Oval EL0137 User manual

1
Pulse relay field type totalizer
(Explosionproof)
MODEL：EL0137
Ins. No. E− 126−3-E
Thank you for adopting the pulse relay field type totalizer (hereafter, totalizer).
This instrument is produced and shipped under strict quality management by our company. To use the product
properly, this document explains the precautions required for proper handling. Before using the product, be sure
to read this instruction manual carefully.
Keep this document at hand for future reference.

E-126-3-E
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CONTENTS
1. PRECAUTIONS ON HANDLING.....................4
1.1 Confirmation of name plate ........................4
1.2 Precautions on transportation.....................5
1.3 Precautions on storage...............................5
1.4 Precautions on use conditions....................5
1.5 Precautions on installation location ............5
1.6 Precautions on
turning ON the power supply......................6
1.7 Note on returning the product.....................6
2. OUTLINE.........................................................6
3. SPECIFICATIONS AND PERFORMANCE .....7
3.1 Standard specifications ..............................7
4. NAME OF EACH PART AND EXTERNAL
DIMENSIONS..................................................8
5. EXTERNAL WIRING GLAND........................11
5.1 Close-up plug ...........................................12
5.2 Replacement of external wiring gland and
close-up plug ............................................12
6. MOUNTING POSTURE.................................13
7. EXTERNAL GROUNDING TERMINAL AND
INTERNAL GROUNDING TERMINAL...........15
8. INTERNAL WIRING CONNECTION .............16
9. OPERATION..................................................17
9.1 Display unit ...............................................17
9.2 Optical switches........................................17
9.2.1 Activate the optical switches...............18
9.2.2 Key lock of optical switches................18
9.2.3 Operation by push button ...................18
9.2.4 Display of reset integration
/ accumulated total or instantaneous
flow rate ..............................................19
9.2.5 Clearance of totalized value ...............19
9.2.6 Display of accumulated total...............19
9.2.7 Instantaneous flow rate bar chart ......20
9.3 Operator alarm .........................................20
9.3.1 Battery level alarm ..............................20
10. PARAMETER SETTING..............................21
10.1 To enter the parameter setting mode......21
10.2 Structure of parameter............................21
10.3 Scroll the parameter ...............................22
10.4 To change or select a value....................23
10.5 To return to the measurement mode ......23
10.6 List of parameters...................................24
10.6.1 Parameter 1. TOTAL.........................25
10.6.2 Parameter 2. RATE...........................25
10.6.3 Parameter 3. DISPL..........................26
10.6.4 Parameter 4. METER .......................26
10.6.5 Parameter 6. OTHERS .....................27
10.7 Procedure for setting parameter.............28
11. MAINTENANCE AND INSPECTION ...........30
11.1 Removal of front lid.................................30
11.2 Install the display unit..............................31
11.3 Installation of front lid..............................31
11.4 Replacement of battery...........................32
11.5 How to discard the battery ......................34
11.6 Test and adjustment of EL0137 ..............34
11.7 Precautions on
turning ON the power supply..................34
11.8 Error code ...............................................35
12. EXPLOSIONPROOF STRUCTURE............35
13. PRODUCT CODE EXPLANATION .............36

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A lithium battery is mounted on EL0137.
To use the product safely, please observe the following warnings and cautions.
CAUTION:
WARNING:
This manual uses the precaution words
"NOTE", "CAUTION", and "WARNING" as explained below:
NOTE:
Notes are separated from the general text to bring the user's
attention to important information.
CAUTION:
Caution statements inform the user of hazards or unsafe practices
which could result in minor personal injury or product/property
damage.
WARNING:
Warning statements inform the user of hazards or unsafe practices
which could result in severe personal injury or death.
Do not use the battery for any purpose other than designated use application.
Do not charge the battery.
Do not throw the battery in the re or heat it up or disassemble it.
Do not reverse positive and negative sides of battery when you use it.
Do not short-circuit the battery.
Keep the battery out of infant's reach.
If liquid leaks from battery or abnormal odor is generated, the leaked electrolysis solution may catch fire.
Keep the battery away from the re immediately.
Do not solder the battery directly.
Do not apply strong impact to the battery or throw it.
Do not deform the battery.
Do not discharge the battery forcibly.
Do not peel off the lm on the surface of battery or damage it.
If the solution of battery gets into your eye, wash the eye with clean water such as tap water sufciently and
receive medical treatment from a doctor immediately.
Do not use or leave the battery at a place where is exposed to direct sunlight or hot place such as inside of
vehicle under the boiling sun.
Do not wet the battery with water or other liquid.
Specifications and performance of battery may not be suitable depending on usage or instrument. Read
instruction manual and precautions of instrument carefully before using it.
Store the battery avoiding direct sunlight, high temperature, and high humidity.
When you discard or store the battery, insulate it completely with tape etc.
When you discard the battery, follow the rule shown in the ordinance etc. of autonomous body.
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Explosionproof
cautionlabel
Product
label
E-126-3-E

