OZONE ANALYZER BMT 964 Manual, Rev. 04/2021
48
Appendix E: DI Water Version BMT 964 AQ
General Description
The OZONE-IN-WATER SENSOR BMT 964 AQ is a UV photometer for the direct measure-
ment of the ozone content of clean, de-ionised water (special version HF for up to 20% hydro-
fluoric acid, range 50 g/m
3
). The instrument is based upon our OZONE ANALYZER BMT 964
for the measurement of ozone in gas.
The BMT 964 AQ is a SENSOR because it does not have a display. It is designed to directly be
connnected to e.g. a workstation via a 4-20 mA, or 0-10 V, signal line. The workstation also has
to monitor and control the instrument's functions like auto-zeroing, or possible failure indica-
tions. An optional REMOTE DISPLAY BMT 964 RD is available for installations without a
workstation (to be specified in the order, needs e.g. BMT 964 AQ/RD, BMT 964 AQ/HF/RD).
The BMT 964 AQ is a splash proof cast aluminium enclosure (IP 65, NEMA 4X)
260 x 160 x 82 mm (W x H x D) with a sea water resistant coating (RAL 5009, azure), and weighs
about 3kg. Four mounting brackets are provided for installing the SENSOR where it is needed,
e.g. underneath a work bench. Power connector and signal connector are water proof. The RS-
232 cable with the D-Sub 9 connector is supplied at a standard length of 2m, other lengths on
request. The cable connecting the Remote Display is supplied with the Display.
The inlet and outlet fittings are ¼" PFA Flaretek (for ¼" OD PFA tubing). A Flarelok version is
available. Two additional ¼" SS Swagelok fittings are provided to flush the inner space of the
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