PanaFlow gas meter system
Panametrics ultrasonic flow meters for gas
The PanaFlow gas meter system is a complete ultrasonicflow meter offering for gas applications with a unique
combination of accuracy, rangeability, and reliability in arobust 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.

Features and benefits
No drifting, no periodic
calibration required

No loss of process control, nodowntime, no expense from calibration,and optimization of assets

No pressure drop

No wasted energy from running apump or need to purchase a larger sizepump

No restriction in the pipe

Contamination will not affect meter’smeasurement (drifting) or cause any
damage to meter

Applications

No ﬁlters or strainers

PanaFlow gas flow meters can be used in applications suchas:Bi-directional
measurement• Biogas• Natural gas production• Vent gas• Waste gas• Shale gas• Coal-seam gas wellhead• Vapor recovery• Fuel gas

No maintenance cost
No additional meters required

No moving parts

No loss of process control, nodowntime, no expense from calibration,and optimization of assets

Explosion-prooftransducer design

More power to transducers at highervoltages, less risk of attenuation in fluid

Full ultrasonic product line

Meets more needs with full productportfolio; one manufacturer for
ultrasonic flow meters

Reliable flow measurement that iseasy on your budget

The PanaFlow gas portfolio represents a new generation ofPanametrics ultrasonic flow meters. Offered in one-pathor two-path wetted versions, PanaFlow gas meters bring
together Panametrics ultrasonic expertise with the benefits ofultrasonic technology for affordable, high performance flow
measurement.
Unlike other flow measurement technologies, the PanaFlow
meters do not require maintenance since they do not haveany 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, tuningor corrections. PanaFlow gas meters provide a lower overall
total cost of ownership, superb reliability, and excellent
performance.

Transit-time flow measurement

In this method, two transducers serve as both ultrasonicsignal 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, eachtransducer 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-timeupstream. 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.

Designed for high impurity gas
measurements

Each PanaFlow gas meter is a complete ultrasonic ﬂow
metering system specifically designed for the measurementof gases with high levels of impurities. Engineered to thehighest levels of reliability and dependability, it is designedwith 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.

Local or remote electronics

PanaFlow gas meters are offered with local or remote
electronics that are factory-installed on the meter bodyor electronics that can be installed remotely from themeter body. It is not recommended to locally mount theelectronics in applications above 185°F (85°C). PanaFlow gas
meters have robust electronics functionality to meet yourapplication needs.
Electronics ordered with a PanaFlow gas meter system
are programmed with setup information based on yourapplication, so the system is ready to use as soon as
the meter body is installed. When local electronics areintegrated with the system, the transducer wiring is alreadycomplete, further simplifying the field installation. Whenremote electronics are used, transducer cabling must be
run between the flow meter system and the flow meterelectronics.

Transit time flow measurement

Proven technology with improved
sound isolation

Fast and easy installation

An integrated PanaFlow gas meter system is fast and easy
to install as all components are already installed in themeter body. The system is factory assembled and tested soit meets strict quality control standards. A PanaFlow meterbody 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.

A PanaFlow gas meter system employs similar robust
and reliable transducer technology used in thousands ofPanametrics flare gas applications around the world. Ultrahigh power transducers with enhanced sound isolation
are designed for conditions of extreme condensate andimpurities, and for continuous operation even under theharshest of process conditions. The unique design ensures
the highest field reliability for continuous ﬂow measurements
over a wide range of conditions.

High powered T19 transducers

Performance specifications
Model
Number of paths

Z1G

Z2G

One Path

Two Path
Flow measurement range (+/-)

2" (50mm)

0.5 to 200 ft/s (0.15 to 60 m/s)

0.5 to 200 ft/s (0.15 to 60 m/s)

3" (80mm)

0.5 to 200 ft/s (0.15 to 60 m/s)

0.5 to 200 ft/s (0.15 to 60 m/s)

4" (100mm)

0.5 to 200 ft/s (0.15 to 60 m/s)

0.5 to 200 ft/s (0.15 to 60 m/s)

6" (150mm)

0.5 to 200 ft/s (0.15 to 60 m/s)

0.5 to 200 ft/s (0.15 to 60 m/s)

8" (200mm)

0.5 to 200 ft/s (0.15 to 60 m/s)

0.5 to 200 ft/s (0.15 to 60 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 - note 1
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 and 2
2" (50mm) to 16" (400mm)

0.5% of reading
Percent methane - note 22” (50mm) to 16” (400mm)

2%

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 outof-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.
Note 2:
Percent methane in carbon dioxide is only available with percent methane in carbon dioxide software for biogas.

