Ametek 675 User guide

MODEL 675
Shark Cage
Intrinsically Safe
Submersible Level Transmitter
INSTRUCTIONS FOR INSTALLATION AND OPERATION
C US
K796478 Rev. C
1/2023

Model 675 Series Submersible Level Transmitter
2
Contents
Section 1: Introduction ..................................................................................................................... 1
1.1 System Description ......................................................................................................... 1
1.2 Model Number ................................................................................................................. 2
Section 2: Installation ....................................................................................................................... 3
2.1 Safety Information ........................................................................................................... 3
2.2 Unpacking & Inspection .................................................................................................. 3
2.3 Operational Checkout...................................................................................................... 3
2.4 Mounting ......................................................................................................................... 4
2.5 Wiring ............................................................................................................................... 6
2.6 Cable Termination............................................................................................................ 8
Section 3:Accessories................................................................................................................... 10
3.1 Parts & Accessories....................................................................................................... 10
3.2 Ordering Parts & Accessories ....................................................................................... 10
Section 4: Troubleshooting ............................................................................................................ 11
4.1 Problem/Cause/Checks ................................................................................................ 11
4.2 Factory Assistance ........................................................................................................ 11
4.3 Equipment Return.......................................................................................................... 12
Section 5: Specications................................................................................................................ 14
5.1 Model 675 Series Transmitter ....................................................................................... 14
Section 6: Drawings........................................................................................................................ 15
6.1 Intrinsic Safety ............................................................................................................... 15
6.2 Outline Drawings ........................................................................................................... 16
AMETEK STC makes no warranty of any kind with regard to the material contained in this manual,
including, but not limited to, implied warranties or tness for a particular purpose. STC shall not be
liable for errors contained herein or for incidental or consequential damages in connection with the
performance or use of material.
© Copyright AMETEK PMT Products

Introduction
1
Section 1: Introduction
1.1 System Description
The Model 675 is specifically designed for slurry and highly viscous
applications where clogging of the sensor area is common. The Model
675 uses a 3.5” flush diaphragm to prevent unwanted clogging of the
sensing area. This submersible level device is made of 316 SS which offers
outstanding environmental protection and is available in depths up to
138 feet of water.
The non-fouling flush diaphragm is designed to eliminate unwanted
buildup of debris, fats, oils, greases, and other bio-solids by removing
any potential gaps on the measurement area. The high integrity seal’s
heavy construction eliminates the effects of turbulence on the sensor.
The 675 Series Transmitters indicate the level of liquid by continuously
measuring hydrostatic pressure via its sensing element, an ion implanted
siliconsemiconductor chipwithintegralWheatstoneBridgecircuit.Once
the sensor measures the pressure, the data is transmitted by a 4 to 20
mA output signal. This design provides for excellent reliability in remote
and inaccessible locations.
The Model 675 is approved for intrinsically safe operation in hazardous
locations as designated by Class I, Div 1, Groups A, B, C & D and Class
II, Groups E, F & G. when connected per Ametek drawing BK750535.
All Model 675 transmitters are equipped with a sealed cable termination
areaand moistureabsorbingdesiccantcanister. Thepurpose isto restrict
moisture from entering the transmitter through the cable vent.
