Page 1
Signet 5900 Salinity Monitor
*3-5900.090-1*
3-5900.090-1 Rev. E 3/06 English
Contents
1. Power Connections
2. Compatible Sensor Wiring
3. 4 - 20 mA Current Output Connections
4. Relay Connections
5. Relay Operation
6. Menu Functions
Remove terminal blocks for easy wiring
English
CAUTION!
• Refer to instruction manual for more details.
• Remove power to unit before wiring input and output
connections.
• Follow instructions carefully to avoid personal injury.
7. Temperature Coeffi cient
8. Parts and Accessories
9. Specifi cations
10. Quick Reference Menu Parameters
11. Troubleshooting
12. Maintenance
1.
Freq. IN
Freq. IN
Sen. Pwr.
Std. Sensor
Open Collector
Sensor
LISTED
U
L
77CJ
12-24 V
1. Power Connections
CAUTION!
Never connect 110 VAC or 220 VAC to rear power
terminals. High voltage AC will damage instrument and
void warranty.
12-24 V
10 W
+
Gnd
+
Gnd
AUX
PLS
Iso. Gnd
output
output
10 W
+
-
5900 Terminals
2.
2
1
Tota l
reset
Flow
Patent No. D376,328
3.
Std. Sensor
U
L
Freq. IN
LISTED
77CJ
Freq. IN
Sen. Pwr.
Open Collector
Sensor
12-24 V
10 W
+
+
Iso. Gnd
output
-
PLS
reset
output
Flow
Patent No. D376,328
2
1
Gnd
+
Gnd
Tota l
AUX
2. Compatible Sensor Wiring
20.0
10.0
Silver (Shld)
Black
White
Red
= Double Insulated
-+
= DC or AC power
External power supply
-
12 - 24 VDC
OR
12 - 24 VAC
+
Technical Notes:
• To reduce the possibility of noise interference, isolate AC
power lines from signal lines.
• Maximum 4-20 mA loop impedance is affected by the supply
voltage.
3. 4-20 mA Current Output Connections
Fuse**
1/8A
4 - 20 mA*
+
*
-
+
-
5900 Terminals
4-20
mA
5900
Terminals
Signet Sensor
3-2822-1 (10.0) 0 - 80
3-2823-1 (20.0) PPT
Range (PPT):
Signal IN
Temp. IN
Shld
Iso. Gnd
Technical Notes:
• Use three conductor shielded cable for cable extensions up to
30 m (100 ft) max.
• Cable shield MUST be maintained through cable splice.
Technical Notes:
** 1/8A fuse recommended (customer supplied)
* 4-20 mA output is internally powered (non-isolated),
maximum loop impedance 350 Ω with a 12 V instrument
supply voltage, 950 Ω with a 24 V instrument supply voltage.
To isolate output and prevent ground loop problems:
1. Use monitor device with isolated inputs, or
2. Use separate DC supply for 5900 and monitor device, or
3. Power 5900 with 12 - 24 VAC step down transformer
Page 2
A
4. Relay Connections
Two internal relay contact sets (COM, NO, and NC) may be used
for external device control. Front panel LED annunciators indicate
the activation status of each relay. Each relay can control up to
two devices simultaneously. Relay operation modes include Low
alarm, High alarm, and Proportional Pulse.
Common device connections include:
• Pulse mode - metering pump control
• Pulse mode - solenoid valve control
Relay
Inactive
• Low or High mode - warning lamps
• Low or High mode - bells or sirens
• Low or High mode - external heavy-duty relay
NO C NC
Wiring Example (right)
Device A is powered when relay 2 is inactive (front panel LED
"off"). Power is discontinued when the relay 2 setpoint is reached
(front panel LED "on"). Device B is not powered when relay 2 is
inactive. Power is applied after the relay 2 setpoint is reached.
5. Relay Operation
Relay
Active
NO
C
NC
+
External AC/DC
NO
Relay 1Relay 2
C
5900 Terminals
NC
-
+
-
Device
A
power
-
NO C NC
+
Device
B
Technical Notes:
• Maximum relay contact ratings: 5 A @ 30 VDC, 5 A @ 125
VAC, or 3 A @ 250 VAC
• An external heavy-duty relay must be used for devices with
surge currents or operating currents that exceed the above
specifi cations.
5.1 LOW alarm mode
The relay is active when the solution salinity in Parts Per Thousand (PPT) drops below the setpoint, and is inactive when the
solution salinity rises above the setpoint plus hysteresis.