Operation and performance
Fluid types

Input power

Acoustically conductive gases• Standard: 100 to 240 VAC

Flow measurement
Correlation transit-timeMeter body materials
Low temperature carbon steel, SA352 Gr. LCC Stainless steel,SA351 Gr. CF8M Duplex stainless steel, SA995 Gr. CD3MWCuN• Optional: 12 to 28 VDC, ±5%

Cable entries
3/4" NPT
M20 adapters

Display languages

Flange ratings

EnglishASME: 150 lb, 300 lb or 600 lb
DIN: PN10, PN16, PN25; PN40 or PN63

Display

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

Optional: 2 line x 16 character backlit LCD display,configurable to display up to four measurement parameters
in sequence

KeypadBuilt-in infrared, six-button keypad for full functionality
operationPower consumption
20 W maximum

Process temperature range-40 to 185 °F (–40 to 85°C) local mount% methane (with percent methane in carbon dioxide
software for biogas)-40 to 302 °F (–40 to 150°C) remote mount

Enclosure-40 to 140 °F (–40 to 60°C)

NEMA Type 4X explosion-proof and weatherproof (IP66)• Standard: Epoxy-coated copper-free aluminum• Optional: Stainless steel

Electronics mounting
Local or remote mounting

Hazardous area certification
US/CAN:Class I, Division 1, Groups B, C, D; T6…T3C NEMA 4X, IP66, single
sealClass I, Zone 1, AEx db IIB+H2 T6…T3C Gb NEMA 4X, IP66, single
seal
ATEX:
II 2 G Ex db IIB+H2 T6…T3 Gb IP66
IECEx:
Ex db IIB+H2 T6…T3 Gb IP66
Other hazardous area certifications are available uponrequest.

Ambient temperature range
Storage temperature-40 to +185 °F (-40 to +85°C)

Pressure range
Up to maximum allowable flange operating pressure attemperature per ASME B16.5 or EN1092-1

Inputs/outputsStandard:• 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 Amaximum, 100 VDC maximum, 1 W maximum, from DC to 10kHz maximum• Two alarm relays: 120 VAC, 28 VDC maximum, 5 Amaximum, DC 30 W maximum, AC 60 VA maximum

Digital communication• Standard: RS485• Optional: HART®
• Optional: Modbus®
• Optional: Foundation Fieldbus®

Weights and Dimensions

Weight and dimensions
Example Dimensions - 3” [80 mm] Flowcell (see below)
Flangerange

FlangeRatingExample dimensions - 3" (80 mm) flowcell (see below)

AC12.7[322]
19.0

19.0
[481]
7.5

7.5
20.0
[190] 20.0 [508]

12.7
19.0
[322]

19.0
8.3
[481]

8.3
20.0
[209]20.0 [508]

ASME
12.7
12.7
600# RF 19.0
[322]

19.0
19.0
[481]

8.3
20.0
[209]20.0 [508]A

ASME
12.7150# RFC

ASME
150# RF(322)

(481)

ASME
300# RF(322)

(481)

ASME
600# RF(322)

(481)

ASME
12.7300# RF

D

(190)

(209)
(209)

DX

XYZ

22.7[576]
22.7

9.8
[247]
9.8

44.0
34.7
[1117] 44.0[881]

23.1
23.1
[586]

9.8
9.8
[247]

44.0
35.1
[1117] 44.0[890]

23.1
23.1
[586]

9.8
9.8
[247]

44.0
35.1
[1117] 44.0[890]

Y

(508)

(576)

(508)

(586)

(508)

(586)

Z

(247)

(247)
(247)

CX

CX

CY

CZ

CY

Approx.
WeightCZ

Approx.
weight33.8(857)

66.7 kg

33.8
(857)

70.7 kg

33.8
(857)

72.9 kg

33.8
[857]
34.7

66.7 kg

33.8
35.1
[857]

70.7 kg

33.8
35.1
[857]

72.9 kg(1117)(881)(1117)(890)(1117)(890)

Refer to the table below for weights and dimensions for all line sizes.

Refer to the table below for weights and dimensions for all line sizes.
Reference drawings
Drawing number

712-2158

General arrangement drawing, PanaFlow ZXG, Local Mount

Drawing Number

712-2160

Drawing description

Reference Drawings

Drawing Description

General arrangement drawing, PanaFlow ZXG, Remote Mount712-2158

General arrangement drawing, PanaFlow ZXG, Local Mount712-2160

General arrangement drawing, PanaFlow ZXG, Remote Mount“CX”
Allow 12.0 [305] minimum recommended
maintenance on either side

Notes: A 3”-2 Path flowcell is shownas an example. See the drawings listed
above for details on other sizes.

