Liquid Controls SP711-3 - Manual (Page 2)

Sponsler, Inc. SP711-3 3-Wire Analog Transmitter pg 2 DOC#: MN-711-3-A
SPECIFICATIONS
Temperature: Operating -40 to 85
°C
Storage -65 to 125
°C
Input Voltage: 12-28VDC 50mA min.
Protected against polarity reversal
Signal Input: Frequency 0-10KHz
Amplitude 20mV - 35V sine or square wave
Sensitivity field adjustable
Impedance 10K
Analog Output 0V @ 0Hz, 5 or 10V @ desired full scale frequency
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
Features: Switch selectable output range
Mounts directly on flowmeter
Enclosure: FM Approved, CSA Certified
Class I Groups B, C, D
Class II Groups E, F, G
Weight 1.7 lbs.
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.