R117/2019-A-SE1-22.01

ANNEX to an OIML Certificate of Conformity

In respect of (type of instrument)

A family of Wayne Helix 1000 Fuel dispenser, Wayne Helix 2000 Fuel dispenser, Wayne Helix 4000 Fuel dispenser, Wayne Helix 5000 Fuel dispenser, Wayne Helix 6000 Fuel dispenser, for petrol, kerosene, diesel, ethanol, FAME/RME, HVO fuel, DEF (Diesel Exhaust Fluid), Windshield liquid or LPG, including ATC conversion device (optional).

Product names (see pictures 1-9):

• Wayne Helix 1000 Fuel dispenser

• Wayne Helix 2000 Fuel dispenser

• Wayne Helix 4000 Fuel dispenser

• Wayne Helix 5000 Fuel dispenser

• Wayne Helix 6000 Fuel dispenser

Product designation:

A and B side is recognized by removing one of the doors from the hydraulic cabinet and look at the sheet metal support for pumping units (suction-dispensers) or meters (remote-dispensers). There is the letter A or B punched in to the sheet metal as can be seen in the pictures below.

remote pump

Measuring system (fuel dispenser) description

A complete measuring system consists of one electronic module and one to six hydraulic modules. The hydraulic modules are placed in one or two cabinets (B2B). One electronic module can serve both cabinets, for example a combination of LPG and petrol. If one pump and air separator is serving more than one nozzle simultaneously the total maximum flowrate through these nozzles is limited by the air separator (90 l/min per air separator) and the volume sensor (according to "Volume sensor flowrate

range under "Measurement range"). For higher flowrate another hydraulic module have to serve the same nozzle. For further information see block diagram under "Hydraulic function modules".

Electronic module function

(iGEM) is an electronic subsystem and it consists mainly of: calculator, indicating device, and keyboard with preset. This module can handle up to 6 motors, 6 pulse transmitters (each handling a single equipped or a duplex volume sensor), 12 nozzles, 14 solenoid valves and in case of ATC one temperature compensation module. The electronic module is able to serve up to four customers at a time (called 4 User).

Hydraulic function modules

Measurement transducer function is a hydraulic subsystem and it consists mainly of: volume sensor (single equipped side A, single equipped side B or duplex) and pulse transmitter. In case of ATC automatic temperature compensation) each volume sensor is equipped with a temperature sensor, all connected to one temperature compensation module.

Pump and air separator function is a hydraulic subsystem and it consists mainly of: Compact Pumping Unit (CPU) including air separator, motor and non-return valve and for LPG a differential valve.

Regulation function is a hydraulic subsystem and it consists mainly of: solenoid valves for flow rate regulation, blending and on/off.

Delivery function is a hydraulic subsystem and it consists mainly of: hoses, nozzles and nozzle switch, this includes also satellite function.

Central pump function is a hydraulic subsystem and it consists mainly of: delivery of air free liquid according to OIML R117-1, item 5.1.3 and security valve.

If the measuring system is equipped with a central pump (an additional "R") an external (central) pump is used instead of an internal pump. The external system must comply with OIML 117-1, item 5.1.3 (i.e. it shall be equipped with an arrangement that prevents air to come into the system). The same applies to additive injection.

During verification it shall be possible to verify each volume sensor separately.

Block diagram describing permitted ways, and some restrictions, to produce one delivery product for one customer. Each such configuration shall be a subset of the diagram. To produce multiple delivery products for a customer the block diagram is used several times.

Components included

Wayne Helix Fuel dispenser families may include the following components.

Measurement transducer function

Volume sensor (petrol, petrol/ethanol mixtures, kerosene diesel or diesel/FAME/RME/HVO mixtures)

Wayne iMeter Duplex (DM2-2) or

Wayne iMeter Single equipped side A (DM2-1) or Wayne iMeter Single equipped side B (DM2-1) or Wayne iMeter2 Duplex (DM2-2) or Wayne iMeter2 Single equipped side A (DM2-1) or Wayne iMeter2 Single equipped side B (DM2-1) or Wayne $ \mathrm{X f l o}^{\mathrm{T M}} $ Duplex (magenta or silver id label) or Wayne $ \mathrm{X f l o}^{\mathrm{T M}} $ Single sided A (yellow id label) or Wayne $ \mathrm{X f l o}^{\mathrm{T M}} $ Single sided B (cyan id label)

