GF Signet 8860 User manual

page 1 of 12
+GF+ SIGNET 8860 Dual Channel Conductivit /Resistivit Controller
CAUTION!
• Remove power to unit before wiring input and output connections.
• Follow instructions carefull to avoid personal injur .
• This product should onl be used for the purposes and in the manner described in this manual.
+GF+ SIGNET 8860 Dual Channel Conductivity Resistivity Controller ENGLISH
Installation
1. Punch out panel and de-burr edges. Recommended
clearance on all sides between instruments is 1 inch.
2. Place gasket on instrument, and install in panel.
3. Slide mounting bracket over back of instrument until
quick-clips snap into latches on side of instrument.
4. Connect wires to terminals.
5. To remove, secure instrument temporaril with tape from
front or grip from rear of instrument. DO NOT RELEASE.
Press quick-clips outward and remove.
6. If cleaning is necessar , wipe the front of the unit with a
damp cloth.
7. The live contacts on the back of this unit must be covered
to avoid accidental shock hazard.
Specifications
General
Compatible electrodes: ‡ SIGNET 3-28XX-1 Standard or
Certified Conductivit /Resistivit Sensors
Sensor input range:
• Conductance: 0.055 µS/cm to 400.00 mS/cm
• Resistivit : 10 KΩ•cm to 18.26 MΩ•cm
• TDS: 0.0 to 999999. ppm
• Temperature:
-25 to 120°C (-13 to 248°F) PT 1000; 25ºC = 1096 Ω
Accurac :
Conductivit /Resistivit : ± 2% of reading
Temperature: ± 0.5 ºC (0 to 100 ºC)
Power requirements:
3-8860-AC: 100 to 240 VAC ± 10% , 50-60 Hz, 20VA or
11 to 24 VDC ±10%, regulated, 0.5 A max
3-8860: 11 to 24 VDC ±10%, regulated, 0.5 A max
Displa (Alphanumeric 2 x 16 LCD) :
• Contrast: User selected, 5 levels
• Update rate: 1.5 seconds
Current outputs (3 available):
• 4 to 20 mA, isolated, full adjustable and reversible
• Max loop impedance:
150 Ω @ 12 V
450 Ω @ 18 V
750 Ω @ 24 V
• Update rate: ≈ 100 mS
• Accurac :
±0.03 mA @ 25°C, 24 VDC
Open-collector outputs (2 available):
• Operational settings: Hi, Lo, Pulse , Off, USP
• H steresis: Adjustable
• Time dela : 0 to 6400 s.
• Max pulse rate: 400
pulses/min.
• 50 mA sink or source,
30 VDC max. pull-up
voltage
Alarm contacts (up to 4
SPDT rela s available )
Max voltage rating: 5 A @ 250 VAC, 5 A @ 30 VDC, resistive
• Operational settings: Hi, Lo, USP, Pulse , Off
• H steresis: Adjustable
• Time dela : 0 to 6400 s.
• Max pulse rate: 400 pulses/min.
• isolation: between open contacts: 500 V Minimum
Enclosure:
• Rating: NEMA 4X/IP65 front (NEMA 4X Rear cover available)
• Materials: Window: Pol urethane-coated pol carbonate
Ke pad: Sealed 4-ke silicone rubber
• Weight: 8860-AC: 1.28 lb/ 0.58 kg 8860: 1.2 lb/0.55 kg
Environmental
• Ambient operating temperature: -10 to 55°C (14 to 131°F)
• Storage temperature: -15 to 80°C (5 to 176°F)
• Relative humidit : 0 to 95%, non-condensing
• Maximum altitude: 2000 m (6562 ft)
Standards and Approvals
• CSA, CE, UL listed
Immunit : EN50082-2
Emissions: EN55011
Safet : EN61010
• Manufactured under ISO 9001, ISO 14001
• Insulation categor : II
• Pollution degree: 2
quick-clip
gasket on
front side
of panel
panel
terminals
mounting
bracket
RELAY 1
RELAY 2
RELAY 3RELAY 4
N/C N/O COMN
/C N/O COMN/C N/O COMN/C N/O COM
RELAY3,4
OPEN
COLL3,4
- OPEN COLL 4
+
OPEN COLL 4
-
OPEN COLL 3
+
OPEN COLL 3
-
LOOP2
+
LOOP2
-
LOOP3
+
LOOP3
-
LOOP1
+
LOOP1
SHLD
ISOGND
TEMP1
SGNL1
SHLD
ISOGND
TEMP2
SGNL2
POWER
OUTPUTOPTION
Æ
L
N
-
+
Conductivity/Resistivity
C1 23.45 uS/cm
C2 8.72 uS/cm
Relay 1 Relay 2
ENTER
Internal open-collector
output circuit
Outputs
-
+
-
+
3-8860.090 A-7/00 English

page 2 of 12 +GF+ SIGNET 8860 Dual Channel Conductivit /Resistivit Controller
Electrical Connections
Caution: Failure to full open terminal jaws before removing wire ma
permanentl damage instrument.
