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PanaFlow Gas Meter
System
Panametrics Ultrasonic
Flow Meters for Gas
The PanaFlow Gas Meter System is a
complete ultrasonic flow meter offering for
gas applications with a unique combination
of accuracy, rangeability, and reliability in a
robust meter design.
The PanaFlow Gas Meter System consists of
two models—the one-path PanaFlow Z1G and
the two-path PanaFlow Z2G. Both meters offer
a high-performance, yet affordable solution
for a variety of gas flow applications.
Applications
PanaFlow gas flow meters can be used in applications
such as:
• Biogas
• Natural gas production
• Vent gas
• Waste gas
• Shale gas
• Coal-seam gas wellhead
• Vapor recovery
• Fuel gas
Features & Benefits
Features Benefits
No drifting, no
periodic calibration
required
No pressure drop
No restriction in the
pipe
No filters or
strainers
Bi-directional
measurement
No moving parts
Explosion-proof
transducer design
Full ultrasonic
product line
No loss of process control, no
downtime, no expense from
calibration, and optimization
of assets.
No wasted energy from
running a pump or need to
purchase a larger size pump
Contamination will not
affect meter’s measurement
(drifting) or cause any
damage to meter
No maintenance cost
No additional meters
required
No loss of process control, no
downtime, no expense from
calibration, and optimization
of assets.
More power to transducers
at higher voltages, less risk of
attenuation in fluid
Meets more needs with
full product portfolio; one
manufacturer for ultrasonic
flow meters
Panametrics.com
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Reliable Flow Measurement that is
Easy on Your Budget
The PanaFlow gas portfolio represents a new
generation of Panametrics ultrasonic flow meters.
Offered in one-path or two-path wetted versions,
PanaFlow gas meters bring together Panametrics
ultrasonic expertise with the benefits of ultrasonic
technology for affordable, high performance flow
measurement.
Unlike other flow measurement technologies, the
PanaFlow meters do not require maintenance since
they do not have any obstruction in the flow path to
clog the process line or moving parts to be damaged
by flowing gas. They provide years of trouble-free
operation with no adjustments, tuning or corrections.
PanaFlow gas meters provide a lower overall total
cost of ownership, superb reliability, and excellent
performance.
Designed for High Impurity Gas
Measurements
Each PanaFlow gas meter is a complete ultrasonic
flow metering system specifically designed for the
measurement of gases with high levels of impurities.
Engineered to the highest levels of reliability and
dependability, it is designed with an all-cast meter
body and high-accuracy machined surfaces. It has
no welds to adversely impact flow dynamics, making
possible high accuracy flow measurements, even at
low flow conditions.
Transit-Time Flow Measurement
In this method, two transducers serve as both ultrasonic
signal generators and receivers. They are in acoustic
communication with each other, meaning the second
transducer can receive ultrasonic signals transmitted
by the first transducer and vice versa.
In operation, each transducer functions as a
transmitter, generating a certain number of acoustic
pulses, and then as a receiver for an identical number
of pulses. The time interval between transmission and
reception of the ultrasonic signals is measured in both
directions. When the gas in the pipe is not flowing,
the transit-time downstream equals the transit-time
upstream. However, when the gas is flowing, the
transit-time downstream is less than the transit-time
upstream.
The difference between the downstream and upstream
transit times is proportional to the velocity of the flowing
gas, and its sign indicates the direction of flow.
Local or Remote Electronics
PanaFlow gas meters are offered with local or remote
electronics that are factory-installed on the meter
body or electronics that can be installed remotely
from the meter body. It is not recommended to locally
mount the electronics in applications above 185°F
(85°C). PanaFlow gas meters have robust electronics
functionality to meet your application needs.
Electronics ordered with a PanaFlow Gas Meter
System are programmed with setup information
based on your application, so the system is ready
to use as soon as the meter body is installed. When
local electronics are integrated with the system,
the transducer wiring is already complete, further
simplifying the field installation. When remote
electronics are used, transducer cabling must be run
between the flow meter system and the flow meter
electronics.
Transit time ow measurement
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Proven Technology with Improved
Sound Isolation
A PanaFlow Gas Meter System employs similar robust
and reliable transducer technology used in thousands
of Panametrics flare gas applications around the
world. Ultra-high power transducers with enhanced
sound isolation are designed for conditions of extreme
condensate and impurities, and for continuous
operation even under the harshest of process
conditions.
