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Table of Contents
Summary of Contents for BMT DH6
- Page 1 Manual Rev. 10/2020 BMT MESSTECHNIK GMBH, Stahnsdorf, Germany. Tel. +49 - 3329 - 696 77 - 0, fax +49 - 3329 - 696 77 - 29 OSTI Inc., Monterey, California, USA Tel. +1 - 831 - 649 11 41, fax +1 - 831 - 649 11 51...
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Page 2: Table Of Contents
SAMPLE GAS DEHUMIDIFIER DH6 Manual, Rev. 10/2020 Sample gas dryer DH6 Contents General Description Cautions & Warnings Installation Electrical connection Display Error Messages Low Concentration Version DH6-LC Maintenance Specifications... -
Page 3: General Description
1ºC and 15°C. The DH6 is a box about 279x140x64 mm (HxDxW) standing upright on one "leg" (upright posi- tion is inevitable because the condensate formed inside the cooler has to flow back into the off- gas system). -
Page 4: Cautions & Warnings
The maximal length of this cable may be 10 meters. An FEP tubing 3x5 mm (optional Swagelok) is leading the sample gas from the DH6 to the ozone analys- er (also available are fittings for 4x6 mm FEP tubing, and Swagelok 6 mm or ¼"). The dehumidi- fied sample gas now will not form any condensate inside the sample tubing. -
Page 5: Electrical Connection
The electronics are protected by a fuse rated 2A slow blow, type TR-5 (Wickmann). It also has a reverse polarity protection, which will not burn the fuse in case of the wrong polarity. If connect- ed to a BMT 964 OG off-gas analyser, no external power supply is needed. Display The digital display shows the actual temperature of the inner wall of the cooler. -
Page 6: Error Messages
1ºC and 15°C in one de- gree increments by turning the potentiometer with a small screw driver (supplied with the DH6). Default setting is 5°C. The button has to be pressed and held all the time during setting the new set point temperature. -
Page 7: Low Concentration Version Dh6-Lc
In case any of the above errors the Peltier cooler and the fan are switched off. The error relay opens. And the DRYER ERROR lamp in the front door of the BMT 965 OG is lit. The error relay is also in it's error position while the power to the DH6 is switched off. Low Concentration Version DH6-LC For measurement of very low concentration ozone, e.g. -
Page 8: Maintenance
O-ring may not be used again. Re-assembly of the DH6 must be done in reverse order, followed by a leak test. Further maintenance is not necessary. In case of any problems you should contact service@bmt-berlin.de or send the unit to BMT Messtechnik GmbH +49-3329-69677-0 Hamburger Strasse 19 service@bmt-berlin.de... -
Page 9: Specifications
MTBF 40.000 h (fan) proof pressure min 1 bar gauge pressure drop 0.1 mbar @ 0.5 l/min; DH6-LC with filter: approx. 6 mbar @ 0.5 l/min ambient temperature 0 - 40°C (non-condensing) 4.5 W @ ΔT (T cooling power – T...
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