This product must be provided with a means to disconnect all current
carr ing conductors connected to the main AC line, or, as part of the
building installation.
Wiring Procedure
1. Remove 0.35- 0.47 in. (9-12 mm) of insulation from wire end.
2. Press the orange terminal lever downward with a small screwdriver to open
terminal jaws.
3. Insert exposed (non-insulated) wire end in terminal hole until it
bottoms out.
4. Release orange terminal lever to secure wire in place. Gentl
pull on each wire to ensure a good connection.
Wiring Removal Procedure
1. Press the orange terminal lever downward with a small
screwdriver to open terminal jaws.
Wiring Tips:
• Do not route sensor cable in conduit containing AC power wiring - electrical
noise ma interfere with sensor signal.
• Routing sensor cabling in grounded metal conduit ma prevent moisture
damage, electrical noise, and mechanical damage.
• Seal cable entr points to prevent moisture damage.
• Do not insert two wires into a single terminal. If necessar , splice the wires
together before inserting into the terminal.
RELAY 1 RELAY 2 RELAY 3 RELAY 4
N/C N/O COM N/C N/O COM N/C N/O COM N/C N/O COM
RELAY 3,4
OPEN
COLL 3,4
- OPEN COLL 4
+
OPEN COLL 4
-
OPEN COLL 3
+
OPEN COLL 3
-
LOOP 2
+
LOOP 2
-
LOOP 3
+
LOOP 3
-
LOOP 1
+
LOOP 1
SHLD
ISO GND
TEMP 1
SGNL 1
SHLD
ISO GND
TEMP 2
SGNL 2
POWER
OUTPUT OPTION
Æ
L
N
-
+
11 - 24V
0.5 A
L
N
-
+
3-8860.610A 4/00
100 - 240V
50-60Hz, 20VA
~
LISTED
77CJ
L
®
U
Caution:
Electrical shock hazard exists!
♦
Never connect live AC lines to the
instrument.
♦
Alwa s connect a ground wire to the
ground terminal• when using AC power.
102 mm
(4.0 in.)
56 mm
(2.2 in.)
96mm (3.8 in.)
96 mm
(3.8 in.)
Panel Cutout
92 x 92 mm
(+ 0.8, - 0 mm)
3.6 x 3.6 in.
(+0.031, -0 in.)
Optional
Rear Cover
*

page 3 of 12
+GF+ SIGNET 8860 Dual Channel Conductivit /Resistivit Controller
Sensor Input Connections
• The 8860 will accept two independent sensor input signals. The
two sensors ma be of different cell constant values.
• Do not route sensor cable in an conduit containing AC power
wiring - electrical noise ma interfere with the signal.
• Use three conductor shielded cable for cable extensions up to
30 m (100 ft) max.
• Cable shield MUST be maintained through cable splice.
• Resistivit measurements from 10 MΩ to 18 MΩ are limited to
solution temperatures from 20 °C to 100 °C.
Relay and Open Collector Functions
The 8860 is equipped with 4 SPDT rela s that can be configured
for High alarm, Low alarm, Proportional pulse or USP operation.
•Low: Output triggers when process variable is less than
setpoint.
•High: Output triggers when process variable is higher than
setpoint.
•Off: Disables output pulse.
H steresis
Output Active
Output Inactive
Time
Setpoint
Process
10
5
Rela 1 Rng: uS
10.00 --> 5.00 >
Rela 1 PlsRate:
100 Pulses/min >
10 uS = 0 pulses/min.
