Overview
The 515 GN16 application measures the volume, mass and gross heat content of natural gas. The instrument uses single or stacked differential pressure volumetric flow and analog temperature and pressure sensor inputs.
The instrument calculates the flow according to generic differential pressure equations and incorporates the conditions at which the flowmeter was calibrated.
The SGERG calculation (AGA-8 Detail Characterization Method) is used to obtain accurate values of density and compressibility factors for the flow calculations.
Calculations
The gas density and compressibility factor calculations are based on the SGERG (AGA-8 Gross) equations. The calculations are valid for the region:
-8°C < t < 62°C P < 12MPa
17°F < t < 143°F P < 1740psia
Formulas
Mflow = volume flow• ρflow
corrected flow = Mflow/ρ ref
Heat flow = Mflow•Hm
Where:
Mflow = mass flow
ρflow = density at flow conditions
ρ ref = density at reference conditions
Hm = mass gross heating value
Features at a glance
- Tailored for differential pressure volumetric meters with single or stacked transmitters
- Generic differential pressure flow calculations
- Uses SGERG (AGA-8 Gross Method) Natural Gas compressibility calculations
- For Natural and Coke-Oven Gases
- Allows for square law and non-linear correction
- Selection of second language and user tags
- RTC logging with over 1000 entries
- Infra-red communications port on front panel
- Pulse width and scaling of pulse output
- 4-20mA retransmission
- Selectable protocols on serial ports including Modbus RTU and printer output
- Front panel adjustment of 8-24V DC output voltage
- Backlit Display
- LCD Backup
Displayed Information
The front panel display shows the current values of the input variables and the results of the calculations. A list of the variables for this application and their type (total or rate) is shown at the end of this document.
The instrument can be supplied with a real-time clock for storage of up to 100 transactions with time and date stamps.
Communications
There are three communication ports available as follows:
- RS-232 port (standard)
- RS-485 port (advanced option)
- Infra-red port (on front panel)
The ports are available for remote data reading, printouts and for initial application loading of the instrument.
Isolated Outputs
The opto-isolated outputs can retransmit any main menu variable. The type of output is determined by the nature of the assigned variable. Totals are output as pulses and rates are output as 4-20 mA signals. One output is standard, a second output is available as an option.
Relay Outputs
The relay alarms can be assigned to any of the main menu variables of a rate type. The alarms can be fully configured including hysteresis. Two relays are standard with an additional two available in the advanced option.
Software Configuration
The instrument can be further tailored to suit specific application needs including units of measurement, custom tags, second language or access levels. A distributor can configure these requirements before delivery.
Instrument parameters including units of measurement can be programmed in the field, according to the user access levels assigned to parameters by the distributor.
All set-up parameters, totals and logged data are stored in non-volatile memory with at least 30 years retention.
Temperature and Pressure Input Types
Temperature sensor inputs can be either PT100, PT500, 4-20mA, 0-5V or 1.5V signals. Pressure sensor input can be either 4-20mA, 0-5V or 1-5V signals.