1. PRECAUTIONS ON HANDLING
At the time of delivery, the power of this instrument is turned OFF. Before the initial operation, open
the front lid and turn the power ON. For information on power-on procedure, refer to Section 8.
This instrument is shipped after sufficient inspection at factory. After you receive the instrument, check the
external appearance and check the instrument is not damaged by an accident during the transportation.
This section describes the precautions required for handling. Please read this section first.
If you have any inquiries, please contact the distributor
or your nearest service network of our company.
1.1 Confirmation of name plate
Each unit of this flowmeter is adjusted according to the specifications. Product model and rated specifications are
described on the product name plate affixed to the side surface of main unit. Please check it reads the ordered
specifications.
Fig. 1.3 Product name plate
◆Note ◆
When you contact our company, please inform us of product name, product
model, and production number etc.
Fig. 1.2 Explosionproof caution name plate
Fig. 1.1 Confirmation of labels
製造者名称：株式会社オーバル 横浜事業所
型式の名称：EL0137-1
防爆の型式：ExdⅡCT6X
定格
電源 ：DC3.6V
周囲温度：−20℃〜＋55℃
出力回路
オープンコレクタパルス出力
電圧パルス
電流パルス
接点
−警告事項−
爆発性雰囲気の存在する恐れがある時は蓋を開けないこと。
−注意事項−
本機器をご使用する前は、取扱説明書を参照下さい。
労（平. ）検
第 TC21476 号
株式会社
オーバル

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
－Place where is not exposed to rain or water
－Place where vibration or shock is rarely generated
－Room-temperature and room-humidity place
－Storage / shipment environment condition
Temperature: 20 ±15℃
Relative humidity: 65 ±20%
Atmosphere pressure: 500 to 1060hPa
This instrument has IP67 class performance,
however, when it is used at a place exposed to direct
sunlight or change of weather constantly, enclose it
with shielding object such as roof to protect the
instrument during use.
Do not install the product at a place where thumping
vibration is generated, and install it on stable
structure without effects of vibration.
Fig. 1.4 Precautions on installation location
1.2 Precautions on transportation
(1) To prevent the instrument from being damaged by an accident during transportation, convey this instrument
to the installation location in the original packing style shipped from our company whenever possible.
(2) Take care not to apply strong shock to the instrument or get it wet with rain during the conveyance.
1.3 Precautions on storage
After receiving this instrument, an unexpected accident may occur if the elapsed time before installation is long.
If the long-term storage is expected, pay attention to the following items.
(1) Store this instrument in the original packing style shipped from our company whenever possible.
(2) The storage place should meet the conditions shown below.
1.4 Precautions on use conditions
To keep accuracy of totalizer and long-term durability, it is necessary to use the product under the designated
conditions of ambient temperature and rated power (signal) etc. These use conditions are shown in the section
"3. Specifications / performance". Please be sure to check it before the operation.
If you want to change the use conditions, please contact us.
1.5 Precautions on installation location
The ambient operating temperature of totalizer is -20°C to +55°C (in case of non-explosionproof type, -40°C to
+70°C). If the totalizer may be exposed to high temperature due to direct sunlight and reflected heat etc., set up
sunshade etc. and use the product within the use temperature range. Do not put an object within 10cm from front
surface of product (glossy object causes wrong reaction of optical switches and may affect the life duration of
battery).

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1.6 Precautions on turning ON the power supply
When operated in a hazardous area, make sure there is no explosive gas in the place so as to ensure the safety.
1.7 Note on returning the product
When you request the repair by returning the product for any reasons, follow the items shown below.
(1) Make a document of information of returned instrument such as "model code, serial number, reason of return
and all relevant information of the address to return the product" and include it with the product.
(2) Package the instrument carefully. Use the original packing box if possible.
2. OUTLINE
By relaying pulse signal from oval gear flowmeter, DELTA or EX-TUBINE Flowmeter, this totalizer displays
cumulative total flow, instantaneous flow rate, etc. The display is easily viewable with the backlit, enabling highly
reliable flow measurement in the field.
Also, switching of the display and parameters is possible with optical switches on the front face easily and
flexibly.

