Winters LM7 Series User manual

www.winters.com WINTERS INSTRUMENTS
MANUFACTURER OF INDUSTRIAL INSTRUMENTATION
LM7 SUBMERSIBLE TRANSMITTER
INSTALLATION AND OPERATING MANUAL

LM7 Installation, Operation Manual
Tel: 1-800-WINTERS / www.winters.com WINTERS INSTRUMENTS2
Description and Features:
• Designed for continuous level measurement in water or wastewater (thin film)
• Good linearity for long term stability
• Available ranges include up to 300 psi
• Wide range of mechanical and electrical connections
• ±0.25% accuracy
• NEMA 6P / IP68. Approved for outdoor use. Explosion proof option available
• Customizable
• 1 year warranty
Applications:
• Appropriate for all level and depth measurement applications including open tanks, ground water
monitoring, sewage and water treatment facilities
Note: Intrinsically safe approval only applies to 4-20 mA output signal
1Shielded cable with integrated air tube for atmospheric pressure reference
Specifications
Output Signal
Standard 2-wire: 4-20 mA / Vs = 12-36 Vdc
Optional Ex-protection 2-wire: 4-20 mA / Vs = 14-28 Vdc
Optional 3-wire: 0-20 mA / Vs = 14-36 Vdc
0-10 V / Vs = 14-36 Vdc
Accuracy <±0.25% FSO BFSL
Permissible Load
Current 2-wire: Rmax = [(Vs - Vs min) / 0.02] Ohm
Current 3-wire: Rmax = 500 Ohm
Voltage 3-wire: Rmin = 10 kOhm
Influence Effects Supply: 0.05% FSO / 10 V
Load: 0.05% FSO / kOhm
Response Time <10 msec
Thermal Error <±0.2% FSO / 10K
Permissible Temperatures Medium: 14°F to 158°F (-10°C to 70°C)
Storage: -13°F to 158°F (-25°C to 70°C)
Short Circuit Protection Permanent
Reserve Polarity Protection No damage. No function.
Electromagnetic Protection Emission and immunity according to EN 61326
Ex-protection Option
Zone 0: II 1 G Ex ia IIC T4
Zone 20: II 1 D Ex tD A20 IP65 T185°F (85°C)
Safety technical max values: Ui = 28 V, Ii = 93 mA, Pi = 660 mW, Ci<1nF, L<10μH
Permissible Media Temperature Zone 0: 14°F to 140°F (-10°C to 60°C) with patm 12 up to 16 psi
Zone 1: 14°F to 158°F (-10°C to 70°C)
Connecting Cables Cable capacitance: Signal line/shield and signal line/signal line: 160 pF/m
Cable inductance: Signal line/shield and signal line/signal line: 1 μH/m
Electrical Connection Cable with sheath material1: PVC grey, PUR black, FEP black
Pollution Degree 4, electrical equipment for outdoor use
Housing 316Ti SS
Seals FKM (Viton®, Kalrez®) / EPDM
Diaphragm Ceramic AI2O396%
Protection Cap POM
SIL 2 Option IEC 61508 / IEC 61511
Current Consumption Current: 25 mA max
Voltage: 7 mA max
Weight 250 g (without cable)
Enclosure Rating NEMA 6P / IP68
CE Conformity EMC directive: 2004/108/EC
Kalrez®and Viton®are registered trademarks of DuPont
Performance Elastomers

