Move heat into or out of a suitable external circuit with the IKA HRC 2 GREEN control. Its −30°C to +100°C working range, adjustable pressure/suction pump and removable WiCo controller bring temperature control to compatible reactor jackets and heat exchangers without requiring a computer for local operation.

This listing is US 115 V catalog 0020128747. The US technical rating is 1,200 W heating output. Cooling is rated at 620 W at +20°C, with lower capacity at colder temperatures. Use the duty at your actual target, not the largest number, to choose the instrument.

Plan the complete circuit. Temperature-rated hoses and suitable thermofluid are separate selections. External PT100.30 probe inclusion needs confirmation because the manufacturer’s current sources differ. No reactor, vessel or universal connection kit is included.

Your process needs both heating and cooling

A useful format for methods that need to add heat, remove process heat or move through temperature stages. Specify the target range and heat load before selecting a circulation thermostat.

You have an external heat-transfer circuit

Consider compatible reactor jackets, bioreactor temperature circuits and heat exchangers. The pressure, flow, wetted materials and thermal limits of the complete circuit must be checked; model names alone do not establish a fit.

You want a repeatable stand-alone sequence

WiCo provides local controls plus 10 programmable temperature ramps with up to 10 steps each. Ramp settings organize a method but do not validate it or guarantee the process temperature follows every step under load.

You can provide the right installation conditions

Allow ventilation, safe fluid handling and the manual’s room-size requirements for flammable R290 refrigerant. This is a laboratory circulator, not a refrigerated sample chamber or an explosion-proof device.

WiCo and connection hardware, with the circuit specified separately

• HRC 2 GREEN control station with WiCo wireless controller.
• Power cables; WH 10 WiCo holder and OS 1.0 WiCo power supply.
• Two DN 8 and two DN 12 hose olives, per the English manual.
• Safety-circuit screwdriver and overflow-connector plastic cap.
• USB micro A–micro B and USB A–micro B cables, user guide and warranty card, per the manual.

External probe: confirm before relying on it. The English manual lists a Pt 100.30 in the delivery scope, while the current product description identifies PT100.30 with LEMO connector as an accessory. We do not promise that probe as supplied with US order 0020128747 until its current packing scope is confirmed.

Separate selections: temperature-rated circulation hoses and insulation, appropriate thermofluid, the external reactor or heat exchanger, and application-specific fittings. An RS-232 cable and labworldsoft software license are not listed as supplied. Hose olives are adapters, not complete connecting hoses.

The lowest setpoint is not the highest cooling duty

The US data lists 620 W at +20°C, 600 W at +10°C, 480 W at 0°C, 350 W at −10°C, 200 W at −20°C and 80 W at −30°C. A process that generates substantial heat at a low target may need a larger system even when the target lies inside this model’s temperature range.

Include process heat, ambient heat gain, tubing losses and the required pull-down time in the sizing discussion. A four-liter internal bath does not mean the instrument can cool any four-liter sample at any rate.

For US 115 V operation, the manual and US technical table agree on 1,200 W heating output and 1,500 W maximum electrical input. General family marketing figures are not substituted for this electrical version’s rating.

Adjustable circulation, without combining incompatible maxima

The speed-controlled PEEK pressure/suction pump adjusts from 2,000 to 4,000 rpm. The maximum flow is 21 L/min at zero back pressure; maximum pressure is 0.5 bar at zero discharge flow. The suction reference is 0.25 bar at zero flow. Those are different operating points, not simultaneous performance.

Pump connections are M16×1. The manual lists DN 8 and DN 12 hose olives, but hoses need their own temperature, pressure and chemical-compatibility checks. Match the connected equipment’s allowable pressure and the actual flow resistance before commissioning.

The fill range is 1.4–4.0 L. IKA describes up to 2.5 L of thermofluid available for an external circuit without refilling; that is a fluid-management reference, not a 2.5 L sample-capacity or universal reactor-size limit.

Choose fluid for the entire target range, including viscosity at the coldest temperature. The stated maximum is 50 mm²/s. Do not assume water is suitable down to −30°C, or that one fluid can cover every possible operating condition.

Put feedback where the method needs it

Internal control regulates the bath. With a correctly specified external Pt 100 sensor connected and configured, external control can use the process measurement instead. Confirm the PT100.30 LEMO probe supply, location and mounting for the application rather than treating a sensor socket as an included probe.

The technical references distinguish temperature stability from absolute accuracy: internal stability is ±0.05 K at +70°C and ±0.1 K at −10°C under DIN 12876 reference conditions. Listed internal/external absolute measurement accuracy is ±0.5 K, adjustable by calibration. These figures are not interchangeable.

WiCo offers timer/counter functions, setpoint-reached signaling and programmable ramps. The manual gives a building-dependent wireless distance up to 15 m. Review the communication-loss timeout and safe-temperature/safe-speed settings; loss of the controller link is not a universal automatic shutdown.

Start with the application, not the front-panel maximum

• Define target temperature, actual heat load and desired temperature-change time.
• Confirm the external system’s pressure, flow, wetted materials and thermal limits.
• Specify hoses, insulation and thermofluid; confirm whether the external PT100.30 must be ordered.
• Install, settle, fill, vent and leak-check exactly as the manual directs. Never run without sufficient fluid.
• Set appropriate fluid/safety limits and control mode, then verify the method under the actual load.

The manual requires at least 20 cm free space at the front and rear, a minimum 10 m³ room and adequate ventilation. After positioning, wait at least one hour before starting the refrigeration system. Body dimensions do not include all operating clearances.

Connect a separately configured PC workflow

RS-232, Micro-USB and the multifunction interface support integration described in the manual. Optional labworldsoft can support control and data collection. No software license, regulatory recordkeeping compliance or validated automation is implied.

Keep routine fluid handling accessible

A filling opening, digital level indication and front drain help manage thermofluid. The front filter is accessible for cleaning. Isolate power and follow the manual before draining, maintenance or accessory changes.

Treat R290 and hot/cold fluid appropriately

R290 is a natural, flammable refrigerant. Do not damage or open its sealed circuit; manufacturer service is required. Use the required ventilation, room size and process safeguards. DIN class III (FL) does not mean explosion-proof operation.