Volume sensor (DEF) Volume sensor (DEF and Windshield liquid)

Wayne iMeter2 DM2-X DEF Wayne iMeter DM2-X UREA

Volume sensor (LPG) (including differential valve)

Petrolmeccanica LPG6000 MA (with mechanical adjustment)

Petrolmeccanica LPG6000 WA (without mechanical adjustment)

Tokheim GPL700

Pulse transmitter

FC=Flow Compensating, FCI = Flow Compensating Individual(XWIP), NFC= Not Flow Compensating (WIP)

Board temperature module, phase 2, Wayne WM044193-000X

0-1 pc****

Software Board temperature module, W&M checksum EB6A, or 7EA9

0-1 pc****

Temperature sensor, 0-10 pcs****

Wayne WM040341-0001

Pump and air separator function, not LPG

Compact Pumping Unit (CPU) $ ^{*} $

P = petrol, K = kerosene, D = diesel, E = ethanol, F=FAME/RME, H=HVO

Anti-Foaming pipe 0-1 pcs

DFS WR002578

(Can be installed in any above mentioned

pumping units)

Cover

(between CPU and meter) **

Wayne 167360 or Wayne WM000635 or Wayne WM009207 or Wayne WM011470 or Wayne WM011337 or Wayne WM018512-000X or Wayne WM011485-000X

Motor **, one per CPU

0,75 kW, 3-phase 400 V, 1400-1500 rpm or

0,75 kW, 3-phase 230 V, 1400-1500 rpm or

0,75 kW, 1-phase 230 V, 1400-1500 rpm or

1,1 kW, 3-phase 400 V, 1400-1500 rpm or

1,1 kW, 3-phase 230 V, 1400-1500 rpm or

1,1 kW, 1-phase 230 V, 1400-1500 rpm

Inlet suction check valve **

Wayne WM049971-000X

Additive liquid injection tank Wayne (START ITALIANA S.r.I. (ProGauge) gauge, 0-1pc WT010992

Pump and air separator function, LPG

Remote pump, submerged

Gas separator, non return valve and Petrolmeccanica:LP0735R01(WM058684) strainer

Vapour return line from gas separator and differential valve at volume sensor

Tokheim GPL Gas separator 950996

LPG Diff valve 943166

Non return valve 949695

Regulating function, solenoid valve, not LPG

• is replaced in dispenser variant

** is left out in dispenser variant

*** is added in dispenser variant

**** is added for ATC

Regulating function, LPG

Differential valve, liquid pressure at least 1 bar higher than vapour pressure Manometer, between volume sensor and differential valve

Included in volume sensor LPG6000, separate after the volume sensor for GPL700. Scale interval d $ \leq $ 2 bar

Delivery function

Hose, 16 mm (5/8") , max length 10 m

Hose, 16 mm (5/8") , max length 10 m

Elaflex Conti-Slimline 16

Hose, 16 mm (5/8") , max length 10 m

Hose, 16 mm (5/8") , max length 10 m

Elaflex Conti-Slimline 16 BIO

Elaflex Conti-Slimline 16 LT

Hose, 19 mm (3/4") , max length 10 m

Goodyear EN 1360, type 3, 16 bar

Hose, 21 mm (7/8") , max length 10 m

Goodyear Hardwall Petrol Hose B.S. 3395/1989 type 3

Hose, 21 mm (7/8") , max length 6 m

Elaflex Conti-Slimline 21

Hose, 21 mm (7/8"), max length 10 m mmq = 5,01

Elaflex Conti-Slimline 21 - COAX (vapour recovery)

Hose, 21 mm (7/8") , max length 10 m

Hose, 21 mm (7/8") , max length 10 m

Elaflex Conti-Slimline 21 - COAX (vapour recovery)

Hose, 21 mm (7/8") , max length 6 m

Elaflex Conti-Slimline 21 BIO

Hose, 21 mm (7/8"), max length 10 m mmq = 5,01

Elaflex Conti-Slimline 21 LT

Elaflex Conti-Slimline 21 LT (vapour recovery)

Elaflex Conti-Slimline 21 LT (vapour recovery)

