Memmert UF160plus Universal Oven, heating and drying oven with forced air circulation and TwinDISPLAY, 161 litres, up to 300 °C

According to Test-Batch’s experience, the Memmert UF160 universal oven is one of the most sought-after heating and drying ovens in the LT Laborhandel range; with the UF160plus, the same 161-litre model is also available with TwinDISPLAY: two redundant Pt100 sensors, HeatBALANCE and AutoSAFETY for processes where a sensor failure is not an option. The temperature range extends from 20 to 300 °C, whilst up to 8 shelves and a maximum total load capacity of 210 kg provide ample capacity for routine laboratory operations.

Forced-air circulation with redundant temperature measurement

The UF160plus’s air turbine, which can be controlled electronically in 10 per cent increments, actively distributes heat throughout the chamber and achieves an operating temperature range from at least 10 °C above room temperature up to 300 °C. Two DIN Class A Pt100 sensors in a 4-wire configuration monitor each other; if one fails, the second automatically takes over. The setting accuracy is 0.1 °C up to 99.9 °C and 0.5 °C from 100 °C onwards. Preheated fresh air is introduced via an electronically adjustable exhaust air damper; the exhaust air outlet with throttle valve can also be controlled electronically.

ControlCOCKPIT TwinDISPLAY: HeatBALANCE and AutoSAFETY

The UF160plus is controlled via the ControlCOCKPIT TwinDISPLAY, which features two high-resolution TFT colour graphic displays. The HeatBALANCE function allows fine-tuning of the heat output distribution between the upper and lower heating groups from –50 to +50 per cent, for example to compensate for temperature differences caused by unevenly distributed loads. AutoSAFETY also monitors over- and under-temperature conditions, automatically tracks the setpoint within a freely selectable tolerance range and triggers visual and audible alarms in the event of a deviation. Programmes are programmed, managed and transferred via the Ethernet interface or USB port using the AtmoCONTROL software. A programmable door lock and door-open detection can be added as optional extras.

Capacity and dimensions of the Memmert UF160plus universal cabinet

The internal dimensions are 560 x 720 x 400 mm; the external dimensions of the housing are 745 x 1,104 x 584 mm, and the net weight is approximately 96 kg, identical to the base model UF160. Two electropolished stainless steel grids are included as standard; up to eight shelves can be fitted in total. The maximum total load is 210 kg, with a maximum of 20 kg per shelf. The interior consists of easy-to-clean stainless steel, reinforced by deep-drawn ribbing, with protected, integrated 4-sided all-round heating; the housing is made of textured stainless steel with a fully galvanised steel sheet rear panel. The UF160plus can be connected either to 230 V (approx. 3,200 W) or 115 V (approx. 1,800 W), in both cases at 50/60 Hz.

Selection guide: choosing the right size from the UF range

The eight-tier size range of the Memmert UF range with forced air circulation, each also available with TwinDISPLAY, offers internal volumes ranging from 53 to 1,060 litres. When selecting the appropriate size, the key factors, in addition to the volume, are the footprint and the number of shelves required.

The UF160plus is the obvious choice when the Memmert UF110plus universal cabinet (108 litres, 5 shelves instead of 8) reaches its capacity limit, but a significantly larger footprint is not yet available. Those requiring more volume with a larger footprint will find it in the Memmert UF260plus universal cabinet (256 litres). All sizes in the range can be found in the LT Laborhandel range of climate cabinets and incubators.

Differences: TwinDISPLAY versus SingleDISPLAY, and natural convection

Those who can do without sensor redundancy can save money with the identically constructed Memmert UF160 universal cabinet in the basic model with SingleDISPLAY, which, according to sales figures to date, is the most sought-after model in the series. For samples sensitive to dust or air movement that cannot tolerate active air circulation, the Memmert UN160plus universal cabinet offers the same housing with natural convection instead of an air turbine, whilst still featuring TwinDISPLAY. For those requiring less internal volume, the Memmert UF110plus universal cabinet offers the more compact TwinDISPLAY model with the same footprint.

Safety in accordance with DIN 12880, enhanced by AutoSAFETY

In addition to adjustable electronic temperature monitoring and AutoSAFETY, the UF160plus features a mechanical temperature limiter of protection class 1 in accordance with DIN 12880, which switches off the heater at approximately 20 °C above the maximum cabinet temperature. The display also allows selection of either a temperature selector monitor (Protection Class 3.1) or a temperature selector limiter (Protection Class 2). An integrated self-diagnostic system assists with fault-finding, and three freely selectable temperature values can be calibrated. The unit bears CE and EAC markings as well as a UL mark.

