Resistivity measurements within the 10 MΩ to 18 MΩ range
•
must be performed in solution temperatures from 20°C to
100°C.
• Use three conductor shielded cable for cable extensions up to
30 m (100 ft) max.
• Cable shield MUST be maintained through cable splice.
10.0
0.01
0.1
1.0
+
Gnd
PLS
Iso. Gnd
Sen. Pwr.
output
12-24 V
10 W
+
-
2
1
Gnd
+
Total
AUX
reset
output
Silver (Shld)
Black
White
Red
Temp. IN
Signal IN
Flow
Patent No. D376,328
Iso. Gnd
5800CR
Terminals
+
-
Shld
4-20
mA
3. 4-20 mA Current Output Connections
Fuse**
1/8A
+
4 - 20 mA*
*
-
+
-
4-20
mA
Signet 5800CR Conductivity/Resistivity Monitor
5800CR
Conductivity
Terminals
To isolate output and prevent ground loop problems:
1. Use monitor device with isolated inputs, or
2. Use separate DC supply for 5800CR and monitor device, or
3. Power 5800CR with 12 - 24 VAC step down transformer
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.
1
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, as shown. Relay operation modes
include Low alarm, High alarm, and Proportional Pulse (sec. 5).
Common device connections include:
• Pulse mode - metering pump control
• Pulse mode - solenoid valve control
• Low or High mode - warning lamps
• Low or High mode - bells or sirens
• Low or High mode - external heavy-duty relay
5800CR
Terminals
NO
C
NC
+
External AC/DC
Relay 1Relay 2
NO
power
Relay
De-energized
C
NO
NC
C
NC
Device
+
A
-
Relay
Energized
C
NO
NC
-
-
Device
B
+
Wiring Example Right
Device A IS powered when relay 2 is de-energized (front panel
LED "off"). Power is discontinued when the relay 2 setpoint is
reached (front panel LED "on"). Device B IS NOT powered when
the relay 2 is de-energized. Power is applied after the relay 2
setpoint is reached.
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. Relay Operation
A. LOW alarm mode
The relay is energized when the solution conductivity (mS) drops
below the setpoint, and is de-energized when the solution conductivity
rises above the setpoint plus hysteresis
(sec. 6.2F, 6.2G).
B. HIGH alarm mode
The relay is energized when the solution conductivity (mS) rises above
the setpoint and is de-engergized when the solution conductivity
falls below the setpoint plus hysteresis
(sec. 6.2F, 6.2G).
S
Low setpoint=
Adjustable hysteresis=
Relay energized=
Relay de-energized=
C. Proportional PULSE mode
The proportional pulse relay configuration is primarily designed for metering pump control. The operator is prompted to enter a minimum and
maximum conductivity setpoint and maximum pulse rate for the assigned relay (sec. 6.2H, 6.2I). Relay pulse width is fixed at 130 ms. Refer to the
operation examples below.
• Metering pump chemical addition (dry contact activation type required)
High setpoint=
Adjustable hysteresis=
Relay energized=
Relay de-energized=
S
300 pulses
Example 1 (right):
As the process conductivity (S) rises above the minimum pulse setpoint (10 S) the
relay begins pulsing; triggering the metering pump for deionized water addition.
As the process conductivity continues to rise, pulsing accelerates proportionally until
the maximum programmed pulse rate of 300 pulses/minute and setpoint (90 S)
are reached, forcing the process conductivity back down to intended
levels (e.g. 10 S).
Example 2 (right):
As the process conductivity falls below the minimum pulse setpoint (90 S) the relay
begins pulsing; triggering the metering pump for chemical addition. As the process
conductivity continues to decrease, pulsing accelerates proportionally until the
maximum programmed pulse rate of 300 pulses/minute and setpoint (10 S) are
reached, forcing the process conductivity back up to intended levels (e.g. 90 S).
S
300 pulses
10
mS
2Signet 5800CR Conductivity/Resistivity Monitor
0 pulses
300 Pulses/min >
Relay 1 or
Relay 2
Relay 1 Rate:
10
mS
Relay 1 Rate:
mS
300 Pulses/min >
Relay 1 or
Relay 2
0 pulses
90
90
mS
S
ENTER
6. Menu Functions
To access either CALIBRATE or OPTIONS menus, press and hold
the ENTER key as illustrated below:
Press &
hold for
ENTER
access:
Menus:
• VIEW menu (sec. 6.1): The VIEW menu is displayed during
standard operation. The operator can navigate freely through
the menu by pressing either UP or DOWN arrow keys.
