Thermo Scientific HB-S200, User Manual

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Sarasota 200 Ultrasonic Multipath
Flowmeter
Section 2, SYSTEM COMPONENTS, Page 2-7 Thermo Fisher Scientific
SYSTEM COMPONENTS
2.3.2.1.3. Depth input signals
These will normally be from auxiliary depth gauges via 4-20 mA. Common examples are
pressure transmitters and downward facing ultrasonic devices. The Sarasota 200 can accept
up to 2 inputs of this type via PL10 and PL11. The power for the 4-20 mA loop can come from
the Sarasota 200 or from the external device.
Pin Signal
name
Connect for internal
loop power Connect for external
loop power Comment
1 0V N/C 4-20mA -
2 IN 4-20mA - 4-20mA +
3 +V 4-20mA + N/C
Applies to
INP 1 on PL10 and
INP2 on PL11
2.3.2.1.4. Output signal connections (Analogue)
There are 2 analogue output connectors, OUT1 PL18 and OUT2 PL19. The functions to be
output and their ranges are programmable. The power for the 4-20 mA loop can be internal,
from the Sarasota 200 in which case the outputs are not isolated, or from the external device
in which case they are isolated.
Pin Signal
name
Connect for internal
loop power Connect for external
loop power Comment
1 0V 4-20mA -
2 - 4-20mA + 4-20mA -
3 + 4-20mA +
4 +V
Link 3 – 4
Applies to
OUT1 PL18 and
OUT2 PL19
2.3.2.1.5. Relay connections
There are 3 relay connections
PL17 System fault relay . This relay has Normally Open (NO), Normally Closed
(NC) and Common (C) contacts. It operates when there is a fault which prevents flow
being calculated. This will occur when no velocity path is functioning or when no
depth is functioning.
PL13 Relay 1 . Solid state relay, see Appendix 1, Screens. Although relay 1 may be
programmed for any of the available functions, its faster switching rate makes it
particularly suited for a pulsed output to an external totaliser. See appendix 2
Specification.
PL9 Relay 2 . Programmable, see Appendix 1, Screens. This relay has Normally
Open (NO), Normally Closed (NC) and Common (C) contacts.
For example, relay 2 could be programmed as a high flow alarm to switch on at a high flow
and off again at a lower value (hysteresis).