INSTALLATION & OPERATION MANUAL SP720-2 Loop Powered 2 Wire Modulated Carrier Amplifier 4-20mA Transmitter DOC#: MN-720
Sponsler, Inc. SP720-2 Transmitter pg 2 DOC# MN-720 SPECIFICATIONS Temperature: Operating -40 to 85°C Storage -65 to 125°C Input Voltage: Minimum = 7V + (20mA X RL) Maximum = 28V + (4mA X RL) Protected against polarity reversal Signal Input: Frequency 0-3500Hz with 50KHz Carrier (Requires pickup coil 1-1.3mh) Analog Output: 4mA @ 0Hz, 20mA @ desired full scale frequency Full scale range = 35Hz-3500Hz selectable Response time = 95% of change in 1 second Linearity = .
Sponsler, Inc.
SP720-2 Transmitter Sponsler, Inc.
SP720-2 Transmitter Sponsler, Inc. pg 5 DOC#” MN-720 DATE REV REVISION RECORD AUTH DR CK .90 TERMINAL LOCATION 1 2 3 4 5 3.00 DIA. R22 R24 R25Z E R O R26 SIGNAL R19 + C13 R21 R9 R23 + R11 R14 A1 C8 S P D1 C9 R27 A N C10 R17 R18 C11 Q4 S1 R8 CR2 + + C6 R6 FREQUENCY SELECT '0' @ 35-350 Hz '1' @ 351-3500 Hz C7 R12 R10 Z1 C5 J1- Q3 Q5 R13 R15 C12 5.
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