7.5 uS =50 pulses/min.
5 uS  = 100 pulses/min.
The RANGE defines where the pulsing starts
and where it reaches the maximum rate.
Pulse rate
µS ----->
0 pulses
100 pulses
The Pulse Rate determines what the
maximum rate will be. The 8860 maximum
capabilit is 400 pulses per minute.
(18 MΩ) (10 kΩ)
2819-1
2823-1
Conductivity Range (µS)
+GF+ SIGNET Sensor Ranges
Sensor Models
Ultra-
Pure Rinse
Pure
2821-1
2822-1
2820-1
0.055 1 10 100 200 1,000 10,000 200,000 400,000
• Pulse Operation
The output emits a 100 mS pulse at a rate defined b the
Source, Pulse Range and Max PlsRate settings, and b the
process condition. The maximum pulse rate is 400 pulses per
minute.
Example: As the process falls below 10 µS the output will start
pulsing in relation to the process value, the max pulse endpoint
and the programmed pulses/min. Pulse rate will increase as
the process approaches the programmed endpoint.
RED
WHITE
BLACK
SILVER (SHLD)
SHLD
ISO GND
TEMP 2
SGNL 2
SHLD
ISO GND
TEMP 1
SGNL 1
RED
WHITE
BLACK
SILVER (SHLD)

page 4 of 12 +GF+ SIGNET 8860 Dual Channel Conductivit /Resistivit Controller
Display
C1 1000.00 µS/cm
C2 30.00 µS/cm
C1 1000.00 µS/cm
25.0 ºC
C2 30.00 µS/cm
25.0 ºC
Ratio C1: C2
97.00%
Loop 1 12.03 mA
Loop 2 5.69 mA
Loop 3 13.7 mA
R3 ON R4 PLS
Last Cal
6-30-00
Monitor Loop 1 and Loop 2mA output simultaneousl .
This displa will revert to the factor preset after 10
minutes.
Monitor Loop 3 and status of Rela s 3 and 4
(Open Collector 3 and 4). This displa will revert to the
factor preset after 10 minutes.
Monitor date for scheduled maintenance or date of
last calibration. This displa will revert to the factor
preset after 10 minutes.
View Menu
Description
Monitor C1 Conductivit and C2 Conductivit
simultaneousl . This is the factor preset view when
Channel 2 is ON.
Monitor Channel 1 Conductivit and Channel 1
Temperature. This is the factor preset view when
Channel 2 is OFF.
Monitor Channel 2 Conductivit and Channel 2
Temperature. This view is available onl when
Channel 2 is ON.
Monitor Percent Reject, Difference, or Ratio
(Channel 1 to Channel 2 or Channel 2 to Channel 1)
Navigating the VIEW menu:
♦ The VIEW menu is Normal Operation. You can select from 7 different information displa s at an time without interrupting the s stem.
♦ To change the displa in VIEW mode, press the UP or DOWN arrow ke s. The seven displa s will scroll in a continuous loop.
♦ You cannot make an changes to the s stem from the VIEW menu.
♦ No access code is necessar to change the displa .
1. 2.
OPTIONS
CALIBRATE
VIEW
2s 5s
Press &
hold for
access:
ENTER
Press the ENTER ke for 2 seconds to access the
CALIBRATE menu, or for 5 seconds to access the
OPTIONS menu.
Navigating the CALIBRATE and OPTIONS menus
Access Code
Both the CALIBRATE and OPTIONS menus require the entr of the ACCESS CODE to prevent unauthorized access.
.
Conductivity Resistivity
C1 23.45 µS
C2 8.72 µS
Relay 1 Relay 2
ENTER
CALIBRATE: ----
Enter Key Code
CALIBRATE: *---
Enter Key Code
CALIBRATE: **--
Enter Key Code
CALIBRATE: ***-
Enter Key Code
Access code: Press UP-UP-UP-DOWN in sequence.
Standard >
Chan 1 Cell:
The ACCESS CODE will take ou to the first
item in the CALIBRATE or OPTIONS menu

page 5 of 12
+GF+ SIGNET 8860 Dual Channel Conductivit /Resistivit Controller
4.