5.2 HIGH alarm mode
The relay is active when the solution salinity (PPT) rises above
the setpoint, and is inactive when the solution salinity drops below
the setpoint plus hysteresis.
PPT
Low setpoint =
djustable hysteresis =
Adjustable hysteresis =
Relay active =
Relay inactive =
5.3 Proportional PULSE mode
The proportional pulse relay confi guration is primarily designed for metering pump control. The operator is prompted to enter a minimum
and maximum salinity setpoint and maximum pulse rate for the assigned relay. Relay pulse width is fi xed at 130 ms.
• Metering pump chemical addition (dry contact activation type required)
Example 1: As the process salinity (PPT) rises above the minimum pulse setpoint (10 PPT) the relay begins pulsing, triggering
the metering pump for deionized water addition. As the process
salinity continues to rise, pulsing accelerates proportionally until
the maximum programmed pulse rate of 300 pulses/minute and
setpoint (30 PPT) is reached, forcing the process salinity back
down to intended levels (e.g. < 10 PPT).
Example 2: As the process salinity (PPT) falls below the minimum
pulse setpoint (30 PPT) the relay begins pulsing, triggering the metering pump for chemical addition. As the process salinity continues
to decrease, pulsing accelerates proportionally until the maximum
programmed pulse rate of 300 pulses/minute and setpoint (10 ppt)
is reached, forcing the process salinity back up to intended levels
(e.g. < 30 PPT).
High setpoint =
Relay active =
Relay inactive =
PPT
300 pulses
Relay 1 Rate:
300 pulses
0 pulses
PPT
2 Signet 5900 Salinity Monitor
Relay 1 Rate:
300 Pulses/min >
10
PPT
Relay 1
or Relay 2
Relay 1: Pulse
30.0000>
10.0000
30
PPT
Relay 1
or Relay 2
10
PPT
300 Pulses/min >
Relay 1: Pulse
30.0000
10.0000>
0 pulses
30
PPT
PPT
Page 3
6. Menu Functions
ENTER
To access either CALIBRATE or OPTIONS menus, press and hold
the ENTER key as illustrated (right):
Press &
hold for
access:
ENTER
Menus:
• VIEW menu: Displayed during standard operation. The
operator can navigate through the menu by pressing UP or
DOWN arrow keys.
• CALIBRATE Menu: Contains all critical display setup
and output parameters. A security code feature prevents
unauthorized tampering. The operator is required to enter an
access code for menu access. The same code also unlocks
OPTIONS menus.
• OPTIONS Menu: Contains setup and display features
accessed for minor display or output adjustments.
• Reversible Dials (right)
The 5900 includes a dial kit with 6 reversible dial faces and
units decals (factory installed dial: 0 - 100). See dial kit for
additional information.
6.1 VIEW Menu
To G
Choose:
Menu Displays A - G:
(Factory default displays shown in menu
column 1)
A.
40.0 PPT
+25.0 C
VIEW
CALIBRATE
2s 5s
OPTIONS
PP
T
PPT
0
10
0
100
Change: Save:
A. Active display of salinity (PPT) and
temperature in degrees celsius (°C) or
fahrenheit (°F).
B. Display of conductivity and
temperature.
C. Loop output display shows the loop
current output level.
D. Range display shows the programmed
min and max meter dial range.
E. Relay 1 display shows the
programmed operation mode and
setpoint for relay 1.
F. Relay 2 display shows the
programmed operation mode and
setpoint for relay 2.
G. Last calibration shows a user defi ned
setup date for maintenance records.
This feature is not an internal timer or
calendar.
B.
C.
D.
E.
22.0 mS/cm
Loop Output:
Min→Max: PPT
0.0000→40.0000
Relay 1: Low
20.0000 PPT
Relay 2: High
F.
40.0000 PPT
G.
+25.0 C
20.00 mA
Last CAL:
01-01-99
Signet 5900 Salinity Monitor
To A
3
Page 4
6.2 CALIBRATE Menu
Requirements
System calibration (WET CAL) is required for fi rst-time system setup or periodic sensor verifi cation. System calibration can be performed
with a solution of known salinity, or by comparison to a refractometer. Refer to the WET CAL procedure for calibration details.
Press and hold ENTER key for 2 seconds:
CALIBRATE: ----
is displayed.
Enter Key Code
Press keys in sequence to enter menu:
CALIBRATE: XXXX
is displayed.
