Brooks Instrument BM50 - Manual (Page 34)

3-10
Section 3 Operation Installation and Operation Manual
X-PD-BM-Ovals-eng
Part Number: 541B031AAG
January, 2009
BM Oval Series
OTHERS; SERIAL NUMBER - SETUP LEVEL 63:
For support and maintenance it is important to have information about the
characteristics of the Standard Display. Your supplier will ask for this
information in the case of a serious breakdown or to assess the suitability
of your model for upgrade considerations.
OTHERS; PASSWORD - SETUP LEVEL 64:
All SETUP-values can be password protected. This protection is disabled
with value 0000 (zero). Up to and including 4 digits can be programmed,
e.g. 1234.
OTHERS; TAG NUMBER - SETUP LEVEL 65:
For identification of the unit and communication purposes, a unique tag
number of maximum 7 digits can be entered.
• This unit must be installed in accordance with the EMC guidelines (Electro
Magnetic Compatibility).
• Electro static discharge does inflict irreparable damage to electronics! The
electrician has to discharge himself by touching a well-grounded object
before opening the casing.
• NEVER expose the Standard Display to strongly varying (weather)
conditions.
• When used in very cold surroundings or heavy varying temperatures, take
the necessary precautions against moisture by placing a dry sachet of silica
gel inside the display housing.
Installation
Voltage Supply Flowmeter Pick-up
Externally Powered Applications 8.30 Vdc:
When the Standard Display is externally powered, the sensor can be
powered with the same voltage by using the shared terminal 4. If the unit is
fitted with a battery as well, the output voltage of 3.2 Vdc from the battery is
blocked automatically as soon as you connect the external power-supply.
Battery Powered Applications:
A supply voltage of 3.2 Vdc is available for the signal output of the
flowmeter. This voltage MAY NOT be used to power the flowmeters
electronics, converters etc. as it is not a power supply as such! All
energy used by the flowmeters pick-up influences the battery life directly; it
is strongly advised to use a “zero power” pickup with the battery option,
such as a reed-switch. It is possible to use a low power input NPN output
signal, but the battery life time will be reduced.
Terminal Connectors
The following terminal connectors are available:
Figure 3-4 Terminal Connectors