Features
• Oversized 4.75” flush diaphragm to prevent clogging
• 0.25% Full Scale Accuracy
• Intrinsically Safe for Class 1 Division 1 Applications
• Custom Pressure Ranges and Cable Lengths
• Extremely rugged 316L SS construction
• Two-wire, 4-20 mA standard output
• Reverse polarity and surge protection
Applications
• Lift Stations
• Sewage Levels
• Slurries
• Storm Runoffs
• Pump Control

Model 675 Series Submersible Level Transmitter
2
1.2 Model Number
675 Level Transmitter
675 MODEL 675 submersible level transmitter
Sensing Port
P Shark cage 3.5” diameter diaphragm
Input / Output (approved power supply required)
B 12 to 28 VDC / 4 to 20mA (standard)
Pressure Ranges*
PSI BAR EQUIVALENTS
00006 0.4B 0-13.8 ft water 0-4.2 meters water
00015 001B 0-34.6 ft water 0-10.5 meters water
00030 002B 0-69.2 ft water 0-21.1 meters water
00060 004B 0-138 ft water 0-42.2 meters water
Electrical Connection**
M 22 AWG polyurethane vented cable with support bracket (K515072 cable)
P 22 AWG polyurethane vented cable with conduit adaptor (K515072 cable)
W 22 AWG polyurethane vented cable with cable support bracket and EMI
protection
Diaphragm Material
L 316L stainless steel (standard)
Fill uid
S Silicone oil (standard)
M Mineral oil
Cable Length
675 P B 0006 M L S 100 feet
Model Numbering
*Decimal points for non-standard ranges may be used
Decimal point requires one model code position, i.e. 1.08 = 4 positions

Installation
3
Section 2: Installation
2.1 Safety Information
Theoverallsystem isdesignedtopreventaccidentalshocktotheoperatorwhen
properly used. No design, however, can insure the safety of an instrument
improperly installed or used negligently. Read this manual carefully and
completely before operating the instrument. Failure to read this manual in
itsentiretycouldresultindamageto theinstrumentorinjurytothe operator.
To avoid possible shock hazard install in a grounded enclosure, prevent live
parts being touched and ground the sensor sheath and housing. Follow
wiring diagrams and local regulations. Installations where failure of this
equipment may cause personal injury, property loss, equipment damage or
financial loss, backup failsafe protection must be used.
2.2 Unpacking & Inspection
Carefully remove the contents of the shipping carton and check each item
against the packing list before destroying any packing material. If there is
any shortage or damage, report it to the factory immediately.
When this transmitter is used with the AMETEK PMT Products DDMC
Controller, the transmitter Model Number is identified on the nameplate of
the DDMC in the section labeled “USED WITH.” This is because the DDMC
is calibrated with, and should be used only with a specific Submersible
Transmitter. Look for a correlation between the two instruments.
2.3 Operational Checkout
Beforeinstallingthe675SeriesTransmitter,makesurethesystemisoperating
by doing a bench check.
WARNING:
Do not connect any wires while Power is applied.
For temporary connections, refer to diagrams in Wiring Section 2.5 of this
manual. Connect AC power to the controller and/or with which it is to be
used. Apply power and allow a five-minute warm-up.
With no pressure applied to the transmitter, the meter should display zero
(or for “drawdown” the reading corresponding to the depth below ground
level that the transmitter will be when installed.)

Model 675 Series Submersible Level Transmitter
4
2.4.2 Placement
The Model 675 Transmitter should be supported by customer-installed
strain relief cable that is attached to the tabs on the transmitter or optional
factory stainless steel support cable #K515183. Reference Figure 2-2 for
installation recommendations. Ametek does not recommend suspending the
transmitter supported only by its attached electrical cable.
Caution: Do not allow transmitter to remain in liquid when it freezes solid.
Thiswillapplymechanicalforcetothesending diaphragmofthetransmitter.
Excessive force will result in transmitter damage or destruction.
2.3 Operational Checkout (continued)
CAUTION: Do not simulate an increase in pressure by applying mechanical
force to the sensing diaphragm of the transmitter. Excessive force will result
in damage to or destruction of the transmitter.
When pressure is applied to the transmitter, the display should increase,
and then return to the original reading when pressure is removed. The
Transmitter can be pressurized by lowering it into water or by applying air
pressure from a calibration device.
2.4 Mounting
2.4.1 Dimensions
REV
H : \ EC N s\
REV
3:4
8 2 0 PEN N SY LV A NI A BO U L EV A RD , F EA STERV I LL E, P A 1 9 0 5 3
LIMITS OF ACCEPTABLE WORKMANSHIP ARE DEFINED IN MS-645-A.
A
B
C
D
A
B
C
D
1234
4321
2 O F 2
K780728
CONTAINS IS TO BE COPIED, REPRODUCED, DISCLOSED TO OTHERS, OR USED WITHOUT WRITTEN PERMISSION FROM AMETEK INC. REFER TO SHEET 1 FOR REVISION HISTORY.
C65048
WEIGHT SHEET
C
SCALE
SIZE CAGE CODE DWG NO.