LM7 Installation, Operation Manual
WINTERS INSTRUMENTS Tel: 1-800-WINTERS / www.winters.com 3
General information
Information on the Operating Manual
This operating manual contains important information on proper usage of the device. Read this operating manual
carefully before installing and starting up the pressure measuring device. Adhere to the safety notes and operating
instructions which are given in the operating manual. Additionally applicable regulations regarding occupational
safety, accident prevention as well as national installation standards and engineering rules must be complied with!
This operating manual is part of the device, must be kept nearest its location, always accessible to all employees.
This operating manual is copyrighted. The contents of this operating manual reflect the version available at the time
of printing. It has been issued to our best knowledge. However, errors may have occurred. Winters Instruments is
not liable for any incorrect statements and their effects.
NOTE: Technical modifications reserved
Symbols used
Y DANGER! – dangerous situation, which may result in death or serious injuries
Y WARNING! – potentially dangerous situation, which may result in death or serious injuries
Y CAUTION! – potentially dangerous situation, which may result in minor injuries
! CAUTION! – potentially dangerous situation, which may result in physical damage
NOTE – tips and information to ensure a failure-free operation
Target group
Y WARNING! To avoid operator hazards and damages of the device, the following instructions have to be
worked out by qualified technical personnel.
Limitation of liability
By non-observance of the operating manual, inappropriate use, modification or damage, no liability is assumed and
warranty claims will be excluded.
Intended use
- The probes have been developed for continuous level measurement. It is the operator's responsibility to check
and verify the suitability of the device for the intended application. If any doubts remain, please contact our
sales department in order to ensure proper usage. Winters Instruments is not liable for any incorrect selections
and their effects!
- Permissible media are gases or liquids, specified in the data sheet. In addition it has to be ensured, that this
medium is compatible with the media wetted parts.
Range Over-
pressure
Burst
Pressure Code
0-8 psi 9 psi 58 psi LM7008
0-15 psi 29 psi 58 psi LM7015
0-20 psi 58 psi 73 psi LM7020
0-35 psi 58 psi 73 psi LM7035
0-60 psi 145 psi 174 psi LM7060
0-100 psi 145 psi 174 psi LM7100
0-160 psi 290 psi 363 psi LM7160
0-200 psi 580 psi 725 psi LM7200
0-300 psi 580 psi 725 psi LM7300
Order Codes
124,5
Ø7,4
Ø27
Note: Measurements are in mm

LM7 Installation, Operation Manual
Tel: 1-800-WINTERS / www.winters.com WINTERS INSTRUMENTS4
- The technical data listed in the current data sheet are engaging and must be complied with. If the data sheet is
not available, please order or download it from our homepage. (http://www.winters.com)
Y WARNING! Danger through improper usage!
Package contents
Please verify that all listed parts are undamaged included in the delivery and check for consistency specified in your
order:
- probe
- mounting instructions
- with option SIL2 version:
Functional Safety Manual, Functional Safety Data Sheet?, SIL Declaration of Conformity
Product identification
The device can be identified by its manufacturing label. It provides the most important data. By the ordering code
the product can be clearly identified.
!The manufacturing label must not be removed
from the device!
Mechanical installation
Mounting and safety instructions
Y WARNING! Install the device only when depressurized and currentless!
Y WARNING! This device may only be installed by qualified technical personnel who has read and understood
the operating manual!
!Handle this high-sensitive electronic precision measuring device with care, both in packed and unpacked
condition!
!There are no modifications/changes to be made on the device.
!Do not throw the package/device!
!To avoid damaging the diaphragm, remove packaging and protective cap directly before starting assembly. The
delivered protective cap has to be stored!
!Place the protective cap on the pressure port again immediately after disassembling.
!Handle the unprotected diaphragm very carefully - it is very sensitive and may be easily damaged.
!Do not use any force when installing the device to prevent damage of the device and the plant!
!When placing the device into operation or after maintenance work, the probe has to be submerged slowly into
the medium! A rough immersion into the medium can damage or destroy the diaphragm.
!If there is any danger of damage by lightning or overpressure when the device is installed outdoor, we suggest
putting a sufficiently dimensioned overpressure protection between the supply or switch cabinet and the device
Installation steps for flange version
- Carefully remove the pressure measuring device from the package and dispose of the package properly.
Product Code: LM7060
Range: 0...60 PSI
Input: 14...28 VDC
+ Vs: 1 - Vs: 2
Output: 4...20 mA/2-wire
SN 8888888 01.2009
:Case
figure 1

