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SL/SX LEVEL TRANSMITTER
Anderson Instrument Co. Inc.
156 Auriesville Road
Fultonville, NY 12072
1-800-833-0081
Fax 518-922-8997
Instruction Manual
Instrument Model Number
Instrument Serial Number
Form Number AIC2008
� January 2000
Revised: 6/07
Supersedes: 5/03
SL/SX LEVEL TRANSMITTER
�
2. Strip back 1-1/4 of outer sheathing, cut off any excess wires,
shield and ground. Strip off 1/4 insulation from remaining two
wires. It is not necessary or recommended to tin the wires.
1. Insert cable through Pressing Screw, Compression Ring,
Seal Grommet, and Sleeve as shown below.
Shown With
Cap Removed
O-Ring
Thread sealing
tape applied.
3. Orient Connector end so that
center pin connecting screw is
horizontal facing right (see detail).
4. Wire LOOP+ (red) wire to top-right
terminal, and LOOP- (black) wire to
top-left terminal. No connection is made
to the center and bottom terminals.
5. Screw on the Sleeve. Hand-tighten only.
6. Press the Seal Grommet into the Sleeve and hand-
tighten the Pressing Screw.
7. Use a wrench to tighten the Pressing Screw another
3/4 turn. Do not over-tighten!
Connector End
�
Red
Black
SL/SX/LD/LA Liquid Level Transmitter
Quick Start Installation Guide
Rev. 5.0
Doc 1105
Page 1 of 2
Technical Bulletin
Anderson Instrument Co., Inc.
156 Auriesville Road
Fultonville, NY 12072
Phone: 518-922-5315 or 800-833-0081
Fax:
518-922-8997 or 800-726-6733
www.andinst.com
Section 3 - Sensor Rezero Procedure
MODE SWITCH
SET TO RUN MODE
SWITCH FUNCTIONS:
RUN: Normal Operating Mode, Rezero or Span with Pressure in RUN Mode
CURRENT CAL: Read CURRENT CAL Value with DMM Across Testpoints
FIELD CAL: Program New CURRENT CAL Value with DMM Across Testpoints
SPAN: Increase (+) Key while in FIELD CAL Mode, or Set Span with Pressure
in Run Mode
ZERO: Decrease (-) Key while in FIELD CAL Mode, or Set Zero with Vessel Empty
in Run Mode
Receiver and Meter
Connections omitted for
clarity. Meter may be used to
verify 4.00 mA output, but is
not required to perform
Sensor Rezero Procedure.
PROCEDURE MUST BE PERFORMED WHEN:
- Sensor is initially installed.
- Whenever sensor is reinstalled in vessel.
- About 1-2 months after initial installation.
- Annually, as part of a PM program.
Section 2 - Proper Transmitter Wiring & Testing
For units equipped with HART, HHT must be connected
to loop. For detailed instructions see manual section 3.7.
A Digital MultiMeter may be connected across Test+ and Test- to
verify operation by observing the following readings:
1. 4 mA while vessel is empty. Value increases as level increases.
2. 20 mA with MODE Switch in FIELD CAL position.
3. Between 7.2 and 20 mA with MODE Switch in CUR CAL position.
(The exact CUR CAL value indicates the calibration - see Sect. 4)
To install connector, simply line up key, press into
receptacle, and
the retaining ring
hand-tighten
.
*Receptacle pins should be coated with USDA approved dielectric grease to minimize possibility of corrosion.
Field Wireable Connector (assembled)
Loop+(red) wire
Loop- (black) wire
Shield (clear or bare) wire
P/N: 42119B0000 (without cable)
P/N: 56623A0002
P/N: 5662400000
Receptacle
*Dielectric Grease
Retaining Ring
Pin 1 - Red
(+PWR 9-30 VDC)
Pin 2 - Black
(-PWR)
DETAIL
Sleeve
Seal
Grommet
Compression
Ring
Pressing Screw
-2 included choose one to accommodate cable OD
�
(-)
COM
DMM
(+)
mA
Shown With
Cap Removed
LOOP + (RED)
LOOP - (BLACK)
12-40 VDC
POWER
SUPPLY
SIGNAL
RECEIVER
-
-
+
+
SHIELD GROUND
(ONE POINT ONLY)
Not to Scale
WARNING:
D
O
N
OT
A
LLOW
E
ITHER
M
ETER
L
EAD TO
C
ONTACT
S
ENSOR
H
OUSING OR
G
ROUND
W
HILE
C
ONNECTED TO
T
ESTPOINTS
!
Red
Black
�
�
Kit - Field Wireable Connector and Receptacle
with Dielectric Grease
P/N: 56642A0001 1. N
O
O
UTPUT
C
URRENT
(
ZERO M
A)
IN
A
NY
M
ODE
:
Loop may be broken - Measure voltage across LOOP+ and LOOP- terminals.
If not between 12-40 VDC, check connector and external loop wiring.
Check if mA fuse in DMM is blown. This frequently occurs during testing.
Rev. 5.0
Doc 1105
Page 2 of 2
Section 5 - Troubleshooting Guide
A
S TROUBLESHOOTING MAY CAUSE CHANGES IN SENSOR OUTPUT
,
SECURE ALL AUTOMATED CONTROLS PRIOR TO BEGINNING PROCEDURES
Most troubleshooting will require that you connect a Digital MultiMeter across the testpoints as indicated in Section 2. If you find