The unique design ensures the highest field reliability
for continuous flow measurements over a wide range of
conditions.
High powered T18 transducers
Fast and Easy Installation
An integrated PanaFlow Gas Meter System is fast and
easy to install as all components are already installed
in the meter body. The system is factory assembled
and tested so it meets strict quality control standards.
A PanaFlow meter body is composed of a length of
pipe with flanged ends and transducer ports rated to
the application’s pressure requirements, so all the user
needs to do is bolt the end flanges into place in the
process pipeline.
Performance Specifications
Model Z1G Z2G
Number of Paths One Path Two Path
Flow Measurement Range (+/-)
2” (50mm) 0.5 to 250 ft/s (0.15 to 76 m/s) 0.5 to 250 ft/s (0.15 to 76 m/s)
3” (80mm) 0.5 to 250 ft/s (0.15 to 76 m/s) 0.5 to 250 ft/s (0.15 to 76 m/s)
4” (100mm) 0.5 to 250 ft/s (0.15 to 76 m/s) 0.5 to 250 ft/s (0.15 to 76 m/s)
6” (150mm) 0.5 to 250 ft/s (0.15 to 76 m/s) 0.5 to 250 ft/s (0.15 to 76 m/s)
8” (200mm) 0.5 to 200 ft/s (0.15 to 60 m/s) 0.5 to 210 ft/s (0.15 to 64 m/s)
10” (250mm) 0.5 to 170 ft/s (0.15 to 51 m/s) 0.5 to 180 ft/s (0.15 to 54 m/s)
12” (300 mm) 0.5 to 130 ft/s (0.15 to 39 m/s) 0.5 to 150 ft/s (0.15 to 45 m/s)
14” (350mm) 0.5 to 100 ft/s (0.15 to 30 m/s) 0.5 to 130 ft/s (0.15 to 39 m/s)
16” (400mm) 0.5 to 80 ft/s (0.15 to 24 m/s) 0.5 to 100 ft/s (0.15 to 30 m/s)
Meter Accuracy and Sensitivity - See Accuracy Notes below
Flow Velocity Accuracy from 5 ft/s (1.5 m/s) to Qmax - Note1
2” (50mm) to 16” (400mm) +-1.5% +-1%
Flow Velocity Sensitivity from 0.5 ft/s to 5 ft/s (0.15 to 1.5 m/s) – Note 1
2” (50mm) to 16” (400mm) +/- 0.075 ft/s (+/- 0.02 m/s) +/- 0.05 ft/s (+/- 0.015 m/s)
Repeatability – Notes 1 & 2
2” (50mm) to 16” (400mm) 0.5% of reading
Note 1:
Accuracy/repeatability specifications assume a final installation with fully developed flow profile (typically 20 diameters
upstream and 10 diameters downstream of straight pipe run), Reynolds Number > 5000 and single phase fluids.
Applications with piping arrangements that induce swirl (e.g., two out-of-plane elbows) may require additional straight
run and/or flow conditioning. For shorter straight pipe runs, consult the factory for a computational flow dynamic
evaluation.
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Operation and Performance
Fluid Types
Acoustically conductive gases
Flow Measurement
Correlation Transit-Time
Meter Body Materials
Low temperature carbon steel, SA352 Gr. LCC
Stainless steel, SA351 Gr. CF8M
Duplex stainless steel, SA995 Gr. CD3MWCuN
Flange Ratings
ASME: 150 lb, 300 lb or 600 lb
DIN: PN10, PN16, PN25; PN40 or PN63
Meter Body Certifications
PED Cat III, Module B+C2
CRN (All Canadian Provinces)
NACE MR01-75/MR-01-03
Calibration
All meters are air calibrated and supplied with a
calibration certificate.
Measurement Parameters
Mass flow, standard and actual flow, totalized flow, and
flow velocity
Enclosure
NEMA Type 4X explosion-proof and weatherproof (IP66)
• Standard: Epoxy-coated aluminum
• Optional: Stainless steel
Electronics Mounting
Local or remote mounting
Hazardous Area Certification
US/CAN: Class 1, Div. 1 Group B,C,D
ATEX: II 2 G Ex d IIB+H2 T6 IP66
IECEx: Ex d IIB+H2 T6 Gb IP66
Other hazardous area certifications are available upon
request.
