2 INSTALLATION
9070
PSU Board TB3
Chassis
A voltage selector is next to the power supply terminal block. Set this voltage
selector to the correct voltage
before
connecting the instrument to the power
supply. Make sure that all of the gland nuts are tightened.
[
Warning:
Connecting the power supply ground (earth) ensures the safety
of your personnel, the reduction of the effects of Radio Frequency
Interference (RFI), and the correct operation of the power supply interference
filter.
2.6 REMOTE
EQUIPMENT
2.6.1
RECORDERS
The choice of two different isolated recorder output signals enables you to use the
instrument with a wide variety of recording and data processing equipment. The load
requirements are shown in Section 8, and the positions of the circuit board switches are
given in Section 4.3.
2.6.2
RANGE INDICATION
The remote range indication relays (TB1 connections) can be used in several different
arrangements to suit the requirements of the installation. The relays can, for example, be
wired directly into a PLC or data logger, but if you use a recorder, you’ll need a method
of indicating the set range. A two-pen recorder is necessary: Pen 1, to indicate the
hydrazine concentration; and Pen 2, to record the instrument range.
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