that you need to contact the factory for assistance, please first record your findings in the spaces provided below.
1.
Tank Name:
2. Sensor Model #:
3. Sensor Serial #:
4. Receiver/Display:
5. DC Voltage across LOOP+ & LOOP-:
_________
6. As found mA output when vessel empty: _________
7. mA output after Rezero performed:
_________
8. mA output in CUR CAL Mode:
_________
9. mA output in FIELD CAL Mode:
_________
2. C
URRENT
O
UTPUT
L
ESS THAN
4
M
A
AND DOES NOT
I
NCREASE WITH
L
EVEL
,
OR IF
MODE SWITCH
SET TO
FIELD CAL.
Connect milliammeter across LOOP+ terminal and TEST- testpoint.
If loop now works, sensor circuitry has been damaged. Contact factory.
3. O
UTPUT STUCK BETWEEN
4
AND
20
M
A
Verify that MODE switch is in RUN mode.
Empty vessel and perform Sensor Rezero Procedure as described in Section 3.
4. P
ERFORMING
S
ENSOR
R
EZERO
P
ROCEDURE DOES NOT
R
ETURN
O
UTPUT TO
3.96-4.04
M
A
Verify that CUR CAL output is between 7.2 and 20 mA.
If current is less than 4 mA, follow instructions for Symptom #2.
If current is greater than 4 mA, sensor is damaged. Contact factory.
5. S
ENSOR
O
UTPUT IS NOT
S
TABLE
.
6. O
UTPUT
D
RIFTS
O
VER
T
IME
.
Verify that CUR CAL value is between 7.2 and 20 mA
Check for signs of moisture or water in housing. Contact factory.
7. S
ENSOR M
A O
UTPUT NOT AS
E
XPECTED FOR
S
PECIFIC
L
EVEL
.
8. O
UTPUT
S
IGNALS ARE NOT
A
CCURATE
.
Perform Sensor Rezero procedure when vessel is empty.
Verify proper CURRENT CAL output according to Section 4.
9. S
ENSOR
O
UTPUT IS
G
REATER
T
HAN
20
M
A.
Sensor may have been zeroed with product in the vessel.
Perform Sensor Rezero Procedure as described in Section 3.
Sensor may be over-ranged. Verify CUR CAL value, and that it is appropriate for
the application. Contact factory for assistance.
SYMPTOM:
ACTION:
Anderson typically calibrates Level Transmitters specifically for the application
for which it was intended. The factory calibrated value will be indicated by the
last 5 digits of the sensor Model number to the nearest 1/10WC (inches Water
Column). All zeros indicate that the unit was not calibrated at the factory and
that the unit would be calibrated in the field.
In the sample Model number: SL5089100001234, the calibration is indicated
by the 01234 as 20 mA @ 123.4WC. Therefore, the sensor will output its full
scale value of 20 mA at 123.4WC pressure.
The specific calibration, or SPAN value of the level transmitter is programmable,
and can be modified in the field. Since the SPAN is easily changed, we must
verify that a sensor is properly calibrated to insure overall system accuracy.
This is easily accomplished utilizing a Digital MultiMeter.
1. Determine the SPAN value as dictated by the Model # or the application.
2. Based of the first 3 digits of the sensor Model # determine the MAX CAL value.
SL1/SL5/SX5/LD2/LA2 MAX CAL = 145
SL3/SL7 or SX7 MAX CAL = 835
SL2/SL6 or SX6 MAX CAL = 420
SL4/SL8 or SX8 MAX CAL = 1390
3. Determine the CUR CAL value in mA by performing the mA translation calculation:
CUR CAL = ((SPAN / MAX CAL) x 16) + 4mA
Example: ((123.4 / 145) x 16) + 4 mA = 17.62 mA
If provided as part of a system, the CUR CAL value may also be documented
on a SYSTEM DATA SHEET.
4. Connect DMM as shown in Sect. 2. Move the MODE Switch to CURRENT CAL.
5. The displayed mA value should match the calculated CUR CAL value.
If it does not, the sensor is not correctly calibrated and should be re-Spanned.
Please refer to Section 3.5 of the SL/SX manual for this procedure.
The manual is available on the web at: www.andinst.com
Section 4 - Calibration Verification
10. S
ENSOR
O
UTPUT DOES NOT INCREASE WITH
L
EVEL
,
BUT DOES
INCREASE TO
20
M
A
IF
MODE SWITCH
SET TO
FIELD CAL.
Sensor may have been dropped or over-ranged and permanently damaged.
Contact factory for assistance. P
AGE
5
Table of Contents
Section 1 - General





Page
1.1 Description SL/SX





6
1.2 Description - SX





6
1.3 Specications





7
Section 2 - Installation
2.1 Tank Shell Insallation




10
2.2 Insallation of Level Transmitter



10
2.3 Atmospheric Venting




11
2.4 Electrical Wiring





12
2.5 Transmitter Electronic "Zero" Calibration


14
Section 3 - Calibration
3.1 Field or "Wet" Calibration




15
3.2 Sensor Factory Calibration Overview


18
3.3 Calibration Verication - Utilizing on Board Setup

19
3.4 Calibration Verication - Util