Grant Instruments T100-MST20 - Manual (Page 13)

T100-MST20 31083 V2
Operating Manual Page 12
www.grantinstruments.com
6.0 Technical specifications
6.1
Operating conditions
Ambient temperature range 5 to 40°C
Altitude above sea level Up to 2,000m (6,500ft)
Operating environment Indoor use only
Maximum relative humidity 80% RH up to 31°C decreasing to 50% RH at 40°C
6.2
Electrical details
Mains supply:
220-240V @ 50/60Hz
Pollution degree: 2
Installation category: II
Mains supply voltage fluctuations are not to exceed ±10% of the nominal supply voltage.
6.3
Product performance
T100
Settable temperature range 0°C to 100°C
Min operating temperature 5°C to 100°C
Stability (DIN 12876) ±0.05°C *
Uniformity (DIN 12876) ±0.1°C
Max current consumption 6.5A
Heater power 1.3kW
* Temperature stability may be affected (±0.3C) in the presence of strong RF fields (10V/m) at
380-400MHz. This level of interference is very unlikely and is only likely to be encountered in
electrically noisy industrial locations as defined in EN61326)
7.0 Technical Tips
7.1
Which water should you use in your bath?
For the long-term reliability of water baths it is important to use oxygenated water that is
free from ions and minerals that can cause corrosion of stainless steel. We recommend
the use of distilled water and de-ionised water from modern ion exchange systems that
do not use salt back flushing to regenerate the ion-exchange cartridges.
Stainless steel is protected from corrosion by a layer of chromium oxide. If the layer is
damaged, oxygen present in water can reform the oxide layer. If the water is still or de-
oxygenated, and the oxide layer is damaged, ions can corrode the stainless steel tank. If
a water bath has been unused for some time, or water boiled, we recommend changing
to fresh distilled water or correct de-ionised water.
Water normally contains calcium or magnesium ions. De-ionised water has most ions
removed as indicated by its conductivity level; the purer the water the lower the