Hose, 25 mm (1") , max length 6 m

Hose, 25 mm (1") , max length 10 m, mmq = 5,01

Elaflex Conti-Slimline 25 LT

Hose, 25 mm (1") , max length 10 m

Elaflex Conti-Slimline 25 LT

Hose, 32 mm $ ( 1^{1} / 4^{*} ) $ , max length 7 m mmq = 5,01

Hose, DEF, max length 6 m, mmq = 5,0 I

Goodyear EN 1360, type 3, 16 bar

Hose, LPG, max length 6 m, mmq = 5,0 I

Hose, 25 mm (1")，max length 40 m，mmq=201 max flow rate >60 LPM

Elaflex HD 32

Elaflex LPG ID=16, max working p=25 bar

Hose, 32 mm (11/4") , max length 40 m, mmq = 201, max flow rate >60 LPM

Elaflex LPG ID=13, Elaflex LPG ID=16 or Elaflex LPG ID=19, max working p=25 bar

Nozzle 40-70 I/min

Nozzle 40-70 I/min

Nozzle 90-200 I/min

Nozzle 40-70 I/min, mmq = 5,0 I

Nozzle 90-130 I/min

Nozzle 40 I/min, mmq = 5,0 I

Nozzle, DEF

Nozzle, DEF

Elaflex ZVA slimline or OPW 21 or equivalent

Elaflex HD 25 C winded on Reel

Elaflex HD 32 C winded on Reel

Elaflex ZV 19 or equivalent

Nozzle, LPG

Elaflex ZVA slimline TMV"DRIP-STOP" or equivalent

OPW ACN or AVN or equivalent

Elaflex ZVA 25,1" or equivalent

Elaflex ZVA 32, 11/4" or equivalent

Elaflex ZVA SS AdBlue or equivalent

Elaflex ZVA AdBlue LV or equivalent

Elaflex ZVG 2, Elaflex Gasguard LPG, Boessenkool LPG, OPW LPG or equivalent

Components included for electronic calculator function, iGEM

CPU-board,0,1 or 2 (only for 4User) pc

Wayne WM001908-0001 or

Wayne WM001908-0002 or

Wayne WM001908-0005 or

Wayne WM001908-0006 or

Wayne WM001908-0011 or

Wayne WM001908-0012 or

Wayne WM001908-0015 or

Wayne WM001908-0016 or

Wayne WM069506-0001

Software CPU board, 0 or 1 pc

62D1 (Rev 12.xx) or 5A73 (Rev 15.xx) or D3CD (Rev 16.xx)

Software CPU board for dispensers

W&M checksum C10C (Rev 13.xx)

with iGEM printer, 0 or 1 pc

iGEM expansion board, 0-1 pc

Wayne WM044451-0001 or WM044451-0002

Nozzle Switch Converter (0 or 1 pcs)

Wayne WU004202-0001 or WU006752

Components included for electronic calculator function, iGEM 2

CPU-board,0,1(1 to 4 User) pc

Wayne WM044721-0001 or

Wayne WM044721-0002 or

Wayne WU020193-0001

I/O-board 0,1 pc

WM054392-0001 or WU016738-000X

Bootloader CPU board, 0 or 1 pc

F92E 4B0B (Rev 007.XXX.XXX)

Dispenser App. SW CPU board, 0 or 1 pc

2FC0 77BE (Rev 017.XXX.XXX) or F0E5 8123 (Rev 18.XXX.XXX)

iGEM2 expansion board, 0-1 pc

Wayne or DFS WM070224-000X

Ethernet communication board

Wayne WM067037-0001

Control board, Additive injection, 0-1pc

Wayne WM067598-000X

Components included for electronic function, iGEM & iGEM 2

Isolated interface communication board, 0-1 pcs Wayne WM004360

ATCL/RS422 communication board, 0-1 pcs Wayne WM001827

IFSF/LON communication board, 0-1 pcs Wayne WM008766

NPCL/SINP communication board, 0-1 pcs

Wayne WM008750

iGEM-ISB board (pulse transmitter), 1-3 pcs

TTL/CAN converter, 0-1 pc****

Wayne WU004200-0001 or WU04200-0002 or WM002450 or WM069425-000X

Software TTL/CAN converter, 0-1 pc****

Display board complete (volume, price & upd), 1-4 pcs)

Wayne WU007564-0001

W&M checksum 3FBD or 7E60 or 082A or 55AB

Display module TN neg (volume, price), 1-4 pcs

Wayne WU007562-0001 or WM065705-0001 or WM084971-0001 or WM063229 or WU015222-0001 or WM069974-0001

