Installation Instructions Owner's manual

DataSite Natural Gas Flow Meter and Remote Terminal Unit 21
Publication 1758-IN001C-EN-P - June 2011
Specifications
General
Attribute Description
Dimensions 213 x 133 x 56 mm
(8.375 x 5.25 x 2.20 in.)
Number of I/O 8 digital inputs
4 digital outputs
8 analog inputs
2 analog outputs
3 pulse inputs
Power supply voltage 12V DC, (-15%, +10%)
Heat dissipation, nominal < 1.2 W
Power consumption 80…120 mA
Input circuit type Current Sinking
Output circuit type Current Sourcing (FET)
Terminal screw torque 0.8 Nm (7 in-lb)
North American temp code T4
Wire size 0.34... 2.5 mm² (22...12 AWG) solid or stranded copper wire rated at
90 °C (194 °F ) or greater 1.2 mm (3/64 in.) insulation max
Pulse Input
Attribute Description
Voltage range 12…24V DC
Off-state voltage 8V DC
Operating frequency 10 kHz with filters off
30 kHz with filters on
On-state current, min 5 mA
On-state current, nom 6 mA
On-state current, max 13.2 mA
Off-state leakage current 2.5 mA
Nominal impedance 2 kΩ