Terminal Designations
| Terminal Label | Designation | Comment | ||
|---|---|---|---|---|
| 3 | SG | - | Signal Ground | |
| 5 | EXC V | 2+ | Excitation Term 2+ | For AINP1 RTD Input |
| 7 | AINP1 | + | Analog Input ch 1 (+) | Temperature Input |
| 8 | AINP1 | - | Analog Input ch 1 (-) | Temperature Input |
| 9 | AINP2 | + | Analog Input ch 2 (+) | Pressure Input |
| 10 | AINP2 | - | Analog Input ch 2 (-) | Pressure Input |
| 11 | AINP3 | + | Analog input 3 (+) | Main or low flow input |
| 12 | AINP3 | - | Analog input 3 (-) | Main or low flow input |
| 13 | AINP4 | + | Analog input 4 (+) | High flow stacked input |
| 14 | AINP4 | - | Analog input 4 (-) | High flow stacked input |
| 15 | Vo | + | 8-24 volts DC output | Overload protected |
| 16 | G | - | DC Ground | |
| 17 | Vi | + | DC power input | DC power in 12-28V |
| 18 | SH | E | Shield terminal | |
| 19 | RS485 | + | RS485 (+) | Advanced option |
| 20 | RS485 | - | RS485 (-) | Advanced option |
| 21 | RS485 | G | RS485 Ground | Advanced option |
| 22 | LOGIC INPUTS | 1+ | Switch 1 | |
| 23 | LOGIC INPUTS | 2+ | Switch 2 | |
| 24 | LOGIC INPUTS | 3+ | Switch 3 | |
| 25 | LOGIC INPUTS | 4+ | Switch 4 | |
| 26 | LOGIC INPUTS | C- | Signal Ground | |
| 27 | OUT 1 | + | Output ch 1 (+) | |
| 28 | OUT 1 | - | Output ch 1 (-) | |
| 29 | OUT 2 | + | Output ch 2 (+) | Advanced option |
| 30 | OUT 2 | - | Output ch 2 (-) | Advanced option |
| 31 | RELAYS | RC | Relay common | |
| 32 | RELAYS | R1 | Relay 1 | |
| 33 | RELAYS | R2 | Relay 2 | |
| 34 | RELAYS | R3 | Relay 3 | Advanced option |
| 35 | RELAYS | R4 | Relay 4 | Advanced option |
| E | AC MAINS | E | Mains ground | AC power in 95-135V or 190-260V |
| N | AC MAINS | N | Mains neutral | AC power in 95-135V or 190-260V |
| A | AC MAINS | A | Mains active | AC power in 95-135V or 190-260V |
| RS232 port | 9-pin serial port |
515 GN16 Dimension Drawings
Part Number
515.XXXXXX-GN16
See product codes to select required features
Default application software:
515-GN16-000000
515 Specifications
Operating Environment
Temperature
-20 °C to +60 °C (conformal coating)
+5 °C to +40 °C (no coating)
Humidity
0 to 95% non condensing (conformal coating)
5% to 85% non condensing (no coating)
Power Supply
95…135 V AC or 190…260 V AC or
12…28 V DC
Consumption
6W (typical)
Protection
Sealed to IP65 (Nema 4X) when panel mounted
Dimensions
147 mm (5.8″) width
74 mm (2.9″) height
167 mm (6.6″) depth
Display
Type
Backlit LCD with 7-digit numeric display and 11-character alphanumeric display
Digits
15.5 mm (0.6″) high
Characters
6 mm (0.24″) high
LCD Backup
Last data visible for 15 min after power down
Update Rate
0.3 second
Non-volatile Memory
Retention
> 30 years
Data Stored
Setup, Totals and Logs
Approvals
Interference
CE compliance
Enclosure
ATEX, FM, CSA and SAA approved enclosures available for hazardous areas
Real Time Clock (Optional)
Battery Type
3 volts Lithium button cell (CR2032)
Battery Life
5 years (typical)
Analogue Input (General)
Overcurrent
100 mA absolute maximum rating
Update Time
1.0 sec
Configuration
4-20mA, 0.5V and 1-5V input
Non-linearity
Up to 20 correction points (flow inputs)
RTD Input
Sensor Type
PT100 & PT500 to IEC 751
Connection
Four Wire
Range
-100°C to 300°C
Accuracy
0.1°C typical
4-20mA Input
Impedance
100 ohms (to common signal ground)
Accuracy
0.05% full scale (20°C)
0.1% (full temperature range, typical)
0-5 or 1-5 Volts
Impedance
10 Mohms (to common signal ground)
Accuracy
0.05% full scale (20°C)