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Item Description
Installation method Attached to 2B (50A) pipe, equipped with a dedicated clamp
Directive and
standard
EMC EN 61326-1
RoHS EN 50581
Explosionproof
construction Exd ⅡC T6X
Waterproof
construction IP66/67 (※1)
Ambient temperature Explosionproof product: -20 to +55°C, non-explosionproof product: -40 to +70°C
Ambient humidity 5 to 100% RH no dew condensation in enclosure
Material of main unit Die-cast aluminum
Coating of case Polyurethane coating
Coating color Main unit: Munsell 10B8/4 , lid (front and rear): Munsell 2.5PB4/10
Response frequency 200Hz max. (input dividing: up to 3kHz supported by setting 1/10, 1/100)
Display
Height of character: upper row 10.5mm, lower row 7mm, display changes alternately by
optical switches
(1) 8-digit resettable total display (integral part max. 7 digits + decimal number)
(2) 8-digit accumulated total display
(3) Instantaneous flow rate display (selected from /day, /h, /min, /sec)
(4) Instantaneous flow rate bar chart display
Warning display of remaining battery ( ), switch operation display ( ), alarm display, key
lock display ( ), equipped with backlight
Input
Compensated
pulse or
uncompensated
pulse
Contact or open collector pulse
Input resistance: 10Ω, reception level: Hi≥0.5mA, Lo≤0.01mA
Voltage pulse
Input resistance: 5.1kΩ, reception level: Hi≥3.0V, Lo≤1.5V
Current pulse (4-20mA)
Input resistance: 91Ω, reception level: Hi≥15mA, Lo≤7mA
Special specification rating: V+≤35.2V*
* Product code J (open collector pulse dedicated to Thermister Type DELTA)
Electric conduit
M25 pressure tight packing (applicable cable diameter: φ8.1 to 13.0mm) : Draw out the wire
from the downside of front (central part)
Diameter of close-up plug socket: 12.0mm (※2) (The plugs on both sides are explosionproof
parts. Do not use them being disconnected as a general rule.)
Maximum
transmission distance 1km (relayed by line between receiver-transmitter)
Power supply
Exclusive battery (※3)
Life duration: approx. 4 years (8 h/day operated, 30 min/day backlight lighting)
The battery's life length depends on setting, configuration, and use environment etc.
Data protection
All settings are saved in EEPROM. Accumulated total is backed up every minute. Data is
saved for 10 years or more.
Parameter setting can be protected by password.
Weight Approx. 1.9kg (pressure tight packing 0.1kg is not included)
3. SPECIFICATIONS AND PERFORMANCE
3.1 Standard specifications
NOTE: ※1. The electric electric conduit of the shipped product is protected with IP43 equivalent close-up
plug.
If the product is stored for a long time, observe the "precautions on storage" shown in section 1.3.
※2. 12mm is not included with the general wrench set.
※3. Please contact us about replacing the battery.

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Fig. 4.1 Names of external parts
Fig. 4.2 Names of internal parts
Close-upplug（※1）
Frontlid
Explosionproofcautionlabel
Approvallabel
Externalwiringlead-inclasp（※2）
Groundingterminal
Totalizermainunit
4. NAME OF EACH PART AND EXTERNAL DIMENSIONS
The names of parts configuring this totalizer are shown below.
NOTE: ※1. This close-up plug is an explosionproof part. Do not use it being disconnected.
These two parts cannot be used for leading-in the external wiring.
※2. The wiring is drawn from this point.
(3)Baseprotectiveshield
(8)Batteryholderunit
(2)Displayunit
(1)Frontlid
(4)M3screwx3
(7)M3supportrod
(10)Mainunit
(9)Batteryboard
(6)M3supportrod
(5)PulseconversionboardM3

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Please contact OVAL to purchase the replacement of
dedicated battery.
Damages caused by using a battery which is NOT
purchased from OVAL will not be covered by the
warranty.
Fig. 4.3 Display unit
WARNING:
Do not fail to ensure there is no
explosive gas around the area
before start disassembling.
(11)Connectorofdisplayunit
(11)Connectorofpowersupply

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Fig. 4.5 External dimensions diagram (only main unit)
Fig. 4.6 External dimensions diagram (cable gland designated by OVAL is connected)
115
112
148
3
45
133 118
72
1
3
2
67
4
5
Name
LCDdisplaypart
Opticalswitches
GroundingterminalM4screw
M25pressuretightpacking
Metalclamp
Modelcodeplate
Explosionproofcautionlabel
(oppositesurface)
No.
1
2
3
4
5
6
7
115
112
148
3
45
133 118
72
1
3
2
67
4
5
Name
LCDdisplaypart
Opticalswitches
GroundingterminalM4screw
M25pressuretightpacking
Metalclamp
Modelcodeplate
Explosionproofcautionlabel
(oppositesurface)
No.
1
2
3
4
5
6
7
The external dimensions are shown below. The dimension values vary depending on the "external wiring gland"
to be connected and the combination of "close-up plug".