Liquid Controls SP718-V User Manual

INSTALLATION & OPERATION

MANUAL

SP718-V REV. A

Modulated Carrier Amplifier

0-5V/0-10V Transmitter

DOC#: MN-718V-A.doc

Sponsler, Inc.

SP718-V Modulated Carrier Amplifier

pg

2

DOC#: MN-718V-A

Temperature:

Operating 0 – 70oC

110VAC 60Hz or 12 – 16.5VDC 50mA MAX

Signal Input:

Frequency 0 – 3500 Hz w/ 50KHz carrier (requires P/U Coil 1 – 1.3 mh)

Switch Selectable Output Range
Weight 1. 7 lbs.

SPECIFICATIONS

Storage –20 – 85oC

Input Voltage:

Observe Polarity
Consult factory for other I nput Voltages

Analog Output:

Features:

Enclosure:

0V @ 0Hz, 5 or 10 V @ desired Full Scale Frequency
Full Scale Range 60 Hz – 3500 Hz Selectable
Consult factory for other Rang es
Response Time 95% of change in 1 second
Linearity .3% F/S
Tempco <2% of Reading over entire Temperature Range
Maximum Load Resistance 1000 ohms

Mounts directly on flowmeter
FM Approved, CSA Certified

Class I Groups B, C, D
Class II Groups E, F, G

The SP718-V Modulated Carrier Amplifier and Analog Transmit t er is a meter mounted device designed to
combine the advantages of the Modulated Carrier principle with the convenience of an Analog O utput in a
single PCB Assembly. The SP718-V linearly converts the detected carrier frequency shift rate to an
equivalent voltage output level, 0-5V/0-10V that is switch selectable. When incorporat ed with a turbine
flowmeter, a voltage representation pr opor tional to flow is obtainable.

The SP718-V produces a carrier frequency in conjunction with a RF pick-up coil, detects the shif t in the
carrier frequency (Modulation) that occur s with the passage of magnetic mat er ial and linearly generat es a
voltage output that is proportional to the rate of Modulation.

A full-scale freq uency range of 60-3500Hz is jumper selectable. The Span adj ustment establishes the
frequency point at which the Full Scale Output is achieved.

The Modulated Carrier principle introduces no drag on the passing magnetic device therefore; when utilized
with a turbine flowmeter extension of the flowmeter’s nom inal linear range at the low end of the flow
spectrum is realized. This parameter is particularly useful when measuring a low mass gas and the
operating flowrate is at the f lowmeter ’s low end.