Enter Key Code
Menu Settings A - J:
(Factory default displays shown in menu
column 1)
A. Selects cell type and cell value:
• Standard cells: 10.0, or 20.0. Use
10.0 or 20.0 settings.
• Custom (certifi ed) cells: 00.0000
-999999.
B. Selects displayed units; should be
selected for conductivity display INFO
ONLY.
C. Sets PPM factor when PPM display
units are selected, 0.01 - 9.99.
D. Sets Min→Max meter dial range
(factory installed dial, 0 - 100).
Contact factory for custom dial
confi gurations. Does not effect 4 to
20 mA output; set seperately.
To J
Cell: Standard
A.
B.
C.
D.
E.
F.
G.
10 >
Units:
PPM Factor:
2.00 >
Min
→
0.0000
WET CAL:
>
Relay 1: Low
20.00 PPT >
Relay 1 Hys:
4.0000 PPT >
Choose:
mS
Max: PPT
→40.000
Cell: Standard
.01 .1 1 10 20
Units:
uS mS PPM k M
PPM Factor:
2.00
Min→Max: PPT
0.0000
>
→40.000
WET CAL:
Press <ENTER>
Relay Low or High Mode Selected
Relay 1: Low
20.00 PPT >
Mode (top row)
Setpoint (bottom row)
Relay 1 Hys:
04.0000 PPT >
Change:
>
Cell: Custom
10.020
Units:
uS mS PPM k M
PPM Factor:
1.95
Min
→
Max: PPT
00000.0
→0080.00
Relay 1: Low
10.0000 PPT >
Relay 1 Hys:
02.0000 PPT >
Save:
>
ENTER
"SAVING"
displayed
E. Selects WET CAL procedure for fi rst
time system setup or periodic system
recalibration.
Menu items F - I repeat for relay 2
setup.
F. Sets relay operation mode Low or
High, and setpoint, 00.0000 - 999999.
units.
G. Sets relay hysteresis, 00.0000 -
999999. units. Set to zero to disable
feature
H. Sets relay minimum and maximum
pulse setpoint, 00.0000 - 999999.
units.
I. Sets relay pulse rate, 000 - 300
pulses/minute.
J. Sets user defi ned setup date for
maintenance records. This feature is
not an internal timer or calendar.
Relay 1 Pulse
H.
00.0000
Relay 1 Rate
I.
120 Pulses/min>
J.
To return to
VIEW:
Last CAL:
01-01-98 >
→
30.0000>
Relay Pulse Mode Selected
Relay 1 Pulse
00.0000
Mode (top row)
Divisor (bottom row)
120 Pulses/min
Mode (top row)
Divisor (bottom row)
To A
quick
press
To restore original value:
→
30.0000>
Relay 1 Rate
Last CAL:
01-01-98
Relay 1 Pulse
10.0000
→
30.0000>
Relay 1 Rate
025 Pulses/min
Last CAL:
02-05-98
quick
press
4 Signet 5900 Salinity Monitor
Page 5
6.3 WET CAL Procedure
Requirements
Electronic calibration is performed to exacting standards by Signet. System calibration will reduce errors which may be caused by sensor
wire lengths longer than the standard 15 foot length. Wire lengths of 100 feet are acceptable; cable shield must be maintained through
cable splice. Calibration may be done by known solution value or by comparison to a refractometer.
Calibration with NIST Traceable Solutions:
When using calibration standards traceable to the National Institute of Standards and Technology (NIST), care must be taken to
ensure the sensor and test solution are at the solution temperature specifi ed on the test solution label. Care must be taken to prevent
contamination of the calibration solution. It is recommended to thoroughly rinse the sensor in a small amount of test solution (then
discard) before placing in any test solution for calibration purposes. The 2-step WET CAL process fi rst allows for verifi cation or
calibration of temperature, followed by verifi cation or calibration of salinity (PPT) using a known process solution.
WET CAL Procedure (Solution calibration iIllustrated below)
Note: Always match test solution manufacturer's temperature recommendation.
Display: To Change: To Accept:
Temperature:
+25.7°C >
A) Solution cal.: place sensor
and thermometer into standard
solution then press right arrow
key.
Salinity
20.0 PPT
Measured salinity shown
after temperature calibration.
To exit WET CAL at any time without
saving changes:
Temperature:
+025.0°C >
A) Solution cal.: allow approx. 3
minutes for stabilization, then
enter solution temperature.
Salinity
20.0 PPT
Enter known solution salinity or
reference reading.