Input Power
• Standard: 85 to 240 VAC
• Optional: 12 to 28 VDC, ±5%
Cable Entries
3/4” NPT
M20 adapters
Keypad
Built-in infrared, six-button keypad for full functionality
operation
Power Consumption
20 W maximum
Process Temperature Range
–40 to 302°F (–40 to 150°C)
Note: -40 to 257°F (-40 to 125°C) range when used with
pressure and temperature sensor option.
Ambient Temperature Range
• -4 to 140°F (–20 to 60°C)
• -40 to 140°F (–40 to 60°C) available in remote
mount upon request
Storage Temperature
-40 to +185°F (-40 to +85°C)
Pressure Range
Up to maximum allowable flange operating pressure at
temperature per ASME B16.5 or EN1092-1
Inputs/Outputs
Standard:
• Two 4-20 mA isolated outputs: 600 Ω
maximum load
• Two 4-20 mA inputs: pressure and
temperature
Optional:
• Two pulse or frequency outputs: optically
isolated, 3 A maximum, 100 VDC maximum,
1 W maximum, from DC to 10 kHz maximum
• Two alarm relays: 120 VAC, 28 VDC
maximum, 5 A maximum, DC 30 W
maximum, AC 60 VA maximum
Digital Communication
• Standard: RS485
• Optional: HART
• Optional: Modbus
• Optional: Foundation Fieldbus
®
®
®
Display Languages
English
Display
Optional: 2 line x 16 character backlit LCD display,
configurable to display up to four measurement
parameters in sequence
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Weights and Dimensions
Example Dimensions - 3” [80 mm] Flowcell (see below)
Flange
Rating
ASME
150# RF
ASME
300# RF
ASME
600# RF
Refer to the table below for weights and dimensions for all line sizes.
A C D X Y Z CX CY CZ
12.7
[322]
12.7
[322]
12.7
[322]
19.0
[481]
19.0
[481]
19.0
[481]
7.5
[190]
8.3
[209]
8.3
[209]
20.0
[508]
20.0
[508]
20.0
[508]
22.7
[576]
23.1
[586]
23.1
[586]
9.8
[247]
9.8
[247]
9.8
[247]
Reference Drawings
Drawing Number Drawing Description
712-2158 General arrangement drawing, PanaFlow ZXG, Local Mount
712-2160 General arrangement drawing, PanaFlow ZXG, Remote Mount
44.0
[1117]
44.0
[1117]
44.0
[1117]
34.7
[881]
35.1
[890]
35.1
[890]
33.8
[857]
33.8
[857]
33.8
[857]
Approx.
Weight
66.7 kg
70.7 kg
72.9 kg
“C”
Allow 12.0 [305] minimum recommended
maintenance on either side
15.5 [394]
“CX”
“A”
“X”
Allow 12.0 [305] minimum
“Z”
recommended maintenance
on either side
“CZ”
8.3 [212]
6.2 [157]
Notes: A 3”-2 Path flowcell is shown
as an example. See the drawings listed
above for details on other sizes.