0.1% (full temperature range, typical)
Logic Inputs
Signal Type
CMOS, TTL, open collector, reed switch
Overvoltage
30V maximum
Relay Output
No. of Outputs
2 relays plus 2 optional relays
Voltage
250 volts AC, 30 volts DC maximum (solid state relays use AC only)
Current
3 A maximum
Communication Ports
Ports
RS-232 port
RS-485 port (optional)
Infra-red port
Baud Rate
2400 to 19200 baud
Parity
Odd, even or none
Stop Bits
1 or 2
Protocols
ASCII, Modbus RTU, Printer
Transducer Supply
Voltage
8 to 24 volts DC, programmable
Current
70 mA @ 24 V, 120 mA @ 12 V maximum
Protection
Power limited output
Isolated Output
No. of Outputs
1 configurable output (plus 1 optional)
Configuration
Pulse/Digital or 4-20 mA output
Pulse/Digital Output
Signal Type
Open collector
Switching
200 mA, 30 volts DC maximum
Saturation
0.8 volts maximum
Pulse Width
Programmable: 10 , 20, 50, 100, 200 or 500ms
4-20mA Output (Optional)
Supply
9 to 30 volts DC external
Resolution
0.05% full scale
Accuracy
0.05% full scale (20°C)
0.1% (full temperature range, typical)
Important: Specifications are subject to change without notice.
Ordering Information
Product Codes
| Model | Supplementary Code | Description | ||||||
|---|---|---|---|---|---|---|---|---|
| 515 | - | GN16 | ||||||
| Enclosure | 1 | Panel mount enclosure | ||||||
| Enclosure | 2 | Field mount enclosure (not yet available) | ||||||
| Enclosure | 3/5 | Explosion proof Ex410 with metric glands (5 specifies heater version) | ||||||
| Enclosure | 4/6 | Explosion proof Ex410 with NPT glands (6 specifies heater version) | ||||||
| Output Options | 0 | 4 logic inputs, 1 isolated output, 2 relays (only relay type 1 is available), RS232 (DB9) communication port | ||||||
| Output Options | 1 | 4 logic inputs, 2 isolated outputs, 4 relays, real-time clock data logging, RS232 (DB9) and RS485 communication ports | ||||||
| Output Options | 2/3 | 4 logic inputs, 2 isolated outputs, 4 relays, real-time clock data logging, RS232 (DB9) and Ethernet/RF communication ports (not yet available) | ||||||
| Relay Type | 1 | Electromechanical relays only | ||||||
| Relay Type | 2 | 2 electromechanical and 2 solid state relays | ||||||
| Relay Type | 3 | Solid state relays only (not yet available) | ||||||
| Power Supply | E | For 220/240 VAC | ||||||
| Power Supply | A | For 110/120 VAC | ||||||
| Power Supply | D | For DC power only 12-28 VDC | ||||||
| Display Panel Options | F | Fully optioned (with backlight, LCD backup and Infra-Red comms port) | ||||||
| PCB Protection | C | Conformal coating - required for maximum environmental operating range. Recommended to avoid damage from moisture and corrosion. | ||||||
| PCB Protection | N | None - suitable for IEC standard 654-1 Climatic Conditions up to Class B2 (Heated and/or cooled enclosed locations) | ||||||
| Application Pack Number | GN16 | Defines the application software to be loaded into the instrument | ||||||
Main Menu Variables
| Main Menu Variables | Default Units | Preferred Units | Variable Type |
|---|---|---|---|
| Volume | m3 | Total | |
| Volume Flowrate | m3/min | Rate | |
| Corrected Volume | m3 | Total | |
| Corrected Flow Rate | m3/min | Rate | |
| Heat | GJ | Total | |
| Heat Flow Rate | GJ/h | Rate | |
| Mass | kg | Total | |
| Mass Flow Rate | kg/min | Rate | |
| Temperature | Deg C | Rate | |
| Pressure | MPa | Rate | |
| Compressibility Factor | - - - | - - - | Rate |
Please specify the preferred units of measurement.
500 Series in Ex410 Enclosure