Display module TN neg (volume, price & upd), 1-4 pcs

POLYTRONIX, PS-030ATL-02, REV.A (WM040823-0002)

PS-039ATL-02 (WM053326-0001), upd under or PS-044ATL-02 (WM056449-0001), upd right or PS-045ATL-02 (WM056449-0002), upd left or

Display board (unit prices), 1-2 pcs

Display module TN neg (unit price), 1-12 pcs

Wayne WU007563-0001 or WM062874

POLYTRONIX,PS-030ATL-02,(WM040824-0007) or POLYTRONIX,PS031ATL-02,(WM040824 -0008) or POLYTRONIX,PS-032ATL-02,(WM040824 -0009)

Nozzle Switch Interface (0 or 1 pcs)

Wayne WU004201-0001 or WU006751-000X

Control Board iGEM printer (0,1 or 2)

Innovision 10600101100G (WR001816)

iGEM Printer (0,1 or 2)

Fujitsu FTP-629MCL374-R (WR001815)

Board; Connector, Suction pump, IEC**

Wayne WU004985

Board; Connector, dispenser, IEC***

Wayne WU004987

Board; Connector, without heating regulation Wayne WXXXXXXX-000X

and surge protection

Power supply,1 pc

Channel Well Technology, UAS150B, 150 W Max

(WM027313-0001)

Heater including thermostat, 0-1 pc Wayne WM044405 (290 W) or equivalent

(mandatory for payment terminal) approved by Wayne

Payment or Media platform tested according to OIML R117:2019 (by an OIML test laboratory) to show evidence not disturbing the pump calculator, may be installed in the dispenser, using the dispenser power supply.

Optional equipment and functions

• ATC conversion device (Not for DEF, Windshield liquid and HVO)

• Pre-set of volume or price ******

• Volume totalizer

• Blending (designation only e g 92, 95, 98 octane not 50/50, 70/30 etc)

• Satellite (SAT and MASTER enable button in case of direct sales)

• When using the measuring system to refill aircrafts or helicopters it is allowed to use a water elimination device according to OIML 117-1 5.8.1.2 (E 2019) between meter and hose. For safety reasons it is required to drain the device on a regular base by opening the drain valve. This has to be done by a trained service technician on the measuring system under pressure with closed nozzle. This is to ensure that the hydraulic system is always filled with fuel. The drain valve has not to be sealed.

• Additive injection function for injecting additive liquids to the fuel before the meter. A tank gauge meter is required in the storage tank for additive liquid to avoid injection of air into the fuel. See requirements for central pump function.

If additive liquid is injected before the air separator, the additive is not subject to MID requirements.

Integrated equipment and functions not subject to legal metrology control

Vapour recovery system with vapour pump, regulating proportional valves and an electronic board (for example Bürkert control board, Dover Ivory power pump control or Dover Global VR) connected to the iGEM CPU board. The vapour flow is controlled by the electronic board or the iGEM CPU board. Optionally also a vapour recovery monitoring system consisting of a Vapour meter and belonging Intrinsic safe barrier may be used. Means for vapour recovery must not influence the accuracy of measurements such that the maximum permissible error is exceeded.

For DEF, heating is installed to keep the liquid from freezing. As an option a pump circulates liquid downstream the meter between deliveries, through the coax hose to a container (max volume 2,55 litre in circulation system) to avoid freezing.

• is replaced in dispenser variant **** is added in dispenser variant

** is left out in dispenser variant ***** is added for ATC

***** can be controlled through key pad on dispenser or by softkey on payment/media terminal

Rated operating conditions

Volume of liquid fuel expressed in litre. If ATC conversion device is included (not for DEF, Windshield liquid and HVO), the volume at base condition (15 $ ^{\circ} \mathrm{C} $ ) is displayed. The calculations are based on OIML R63 (API/ASTM 54B) except for petrol/ethanol mixtures where Verfahren 1 according to PTB-1.5-40520004 dated April 11, 2011, is used.

iMeter DM2-X UREA

0,2 to 70 I/min

4 to 70 I/min only for FAME/RME

1 to 40 I/min only for Windshield liquid

2 to 40 I/min only for DEF

The ratio between maximum and minimum flow rate should be at least 10 for single quality and 5 for blending quality, DEF, Windshield liquid and LPG.