Optional: enter zero to reset factory calibration
(zero MUST be re-entered if currently displayed
to reset factory calibration).
quick press
Press to accept temperature
ENTER
calibration.
Temperature:
+025.0°C >
Salinity
20.0 PPT
ENTER
Press to accept salinity
calibration; display returns to
CALIBRATE MENU in 3
seconds
Signet 5900 Salinity Monitor
5
Page 6
6.4 OPTIONS Menu
Press and hold ENTER key for 5 seconds:
OPTIONS: ----
is displayed.
Enter Key Code
Press keys in sequence to enter menu:
OPTIONS: XXXX
is displayed.
Enter Key Code
Menu Settings A - I:
(Factory default displays shown in menu
column 1)
A. Selects LCD display contrast: 5 levels
B. Selects display decimal:
. to
*****
***.**
C. Selects LCD display averaging:
Off = 0 seconds, Low= 4 seconds,
High= 8 seconds (affects 4-20 mA
output)
D. Sets 4 mA output setpoint. 4 mA and
20 mA setpoints are reversible.
E. Sets 20 mA output setpoint. 20 mA
and 4 mA setpoints are reversible.
F. Sets 4 mA current output: 3.0 to 5.0 mA
(overrides 4.00 mA factory calibration)
Press keys in sequence
will appear during code entry.
1
Choose:
↓I
A.
Contrast Low -- -- -- -- -- High
B.
Conductivity Display decimal
C.
Averaging
D.
Loop output Set 4 mA
E.
Loop output Set 20 mA
F.
Loop output 4 mA adjust
G.
Loop output
Change:
0s 4s 8s
20 mA adjust
to continue,
2
3
Save:
ENTER
"SAVING"
briefly
displays
G. Sets 20 mA current output: 19 to 21 mA
(overrides 20.00 mA factory calibration)
H.
Temp. display
C or F
H. Selects temperature display: °C or °F
Recalibration is not required when
switching from celsius to fahrenheit.
I. Selects temperature compensation
I.
Temp. comp %
To return to
VIEW:
quick
press
Factory default: 2.00
↑A
To restore original value:
quick
press
7. Temperature Coeffi cient (Temp. Comp. %)
Salinity measurement is dependent on temperature. Temperature dependence is usually expressed as the relative change per °C, commonly known as percent/°C change from 25°C, or slope of the solution.
Slopes can very signifi cantly depending on process solution type. The factory default temperature compensation factor is 2.00%/°C.
This setting satisfi es salinity applications.
8. Parts and Accessories
Splashproof rear cover
#3-5000.395
(code 198 840 227)
5 x 5 inch adapter plate for
Signet retrofi t
3-5000.399
(code 198 840 224)
Optional surface mount bracket
3-5000.598
(code 198 840 225)
• Power supply, 120 VAC - 24 VAC, 3-5000.075
• Front snap-on bezel, 3-5000.525 (code 198 840 226)
• Assorted conductivity unit/multiplier decal sheet, 3-5500.612 (code 198 840 231)
• 5900 Salinity Monitor Instruction Sheet, 3-5900.090-1 (code 159 000 080)
6 Signet 5900 Salinity Monitor
Page 7
9. Specifi cations
General
Compatible sensors: Signet 3-28XX-1 Standard and
Certifi ed Series Sensors
Accuracy: ±0.5% PPT
Input range: 1 to 80 PPT optically isolated
Enclosure:
• NEMA 4X/IP65 front
• Dimensions: 1/4 DIN, 96 x 96 x 88 mm (3.8 x 3.8 x 3.5 in.)
• Case materials: ABS plastic
• Keypad material: Sealed 4-key silicone rubber
• Weight: 500 g (18 oz.)
Display:
• Type: Microprocessor controlled air-core meter movement and
backlit alphanumeric 2 x 16 LCD
• Update rate: <2s
• Contrast: User selected
• Relay annunciators: 2 LEDs
• Displayed units: PPT (Salinity), µS, mS, kΩ, MΩ, PPM (TDS)
UltraPure Pure Rinse
Signet Conductivity Sensor Ranges
2823-1
2822-1
2821-1
2820-1
2819-1
Sensor Models
0.055 1 10 100 200 1,000 10,000 200,000 400,000
Conductivity Range (S)
(10 kΩ)(18 MΩ)
Salinity Range
Relay outputs (2 sets):
• Mechanical SPDT contacts
• Max. voltage rating: 5 A @ 30 VDC, 5 A @ 125 VAC, or
3 A @ 250 VAC, (power factor = 1.0)
• Hysteresis: User adjustable
Environmental
Operating temp.: -10 to 55°C (14 to 131°F), 50°C (122°F) max.
with optional rear cover
Storage temp.: -15 to 80°C (5 to 176°F)
Relative humidity: 0 to 95%, non-condensing
Altitude: 4000 m max.