• CALIBRATE Menu (sec. 6.2): The CALIBRATE menu contains
all critical display setup and output parameters. A simple security code feature prevents unauthorized tampering. The operator is required to enter a simple access code for menu access.
The same code also unlocks OPTIONS menus.
• OPTIONS Menu (sec. 6.4): The OPTIONS menu contains
setup and display features that are seldom accessed for minor
display or output adjustments.
VIEW
CALIBRATE
6.1 VIEW Menu
1
Choose:
↓F
A.
Cond./temp.
B.
Loop output
C.
Range
D.
Relay 1
E.
Relay 2
F.
Last calibration
OPTIONS
↑A
2s5s
2
Change:
• Reversible Dials
The 5800CR includes
a dial kit with 6
reversible dial faces
and units decals (factory installed dial: 0
- 100). See dial kit for
additional information.
3
Save:
0-2/0-4,
0-6/0-8,
0-10/0-100
BA
S/cm
E
AL
AR
M
1
S/cm
AL
AR
M
2
0
D
10
C
AL
AR
M
1
AL
AR
M 2
0
100
Menu Displays A - F:
(Factory default displays shown in menu
column 1)
A. Active display of conductivity, resistivity, or
PPM (TDS) and Temperature in degrees
Celsius (°C) or Fahrenheit (°F).
B. Loop output display: shows the loop cur-
rent output level.
C. Range display: shows the programmed
min and max meter dial range (sec. 6.2D).
D. Relay 1 display: shows the programmed
operation mode and setpoint for relay 1
(sec. 6.2F).
E. Relay 2 display: shows the programmed
operation mode and setpoint for relay 2
(sec. 6.2F).
F. Last calibration: shows a user defi ned
setup date for maintenance records. This
feature is not an internal timer or calender.
Signet 5800CR Conductivity/Resistivity Monitor
3
6.2 CALIBRATE Menu
Requirements
System calibration (Step E, WET CAL) is required for fi rst-time system setup or periodic sensor verifi cation. System calibration can be performed with with a solution of know conductivity and an accurate thermometer, or with fi xed resistors. Refer to the WET CAL procedure
(sec. 6.3) for calibration details.
Press keys in sequence
will appear during code entry.
1
Choose:
↓J
A.
Sensor
B.
Units
Shown only with PPM units selected above
C.
PPM Factor
D.
Range
E.
Wet CalibrationSystem calibration
F.
Relay
G.
Relay
Measured units
Factory default: 2.00
Meter Min→Max
Relay Low or High Mode Selected
Hysteresis
Cell
type
Mode Setpoint
to continue,
2
Change:
Cell
value
Press <ENTER> key to access
WET CAL procedure (sec. 6.3);
"Please Wait" briefly displays
3
Save:
ENTER
"SAVING"
briefly
displays
Menu Settings A - J:
(Factory default displays shown in menu
column 1)
A. Selects cell type and cell value:
• Standard cells: 0.01, 0.1, 1.0, 10.0,
or 20.0
• Custom (certifi ed) cells: 00.0000 -
999999.
See section 2 for recommended cell con-
stant and operation range
B. Selects displayed conductivity units;
Solution temperatures limited from
20°C to 100°C for measurements from 10
MΩ to 18 MΩ.
C. Sets PPM factor when PPM display units
are selected (step B), 0.01 - 9.99. Refer
to section 7 for feature explanation.
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
E. Selects WET CAL procedure for fi rst time
system setup or periodic system recalibration (sec. 6.3).
Menu items F - I repeat for relay 2 setup.
F. Sets relay operation mode Low or High,
and setpoint, 00.0000 - 999999. units
(sec. 5).
H.
I.
J.
Last calibration
To return to
Relay
Relay
Relay Pulse Mode Selected, Step F
Mode Range
Pulse rate
Optional
↑A
To restore original value:
G. Sets relay hysteresis, 00.0000 - 999999.
units (sec. 5). Set to zero to disable
feature
H. Sets relay minimum and maximum pulse
setpoint, 00.0000 - 999999. units (sec 5).
I. Sets relay pulse rate, 000 - 300 pulses/
minute (sec. 5).
J. Sets user defi ned setup date for
maintenance records. This feature is not
an internal timer or calender
VIEW:
quick
press
4Signet 5800CR Conductivity/Resistivity Monitor
quick
press
Loading...
+ 8 hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.