Environments classes / influence quantities

Mechanic: class M1

Electromagnetic: class E1

Humidity: class H3

Ambient temperature limits: -40 $ ^{\circ} \mathrm{C} $ to $ +55^{\circ} \mathrm{C} $ (tested to $ +60^{\circ} \mathrm{C} $) $ -25^{\circ} \mathrm{C} $ to $ +55^{\circ} \mathrm{C} $ for DEF, Windshield liquid and LPG $ +5^{\circ} \mathrm{C} $ to $ +55^{\circ} \mathrm{C} $ for iGEM printer

Interfaces and compatibility conditions

Interface for vapour recovery systems.

Communication between fuel dispenser and other parts of a measuring system (e g POS-systems) using one of the following non-reactive interfaces is evaluated and approved. (This does not imply that the complete self-service arrangement fulfils the requirements of OIML R117):

Most protocols do not include "unit", for example "volume @ 15 $ ^{\circ} \mathrm{C} $ ". Instead this has to be handled during set up of the station controller and dispensers. It must be possible for the measuring system to print "@ 15 $ ^{\circ} \mathrm{C} $ " on the ticket.

When the dispenser is a part of a self-service arrangement the following requirements have to be fulfilled:

• The communication between the dispenser and the self-service device/devices has to be through one of the interfaces/protocols listed above.

• The connection has to be verified by the installer so the metrolgical data are presented in a way, whether it is an indicated, printed or memorized result, that meets the requirements of OIML R117.

Control of the measuring tasks of the instrument in use

For dispensers with ATC the volume at base condition is displayed in normal working mode. Alternative 1: When verifying the dispenser as a "black box", the delivered volume measured in a volume standard $ V_{t\text{ref}} $ is converted to volume at base condition $ V_{15} $ using $ V_{15\text{ref}}=V_{t\text{ref}} $ x VCF where VCF, volume correction factor, is based on the quality and temperature t of the liquid. Alternative 2: When the display is showing ATC Revision and CRCs press the CRC button and the W&M-mode is active for 30 minutes (or until next push on the CRC-button) displaying $ V_{t}, $ $ V_{15}, $ temperature t, product and density. A test well (inner diameter 4 mm) can be used for the reference temperature sensor.

Amount display Product and density for primary meter

Volume display: Product and density for secondary meter

UPD: Blank

Amount display Uncompensated volume, $ V_{t} $

Volume display: Temperature for primary meter (momentary value)

UPD: Temperature for secondary meter (momentary value)

Amount display Volume at 15 $ ^{\circ} \mathrm{C} $ $ V_{1 5} $ altered with product and density for primary meter

UPD: Temperature t (mean value, volume weighted)

LPG: A thermometer well is installed upstream the meter, to be used during verification

Identification Software for iGEM

The metrological software is identified by the checksum (W&M CRC value), which can be accessed by pressing the CRC button on the iGEM & iGEM 2 calculator CPU board. (Upon this also the program CRC values and software version number are indicated at the dispenser display.)

Identification Software for iGEM 2

The metrological software is identified by the checksum (W&M CRC value), which can be accessed by pressing the CRC button on the iGEM 2 calculator CPU board. The software versions and CRC values are shown in the following sequence:

• The first indicating on the sales volume display after the CRC button is pushed is the Firmeware version of the dispenser application.

• After a few seconds the display will change and show the CRC for complete program both LR and non LR is included.

• After an other few seconds the display will change again and the amount and volume display will show the W&M-CRC for the LR part of the code and the UPD will show LrCrC. It will looks like this:

• Then will the display change again and show the Bootloader Firmware version.

• After that the Bootloader Firmware CRC. The UPD will show b CrC

• When the display change again it will show the ATC information

Amount display: W&M CRC value on board temperature module

Volume display: Revision of board temperature module

UPD: AtC

Calibration-/adjustment procedure

• Dispensers with iMeter volume sensors are calibrated/adjusted according to Wayne manual W8-461191 (English version, other languages may be available).

• Dispensers with iMeter2 volume sensors are calibrated/adjusted according to Wayne manual WM064180 (English version, other languages may be available)

• Dispensers with Xflo $ ^{\mathrm{TM}} $ volume sensors are calibrated/adjusted according to Wayne manual WM018625 (English version, other languages may be available).

• Dispensers with LPG6000 volume sensors are calibrated/adjusted according to Wayne manual WM059375 (English version, other languages may be available).

