Solartron Metrology Ametek OD2, Инструкция пользователя

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6
Part No. 501107 Issue 13
2. INSTALLATION
2.1 INTRODUCTION
This section provides installation instructions for the instrument. It also includes information about
initial inspection and damage claims, preparation for use and packaging, storage and shipment.
2.2 INITIAL INSPECTION
Inspect the shipping container for damage. If the container or cushioning material is damaged,
it should be kept until the contents of the shipment have been checked for completeness and
the instrument has been checked mechanically and electrically. If the contents are incomplete,
or if there is a mechanical damage or defect, or if the instrument does not pass the operator’s
checks, notify the nearest Solartron Metrology office. Keep the shipping materials for carrier’s
inspection.
2.3 PREPARATION FOR USE
CAUTION:
Do not perform electrical tests when there are signs of shipping damage to any portion of the
outer enclosure.
It is recommended that all installation instructions are read fully prior to installation of the
instrument.
2.4 POWER REQUIREMENTS
A dc power supply of 13V to 48V and up to 30mA is required. Because the transmitter is
frequently installed at a considerable distance from the indicator/control point, there is a
possibility that the supply cable connections will be reversed. The transmitter is protected by an
internal diode against possible damage caused by reversed polarity.
For correct operation 13V must be achieved at the transmitter at 20mA full scale, the total
resistance of the installed indicator and cable must not be too large. As a general guide do not
exceed the value of R calculated using the following formula:
Where Vs = actual power supply voltage
For example, if V
s
= 24V, R
O
550 ohms.
2.5 WORKING ENVIRONMENT
Model OD2 Transmitters will operate in environmental temperatures from 0 to 60
o
C (32 to
140
o
F).
Provided the lid and cable entry seals have been properly applied, the enclosure will withstand
low pressure water hosing to IP65 specification requirements. This version is therefore ideally
suited for installation in dirty or damp industrial environments or in the open where it may be
exposed to rain.
2.6 PHYSICAL DESCRIPTION
The OD2 Transmitter can be supplied enclosed in a grey ABS plastic box measuring 120mm x
80mm x 55mm (4.75in x 3.15in x 2.16in) deep with sealed cover and cable entries, one for the
transducer wire and the other for the supply cable.
Alternatively, it is available simply as a basic printed circuit card measuring 94mm x 72mm (2.7in
x 2.83in) for mounting into the customer’s own enclosure. Cable glands accept wires from 1mm
to 5mm (0.04in to 0.02in) diameter.
V
s
- 13
0.02
ohms
R ≤