LM7 Installation, Operation Manual
moc.sretniw.www/SRETNIW-008-1:leTSTNEMURTSNISRETNIW 5
-Please ensure that the mounting thread is clean and free of damage.
-Check to ensure that the O-ring fits properly in the groove.
-Screw in the mounting thread of the transmitter in the transmitter flange.
-Next, tighten it by an open-end wrench. (approx. 25 Nm)
-Install the flange according to your demands. If a new transmitter flange is needed, it can be ordered from
Winters Instruments
Removing the protection cap (if existing)
For the protection of the diaphragm, some of the probes have a plugged-on protection cap. If the device shall be
used in high-viscosity media such as sludge, a removal of the cap before start-up is necessary. Thus, the sensor
becomes flush and the medium will attain quickly to the diaphragm.
•If it is necessary for your application to remove the protection cap, this has to be done with utmost care. To
prevent a damage of the diaphragm, please follow these instructions.
Removal by hand
-Hold the probe in a way that the protection cap points upwards.
-Hold the probe with one hand on the sensor section (1).
-Remove the protection cap (2) with the other hand.
Removal with a tool (recommended)
-Hold the probe in a way that the protection cap points upwards.
-Slide a small tool such as a screwdriver (8) straight through two opposite drill holes in the protective cap (2).
-Lever it off by moving up the handle of the screwdriver.
•Make sure that the sensor (7) under the protection cap will not be damaged!
3.5 Cable protection (optional)
On order, the probe has been delivered with cable protection; if the device has optionally been prepared for
mounting with stainless steel or PVC pipe, a suitable cable protection has to be mounted by the customer.
•The probe must be installed in such a way that rubbing or impact of the device, e. g. against a tank wall, is
prevented. It is also important to consider the operating conditions such as flow conditions.
Electrical Installation
YWARNING!Install the device only when currentless!
Establish the electrical connection of the device according to the technical data shown on the manufacturing label,
the following table and the wiring diagram.
Y DANGER! The transmitter must not be installed in potentially explosive atmosphere requiring category 1 status.
Y WARNING! Input supply to pressure transmitter must be SELV (or class 2). Source in accordance with CSA
61010-1-04.
figure 2
removal of protection cap

LM7 Installation, Operation Manual
Tel: 1-800-WINTERS / www.winters.com WINTERS INSTRUMENTS6
!A minimum static bending radius has to be complied with. For static installation use the 10-fold cable diameter,
for dynamic applications use the 20-fold diameter.
!Prevent the damage or removal of the PTFE filter which is fixed over the end of the air tube on devices with
cable outlet and integrated air tube.
• For the electrical connection a shielded and twisted multicore cable is recommended.
• If a transition is desired from a probe cable with gauge tube to a cable without gauge tube, we recommend our
terminal box KL 1 or KL 2.
• Usually, the required cable is included in the scope of delivery. If it is although necessary to connect an existing
or special cable, the total resistance will increase. For applications, where this additional resistance of the
connecting cable could cause problems, this cable has to be checked with the following calculation.
with RL: resistance of connecting cable in ohm
p: specific resistance in ohm mm²/m
l: cable length in m
A: cross section of conductor in mm²
with Vtot: total voltage drop
Rload: load resistance (to be taken out of the current data sheet)
the following condition must be fulfilled:
with VS: planned supply voltage
VS min: minimal supply voltage (to be taken out of the current data sheet)
Characteristic
Disassembly
- Hold the probe on the sensor section (2) with one hand and turn the nut (4) carefully to the left with the other
hand. Prevent torsion of the cable section (3) against the housing!
- While screwing and pulling off the sensor section (2) from the cable section (3), hold it straight to prevent
damages on the plugs.
Assembly
- Check the o-rings (5, 6) and exchange damaged o-rings if necessary.
A
l
R
L
⋅⋅
=2ρ
()
A0.02R...RRV
loadL2L1tot
⋅+++=
minStotS
VVV +>
Pin Configuration
Electrical Connection Cable Colours (DIN 47100)
Supply+
Supply-
Signal+ (only 3-wire)
White
Brown
Green
Shield Yellow/green
Wiring Diagram