8 2 0 PEN N SY LV A NI A BO U L EV A RD , F EA STERV I LL E, P A 1 9 0 5 3
U.S.G A UGE D IVISIO N
PM T P RO D UC TS
ALL SHEETS OF THIS DOCUMENT ARE THE SAME REVISION LEVEL.
THIS DRAWING IS THE PROPERTY OF AMETEK INC. ALL RIGHTS ARE RESERVED AND NEITHER THIS DRAWING NOR ANY INFORMATION IT
LIMITS OF ACCEPTABLE WORKMANSHIP ARE DEFINED IN MS-645-A.
A
B
C
D
A
B
C
D
1234
4321
CONTAINS IS TO BE COPIED, REPRODUCED, DISCLOSED TO OTHERS, OR USED WITHOUT WRITTEN PERMISSION FROM AMETEK INC. REFER TO SHEET 1 FOR REVISION HISTORY.
C65048
WEIGHT SHEET
C
SCALE
SIZE CAGE CODE DWG NO.
THIS DRAWING IS THE PROPERTY OF AMETEK INC. ALL RIGHTS ARE RESERVED AND NEITHER THIS DRAWING NOR ANY INFORMATION IT ALL SHEETS OF THIS DOCUMENT ARE THE SAME REVISION LEVEL.
H
N O N REN EW A BLE D ESIC C A N T
INSTALL IN A DRY ENVIRONMENT
1.0 HEX
20 AWG LEADS
PO TTED C A BLE EN D
(DO NOTREMOVE)
1.25
SPEC IFIED IN
.312
.25 THRU
X2
.74
1.00
10.29
C A BLE
THEMODELCODE
1.00
8.00
1.25
BO TTO M V IEW W ITH
PRO TEC TI V E PLA TE REM O V ED
4.75
3.495
DIAPHRAGM
SURFA C E
OPTIONAL
CONDUITADAPTOR
1 " H EX 1.57
1.05
REV
H : \ EC N s\
REV
3:4
8 2 0 PEN N SY LV A NI A BO U L EV A RD , F EA STERV I LL E, P A 1 9 0 5 3
LIMITS OF ACCEPTABLE WORKMANSHIP ARE DEFINED IN MS-645-A.
A
B
C
D
A
B
C
D
1234
4321
2 O F 2
K780728
CONTAINS IS TO BE COPIED, REPRODUCED, DISCLOSED TO OTHERS, OR USED WITHOUT WRITTEN PERMISSION FROM AMETEK INC. REFER TO SHEET 1 FOR REVISION HISTORY.
C65048
WEIGHT SHEET
C
SCALE
SIZE CAGE CODE DWG NO.
8 2 0 PEN N SY LV A NI A BO U L EV A RD , F EA STERV I LL E, P A 1 9 0 5 3
U.S.G A UGE D IVISIO N
PM T P RO D UC TS
ALL SHEETS OF THIS DOCUMENT ARE THE SAME REVISION LEVEL.
THIS DRAWING IS THE PROPERTY OF AMETEK INC. ALL RIGHTS ARE RESERVED AND NEITHER THIS DRAWING NOR ANY INFORMATION IT
LIMITS OF ACCEPTABLE WORKMANSHIP ARE DEFINED IN MS-645-A.
A
B
C
D
A
B
C
D
1234
4321
CONTAINS IS TO BE COPIED, REPRODUCED, DISCLOSED TO OTHERS, OR USED WITHOUT WRITTEN PERMISSION FROM AMETEK INC. REFER TO SHEET 1 FOR REVISION HISTORY.
C65048
WEIGHT SHEET
C
SCALE
SIZE CAGE CODE DWG NO.
THIS DRAWING IS THE PROPERTY OF AMETEK INC. ALL RIGHTS ARE RESERVED AND NEITHER THIS DRAWING NOR ANY INFORMATION IT ALL SHEETS OF THIS DOCUMENT ARE THE SAME REVISION LEVEL.