Pollution degree: 2
Electrical
Power requirements:
• 12 to 24 VDC or 12 to 24 VAC, unregulated, 50-60 Hz,
10 W max.
Temperature input:
• PT1000, 0 to 100°C (32 to 212°F), optically isolated
Dimensions:
Front View
Relay 1
96 mm (3.8 in.)
2
0
4
ppt
62.50 PPT
+25.0 C
6
Relay 2
8
10
96 mm
(3.8 in.)
Current output:
• 4 to 20 mA, non-isolated, internally powered, fully adjustable and
reversible
• Update rate: <2s
• Max loop impedance: 350 Ω with a 12 V instrument supply
voltage, 950 Ω with a 24 V instrument supply voltage
• Accuracy ±0.1% of max range
Noise immunity: EN50082-2
Noise emissions: EN55011
Safety: EN61010-1
Agency Approvals
• CE, UL listed
• Manufactured under ISO 9001
Panel Gasket
Side View
Mounting Panel
Mounting Clamp
91 mm
(3.6 in.)
Optional
Splashproof
Rear Cover
88 mm
(3.5 in.)
Rear View
U
L
¨
Signet
Model #3-5900
Signet 5900 Salinity Monitor
Signet Monitor
88 mm (3.5 in.)
Signal IN
LISTED
77CJ
12-24 V
10 W
+
NO
-
Red wire
Temp. IN
C
White wire
NC
Black wire
Iso. Gnd
NO
ENTER
76 mm (3 in.)
96 mm (3.8 in.)
88 mm (3.5 in.)
Panel Cutout
+
-
Shld
Silver wire
4-20
mA
Salinity
88 mm
(3.5 in.)
Relay 1Relay 2
Patent No. D 376,328
Patent No. 5,708,363
C
NC
92 x 92 mm
(3.62 x 3.62 in.)
7
Page 8
10. Quick Reference Menu Parameters
10.1 VIEW Menu Setup Parameters
Menu
Parameters
A.
B.
C.
0.0 PPT
+25.0 C
Loop Output:
20.00 mA
→
Max: PPT
Min
0.000
→
40.000
Relay 1: Low
D.
20.0000 PPT
Relay 2: High
E.
40.0000 PPT
Last CAL:
F.
01-01-98
Display
Description
• Process salinity
• Process temperature
Current loop
output
Min→Max meter
dial range
• Relay 1 mode
• Relay 1 setpoint
• Relay 2 mode
• Relay 2 setpoint
Last calibration
date
Range
• 1 to 80 PPT
• Process temperature
3 - 21 mA
0.055 - 400,000 mS
Low, High, or Pulse,
Low, High, or Pulse,
00 - 00 - 00 39 - 39 - 99
Factory
Default
n/a
n/a
n/a
0.0000 - 40.000 PPT
Low
20 PPT
High
40 PPT
01 - 01- 98
10.2 CALIBRATE Menu Setup Parameters
Menu
Parameters
Cell: Standard
A.
B.
C.
1 >
Units:
mS
Min→Max: PPT
0.0000→40.0000>
WET CAL:
D.
>
Relay 1: Low
E.
10.0000 PPT
Relay 1 Hys:
F.
4.0000
Relay 1: Pulse
G.
10.0000→30.0000>
Display
Description
• Sensor type:
and cell constant
Process
Units
Min→Max
meter dial range
System Calibration
Procedure
• Relay 1 mode
• Relay 1 setpoint
Relay 1
hysteresis
• Relay 1 mode
• Relay 1 range
Range
Standard sensor cells:
•
0.01, 0.1, 1.0, 10.0, 20.0
•
Custom sensor cells:
00.0000 - 9999999
S, mS, PPT
k, or M
1 to 80
Wet Solution or
resistor calibration
• Low or High
• 00.0000 - 9999999.
• Low or High
• 00.0000 - 9999999.
• Pulse
• 00.0000 - 9999999.
Factory
Default
10.0
mS
0.0000 - 40.000 PPT
n/a
Low
10.0000 PPT
4.0000 PPT
10.0000 - 30.0000
PPT
Relay mode and
setpoint displays
repeat for relay 2
setup
Relay 1 Rate:
H.
