C only with silicone oil MA100 or equivalent high-boiling-point media, along with the insulated F-bath and roof-type lid.
Does the unit support remote control or computer interfacing?
No native USB, Ethernet, or RS-232 interface is provided. Process monitoring and alarm signaling are limited to the optional AOC-2 contact-output cable for integration with external recording devices.