Liquid Controls SP711-3 User Manual

INSTALLATION & OPERATION

MANUAL

SP711-3 REV. A

3-Wire Analog Transmitter

DOC#: MN-711-3-A.doc

Sponsler, Inc.

SP711-3 3-Wire Analog Transmitter

pg

2

DOC#: MN-711-3-A

12-28VDC 50mA min.

Signal Input:

Frequency 0-10KHz

Analog Output

0V @ 0Hz, 5 or 10V @ desired full scale frequency

Features:

Switch selectable output range

FM Approved, CSA Certified

Weight 1.7 lbs.

SPECIFICATIONS

Temperature:

Input Voltage:

Operating -40 to 85°C
Storage -65 to 125°C

Protected against polarity reversal

Amplitude 20mV - 35V sine or square wave
Sensitivity field adjustable
Impedance 10K

Full scale range - 75Hz-10KHz selectable
Consult factory for other ranges
Response time - 95% of change in 1 second
Linearity - .3% F/S
Tempco - < 2% of reading over entire temperature range
Minimum load resistance 250 ohms

Mounts directly on flowmeter

Enclosure:

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

The SP711-3 is a meter mounted 3-wire analog transmitter designed to linearly convert a
frequency input to an equivalent voltage output whose level is switch selectable @ 0-5V/0-10V.
When incorporated with a turbine flowmeter a voltage representation proportional to flow is
obtainable.

A full-scale frequency range of 75Hz – 10KHz is jumper selectable. The span adjustment
establishes the frequency point at which the full-scale voltage output (5V or 10V) is achieved.
The sensitivity adjustment permits the SP711-3 to discriminate between a signal input or noise
by increasing (CCW) or decreasing (CW) the input signal amplitude necessary to be processed
as a valid signal. This in conjunction with direct meter mounting allows the SP711-3 to operate
effectively in noisy environments.