Precision Digital PD650 - Manual (Page 7)

Model PD650 Large Display Process Meter Instruction Manual
7
INTRODUCTION
This instrument is an analog input process meter with flow rate, totalizer, and
batch control capabilities housed in a rugged, die-cast aluminum NEMA 4X
enclosure. It accepts the common process signals such as 4-20 mA, 0-5 VDC,
1-5 VDC, and 0-10 VDC. It displays these signals in engineering units on a 2.3"
high 4½ digit LED display. The meter also provides two isolated 24 VDC power
supplies to drive both the input and output loops. Options include up to 4 relays
for alarms or batch controlling as well as an isolated 4-20 mA transmitter output.
Features
This model contains several features of interest:
• Two 24 VDC Isolated Transmitter Power Supplies
• 115 or 230 VAC Field Selectable Power
• Rate Display in Units per Day, in Addition to Second, Minute, and Hour
• Programmable Set points for Latching and Non-Latching Relay Operation
• Built-in Snubbers on Each Relay Contact
• Any Set Point Programmable for Process/Rate or Total
• Quit or Exit Menu Scroll with ACK Button
• Pump Alternation Control Feature for Rate Relays
• Automatic Square Root Extraction for Differential Pressure Transmitters
• Programmable Exponent for Weirs and Flumes