H
N O N REN EW A BLE D ESIC C A N T
INSTALL IN A DRY ENVIRONMENT
1.0 HEX
20 AWG LEADS
PO TTED C A BLE EN D
(DO NOTREMOVE)
1.25
SPEC IFIED IN
.312
.25 THRUX2
.74
1.00
10.29
C A BLE
THEMODELCODE
1.00
8.00
1.25
BO TTO M V IEW W ITH
PRO TEC TI V E PLA TE REM O V ED
4.75
3.495
DIAPHRAGM
SURFA C E
OPTIONAL
CONDUITADAPTOR
1 " H EX 1.57
1.05
REV
H : \ EC N s\
REV
3:4
8 2 0 PEN N SY LV A NI A BO U L EV A RD , F EA STERV I LL E, P A 1 9 0 5 3
LIMITS OF ACCEPTABLE WORKMANSHIP ARE DEFINED IN MS-645-A.
A
B
C
D
A
B
C
D
1234
4321
2 O F 2
K780728
CONTAINS IS TO BE COPIED, REPRODUCED, DISCLOSED TO OTHERS, OR USED WITHOUT WRITTEN PERMISSION FROM AMETEK INC. REFER TO SHEET 1 FOR REVISION HISTORY.
C65048
WEIGHT SHEET
C
SCALE
SIZE CAGE CODE DWG NO.
8 2 0 PEN N SY LV A NI A BO U L EV A RD , F EA STERV I LL E, P A 1 9 0 5 3
U.S.G A UGE D IVISIO N
PM T P RO D UC TS
ALL SHEETS OF THIS DOCUMENT ARE THE SAME REVISION LEVEL.
THIS DRAWING IS THE PROPERTY OF AMETEK INC. ALL RIGHTS ARE RESERVED AND NEITHER THIS DRAWING NOR ANY INFORMATION IT
LIMITS OF ACCEPTABLE WORKMANSHIP ARE DEFINED IN MS-645-A.
A
B
C
D
A
B
C
D
1234
4321
CONTAINS IS TO BE COPIED, REPRODUCED, DISCLOSED TO OTHERS, OR USED WITHOUT WRITTEN PERMISSION FROM AMETEK INC. REFER TO SHEET 1 FOR REVISION HISTORY.
C65048
WEIGHT SHEET
C
SCALE
SIZE CAGE CODE DWG NO.
THIS DRAWING IS THE PROPERTY OF AMETEK INC. ALL RIGHTS ARE RESERVED AND NEITHER THIS DRAWING NOR ANY INFORMATION IT ALL SHEETS OF THIS DOCUMENT ARE THE SAME REVISION LEVEL.
H
N O N REN EW A BLE D ESIC C A N T
INSTALL IN A DRY ENVIRONMENT
1.0 HEX
20 AWG LEADS
PO TTED C A BLE EN D
(DO NOTREMOVE)
1.25
SPEC IFIED IN
.312
.25 THRU
X2
.74
1.00
10.29
C A BLE
THEMODELCODE
1.00
8.00
1.25
B O TTO M V I EW W I TH
PRO TEC TI V E PLA TE REM O V ED
4.75
3.495
DIAPHRAGM
SURFA C E
OPTIONAL
CONDUITADAPTOR
1 " H EX 1.57
1.05
REV
H : \ EC N s\
REV
3:4
8 2 0 PEN N SY LV A NI A BO U L EV A RD , F EA STERV I LL E, P A 1 9 0 5 3
LIMITS OF ACCEPTABLE WORKMANSHIP ARE DEFINED IN MS-645-A.
A
B
C
D
A
B
C
D
1234
4321
2 O F 2
K780728
CONTAINS IS TO BE COPIED, REPRODUCED, DISCLOSED TO OTHERS, OR USED WITHOUT WRITTEN PERMISSION FROM AMETEK INC. REFER TO SHEET 1 FOR REVISION HISTORY.
C65048
WEIGHT SHEET
C
SCALE
SIZE CAGE CODE DWG NO.
8 2 0 PEN N SY LV A NI A BO U L EV A RD , F EA STERV I LL E, P A 1 9 0 5 3
U.S.G A UGE D IVISIO N
PM T P RO D UC TS
ALL SHEETS OF THIS DOCUMENT ARE THE SAME REVISION LEVEL.
