4. INSTALLATION
4.1 Location
Both models have a robust glass reinforced Noryl
enclosure with a toughened glass window. The fronts
of the Rate Totalisers have IP66 ingress protection
and a gasket seals the joint between the instrument
enclosure and the panel.
The rear of both Rate
Totalisers have IP20 ingress protection.
Figs 3A and 3B show the overall dimensions of the
96 x 48mm BA537E and the 144 x 72mm BA538E
and the recommended panel cut-out dimensions. To
achieve an IP66 seal between the instrument
enclosure and the instrument panel the smaller
tolerance aperture must be used, and the BA538E
must be secured with four panel mounting clamps.
Cut-out dimensions
Recommended for all installations.
Mandatory to achieve an IP66 seal
between the instrument and the panel
90 +0.5/-0.0 x 43.5 +0.5/-0.0
DIN 43 700
92.0 +0.8/ -0.0 x 45 +0.6 -0.0
Support panel wiring to prevent vibration damage
Note: Optional backlight is internally powered
Fig 3A BA537E dimensions & terminals
Cut-out dimensions
Recommended for all installations.
Mandatory to achieve an IP66 seal
between the instrument and the panel
136.0 +0.5/-0.0 x 66.2 +0.5/-0.0
DIN 43 700
138.0 +1.0/-0.0 x 68.0 +0.7/-0.0
Support panel wiring to prevent vibration damage
Note: Optional backlight is internally powered
Fig 3B BA538E dimensions & terminals
Although the front of both Rate Totalisers have IP66
protection, they should be shielded from direct
sunlight and severe weather conditions.
The Rate Totalisers may be installed in any panel
providing that the operating temperature is between
-40ºC and +70ºC. At temperatures below -20ºC the
display digits will change more slowly and contrast
will be reduced, but the instruments will continue to
function and totalise.
4.2 EMC
The BA537E and BA538E comply with the
requirements of the European EMC Directive
2014/30/EU.
For specified immunity all wiring
should be in screened twisted pairs, with the
screens earthed at one point.
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