All dimensions are inches [mm]
Allow 12.0 [305] minimum
“Y”
“CY”
above recommended
maintenance clearance
Port Configuration
for 2” and 3” Diametric-Dual Plane
∅“D”
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PanaFlow Gas Meter System Part Number
AAAA - B - CC D EE F G H - I - J - K L M N O - P - QQ - R - Z
Model:
PF8M PANAFLOW GAS ULTRASONIC FLOW METER SYSTEM
B: PATH:
Z1G
SINGLE PATH METER BODY
Z2G
DUAL PATH METER BODY
C: METER BODY SIZE:
02
2 in. (50 mm) METER BODY
03
3 in. (80 mm) METER BODY
04
4 in. (100 mm) METER BODY
06
6 in. (150 mm) METER BODY
08
8 in. (200 mm) METER BODY
10
10 in. (250 mm) METER BODY
12
12 in. (300 mm) METER BODY
14
14 in. (350 mm) METER BODY
16
16 in. (400 mm) METER BODY
D: PROCESS FLANGE RATING:
1
ASME 150# RF (WN)
2
ASME 300# RF (WN)
3
ASME 600# RF (WN)
E
EN 1092-1/PN 10 (WN/Type 11)
F
EN 1092-1/PN 16 (WN/Type 11)
G
EN 1092-1/PN 25 (WN/Type 11)
H
EN 1092-1/PN 40 (WN/Type 11)
J
EN 1092-1/PN 63 (WN/Type 11)
E: METER BODY MATERIAL:
CC
LOW TEMPERATURE CARBON STEEL (SA-352 GR. LCC)
S6
316 STAINLESS STEEL (SA-351 GR. CF8M)
SD
DUPLEX STAINLESS STEEL (SA-995 GR. CD3MWCuN)
F: METER BODY SCHEDULE:
4
SCHEDULE STD
5
SCHEDULE 40
7
SCHEDULE XS
8
SCHEDULE 80
F
SCHEDULE 10S
G
SCHEDULE 40S
H
SCHEDULE 80S
G: PAINTING:
1 2NO PAINT (SS & DSS METER BODY ONLY)
STANDARD PAINTING
H: SYSTEM DESIGN:
1
ASME B31.3, PED & NACE MR0175/MR0103
2
ASME B31.3, CRN & NACE MR0175/MR0103
3
ASME B31.3 & NACE MR0175/MR0103
I: PRESSURE & TEMPERATURE SENSOR:
0 PT SENSOR NOT INCLUDED
J: ELECTRONICS MOUNTING:
L
LOCAL MOUNTED ELECTRONICS - PROCESS TEMP -40°C to 85°C
R25
REMOTE MOUNTED ELECTRONICS WITH 25 FT REMOTE CABLE - PROCESS TEMP >85°C
R50
REMOTE MOUNTED ELECTRONICS WITH 50 FT REMOTE CABLE - PROCESS TEMP >85°C
R100
REMOTE MOUNTED ELECTRONICS WITH 100 FT REMOTE CABLE - PROCESS TEMP >85°C
R150
REMOTE MOUNTED ELECTRONICS WITH 150 FT REMOTE CABLE - PROCESS TEMP >85°C
K: ELECTRONICS ENCLOSURE:
1 2TYPE 7/ TYPE 4X EXPLOSIONPROOF AND WEATHERPROOF (IP66) EPOXY COATED
ALUMINUM ENCLOSURE
TYPE 7/ TYPE 4X EXPLOSIONPROOF AND WEATHERPROOF (IP66) 316 SS ENCLOSURE
L: POWER SUPPLY:
1 285-240 VAC INPUT POWER
12-28 VDC INPUT POWER
M: DIGITAL COMMUNICATION:
2
MODBUS DIGITAL OUTPUT
3
HART
4
FOUNDATION FIELDBUS
N: ADDITIONAL I/O:
0
NO ADDITIONAL I/OS
F
2 FREQUENCY OUTPUTS
T
2 TOTALIZER OUTPUTS
A
2 STANDARD ALARMS
(continued on next page)
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PanaFlow Gas Meter System Part Number (cont.)
AAAA - B - CC - D - EE - F - G - H - I - J - K - L - M - N - O - P - QQ - R - Z
O: CABLE ENTRIES:
1 2STANDARD 3/4” NPT (FEMALE)
M20 (FEMALE)
P: CALIBRATION
1 Calibration (Fluid: Air)
Q: PREAMP:
00
NO PREAMP
02
2X GAIN PREAMP
10
10X GAIN PREAMP
20
20X GAIN PREAMP
40
40X GAIN PREAMP
R: HAZARDOUS AREA
CERTIFICATION:
1
2
3
US/CANADA CLASS 1, DIVISION
1, GROUP B,C,D T6 Ta = -40°C
to + 60°C TYPE4X/IP66
ATEX CERT. FOR Exd IIB T6 Gb
IP66 Ta = -40°C to +60°C
IECEx CERT. FOR Exd IIB T6 Gb
IP66 Ta = -40°C to +60°C
Z: SPECIALS:
0 SNONE
SPECIAL
PF8M - Z2G - 06 - 1 - CC - 4 - 1 - 3 - 0 - L - 1 - 1 - 3 - 0 - 1 - 1 - 20 - 1 - 0
(EXAMPLE PART NUMBER
STRING)
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Panametrics.com
Copyright 2019. Baker Hughes Company. This material contains one
or more registered trademark of Baker Hughes Company and its
subsidiaries in one or more countries. All third-party product and
company names are trademarks of their respective holders.
920-677A
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