The displa will have a flashing element. Use the UP and DOWN ke s to change the setting. The RIGHT ARROW ke advances the
flashing element.
The example below illustrates editing the Rela 1 Setpoint from a setting of 17.5000 µS to a new setting of 6.5000 µS.
Relay 1 Setpnt:
17.5000 µS
Relay 1 Setpnt:
07.5000 µS
ENTER
Relay 1 Setpnt:
0
7 .5000 µS
Relay 1 Setpnt:
06.5000 µS
Relay 1 Setpnt:
Saving
Relay 1 Setpnt:
06.5000 µS >
Standard >
Chan 1 Cell:
17.5000 >
Relay 1 Setpnt:
Use UP and DOWN ke s to scroll
through the items in the CALIBRATE
or OPTIONS menus.
When ou need to edit a setting
press the RIGHT ARROW ke .
3.
Press the UP and DOWN ke s
simultaneousl during an
flashing displa to revert to the
last saved value.
• All output functions remain active during calibration, except:
If the "..Set Conductivit " or "..Set Temperature" values are changed, all output functions related to that value will be held until the unit
returns to normal operation.
Repeat steps 3 and 4 until all necessary changes are complete.
Finished Editing?
Press the UP and DOWN
ke s simultaneousl from
this displa to return to the
VIEW menu and normal
operation.
Made an Error?

page 6 of 12 +GF+ SIGNET 8860 Dual Channel Conductivit /Resistivit Controller
This menu enables ou to tailor the 8860 functions for our application.
Display
Chan 1 Cell:
Standard >
Chan 1 Cell:
1.0 >
Chan 1 Cell:
1.015 >
Chan 1 Set:
Temperature >
Chan 1 Set:
Conductivity >
Chan 1 Units:
µS/cm >
Chan 1 TDS:
2.0000 µS/PPM >
Function:
Ratio C1:C2 >
Loop 1 Source
Chan 1 Cond
>
Loop 1 Range: µS
0.0000-100.000 >
The TDS factor can onl be set in PPM.
When Channel 2 is active (see OPTIONS menu)
all the settings above are repeated
Make sure that the value entered here is consistent
with the UNITS of the SOURCE.
Select the INPUT SIGNAL (or calculated FUNCTION)
represented b this 4-20 mA output: Chan 1 Cond,
Chan 2 Cond, Chan 1 Temp, Chan 2 Temp, Function
Calculate the relationship between C1 and C 2:
Percent Reject C1 to C2 or C2 to C1
Ratio C1/C2 or C2/C1
Difference C1-C2 or C2-C1
Repeat Settings for LOOP 2 and LOOP 3
Set the Source and Ran
g
e for 3 Current Loo
p
Out
p
uts
Select from the following options: µS/cm, mS/cm,
kΩ•cm, MΩ•cm, PPB, PPM
Adjust the temperature of the s stem based on an
accurate external reference.
For use with STANDARD sensors: Perform this single
-
point wet calibration for most accurate results. Not
required for CUSTOM sensors except for periodic
s stem accurac confirmation.
If the Units selection is PPM or PPB, ou can set the
ratio of Total Dissolved Solids to µS. See section 3 of
this manual for additional information.
NOTE: Enter "0" (all zeroes) in the "Set
Conductivit " field to restore factor values to both
TEMPERATURE and CONDUCTIVITY calibration.
All Outputs and displa s associated with this
setting will be held until ou return to VIEW menu
and normal operation.
For CUSTOM sensors: Enter the precise cell constant
from the ceretificate provided with our sensor, or from
the information label on the sensor.
Calibrate Menu
Select CUSTOM onl if ou are connecting a certified
conductivit sensor. Select STANDARD for all other
s stems.
Description
For STANDARD sensors: Select from these options:
0.01, 0.1, 1.0, 10.0 or 20.0.

page 7 of 12
+GF+ SIGNET 8860 Dual Channel Conductivit /Resistivit Controller
USP Limits
USP (United States Pharmacopoeia) has defined a set of conduc-
tivit values (limits) to be used for pharmaceutical water monitor-
ing. This standard requires non-temperature compensated
conductivit measurement be used to warn if the conductance
approaches the USP limit. The limits var according the tempera-
ture of the sample.
The 8860 has the USP limits stored in memor . It will automati-
call determine the proper USP limit based on the measured
temperature.