RISE Research Institutes of Sweden AB | Certification

• Dispensers with GPL700 volume sensors are calibrated/adjusted according to Wayne manual WM078856 (English version, other languages may be available)

• ATC is calibrated/adjusted according to Wayne manual WM055095 (English version, other languages may be available, contact Wayne local technical support).

Sealing

The dispenser is sealed according to pictures in the following pages.

ATC: The board temperature module and temperature sensors are sealed

LPG: The volume sensor, pulser, differential valve, pressure calibration screw (if present) of the differential valve and manual valves in vapour return line are sealed (or labelled)

• Name plate (aluminium or vinyl sticker) is sealed to the frame with a small "vandal proof" label.

• Electromechanical totalizer is sealed if used as a basis for legal transaction.

• The following components are not sealed, but protected/identified in the following way:

• The pulsers are uniquely electronically identified by the calculator, including a presence check.

NOTE: When using wire through screws etc. to make seals, ensure that the wire is as short and taut as possible. The closing stamp must be placed such as it is within reach for pressing with intended pliers, without dismantle surrounding components with the help of tools. The closing stamp can be of any suitable material.

Sealing of temperature sensors on iMeter

Sealing of temperature sensors on iMeter2

Sealing of temperature sensors on LPG 6000

Sealing of temperature sensors on GPL 700

Sealing of hydraulic unit with iMeter volume sensor

Sealing of hydraulic unit with $ \mathrm{Xflo}^{\mathrm{TM}} $ volume sensor

SEALING OF PULSER AND CALIBRATION FLAPS

SECTION SHOWING PLACEMENT OF SEALING

WHERE FOR SEALING OF PULSER AND CALIBRATION

FLAPS, PLACE SEALING AS CLOSED TO SEALED PARTS AS

POSSIBLE.

Sealing of dispenser variant (central pump) with iMeter volume sensor

Sealing of dispenser variant (central pump) with $ \mathrm{Xflo}^{\mathrm{TM}} $ volume sensor

Sealing of dispenser with iMeter2 volume sensor

Sealing of LPG 6000 volume sensor

5. Sealing of the differential valve

6. Sealing between meter and differential valve against opening

7. Meter sealing to the dispenser frame

8. Sealing of the adjustment device

9. Sealing of the meter against opening

10. Sealing of the connection between meter and pulser against opening

11. Sealing of the differential valve

12. Sealing of the Meter electronic calibration/against opening

13. Sealing of the connection between meter and pulser against opening/removal

Sealing of GPL 700 Volume sensor

Example of sealing of iGEM 2 electronic module with electromagnetic totalizers (if used as a basis for legal transaction). Even though no electromagnetic totalizer is connected the sealing have to include the CPU-module and the sealing screw in detail 1

DETAIL A - SEALING OF CPU OPENING AND BATTERY

DETAIL B - SEALING OF CPU BOARD, I/O BOARD AND PROGRAM LOAD SWICH OPENING

DETAIL C - SEALING OF EMT OF EMT REMOVAL

DETAIL D - SEALING OF EMT CABLE CONNECTION

Example of sealing of iGEM 2 Generation 2 electronic module with electromagnetic totalizers (if used as a basis for legal transaction) Even though no electromagnetic totalizer is connected the sealing have to include the CPU-module and the sealing screw in detail A & B

Information to be borne by and to accompany the instrument

The name plate mounted on the instrument shall contain the following information:

• the OIML certificate number

• Space for verification mark

• the name or trademark

• the serial number and year of manufacture

• the designation or type name (according to "Product names and designation")

• Type of Liquid or Viscosity class (not for LPG, DEF, and Windshield liquid) $ ^{*} $

• the temperature range of the dispensed liquid

• the accuracy class

• max. flow rate Qmax

• min. flow rate Qmin

• minimum measured quantity

• max. pressure Pmax

• the ambient temperature range

• mechanical class

• electromagnetic class

• humidity class

• Nominal value of the AC voltage supply

• depending of volume sensor

Further inscriptions, if necessary

Minimum measured quantity shall be inscribed on the "indicator face". If ATC is included, "@ 15 $^{\circ}C"$ shall be marked adjacent to the volume display.

Display for ATC including "@ 15 $^{\circ}C"$

Alt Display for ATC including "@ 15 $^{\circ}C"$