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Emerson 3-9000-771A Section 3: Electrical installation, 3.1Cable length TTL mode, 3.2Cable length Open Collector mode, Sink, drop, Cable, Cable, Cable, Total, Pull-up, Maximum

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

Section 3: Electrical installation

3.1Cable length TTL mode

The maximum cable length is 2000 feet when the “TTL” mode is selected.

3.2Cable length Open Collector mode

For the “open collector” mode, the maximum cable length depends on the cable parameters, pull-up resistance used, the maximum frequency to output, and frequency input parameters being driven. The following table provides estimated cable lengths for different pull-up resistor values and different Max Frequency settings in the meter using the following cable parameters. The table also provides an estimated cable voltage drop which indicates how much voltage will be across the cabling and effectively indicates to what voltage level the frequency input can be pulled down to by the frequency output.

If the voltage drop is higher than the voltage required for the frequency input to see a low state, then the configuration will most likely not work for your system. Performance of frequency outputs will vary from this table with setup and frequency input being driven.

Table 3-1 Configurations for open collector frequency outputs

	Cable		Pull-up		Maximum		Cable voltage
Cable	resistance	Cable	resistance	Total	frequency	Sink	drop

Length	(2 Conductors)	Capacitance	Resistance	Resistance	Frequency	Current	(2 Conductors)

