International 2023. Nowa Szkoła

TERMODYNAMICS

Hot-Air Rework Station NA0079

2-in-1 Hot Air Rework Station with an LED display. This compact in size rework station combines a hot air gun with a soldering iron which makes it perfect for maintenance and production works. The device is equipped with a precise temperature control, a PID regulator controlled by a microprocessor as well as closed-loop sensors. The high-power hot air gun has a high air flow, and it heats up rapidly. Thanks to these features, it can be used for lead-free soldering. The low- voltage heating element of the soldering station is ideal for working with sensitive components. Additionally, the 2-in-1 Hot Air Rework Station has an automatic alarm function and an effective fault detection system.

• rated voltage: ac: 220v +/- 10% 50hz, • output power: 750w +/- 10% (max.), • working environment: 0-40°c, • relative humidity <80%, • storing temperature: -20-80°C; • hot air gun: • rated voltage: ac: 220v +/- 10% 50hz, • output power: 700w +/- 10%, • temperature range: 100 ~ 480°c, • gas flow rate: 120l/min (max.), • temp. stability: +/- 2°c (static). • soldering iron: • rated voltage: ac: 26v +/- 10% 50hz, • output power: 40w +/- 10%, • temperature range: 200 ~ 480°c, • temp. stability: +/- 2°c (static), • tip to ground resistance: <2 ohm, • tip to ground potential: <2mv.

A device that demonstrates the linear (thermal) expansion of metals HG0021 This set helps to perform a qualitative comparison of the degree of thermal linear expansion of the three materials: steel, aluminum and brass in the form of rods. This live experiment, thanks to the indicators acting as single-sided levers with large leverage, allows the user to clearly assess the relative thermal • the set consists of a matel base ( approx. 23 x 9 x 7 cm) with two brackets, three indicators in different colours (length: 19 cm) and plate holders, scale on brackets, three rods for experiments (steel, aluminium, brass, length: 18 cm, dia. 6 mm), convection limiter and a plate for alcohol (diameter 7 cm and height 1 cm) expansion of the these metals. Structure/Technical description

Instrument for demonstrating the thermal conductivity (expansion) of different metals HG1015 Device with 5 metal rods (arranged in the shape of a star) which allows the students to compare thermal conductivity of aluminium, brass, steel, zinc and copper by melting wax balls at the ends of the rods. Each rod has a notch to hold the wax. • length: approx. 340 mm

Thermal expansion. Demonstration set QH0038 A demonstration set for thermal expansion of solids. • made of metal

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