Ningbo Scientz DC-1030 Low-Temperature Constant-Temperature Circulating Bath (Heating & Cooling)

Overview

The Ningbo Scientz DC-1030 Low-Temperature Constant-Temperature Circulating Bath is a precision-engineered thermal management system designed for laboratory environments requiring stable, programmable temperature control across a broad operational range (−10 °C to +100 °C). It functions as both an internal immersion bath and an external temperature source via dual-mode circulation—enabling direct sample immersion or remote thermal regulation of auxiliary equipment such as rotary evaporator condensers, ultrasonic probe systems, reactor jackets, and semiconductor test fixtures. The unit employs a closed-loop refrigeration circuit based on the vapor-compression cycle, utilizing a Secop (Danfoss Group) hermetic scroll compressor and environmentally compliant R-134a refrigerant (zero ozone depletion potential). Temperature regulation is achieved through a microprocessor-based PID controller with adaptive tuning algorithms, delivering long-term stability of ±0.05 °C under steady-state conditions—a specification validated per ISO 17025 traceable calibration protocols.

Key Features

• High-precision temperature control with ±0.05 °C stability and ±0.1 °C uniformity across the bath volume
• Dual-circulation architecture supporting both internal bath homogenization and external load temperature regulation
• Adjustable external pump flow (0–20 L/min) with pressure capability up to 0.4 bar, compatible with standard 10–16 mm ID silicone or fluoropolymer tubing
• 7-inch tilted capacitive touchscreen interface with intuitive graphical navigation, real-time trend display, and multi-parameter logging (setpoint, actual temp, elapsed time, error status)
• Programmable timer function enabling automatic shutdown upon completion of user-defined duration; supports up to 99 hours 59 minutes
• Power-loss recovery mode: retains all setpoints and operational state; configurable auto-restart or standby-on-power-up behavior
• Integrated safety suite including compressor overheat/overload cutoff, dry-run detection, high-limit thermal cutout, and audible/visual fault alerts
• Low-noise operation (<58 dB(A) at 1 m distance) achieved via vibration-damped mounting and acoustic insulation of the Secop refrigeration module

Sample Compatibility & Compliance

The DC-1030 accommodates aqueous, ethylene glycol/water, silicone oil, and low-viscosity heat-transfer fluids within its 28.6 L working volume (440 × 325 × 200 mm tank). Its stainless steel 304 bath chamber and PTFE-coated internal components ensure chemical resistance against mild acids, bases, and organic solvents. The unit complies with IEC 61010-1:2010 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and meets EMC requirements per EN 61326-1:2013. While not certified for Class I Div 1 hazardous locations, it is suitable for general laboratory use in accordance with GLP and ISO/IEC 17025 quality frameworks. All firmware and control logic are designed to support audit-ready operation in regulated environments—including optional timestamped event logs compatible with 21 CFR Part 11-compliant data management systems when integrated via RS485 or Ethernet (Modbus TCP).

Software & Data Management

The DC-1030 operates autonomously via its embedded controller but supports external monitoring and control via RS485 serial interface (Modbus RTU protocol) or optional Ethernet module (Modbus TCP). Scientz provides Windows-compatible configuration software for remote parameter setting, real-time graphing, and CSV export of temperature/time datasets. Logged data includes timestamped setpoint, measured bath temperature, pump status, compressor duty cycle, and alarm history—retained for ≥30 days in non-volatile memory. Firmware updates are performed via USB flash drive using signed binary packages, ensuring integrity verification prior to installation. No cloud connectivity or proprietary vendor lock-in is implemented; all communication protocols are openly documented.

Applications

• Condenser cooling for rotary evaporation systems requiring precise sub-ambient temperatures
• Temperature stabilization of non-contact ultrasonic disintegrators during cell lysis or nanoparticle dispersion
• Exothermic/endothermic reaction control in jacketed glass reactors and calorimetry setups
• Thermal conditioning of biological samples (e.g., enzyme kinetics, protein folding assays) within physiological and cryogenic ranges
• Calibration of thermistors, RTDs, infrared thermometers, and other temperature sensors per ASTM E74 or ISO/IEC 17025 procedures
• Thermal stress testing of electronic components and semiconductor wafers under controlled ramp-and-soak profiles
• Viscometer and rheometer bath integration where fluid viscosity must remain invariant across shear rate sweeps

FAQ

What is the maximum external loop pressure and flow rate supported by the DC-1030?

The integrated centrifugal pump delivers up to 20 L/min at ≤0.4 bar backpressure—sufficient for most lab-scale external circuits with ≤5 m total tubing length and ≤3 standard fittings.
Can the DC-1030 maintain −10 °C while circulating fluid externally?

Yes, provided ambient temperature remains ≤25 °C and external loop thermal losses are minimized (e.g., insulated tubing, short path length); sustained −10 °C external delivery requires ≤1.5 L/min flow to preserve refrigeration capacity.
Is the bath chamber compatible with silicone oil or ethylene glycol solutions?

Yes—stainless steel 304 construction and PTFE-coated heater elements resist degradation from common heat-transfer fluids; avoid chlorinated solvents or strong oxidizers.
Does the unit support programmable temperature ramps or multi-step profiles?

No—the DC-1030 implements single-setpoint PID control only; complex profiles require external PLC or PC-based sequencing via Modbus interface.
How is temperature calibration verified and maintained?

Users may perform two-point verification using NIST-traceable reference thermometers; factory calibration certificates (as per ISO/IEC 17025) are available upon request with optional on-site recalibration service.