120 Pulses/min >
I.
8 Signet 5900 Salinity Monitor
Last CAL:
01-01-98
Relay 1
pulse rate
Last calibration
date
000 - 300
pulses/minute
00 - 00 - 00 39 - 39 - 99
120
pulses/minute
01 - 01 - 98
Page 9
10.3 OPTIONS Menu Setup Parameters
Menu
Parameters
A.
B.
C.
D.
E.
F.
G.
H.
I.
Contrast:
3 >
Display Decimal:
***.**
Display Average:
Low >
Set 4 mA:
0.0000 PPT
Set 20 mA:
40.0000 PPT
4 mA Adjust:
4.00 mA
20 mA Adjust:
20.00 mA >
Temperature:
C
Temperature
Comp %: 2.00 >
Display
Description
Display
contrast
Display
decimal
Display
averaging
4 mA
setpoint
20 mA
setpoint
4 mA
adjust
20 mA
adjust
Temperature
display
Temperature comp.
percentage
Range
0 - 5
*.**** -
.
*****
Off= 0 sec., Low= 4 sec.,
High= 8 sec.
00.0000 -
999999.
00.0000 -
999999.
3.0 - 5.0 mA
19 - 21 mA
Celsius or
Fahrenheit
0.00 % -
9.99 %
Factory
Default
3
***.**
Low= 4 sec.
00.0000
PPT
40.0000
PPT
4.00 mA
20.00 mA
C
2.00 %
Signet 5900 Salinity Monitor
9
Page 10
11. Troubleshooting
Display
1. 0.0 /PPT
- - - - - - °C
or
- - - - - - - PPT
- - - - - - °C
2. 0.0 PPT
25.0°C
3. - - - - - - - PPT
25.0°C
Problem
Temperature wiring shorted or
temperature element in sensor
bad.
A) Sensor not connected or
improperly connected.
B) Pipe empty or sensor not in
solution.
C) Wrong range selected.
D) TC% set incorrectly for
process temperature.
E) Sensor wiring open.
F) Water too cold for high-purity
water measurement.
A) Sensor not connected or
improperly connected.
B) Wrong range selected.
(cell constant too large)
C) TC% set incorrectly for
process temperature.
Solution
A) Verify sensor wiring.
B) Verify instrument temperature input:
• Remove Black and White sensor wires from rear Temp. IN and Iso.
Gnd terminals, then place a 1100 Ω resistor across terminals.
• Power instrument and verify approximately 26.0°C (79°F) on display.
If instrument reads correctly, replace sensor. If error condition
persists, instrument requires factory service.
A) Verify sensor wiring
B) Fill pipe or place sensor in process solution.
C) Choose a sensor with cell constant adequate for process solution.
D) Set TC% to 2%
E) Replace sensor
F) See specifi cations section for recommended high-purity range and
temperature requirements.
A) Verify sensor wiring including cable splice; cable shield must
continue through splice.
B) Choose a sensor with cell constant adequate for process solution.
C) Set TC% to 2%.
4. Too Much Error
Check Sensor
5. Reset to Factory
Calibration
6. SETUP READ ERROR
Press any key
Temperature input out of
tolerance during WET CAL
procedure.
Zero entered as solution
conductance or resistance
during WET CAL step 2.
Power fault occurred while
saving setup menu entry.
Exit WET CAL procedure by pressing UP and DOWN arrow keys
simultaneously, then refer to solution steps 1B above to verify sensor
temperature input.
Measured conductivity, resistivity or PPT entered as zero during WET
CAL step 2. Operator can enter zero to quickly recall factory defaults.
Press any key to reload factory defaults then reprogram conductivity
system setup parameters.
12. Maintenance
Clean the instrument case and front panel with a soft cloth and a mild liquid soap solution.
10 Signet 5900 Salinity Monitor
Page 11
Signet 5900 Salinity Monitor
11
Page 12
George Fischer Signet, Inc. 3401 Aerojet Avenue, El Monte, CA 91731-2882 U.S.A. • Tel. (626) 571-2770 • Fax (626) 573-2057
For Worldwide Sales and Service, visit our website: www.gfsignet.com • Or call (in the U.S.): (800) 854-4090
3-5900.090-1 Rev. E 3/06 English © George Fischer Signet, Inc. 2001 Printed in U.S.A. on recycled paper
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