(x1000ft)	Ω	nF	Ω	Ω	(Hz)	(A)	VDC

0.5	16.8	10.00	1000	1016.8	5000	0.024	0.397

1	33.6	20.00	1000	1033.6	1000	0.023	0.780

2	67.2	40.00	1000	1067.2	1000	0.022	1.511

4	134.4	80.00	1000	1134.4	1000	0.021	2.843

0.5	16.8	10.00	500	516.8	5000	0.046	0.780

1	33.6	20.00	500	533.6	5000	0.045	1.511

1.7	57.12	34.00	500	557.12	5000	0.043	2.461

6.5	218.4	130.00	500	718.4	1000	0.033	7.296

The 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

Section 3: Electrical installation

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Contents

Installation Manual For Cryogenic Liquefied Natural Gas Applications Page Important Safety Instructions Product owners (Purchasers): http://www.daniel.com Product operation (Personnel): Signal words and symbols used in this manual DanielTM 3818 Liquid Ultrasonic Flow Meters W a r r a n t y Page Contents Section 1: Introduction Section 2: Mechanical installation Section 3: Electrical installation Section 4: Configuring a 3818 LNG Meter Appendix A: Engineering drawings Appendix B: Open source licenses Appendix C: Index List of Tables List of Tables List of Figures List of Figures Section 1: Introduction 1.1Typical Applications 1.2Features and benefits: 1.3Acronyms, abbreviations and definitions Page Page 1.4Daniel MeterLink software 1.53818 LNG Liquid Ultrasonic Flow Meter design Page 1.6Meter specifications Electronic specifications Communications specifications Digital, analog, and frequency inputs Digital, analog, and frequency outputs 1.7Pre-installationconsiderations 1.8Safety 1.9Certifications and approvals Standards Approval Agencies 1.10FCC compliance Page Section 2: Mechanical installation 2.1Meter piping, lifting and mounting CRUSHING HAZARD Do not remove flange stabilizers A. Flange stabilizers ESCAPING FLUIDS HAZARD 2.2Meter components 2.3Piping recommendations Figure 2-2Piping recommendations unidirectional flow Figure 2-3Piping recommendations bidirectional flow important NOT FAULTY METER INSTALLATION Correctly install the equipment 2.4Field hydrostatic pressure testing 2.5Meter safety for hoist rings and lifting slings SHALL NOT Figure 2-4Meter end flange with tapped flat-counterborehole for hoist ring A.Plug Bolt B.Flat Counterbore Surface Safety precautions using safety engineered swivel hoist rings Figure 2-690 Degree angle between slings Always Figure 2-7Incorrect sling attachment How to obtain safety engineered swivel hoist rings What size safety engineered swivel hoist ring do you need Safety precautions using appropriate rated lifting slings Figure 2-8Correct sling attachment with spreader bar Figure 2-9Incorrect sling attachment 2.6Mounting requirements in Liquefied Natural Gas pipelines Figure 2-10Transducer cabling conduit D. 3818 LNG meter body with shrouds SURFACE TEMPERATURE HAZARD Page Section 3: Electrical installation 3.1Cable length TTL mode 3.2Cable length Open Collector mode 3.3Grounding meter electronics Figure 3-2External ground lug A. External ground lug 3.4Conduit seals HAZARDOUS VOLTAGE INSIDE Do not open in flammable gas area. Disconnect all power to the meter _H1 _H2 Page 3.5Wiring and I/O Figure 3-3CPU Module labeling and LED indicators G. F. C. D. E. B. A A. Acquisition/Measurement mode B.Power C.RX (RS-485/RS-232)- receiving data Table 3-2CPU Module labeling and LED functions Table 3-3Ethernet cable to PC communication Table 3-4Serial Port A parameters Figure 3-4PC to meter serial connection wiring 3.6Daniel Ultrasonic Meters I/O connections Frequency or Digital Outputs (FODO 1) source Frequency or Digital Outputs (FODO 2) source Frequency or Digital Outputs (FODO 3) source Mode options Channel B Phase options: Phase A and Phase B output (based on flow direction) Maximum frequency for the frequency outputs Table 3-5Frequency/Digital Outputs possible configurations Figure 3-6CPU Module - Frequency/Digital inputs common ground A. FODO1 and Digital input1 - shared common ground (Group 1) B. FODO2 and FODO3 - shared common ground (Group 2) Page Table 3-6DHCP server switch settings Table 3-7Configuration protect switch settings Sealing the Transmitter Electronics Enclosure Figure 3-8Transmitter electronic enclosure security latch A.Transmitter Electronics Enclosure end cap B.Security latch Procedure Figure 3-9Transmitter Electronics Enclosure security seal installation A. Transmitter Electronics Enclosure end cap Base Enclosure Security Seals Figure 3-10Base Enclosure wire seal installation A.Base Enclosure cover and socket head screws Page Page Section 4: Configuring a 3818 LNG Meter 4.1Using Daniel MeterLink to configure the meter Daniel MeterLink co-locatedmeter dialog Page 4.2Using AMS Device Manager to configure the meter 11.AMS file download options Figure 4-3AMS file download complete Figure 4-4AMS Device Manager Figure 4-5AMS Device Manager - Overview AMS Device Manager - Guided Setup Figure 4-6AMS Device Manager - Guided Setup Note Figure 4-7AMS Device Manager - Zero Flow Page Figure 4-8AMS Device Manager - Service Tools All Variables status indicators Figure 4-9Display Meter K-Factors AMS Device Manager - Manual Setup Figure 4-10AMS Device Manager - Configure Manual Setup Refresh Note Page Figure 4-15Configure Flow Analysis Alert Figure 4-16AMS Device Manager - Service Tools Alerts Figure 4-17Configuration changes dialog Figure 4-18AMS Device Manager - Service Tools Figure 4-19AMS Device Manager - Service Tools All Variables Figure 4-20AMS Device Manager - Service Tools Trends 4.3Using a Field Communicator to configure the meter Figure 4-213818 transmitter field wiring conduit entries A. Field wiring conduit entries (8) Figure 4-22Field Communicator wiring diagram for the 3818 LNG Meter 4.4Security seals for the meter Appendix A: Engineering drawings A.1 Daniel 3818 LNG Liquid Ultrasonic Flow Meter drawings Engineering drawings Page Page Page Page Appendix B: Open source licenses GNU General Public License Preamble Page TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION Page Page Page Page NO WARRANTY How to Apply These Terms to Your New Programs Page GNU Lesser General Public License Page Page Page B.3 BSD Open Source License M.I.T License Appendix C: Index Manual index Numerics DANIELTM Measurement and Control, Inc Returned Material Authorization Repair Form for Used Equipment Including Decontamination/Cleaning Statement Shipping Requirements