Recirculating Heater 200°C - 5L, 20L, 30L, & 50L - ETL Certified

Our ETL certified RH Series Heaters are compact, air-cooled heating circulators engineered to heat bath fluids electrically and deliver precise, stable temperature control to reactors and process equipment. With PID control, a responsive touch screen, and a quiet DC brushless pump, the RH Series integrates seamlessly into pharmaceutical, chemical, and petrochemical workflows.
Choose from four capacities (10L, 20L, 34L, 48L) with heating power up to 8 kW and flow rates up to 68 L/min. Each unit features durable 304 stainless-steel tanks, rapid heat-up, and simple installation—no facility water loop required.
Designed for reliability and efficiency, the RH Series accelerates batch times, improves thermal uniformity, and reduces operating costs compared to water-cooled alternatives.

Notice: NOT compatible with 208V input (acceptable range 219–253 V, 60 Hz, single phase). Use appropriate heat-transfer fluids rated to the operating temperature; follow your SOPs and local codes.
ETL Certified PID Temperature Control Air-Cooled Design Max 200 °C Touch Screen UI DC Brushless Pump
Performance: Up to 200 °C setpoint with ±1 °C precision for consistent results.
Throughput: 20–68 L/min flow and 8–12 m lift to drive demanding circuits.
Power: 2–8 kW heater modules (model-dependent) for rapid heat-up.
User Manual Intertek UL Certification Intertek CSA Certification
Why choose RH Series Heaters?

ETL-certified safety — third-party tested for electrical and mechanical compliance.
Air-cooled efficiency — no facility water loop required; lower install and operating cost.
Accurate PID control — touchscreen interface with stable ±1 °C regulation to 200 °C.
High flow & lift — DC brushless pump delivers 20–68 L/min and 8–12 m head for reactors and jackets.
Built to last — 304 stainless tank, robust chassis, and serviceable components.
Technical Specifications
Model
RH5L-ETL
RH20L-ETL
RH30L-ETL
RH50L-ETL
Operating Ambient Temperature
5–35 °C / 41–95 °F
5–35 °C / 41–95 °F
5–35 °C / 41–95 °F
5–35 °C / 41–95 °F
Inner Tank Material
304 Stainless Steel
304 Stainless Steel
304 Stainless Steel
304 Stainless Steel
Controller
Touch Screen
Touch Screen
Touch Screen
Touch Screen
Oil Pump Type / Power
DC Brushless · 60 W
DC Brushless · 100 W
DC Brushless · 150 W
DC Brushless · 180 W
Power (V/Hz)
220 V, 60 Hz, Single Phase
220 V, 60 Hz, Single Phase
220 V, 60 Hz, Single Phase
220 V, 60 Hz, Single Phase
Flow Setting
Knob Setting
Knob Setting
Knob Setting
Knob Setting
Current
220 V / 10.0 A
220 V / 14.2 A
220 V / 23.9 A
220 V / 34.6 A
Flow
20 L/min
30 L/min
50 L/min
68 L/min
Temp Range
RT–200 °C
RT–200 °C
RT–200 °C
RT–200 °C
Temp Precision
±1 °C
±1 °C
±1 °C
±1 °C
Temperature Control
PID Controller
PID Controller
PID Controller
PID Controller
Heating Power
2 kW
3 kW
5 kW
8 kW
Lift
8–12 m
8–12 m
8–12 m
8–12 m
Inlet and Outlet
1/2" NPT
1/2" NPT
1/2" NPT
3/4" NPT
Tank Capacity
10 L / 2.64 gal
20 L / 5.28 gal
34 L / 8.98 gal
48 L / 12.68 gal
Tank Size (L×W×H)
8.6" × 7.1" × 10.7"
11" × 10.7" × 10.7"
15" × 13" × 10.7"
17" × 13" × 13.5"
Pharmaceutical Chemical Processing Pilot & Scale-Up Labs Academic & Research
FAQ

Is the RH Series compatible with 208V power?

No. RH Series Heaters require 220 V single-phase power within 219–253 V. They are not compatible with 208 V.
What temperature range and accuracy can I expect?

The RH Series operates from room temperature up to 200 °C with PID control and ±1 °C precision (ambient-dependent).
Does it require facility water for cooling?

No. The RH Series is air-cooled , simplifying installation and reducing water usage and maintenance.
What are the pump specs for circulation?

DC brushless pump with model-dependent output: 20/30/50/68 L/min and 8–12 m lift to reliably drive jackets and coils.
Which heat-transfer fluid should I use?

Use fluids rated to your target temperature and compatible with your materials and SOPs (e.g., silicone or synthetic thermal oils). We Recommend Caldera 7
Specifications
Power Requirements:
220V 60Hz Single Phase
Controller:
Touch Screen PID
Temperature Range:
RT-200℃
Certifications:
ETL Certified to UL & CSA Standards