Using the USP function
In the 8860, USP setpoints are defined as a percentage below the
USP limit, so a USP alarm is alwa s a HIGH alarm.. The 8860
can be set to warn ou if the conductivit approaches within a set
percentage of the USP limit.
The following settings and conditions are required for a USP
relay function:
1. In the CALIBRATE menu:
• RELAY MODE must be set to USP.
• RELAY SOURCE must be Chan 1 or Chan 2 Cond.
• SOURCE UNITS must be set to µS.
2. In the OPTIONS menu:
• The TC Mode of the USP channel must be set to None.
(Service tip: If a relay is constantly on, check these settings.)
Example:
• The USP setpoint is 40%.
• The water temperature is 19 ºC, so the USP limit is 1.0 µS.
• The rela will be activated when the conductivit value reaches
0.6 µS, or 40% below the 1.0 USP limit.
• If the water temperature drifts to more than 20ºC, the 8860 will
automaticall adjust the USP limit to 1.1.
• The rela will now be activated when the conductivit value
reaches 40% below 1.1 µS, or 0.66 µS.
Temp range USP limit (µS):
0 to < 5 ºC 0. 6
5 to < 10 ºC 0. 8
10 to < 15 ºC 0.9
15 to < 20 ºC 1
20 to < 25 ºC 1.1
25 to < 30 ºC 1.3
30 to < 35 ºC 1.4
35 to < 40 ºC 1.5
40 to < 45 ºC 1.7
50 to < 55 ºC 1.8
55 to < 60 ºC 2.1
60 to < 65 ºC 2.2
65 to < 70 ºC 2.4
70 to < 75 ºC 2.5
75 to < 80 ºC 2.7
80 to < 85 ºC 2.7
85 to < 90 ºC 2.7
90 to < 95 ºC 2.7
95 to < 100 ºC 2.9
100 to < 105 ºC 3.1
Read "From zero to less than 5ºC."
Relay 1 Mode:
LOW >
Relay 1 Source:
Chan 1 Cond >
Relay 1 Setpoint:
100.000 µS >
Relay 1 Hysteresis:
0.5 µS >
Relay 1 Delay:
00.0 seconds >
Relay 1 Rng: µS
100.000 1000.00
>
Relay 1 PlsRate:
120 pulses/min >
Repeat Settings for Relays 2, 3 and 4
Last Cal
06-30-00 >
The maximum PULSE rate is 400 pulses per minute.
Set a dela time up to 6400 seconds maximum. When
the source value reaches the SETPOINT, the RELAY will
not be activated until this time has elapsed.
If ou see "- - - -" in this setting, review the SOURCE and make sure it is consistent with
the setpoint value.
When the rela Mode is USP (defined as a HIGH alarm):
• The setpoint value is a percentage below the USP limit. •
H steresis is displa ed in µS.
NOTE: If the SOURCE value returns to within the SETPOINT value before this time has
elapsed, the RELAY will not be activated.
Rela will be deactivated at setpoint ± H steresis
(depending on High or Low selection).
If Rela mode is USP, then the SOURCE must be Cond 1 or Cond 2 and Temp Comp
(see OPTIONS menu) must be set to None
Select the INPUT SIGNAL (or FUNCTION) monitored b
this rela output: Cond 1, Cond 2, Temp 1, Temp 2,
Function
Select the desired mode of operation for this rela output:
OFF, LOW, HIGH, USP or PULSE.
Set the value where ou want this rela output to be
activated. The maximum value acceptable is 999999.
Use this "notepad" to record important dates, such as
annual recertification or scheduled maintenance.
Select the Mode and Setpoints for 4 output relays
If this output is set for PULSE mode, set the range for the
pulses to increase, from 0 to MAX RATE (see below.)
Set the maximum pulse rate for this output. The rela will
pulse at this rate when the SOURCE value is equal to the
maximum PULSE RANGE.

page 8 of 12 +GF+ SIGNET 8860 Dual Channel Conductivit /Resistivit Controller
This menu contains setup and displa features for minor displa or output adjustments.
