Ningbo Scientz DCW-1015 Precision Refrigerated & Heated Circulating Bath

Overview

The Ningbo Scientz DCW-1015 is a high-stability, dual-function refrigerated and heated circulating bath engineered for precision temperature control in demanding laboratory and industrial applications. Utilizing a closed-loop thermodynamic system based on vapor-compression refrigeration combined with resistive heating, the DCW-1015 maintains a uniform, controllable thermal environment within its stainless-steel bath chamber (280 × 250 × 220 mm). Its operational range spans from −10 °C to +100 °C, with exceptional short-term stability of ±0.05 °C—achieved via a microprocessor-based PID controller integrating real-time feedback from a calibrated Pt100 sensor. The unit supports both internal circulation (for bath homogeneity) and external circulation (for remote temperature conditioning of ancillary equipment), making it suitable not only as a standalone constant-temperature platform but also as an auxiliary thermal source for systems requiring stable cold or hot fluid delivery.

Key Features

• High-efficiency Secop (Danfoss Group) hermetic scroll compressor delivering low acoustic emission (<52 dB(A)) and extended service life under continuous operation
• R-134a refrigerant compliant with Montreal Protocol requirements—zero ozone depletion potential (ODP = 0) and moderate global warming potential (GWP = 1430)
• 7-inch capacitive touchscreen with ergonomic tilt design, supporting multi-point calibration, real-time trend display, and intuitive parameter navigation
• Programmable timer function with auto-shutdown upon completion; user-configurable power-on behavior (retain settings / default standby / auto-start)
• Dual-mode circulation system: internal recirculation ensures bath uniformity; external mode enables connection to rotary evaporator condensers, ultrasonic probe coolers, reactor jackets, or semiconductor test fixtures
• Adjustable pump flow rate (0–15 L/min) with pressure-regulated output (max 0.2 MPa), compatible with tubing ID 6–10 mm
• Comprehensive safety architecture including compressor overheat/overload protection, dry-run detection, and thermal cut-off at 110 °C

Sample Compatibility & Compliance

The DCW-1015 is designed for use with aqueous solutions, silicone oils (up to 100 cSt), and low-viscosity organic heat-transfer fluids compatible with 304 stainless steel and EPDM seals. It meets CE marking requirements per Directive 2014/30/EU (EMC) and 2014/35/EU (LVD), and conforms to IEC 61000-6-3 (emissions) and IEC 61000-6-2 (immunity). While not certified for medical device manufacturing environments, its temperature stability and audit-ready parameter logging support GLP-aligned workflows in QC laboratories. When integrated into validated systems (e.g., USP environmental monitoring or ASTM E2912-22 thermal validation protocols), the DCW-1015 serves as a traceable thermal reference source.

Software & Data Management

The onboard firmware supports USB data export (CSV format) of time-stamped temperature logs, setpoint history, and alarm events. Optional RS485 Modbus RTU interface enables integration into SCADA or LIMS platforms for centralized monitoring. All parameter changes—including setpoint, ramp rate, hold time, and pump speed—are timestamped and stored in non-volatile memory. Though not FDA 21 CFR Part 11 compliant out-of-the-box, the device supports ALCOA+ principles through manual record retention and configurable audit trails when used with external validation software.

Applications

• Condenser cooling for rotary evaporation systems requiring sub-ambient temperatures (e.g., solvent recovery below 20 °C)
• Temperature stabilization of non-contact ultrasonic disruptors during cell lysis or nanoparticle dispersion
• Exothermic/endothermic reaction control in jacketed glass reactors (±0.1 °C setpoint accuracy maintained over 8-hr runs)
• Thermal conditioning of biological samples during electrophoresis, enzyme kinetics, or cryopreservation staging
• Calibration of thermocouples, RTDs, and infrared pyrometers against NIST-traceable references
• Environmental stress testing of electronic components and PCB assemblies across defined thermal profiles

FAQ

What is the maximum external loop pressure the DCW-1015 can sustain?
The integrated circulation pump delivers up to 0.2 MPa (2 bar) static pressure at zero flow; pressure decreases linearly with increasing flow rate per manufacturer’s published pump curve.
Can the DCW-1015 operate continuously at −10 °C ambient temperature?
Yes—the unit is rated for continuous operation in ambient environments between 10 °C and 35 °C; performance at lower ambient temperatures requires external enclosure insulation and dew-point management.
Is the bath chamber drainable for fluid replacement?
Yes—a front-mounted quick-release drain valve allows full evacuation without disassembly; recommended for annual maintenance or fluid change intervals.
Does the device support ramp-and-soak temperature programming?
No—DCW-1015 implements single-setpoint PID control only; multi-step profiles require external programmable logic controllers or third-party software integration via Modbus.
What materials are in contact with the heat-transfer fluid?
Bath chamber: 304 stainless steel; pump housing: PPS + ceramic impeller; tubing ports: brass with EPDM O-rings; all wetted surfaces comply with ISO 10993-5 cytotoxicity standards.