THIS DRAWING IS THE PROPERTY OF AMETEK INC. ALL RIGHTS ARE RESERVED AND NEITHER THIS DRAWING NOR ANY INFORMATION IT
LIMITS OF ACCEPTABLE WORKMANSHIP ARE DEFINED IN MS-645-A.
A
B
C
D
A
B
C
D
1234
4321
CONTAINS IS TO BE COPIED, REPRODUCED, DISCLOSED TO OTHERS, OR USED WITHOUT WRITTEN PERMISSION FROM AMETEK INC. REFER TO SHEET 1 FOR REVISION HISTORY.
C65048
WEIGHT SHEET
C
SCALE
SIZE CAGE CODE DWG NO.
THIS DRAWING IS THE PROPERTY OF AMETEK INC. ALL RIGHTS ARE RESERVED AND NEITHER THIS DRAWING NOR ANY INFORMATION IT ALL SHEETS OF THIS DOCUMENT ARE THE SAME REVISION LEVEL.
H
N O N REN EW A BLE D ESIC C A N T
INSTALL IN A DRY ENVIRONMENT
1.0 HEX
20 AWG LEADS
PO TTED C A BLE EN D
(DO NOTREMOVE)
1.25
SPEC IFIED IN
.312
.25 THRU
X2
.74
1.00
10.29
C A BLE
THEMODELCODE
1.00
8.00
1.25
B O TTO M V I EW W I TH
PRO TEC TI V E PLA TE REM O V ED
4.75
3.495
DIAPHRAGM
SURFA C E
OPTIONAL
CONDUITADAPTOR
1 " H EX 1.57
1.05

Installation
5
2.4.3 Model 675 Series Transmitter
CAUTION: The cable grommet is specially installed by factory-trained
personnel to assurethatitremains watertight.Anyadjustmentorremovalof
thegrommetmaydestroythewatertightfeaturethusexposingthetransmitter
to water seepage, causing an electrical short and transmitter failure. Any
adjustment or removal of the cable grommet voids the warranty.
CAUTION: The diaphragm seal assembly is installed by factory trained
personnel and should not be modified in the field. Any adjustment or removal
of the diaphragm seal assembly voids the warranty.
CAUTION: The waterproof cable should not be kinked or nicked, which will
allow water to seep into the cable and short out the transmitter.
Figure 2-2
Transmitter Installation Considerations
2.4.4 Provide Signal Noise Isolation
Thetransmitter shouldnotbemountedcloseto highcurrentswitchingrelays
or in an enclosure containing such relays. Low voltage wiring (transmitter
signal wires and analog output wires) should be separated from high voltage
wiring (115, 230 & 440 Vac) and should be shielded.
FACTORY OR

Model 675 Series Submersible Level Transmitter
6
2.5 Wiring
WARNING:
Do not connect any wires while AC Power input is applied.
2.5.1 Surge Protection
Surge protectors are available as an option item (see Parts & Accessories
in Section 3 of this manual). It is strongly recommended to protect from
secondarysurges andlightningonoutdoor installations.Installinaccordance
with the applicable drawing that is supplied with the surge protector and
the following instructions:
1. Lightning protection devices should be placed as close to the meter or
transmitter as possible and wired in accordance with Local Electrical
Codes in an approved watertight enclosure.
2. If the distance between the meter and transmitter, or meter and recorder
is less than 100 ft., only one protector per line is needed.
3. Use No. 8 AWG ground wire or better from protector.
4. Keep ground wire less than one foot long and tie to a suitable ground rod
or metal frame ground. Surge capability is only as good as the grounding
method. All ground connections must be installed.
5. Install protectors in weather-tight enclosures.
6. Run signal lines shielded and away from power lines.
7. Mount the fused switch panel as close to the meter as possible. Wire
according to the Local Electrical Code.
8. Lead lines for 110 Vac and 220 Vdc protectors should be cut as short as
practical.
Figure 2-3
Transmitter Wiring Identication

Installation
7
2.5.1 Surge Protection (Continued)
CAUTION: Thisor anyinstallationcannotprotectagainstadirectlightning
strike,orsecondary strikesofsufficientmagnitude.AMETEKPMTProducts
cannot accept liability for damage due to lightning or secondary surges.