Display
Contrast:
3 >
Temp Display:
°C >
Channel 2:
ON >
Power:
60 Hz >
Ch 1 TC Mode:
Pure Water >
Ch 1 TC Slope:
2.00 % >
Averaging:
Low >
Chan 1 Decimal
****.* >
For LINEAR or PURE WATER temperature compensation,
select a % per ºC slope. Maximum slope setting is 9.99
% per ºC. If our Temp Comp setting is NONE, this menu
item will not be displa ed.
These settings will repeat if Channel 2 is ON.
OFF provides the most instantaneous response to changes in the water. It is the preferred option in s stems where
the measurement is ver stable.
Select LOW or HIGH averaging if our process experiences frequent or extreme fluctuations in conductivit .
Set the decimal to the best resolution for our application.
The displa will automaticall scale up to this restriction.
Select *****., ****.*, ***.** **.*** or *.****
Select PURE WATER for applications where the water is
greater than than 5 MΩ (or less than 0.2 µS).
If TC Slope is zero, select NONE.
These settings will repeat if CHAN 2 is ON.
Options Menu
Description
Select our temperature scale: ºCelsius or ºFahrenheit
Select LINEAR for applications where the water is less
than 5 MΩ (or greater than 0.2 µS).
Turn CH 2 OFF if not in use. This will remove all menu
functions related to CH 2.
Select 50 Hz or 60 Hz electrical noise suppression,
according to the AC power used in our area.
Set the method for temperature compensation to NONE,
LINEAR or PURE WATER. You must select NONE for
USP s stems.
Adjust the LCD contrast for best viewing. A setting of 1 is
lower contrast, 5 is higher. In general, select lower
contrast if the displa is in warmer ambient surroundings.
Select the proper setting for all applications, whether AC
or DC powered.
Loop 1 Adjust:
4.00 mA >
Loop 1 Adjust:
20.00 mA >
Relay 3 Active:
High >
Relay 4 Active:
High >
Test Loop 1:
>
Test Relay 1
>
Adjust the minimum and maximum current output. The
displa value represents the precise current output.
Adjustment limits:
• 3.80 mA < 4.00 mA > 5.00 mA
• 19.00 mA < 20.00 mA > 21.00 ma
Use this setting to match the s stem output to an external
device.
Repeat for LOOP 2 and LOOP 3
Select active HIGH or active LOW operation for rela s 3
and 4.
Recommended: Use active LOW onl if rela s 3 and 4 are
set for OPEN COLLECTOR operation.
Active HIGH: No power applied to rela coil during normal
operation.
Power is applied to rela coil when process value reaches
the SETPOINT.
Active LOW reverses these conditions.
Press UP and DOWN ke s to manuall toggle the rela
output state.
Repeat for all output relays
Manuall enter an output current value from 3.6 mA to
21.00 mA to test the output loop. Hold UP or DOWN ke s
to scroll the output value.
Repeat for LOOP 2 and LOOP 3

page 9 of 12
+GF+ SIGNET 8860 Dual Channel Conductivit /Resistivit Controller
Calibration Procedure
The 8860 has been electronicall calibrated at the factor . The calibration accurac can be verified using procedure A, described below.
Procedure B describes the "wet" calibration, which can be used to provide a complete s stem calibration. The use of NIST traceable
solutions is required for this procedure.
A) Accuracy Verification with Precision Resistors (Electronic Calibration):
The use of precision resistors (±0.1%) connected to the rear "Temp In", "Signal IN", and "Iso Gnd" terminals in place of the sensor, can
be used to electronicall verif that the 8860 is accuratel calibrated.:
1) Select a standard cell constant based on desired range of operation.
2) Place a 1096 Ω (25°C) resistor between "Temp IN" and "Iso. Gnd" terminals.
Note: Temperature simulation errors can adversel effect calibration: 3.85 Ω = 1°C.
3) Calculate the required simulation resistor that represents a value within the selected cell range. The formula for determining the
required simulation resistance is:
Resistance = Cell: e.g. 0.1 Cell = 5,000 Ω or 5 KΩ
Desired conductivit (Siemens*) 0.000020 (Siemens*)
Conductivit = Sensor cell : e.g. 0.1 Cell = 0.000001 Siemens*
Simulation resistance (Ω) 100,000 (Ω) or 1µS/cm
(*Conversion: 1 µS = 1 X 10-6 Siemens or 0.000001 Siemens)
4) Place the calculated simulation resistance between the "Signal IN" and "Iso Gnd" terminals as shown.
