PZ 20 ET Precision Hot Plates
Precision Hot Plates for continuous operation
¸ Precise temperatures
¸ Easy to operate
¸ Long-lasting
Precision Hot Plates for non-stop operation
The heating surfaces of the precision hot plates are composed of an efficient heat conducting Aluminium alloy, and have a smooth anodised finish for easy maintenance.
The electrical long-term heating ensures that the temperature remains constant, even on the corners and edges.
The microprocessor controlled digital regulator allows the operating temperature to be preset in 0.1degree stages up to 99,9degree and in 1.0degree stages for temperatures over 100degree.
The preset temperature remains programmed, even when the equipment has been switched off. Presetting is only possible by using two fingers; this is to prevent any unintentional alterations that could occur by accidentally touching only one key. The actual temperature is permanently displayed by 14mm high numerals after the keys have been released.
An adjustable safety device against overheating prevents the hotplate and the substance to be heated, from dangerously high temperatures. A removable Plexiglass cover prevents any unauthorised adjustments.
All models have an electronic output control that allows the heating output to be adjusted between 10..100%, this prevents the hotplate exceeding the preset temperature and/or avoids any after-heating. The temperature of all hotplates is measured with a built-in, quick-reaction sensor (PT 100).
All models are equipped with a 3-pole diode output bushing (extra-low voltage), to permit the connection of one of the following appliances:
1. Contact Thermometer-to measure the temperature directly from the heated material and to regulate.
2. Time switch-in order to heat or cool the apparatus at preset intervals.
Special Feature:
Due to the asymmetrical, quick-reaction special heating and thermal sensors as well as output adaptation to the thermal requirements, very precise temperatures with a good uniform heat are obtainable over the whole heating surface.
Order No.(without controller):PZ 20 ET
Plate size:200 mm x 200 mm
Weight:4,0 kg
Watt:800
Volt:230
Max. Temp.:350degree
Begrenzer Limiter:100...350degree
For an additional charge, all models can be delivered with an anodised black or Teflon coated heating surface
Order-No.:PR 5 SR
Overall dimensions(mm):305 x 105 x 200
Voltage(V/Hz):230 / 50-60
Switch performance:10 A (2300 Watt)
Time ranges(h/min):5 x 2 x 9/59
Cable length(m):1,8
Display(mm):14 / 10
Weight(kg):2,7
The microprocessor controlled ramp regulator PR 5 SR is a complex time/temperature control for the precisionhotplates. Pressing the START key enables the programming of a set of a maximum of 5 ramps (each ramp consists of the ramp-time, constant temperature and the duration of the constant temperature). 3 programme sets can be stored in the non-volatile
memory bank.
Further Advantages:
¸ A programmed lead time enables the start to be activated up to 99 hours in advance.
¸ Easy and comprehensible programming because each temperature and time parameter has its own key. At any time during the running of the programme it is possible to check each programmed value.
¸ Output regulator from 0-100%
¸ Change-over switch for non-stop operation.
¸ Programme back-up by EEProm.
¸Buzzer signal at the end of the programme.
