Rockwell Automation 1758-RTU202 Datasite Installation Instructions - Manual (Page 23)

DataSite Natural Gas Flow Meter and Remote Terminal Unit 23
Publication 1758-IN001C-EN-P - June 2011
Voltage input impedance 100 k Ω for 10V DC inputs
170 Ω for 20 mA inputs
Input Resolution 16-bit
Non-linearity ±0.1% of full scale
Overall accuracy ±0.1% of full scale at 25 °C
±0.3% of full scale over temperature range
Voltage Input Overvoltage
Protection Continuous input must not exceed 160% of the rated range
Analog Outputs
Attribute Description
D/A resolution ratio 16-bit
Power supply Successive approximation
Output signal range 4…20 mA
Maximum load
Impedance 1000 Ω with 24V DC loop power
400 Ω with 12V DC loop power
Output type Single ended regulation on positive side with common negative return
Isolation voltage 70V AC or 100V DC
Absolute accuracy ±0.2% (25 °C with 250 Ω load)
±0.5% (full temperature range, 0…1000 Ω load)
Response time 100 ms typical (10…90%)
Noise and ripple, max 0.04%
Transient protection 600 W
HART
Attribute Description
Modulation Frequency Shift Keying (FSK)
Logic 1 - 1200 Hz
Logic 0 - 2200 Hz
Data rate 1200 bps
Transmit level 500 mVp-p / 250 Ω
Receive sensitivity 120 mVp-p/ on
80 mVp-p/ off
Analog Inputs
Attribute Description