“A”

All dimensions are inches [mm]

“Z”

“CZ”
Allow 12.0 [305] minimum
recommended maintenanceon either side

8.3 [212]“X”

6.2 [157]

15.5 [394]

“C”
“Y”

∅“D”

Port Configurationfor 2” and 3” Diametric-Dual Plane“CY”
Allow 12.0 [305] minimum
above recommended
maintenance clearancePanaFlow ZxG part numberAAAABBBCCDEEFFFGHIJKKKKLLMNOPQRSTUZ

A: ModelPF8M Panaflow gas ultrasonic flow meter system with XGM868i transmitter
PF8F Panaflow gas ultrasonic flow meter system with XGF868i transmitter
B: PathZ1G
Z2GSingle path meter body
Dual path meter body
C: Meter body size
02
03
04
06
08
10121416

2 in. (50 mm) meter body
3 in. (80 mm) meter body
4 in. (100 mm) meter body
6 in. (150 mm) meter body
8 in. (200 mm) meter body
10 in. (250 mm) meter body
12 in. (300 mm) meter body
14 in. (350 mm) meter body16 in. (400 mm) meter body
D: Process flange
123EFGHJ

ASME 150# RF (WN)
ASME 300# RF (WN)
ASME 600# RF (WN)
EN 1092-1/PN 10 (WN/Type 11)
EN 1092-1/PN 16 (WN/Type 11)
EN 1092-1/PN 25 (WN/Type 11)
EN 1092-1/PN 40 (WN/Type 11)
EN 1092-1/PN 60 (WN/Type 11)
E: Meter body material
CC
S6SD

Low temperature carbon steel (SA-352 GR. LCC)
316 Stainless steel (SA-351 GR. CF8M)
Duplex stainless steel (SA-995 GR. CD3MWCuN)
F: Meter body schedule
STD0400XS
08010S40S80S
CUS

Schedule STD
Schedule 40
Schedule XS
Schedule 80
Schedule 10S
Schedule 40S
Schedule 80S
Schedule per PN rating
G: System rating
ACP

ASME B31.3, NACE MR0175/MR0103
ASME B31.3, CRN, NACE MR0175/MR0103
PED, NACE MR0175/MR0103
H: PaintingA
G

No paint (SS and DSS meter body only)Standard painting
I: Documentation
01
2

No NDE documentation
Standard NDE documentation
PMI and NDE documents, wetted parts only
J: Transducer o-ring materials
VEM

Viton o-rings (most applications)
EDPM o-ring
M MARKEZ (FFKM) o-ring
K: Electronics mounting
000L
0R25
0R50
R100Local mounted electronics - process temp to 85°C
Remote mounted electronics with 25 ft remote cable - process temp to 150°C
Remote mounted electronics with 50 ft remote cable - process temp to 150°C
Remote mounted electronics with 100 ft remote cable - process temp to 150°c
L: Electronics enclosure
ALSS

Type 7/type 4X explosionproof and weatherproof (IP66) epoxy-coated copperfree aluminum enclosure
Type 7/type 4X explosionproof and weatherproof (IP66) 316 SS enclosure
M: Cable entries
12Standard 3/4” NPT (female)
M20 (female)
N: Power supply
12(continued on next page)

240 VAC input power
12-28 VDC input powerPanaFlow gas meter system part numberAAAABBB

CCDEEFFFGHI

J

KKKKLL

M

NO

PQ

R

S

TU

Z

O: Pressure and temperature
0PT sensor not included
P: Inputs/outputs
0F
TA

No additional inputs or outputs
2 frequency outputs
2 totalizer outputs
2 standard alarms
Q: Digital communication
234Modbus/RS485
Hart
Foundation Fieldbus
R: Calibration
102103104106108110112114116

Air calibration - 2in (50 mm)
Air calibration - 3in (80 mm)
Air calibration - 4in (100 mm)
Air calibration - 6in (150 mm)
Air calibration - 8in (200 mm)
Air calibration - 10in (250 mm)
Air calibration - 12in (300 mm)
Air calibration - 14in (350 mm)
Air calibration - 16in (400 mm)
S: Preamplifier
0002
102040No preamplifier
2X gain preamplifier
10X gain preamplifier
20X gain preamplifier
40X gain preamplifier
T: Hazardous areacertification
123US/CanadaCertificate
ATEX Certificate
IECEx Certificate
U: Software01StandardPercent
methane incarbon dioxide (biogas)
software
Z: Specials0S

PF8M

Z2G061(Example part number string)

CC040

A

10V0001

AL

1103010200

10NoneSpecial

Panametrics, a Baker Hughes business, provides solutions in
the toughest applications and environments for moisture,oxygen, liquid and gas flow measurement.
Experts in flare management, Panametrics technology also
reduces flare emissions and optimizes performance.
With a reach that extends across the globe, Panametrics’
critical measurement solutions and flare emissions
management are enabling customers to drive efficiency
and achieve carbon reduction targets across criticalindustries including: Oil & Gas; Energy; Healthcare; Water andWastewater; Chemical Processing; Food & Beverage andmany others.
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