5) Set temperature and set conductivit . (Optional: enter zero to reset factor calibration (zero must be re-entered if currentl displa ed
to reset factor calibration.)
B) Calibration with NIST Traceable Solutions (Wet Calibration):
When using NIST traceable standards, ensure the sensor and test solution are at the solution temperature specified on the test solution
label. Prevent contamination of the calibration solution.
1. Enter ACCESS CODE and scroll to "..SET Temperature" or "..Set Conductivit "
2 Press the RIGHT ARROW ke .
◊ All output functions related to this channel are held at their current value.
◊ You must press another ke within 10 minutes or the 8860 will return to the main CALIBRATE menu automaticall .
◊ After an additional10 minutes , the 8860 will exit the CALIBRATE menu and return to normal operation.
3. Remove the sensor from the s stem. Thoroughl rinse the sensor in a small amount of test solution (outside of the calibration
solution container)
4 Place the sensor into the test solution. Place a accurate thermometer into the same solution.
◊ Allow sufficient time for the temperature to stabilize.
5. Adjust the temperature value based on the external temperature measurement. (Follow the steps detailed on page 5, step 4.)
6. Press the UP and DOWN ke s simultaneousl to exit the CALIBRATE menu and return to normal operation.

page 10 of 12 +GF+ SIGNET 8860 Dual Channel Conductivit /Resistivit Controller
TDS Factor
Some industries need to displa a conductivit value as Total
Dissolved Solids (TDS), measured in units of parts per million
(PPM) or parts per billion (PPB).
♦1 PPM is equivalent to 1 mg per liter.
♦1 PPB is equivalent to 1 µg per liter.
♦The 8860 calculates PPM or PPB b dividing the µS value b a
TDS Factor that ou define. The 8860 will accept a TDS factor
from 0.01 to 99999.9 µS per PPM.
(factor preset = 2.00 µS per PPM).
♦TDS factors can var widel , ranging from 1.50 to 2.50 µS per
PPM. Methods for establishing a TDS factor are be ond the
scope of this manual.
NOTE: The TDS factor is always set in PPM.
TDS Factor = Conductivit (µS) ÷Total dissolved solids (PPM)
PPM = Solution conductivit (µS) ÷ TDS Factor
Example:
• Solution conductivit = 150 µS
• TDS = 80 PPM
• TDS Factor = 150 µS ÷ 80 PPM = 1.88 µS per PPM
Temperature Effects
Conductivit measurement is highl dependent on temperature.
The basic rule is that higher temperatures result in greater
conductance (less resistance).
Temperature effects are expressed as the percentage of
conductivit change (in µS) per °C. The conductivit value is
generall referenced to 25 ºC. The 8860 has three temperature
compensation options:
None
USP standards for pharmaceutical waters require that the
measurement be made without temperature compensation. USP
limits are are discussed on page 7.
Pure Water (Standard Compensation)
This selection is used for measurements of ver clean water, less
than 0.2 µS. Temperature effects are not linear in this range, so
the temperature coefficient is not easil determined. This selection
is recommended for all Resistivit applications measuring from 5
MΩ to 18MΩ. This selection conforms to ASTM standard D1125
and D5391.
Linear
This selection allows ou to calculate a custom temperature
compensation value for Conductivit measurements in the range
of 0.2 µS and greater (Resistivit applications measuring less than
5 MΩ). The procedure is outlined in the section on the right.
Calculating a Linear Temperature Coefficient
1. Set TC Mode to NONE (see OPTIONS menu, page 8).
2. Heat a sample solution close to the maximum process
temperature. Place sensor in the sample solution and allow
several minutes for stabilization. Record the 8860 temperature
and conductivit values in the spaces provided:
Displa ed temperature: T1 = _______ °C
Displa ed conductivit : C1 = _______ °C
3. Cool the sample solution close to the minimum process
temperature. Place sensor in the sample solution allowing
several minutes for stabilization. Record displa ed
temperature and conductivit values in the spaces provided:
Displa ed temperature: T2 = _______ °C
Displa ed conductivit : C2 = _______ °C
(A 10% change in conductivit between steps 2 and 3 is
recommended.)
