PART ONE - INTRODUCTION
SECTION 1 - GENERAL INFORMATION
Rev. 1-201
Model F53 Flow Monitor/Totalizer (universal-mount 1/2 DIN)
17
Relays
☞
Pulsed Outputs
1.2 Modular Construction
The analyzer has four electromechanical relays with SPDT
contacts. Each relay can be set to function as a CONTROL,
ALARM or STATUS relay. CONTROL and ALARM relays
can be assigned to be driven by one of these:
•
Sensor A flow rate
•
Sensor B volume
•
Sensor B flow rate
•
Sensor C volume
•
Sensor C flow rate
•
Sensor D volume
•
Sensor D flow rate
•
Calculated measurement*
•
Sensor A volume
*A relay can only be driven by the calculated measurement when two sensors
are used and the analyzer has been correctly configured for CALCULATION.
NOTE:
When a relay is set to function as a STATUS relay,
it is no longer configurable. Instead, it becomes a
dedicated system diagnostic-only alarm relay that
automatically energizes when the “WARNING
CHECK STATUS” message flashes on the
MEASURE screen. This occurs when the analyzer
detects a “fail” diagnostic condition. See PART
THREE, Section 6.1 for more details.
For relay setup details, refer to PART THREE, Section 4.5.
The analyzer provides two SPDT pulsed contact closure
outputs (A and B) for remote use such as counting or
pumping. Each pulsed output can be assigned to represent
any measured volume, and set to activate at a desired vol-
ume increment for a preset time duration. Refer to PART
THREE, Section 4.6 for setup details.
The modular construction of the analyzer simplifies field
servicing and provides electrical safety. The front door/
keypad assembly uses voltages no greater than 24 VDC,
and is completely safe to handle.
Opening the analyzer door accesses terminals inside the
enclosure for electrical connections. Line power must be
connected to specifically designated terminals on TB3.
WARNING:
REMOVE LINE POWER BEFORE NEARING THIS AREA
TO PREVENT ELECTRICAL SHOCK.
