PART TWO - INSTALLATION
SECTION 3 - ELECTRICAL CONNECTIONS
Model F53 Flow Monitor/Totalizer (universal-mount 1/2 DIN)
Rev. 1-201
28
3.4 Pulsed Outputs
(contact closure)
3.5 Closed Contact
TTL Input
☞
WARNING:
MAKE SURE LINE POWER IS NOT PRESENT WHILE
CONNECTING WIRES TO TB2 RELAY TERMINALS.
FIGURE 2-5
Connecting Control/Alarm Device(s) To Electromechanical Relay(s)
Two sets of SPDT pulse contact closure outputs (A and B)
are provided at Terminals 19 through 24 on TB1. Connect
remote devices such as counters or pumps to appropriate
terminals. For pulsed output configuration details, see
PART THREE, Section 4.6.
The closed contact input feature of the analyzer enables
you to conveniently:
•
Hold the analog outputs at their last measured values.
•
Hold CONTROL and ALARM relays in their present
“on/off” states.
To initiate these actions, momentarily connect TTL Termi-
nals 8 and 9 on TB1, either locally or remotely.
NOTE:
During calibration, the selected output state
(“HOLD,” “XFER” or “ACTIVE”) overrides the TTL
input hold feature.
