Emerson 3-9000-771A Electronic specifications, Table 1-2Meter specifications, Communications specifications, Digital, analog, and frequency inputs

Daniel 3818 LNG Liquid Ultrasonic Meter Installation Manual	Section 1: Introduction
3-9000-771 Rev A	May 2012

Table 1-2 Meter specifications

Electronic specifications

Power	Meter
	• 10.4 VDC to 36 VDC
Temperature
	• 11 W typical power consumption
flameproof Transmitter
	Serial cable
Electronic Enclosure and
	•	Belden #9940 or equivalent (22 gauge)
Base Electronics Enclosure
		—	Capacitance (pF/m) 121.397 (conductor to conductor)
		—	Capacitance (pF/m) 219.827 (conductor to other conductor and shield)
		— Resistance (DC) DCR @ 20°C (Ohm/km) 48.2307
			Nominal Outer shield resistance - DCR @ 20°C (Ohm/km) 16.405
		—	Operating voltage - 300 V RMS (UL AWM Style 2464)
		—	Current 2.4 Amps per conductor @ 25°C (recommended)
	Ethernet cable
	•	Cat-5 Standard 100Mbps
	Frequency (see Table 3-5)
	• 22 AWG wire characteristics are as follows:
		—	Capacitance = 20 pF/ft or 20 nF/1000 ft (between two wires)
		— Resistance = 0.0168 Ohms/ft or 16.8 Ohms/1000 ft
		—	Pull-up voltage is 24 VDC
Transducers	•	LT-07
	• Operating Temperature Range -321 oF to +140 oF (-196 oC to 60 oC)
Communications specifications
Connectivity protocols	One serial RS-232/RS-485 ports (115 kbps baud rate) (Modbus RTU/ASCII)
	• (1) Serial Port A
		(RS-232/RS-485 Full Duplex/RS-485 Half Duplex)
	One Ethernet Port (TCP/IP) 100 BaseT
	• Up to 10 Mbps
	•	Modbus TCP
Device compatibility	FloBoss 103, FloBoss S600 flow computer, ROC 107
Digital, analog, and frequency inputs
Digital Input(s)	(1) Single polarity (for flow calibration gating - contact closure)
(Selectable)	• Single input for starting and stopping
	• Four pulse configurations available
Analog Input(s)	(2) 4-20 mA
	•	AI-1 Temperature
	•	AI-2 Pressure
	Note: The analog-to-digital conversion accuracy is within ±0.05% of full scale over the operating
			temperature range.
	Note: AI-1 and AI-2 are electronically isolated and operate in sink mode. The input contains a
			series resistance so HART® Communicators can be connected to configure sensors.
			A 24 Volt DC power supply is available to provide power to the sensors.

Meter specifications 9