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Description
RH Series Recirculating Lab Heaters – ETL Certified | USA Lab
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.
Why buy from USA Lab
Expert Support
Engineers & technicians on staff.
Engineers & technicians on staff.
Quality First
Tested and trusted products.
Tested and trusted products.
Fast Fulfillment
Nationwide 1-2 day shipping.
Nationwide 1-2 day shipping.
Warranty & Parts
US-based service & spares.
US-based service & spares.
Resources & Downloads
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.
Talk to an expert
Get sizing help, SOP guidance, and integration tips for your line.
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" |
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Keep purchasing streamlined and compliant.
Custom Solutions
Tailored tanks, skids, and integration help.
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We’ll help spec the right system for your throughput.
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
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