4. Substitute recorded readings (steps 2 and 3) into the following
formula:
TC Slope = 100 x (C1 - C2)
(C2 x (T1 - 25)) - (C1 x (T2 - 25))
Example: A sample solution has a conductivit of 205 µS @ 48°C.
After cooling the solution, the conductivit was measured at 150
µS @ 23 °C. (C1 = 205, T1 = 48, C2 = 150, T2 = 23)
The TC is calculated as follows:
TC Slope = 100 x (205 - 150) = 5500 = 1.42%/°C
(150 x (48 - 25)) - (205 x (23 - 25)) 3860

page 11 of 12
+GF+ SIGNET 8860 Dual Channel Conductivit /Resistivit Controller
Display
"- - - -"
"Value Must be 100
or less"
"Value must be
more than 0"
"Value must be
400 or less"
"Reset to Factor
Calibration"
"Too Much Error
CHECK SENSOR"
Explanation
Displa is over range. This ma be a normal
condition if our process operates at/near the
limits of the sensor range.
The menu item being set is a percentage value
and must be less than 100.
The menu item being set cannot be zero or a
negative value.
The Pulse Rate for Rela and Open Collector
outputs cannot be greater than 400 pulses per
minute.
A value of "0" is being set into
".. Set: Conductivit " menu item.
The calibration offset entered is be ond the
allowable tolerances of the instrument.
Action
Check sensor for correct range.
Check Decimal setting in OPTIONS menu.
Check Calibrate menu settings for incompatible
SOURCE and RANGE values.
Select a value from 0 to 100.
Select a value greater than zero.
Select a pulse rate less than 400
This will remove an user calibration from the
"..Set Conductivit " and "..Set Temperature"
items in the Calibrate menu.
Check calibration procedure for accurac .
Check sensor for proper operation.
Check an cable extensions for poor splices or
termination.
Troubleshooting and display messages

page 12 of 12 +GF+ SIGNET 8860 Dual Channel Conductivit /Resistivit Controller
+GF+ SIGNET
Signet Scientific Company, 3401 Aerojet Avenue, El Monte, CA 91731-2882 U.S.A. • Tel. [phone] • Fax [phone]
For Worldwide Sales and Service, visit our website: www.gfsignet.com • Or call (in the U.S.): [phone]
GEORGE FISCHER +GF+ Piping Systems
3-8860.090/(A-7/00) English © Scientific Compan 2000 Printed in U.S.A.
Surface Mount Bracket
Part Number Description Code
7300-7524 7.5W 24V Power Suppl 159000687
7300-1524 15W 24V Power Suppl 159000688
7300-3024 30W 24V Power Suppl 159000689
7300-5024 50W 24V Power Suppl 159000690
7300-1024 100W 24V Power Suppl 159000691
3-8050.395 NEMA 4X Rear Cover 159000186
3-9000.392 Liquid Tight Connector Kit 159000368
3-8050.392 Model 200 Retrofit Adapter 159000640
3-5000.399 5x5 in. Adapter Plate 198840224
3-0000.596 Heav Dut Wall Mount 159000641
3-5000.598 Surface Mount Bracket 198840225
3-8050.396 RC Filter Kit (for rela use) 159000617
3-2830 Conductivit Certification Tool 159000628
Accessories
5x5 inch
Adapter Plate 200 Retrofit Adapter Heav Dut Wall Mount
Bracket
Liquid Tight Connector Kit
gasket
Rear Cover
4-screws
RELAY 1
RELAY 2
RELAY 3RELAY 4
N/CN
/O COMN/CN/O COMN/CN/OCOMN/CN/OCOM
RELAY3,4
OPEN
COLL3,4
- OPEN COLL 4
+
OPEN COLL 4
-
OPEN COLL 3
+
OPEN COLL 3
-
LOOP2
+
LOOP2
-
LOOP3
+
LOOP3
-
LOOP1
+
LOOP1
SHLD
ISOGND
TEMP1
SGNL1
SHLD
ISOGND
TEMP2
SGNL2
POWER
OUTPUTOPTION
Æ
L
N
-
+
cable
Liquid Tight
Connector
(ordered
separatel )
NEMA 4X/IP65 Rear Cover Kit