Omega Products FLSC-C3-XX Installation Manual

Model FLSC-C3-XX

DC Powered Microprocessor

Controlled Transmitter

CONTENTS

1. Introduction---------------------------------------------------------------- 2

2. Specifications--------------------------------------------------------------- 4

3. Installation and Operation ---------------------------------------------- 5

3.1. Power Supply--------------------------------------------------------- 5

3.2. Flowmeter Input------------------------------------------------------ 6

3.3. Pulse Output ---------------------------------------------------------- 8

3.4. Analog Output------------------------------------------------------- 10

3.5 Alarm Outputs------------------------------------------------------- 12

3.6. Communications Connections------------------------------------- 14

3.7. Wiring ---------------------------------------------------------------- 14

Appendix A – Default Configuration-------------------------------------- 15
Appendix B - Communications---------------------------------------------17

Message Format And Timeout------------------------------------------- 17
Messages-------------------------------------------------------------------- 19

-1-

H

P

A

P

C

P

P

A

O

P

LOWA

C

L

I

C

1. Introduction

The FLSC-C3 is a versatile DC powered microprocessor-based
transmitter, which provides pulse output, analog output and an optional
Low flow alarm option.

The flowmeter input circuitry will accept a variety of signal types
including, low level sinusoidal, MCP/RF, pulse and contact closure.
Optional 20-point linearization is available to correct for flowmeter
non-linearities, improving overall system accuracy. The FLSC-C3 is
compatible with many Omega turbine flowmeters as well as the
FTB3000 series positive displacement flowmeters.

CA182

C/DC

ONVERTER

REAMP

CA180

ONDITIONED SIGNAL

R

ULSE OUT

NALOG OUT

CA184

HIGH
ALARM

LARM

MICROCONTROLLER

OM

DAC

NTERFACE

PCA183

RS232

IGH ALARM OUT

OW ALARM OUT

FLSC-C3 Block Diagram

FLOWMETER INPUT

PULSE OUT

ANALOG OUT

An RS232 communications port located under the top plate allows
FLSC-C3 to be remotely configured using a Windows based
application that included with all units. Configuration and remote
monitoring may also be performed using any PC based
communications program (e.g., HyperTerminal) or ASCII terminal.

-2-

The standard unit is packaged in an extruded aluminum enclosure for
wall mounting or may be mounted directly on FTBG Series Turbine
optional NEMA 4X or EX enclosure. An optional bracket is also
available for mounting on standard DIN rail.

-3-

2. Specifications

General Specifications

Input Signal Type: Magnetic pick up, MCP pick up, Contact
Closure, Pulse

Input frequency range: 0.2 Hz to 4 KHz

Signal level: 10 mV rms to 30 Vdc

Power supply: 8-30 Vdc (Reverse polarity protected)

100-240 Vac (Fuse rating 0.5A, 250 Vac)

optional

Analog Output: 4-20mA, 1-5V
24mA overflow condition

Load resistance: Max 650 Ohms at 24 Vdc
Accuracy: +/- 0.02% of full scale @ 20 C

Temperature drift: 40ppm/deg C

Pulse output 0-5, 0-10V*, Open Collector, AC square
*Requires 12-30 Vdc Power Supply
Internal pull-up resistor 10k Ohms
Recommended load min. 50k Ohms

Pulse Scaling Per flow unit of measure, divide by 1, 10, 100

Hi/Lo Alarm Relay (2A, 30 Vdc), 0-5V, Open Collector

(0.5A, 30 Vdc)

Communications RS232 port for Configuration and

diagnostics

Operating temperature: -40 to 85 C

Humidity: 0-90% Non-condensing

Enclosure: Extruded aluminum, DIN rail mount, or
Explosion Proof

Regulatory: CE compliant

Options

20 point linearization

o

-4-

3. Installation and Operation

3.1. Power Supply

DC Power (8-30 VDC)

DC+

+

DC

POWER

SUPPLY

-

AC Power (100-240 VAC)

AC power for FLSC-C3 requires an optional circuit board, PCA182. The
Alarm option (PCA184) is not available when the AC Power option is
equipped.

DC­SIG+
SIG­ANLG
PULSE+
PULSE­N/C
N/C
N/C

1

PCA180

SW2

DC+

DC­SIG+
SIG­ANLG
PULSE+
PULSE­N/C
N/C
N/C

1

L1
L2

PLUG AC MALE

NEUTRAL HOT

-5-

PCA180

SW2

3.2. Flowmeter Input

The Preamp circuitry for conditioning the flow signal is located on PCA180.
The following drawings illustrate typical connections and switch settings on
PCA180 for various input signals.

Magnetic Pickup Coil

DC+
DC-

SIG+

A B

Mag Pickup Coil

SIG­ANLG
PULSE+
PULSE­N/C
N/C
N/C

1

PCA180

SW1

MCP/RF Coil

A B

C

Modulated Carrier Pickup (RF)

DC+

DC­SIG+
SIG­ANLG
PULSE+
PULSE­N/C
N/C
N/C

1

PCA180

SW1

-6-

Redi-Pulse (TTL Pulse)

BA

C

Redi-Pulse (TTL) Pickup Coil

Redi-Pulse (Open Collector)

DC+

DC­SIG+
SIG­ANLG
PULSE+
PULSE­N/C
N/C
N/C

1

PCA180

SW1

AB

C

Redi-Pulse (Open Collector)
Pickup Coil

DC+

DC­SIG+
SIG­ANLG
PULSE+
PULSE­N/C
N/C
N/C

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1

PCA180

SW1