Installation, operation and disposal

For operation, a minimum clearance of 15 cm from the wall and a maximum clearance of 20 cm from the ceiling must be maintained; a minimum of 5 cm is sufficient on the sides relative to the wall or an adjacent unit. Installation is permitted at altitudes of up to 2,000 m above sea level at an ambient temperature of 5 °C to 40 °C and a relative humidity of no more than 80 per cent, non-condensing. Electrically, the UF160plus is rated for overvoltage category II and pollution degree 2; it must only be transported in an upright position. The interior, made of easy-to-clean stainless steel, can be cleaned using standard laboratory cleaning products. As an electrical appliance, the UF160plus is subject to the Electrical and Electronic Equipment Act at the end of its service life and must not be disposed of with household waste; see Regulatory Information below.

Typical applications

With an internal volume of 161 litres and redundant sensor technology, the Memmert UF160plus universal oven is suitable for heat treatment processes in laboratories and industry with heightened requirements for process reliability.

• Unattended drying of medium to large batches overnight or at the weekend
• Tempering, ageing and baking of material samples subject to documentation requirements
• Testing and curing in quality assurance with heightened safety requirements
• Material testing in industrial manufacturing
• Replacement or addition to a SingleDISPLAY model if processes are to run unattended in future
• Heat treatment processes in science and research with heightened documentation requirements

Investment rationale: when TwinDISPLAY is worthwhile

The UF160plus is supplied with 2 electropolished stainless steel grids; the cabinet is designed to accommodate up to 8 shelves. TwinDISPLAY is particularly worthwhile where processes run unattended overnight or at weekends and a sensor failure would jeopardise the batch, or where there is a documentation requirement supported by AutoSAFETY protocols. Those who do not require this redundancy can save money by opting for the basic model of the Memmert UF160 universal cabinet, which is of identical construction. A fully transparent glass door is available as an option for visual inspection without opening the door, as is a programmable door lock with door-open detection. A USB-to-Ethernet adapter and AtmoCONTROL software licences are available for continuous logging. For pharmaceutical or standard-compliant applications, we arrange calibration, IQ/OQ/PQ and maintenance services, including those accredited by DAkkS.

Frequently asked questions before purchase

What are the specific benefits of the second Pt100 sensor?
If one of the two sensors fails, the second one automatically takes over, meaning that an ongoing drying or tempering process does not have to be interrupted.

How many samples can the UF160plus hold at once?
Two wire racks are included as standard; up to eight trays, each with a maximum load of 20 kg, are possible, giving a total load capacity of up to 210 kg.

Is TwinDISPLAY worth it for routine operation?
For simple drying tasks during the day, SingleDISPLAY is usually sufficient. For unattended overnight runs, the UF160plus is the safer choice compared to the Memmert UF160 universal oven.

What is the accuracy of the temperature control?
0.1 °C to 99.9 °C; from 100 °C, 0.5 °C, in each case determined via the two redundant DIN Class A Pt100 sensors in a 4-wire measurement configuration.

Is a natural convection version with TwinDISPLAY available?
Yes, the Memmert UN160plus universal chamber shares the same housing as the UF160plus, but operates without an air turbine.

How does the UF160plus differ from the smaller UF110plus?
Both feature TwinDISPLAY and two redundant Pt100 sensors; the UF160plus offers greater capacity – 161 litres instead of 108 and 8 shelves instead of 5 – whilst maintaining the same footprint, but is slightly taller.

Is a programmable door lock available?
Yes, a programmable door lock and door-open detection are options available exclusively for TwinDISPLAY units such as the UF160plus.

Technical details

Contents of delivery

• 1x Memmert UF160plus universal cabinet
• Factory calibration certificate (calibrated at 160 °C)
• Fully insulated stainless steel door with 2-point locking (compression door seal)
• 2x stainless steel grating, electropolished

Regulatory information

The Memmert UF160plus universal cabinet is registered with the Stiftung Elektro-Altgeräte Register (Stiftung EAR) under WEEE registration number DE 66812464.

Customised requirements & procurement service

Options available for the UF160plus include fully transparent glass doors, interior lighting and a power socket, a potential-free alarm contact, MobileALERT remote monitoring and a USB user ID stick for TwinDISPLAY user rights. For data acquisition, a USB-to-Ethernet adapter and AtmoCONTROL software licences – including an FDA-compliant version – are available. In addition, we arrange calibration, IQ/OQ/PQ and maintenance services, including those accredited by DAkkS. Do you require any of these accessories or assistance in selecting the right universal cabinet for your application? Through our procurement service, LT Laborhandel will be happy to assist you with procurement and configuration.