LM7 Installation, Operation Manual
- Lubricate the radial o-rings (5) with Vaseline or o-ring grease.
- Remove any grease residue from the axial-o-ring (6).
- Plug the cable section (3) straight into the plug of the sensor section (2).
- Hold the probe onto the sensor section (2) with one hand. Screw on and tighten the nut (4) carefully with the
other hand. Prevent torsion of the cable section (3) against the housing!
Accuracy 0.1% FSO
Devices with an accuracy of 0.1 % FSO have micro-controlled electronics for processing and improving the signal.
As a matter of principle, the processing takes more time than for analogue sensors, which have only an amplifier.
Due to this longer response time, the output signal follows the measured value discontinuously. For relatively stable
measuring values, this characteristic is secondary. Please compare the specification for the response time in the
data sheet.
Initial start-up
Y WARNING! Before start-up, the user has to check for proper installation and for any visible defects.
Y WARNING! The device can be started and operated by authorized personnel only, who have read and
understood the operating manual!
Y WARNING! The device has to be used within the technical specifications, only (compare the data in the data
sheet)!
Placing out of service
Y WARNING! When dismantling the device, it must always be done in the depressurized and currentless
condition! Check also if the medium has to be drained off before dismantling!
Y WARNING! Depending on the medium, it may cause danger for the user. Comply therefore with adequate
precautions for purification.
Maintenance
In principle, this device is maintenance-free. If desired, the housing of the device can be cleaned when switched off
using a damp cloth and non-aggressive cleaning solutions.
Depending on the measuring medium, however, the diaphragm may be polluted or coated with deposit. If the
medium is known for such tendencies, the user has to set appropriate cleaning intervals. After placing the device
out of service correctly, the diaphragm can usually be cleaned carefully with a non-aggressive cleaning solution and
a soft brush or sponge. If the diaphragm is calcified, it is recommended to send the device to Winters Instruments
for decalcification. Please read therefore the chapter “Service / Repair” below.
WINTERS INSTRUMENTS Tel: 1-800-WINTERS / www.winters.com 7
figure 3
separability

Tel: 1-800-WINTERS / www.winters.com WINTERS INSTRUMENTS8
!An incorrect cleaning can cause irreparable damages on the diaphragm. Never use spiky objects or pressured
air for cleaning the diaphragm.
Service / Repair
Recalibration
During the lifetime of a probe, the value of offset and span may shift. As a consequence, a deviating signal value in
reference to the nominal pressure range starting point or end point may be transmitted. If one of these two
phenomena occurs after prolonged use, a recalibration is recommended to ensure furthermore high accuracy.
Return
Before every return of your device, whether for recalibration, decalcification, modifications or repair, it is necessary
to contact us to ensure a fast handling of your request. Please inform us by sending an email to:
[email protected]. Include the number of devices sent and request a RMA. Then clean the device and pack it
shatterproof before send it to Winters Instruments indicating the RMA.
Disposal
The device must be disposed according to the European Directives 2002/96/EG and 2003/108/EG (on waste
electrical and electronic equipment) Waste of electrical and electronic equipment may not be disposed by domestic
refuse!
Y WARNING! Depending on the measuring medium, deposit on the device may cause danger for the user and
the environment. Comply with adequate precautions for purification and dispose of it properly.
Warranty conditions
The warranty conditions are subject to the legal warranty period of 1 year from the date of delivery. In case of
improper use, modifications of or damages to the device, we do not accept warranty claims. Damaged diaphragms
will also not be accepted. Furthermore, defects due to normal wear are not subject to warranty services.
Declaration of conformity / CE
The delivered device fulfils all legal requirements. The applied directives, harmonised standards and documents are
listed in the EC declaration of conformity, which is available upon request. Additionally, the operational safety is
confirmed by the CE sign on the manufacturing label.
LM7 Installation, Operation Manual

WINTERS INSTRUMENTS Tel: 1-800-WINTERS / www.winters.com 9

06/22
WINTERS INSTRUMENTS
MANUFACTURER OF INDUSTRIAL INSTRUMENTATION
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Winters Instruments is a global manufacturer of premium quality pressure and temperature instrumentation,
with distribution partners in over 90 countries. Please contact us for your nearest Regional Manager.
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M3A 1B2
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Fax: [phone]
[email protected]
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T2E 6J9
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Houston, Texas
77041
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Room 203, Building 8,
No. 471, Guiping Road
Shanghai 200233 China
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Buenos Aires, Argentina
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6WB G50
Dubai, United Arab Emirates
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NN5 7QS
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