2.5.2 Lightning Protection Wiring
Here is a typical wiring arrangement to a typical controller/ meter. Shown
here are connectors to the AMETEK PMT Products DDMC Controller in
the Levelmate III NEMA 4X enclosure option.
5A/250VAC
Slo blo fuse
BLA C K
W H I TE
W H I TE
G REEN
G REEN
BLA C K
C U S TO M E R
PO W ER
C U S TO M E R
PO W ER
C U S TO M E R
CONNECTIONS
C U S TO M E R
CONNECTIONS
BLA C K
G REEN
RED
D RA I N
BLA C K
BLA C K
W H I TE
G REEN
BLA C K
G REEN
W H I TE
BLA C K
RED
Fi g u r e 2 - 4
Wiring w ith Lig ht ning
Protection Options
Fi g u r e 2 - 5
Wiring w ith No Lig ht ning
Protection Options
.005.01
H:\ MA NUALS\ K796478\
1:1
8 2 0 P EN N SYLV A N IA BO UL EV A RD , FEA STERV I LLE, PA 1 9 0 5 3
DATE
LIMITS OF ACCEPTABLE WORKMANSHIP ARE DEFINED IN MS-645-A.
A
B
C
D
A
B
C
D
12345678
87654321
REVISION HISTORY
APPROVED
DATE
DESCRIPTION
LTR
ZONE
LM I I I A SSY . SLD A SM
U.S.G A UG E D IVISION
1 O F 1
CONTAINS IS TO BE COPIED, REPRODUCED, DISCLOSED TO OTHERS, OR USED WITHOUT WRITTEN PERMISSION FROM AMETEK INC.
THIS DRAWING IS THE PROPERTY OF AMETEK INC. ALL RIGHTS ARE RESERVED AND NEITHER THIS DRAWING NOR ANY INFORMATION IT
TOLERANCES ON
FINISH
2 DEC. PL.
MATERIAL
3 DEC. PL.
DIMENSIONS ARE IN INCHES.
ANGLES
1°
SIZE
D
CAGE CODE
65048
DWG NO.
WEIGHT SHEET
TITLE
D
SCALE
DRAWN
CHECKED
APPROVED
SUPERCEDES
USED ON
NEXT ASS`Y
E-FILE
UNLESS OTHERWISE SPECIFIED
PM T P RO D U C TS
PRO TEC TO R
BLA C K ( LIN E 2 )RED ( EQ UI P 1 )
BLA C K ( EQ U I P 2 ) RED ( LI N E 1 )
TR A N SM I TTE R
LIG HTNING
RED
RED ( LI N E 1 )
BLA C K ( LIN E 2 )
BLA C K ( EQ U I P 2 )
RED ( EQ UI P 1 )
ANALOG
O UTPUT
LIG HTNING
PRO TEC TO R
G REEN
RED
BLA C K
D RA I N
5A/250VAC
Slo blo fuse
C U STO M ER G RO UN D
W IRE FO R
LI G H TN IN G P RO TEC TO RS
# 8 A WG
C USTO M ER G RO UN D
W IRE FO R
L I G H TN I N G P RO TE C TO R S
# 8 A WG

Model 675 Series Submersible Level Transmitter
8
2.5.3 Lightning Protection Installation Concept
1. Lightning protection devices should be placed as close to the instrument
as possible.
2. If the distance between the meter and transmitter, or the meter and recorder
is less than 100 ft., only 1 protector per line may be used.
3. This or any installation cannot protect against a direct lightning strike, or
secondary strikes of sufficient magnitude. AMETEK PMT Products cannot
accept responsibility for damage due to lightning or secondary surges.
4. Proper installation including grounding require detailed installation
drawing. Consult factory.
2.6 Cable Termination
Instructions to installing the Ametek Submersible Transmitter using the
supplied desiccant canister:
Remove Power Source During Installation.
This Ametek submersible transmitter is equipped with a sealed termination
area and moisture absorbing desiccant canister. The purpose is to restrict
moisture from entering the transmitter from the cable termination. It
is important that the cable termination not be altered. Both potting and
Figure 2-6
Lightning Protection Concept