Mostec M3020R User manual

Operating Manual
pH/mV-Controller
Type M3020R

V1.50 © 2015 MOSTEC AG, CH- 10 Liestal 2
M3020R Operating Manual
Warranty
Mostec warrants this product to be free of manufacturing defects for a 2-year period after
the original date of purchase. Within this period, defective products will be repaired free
of charge provided that the defect occurred during normal operation. This warranty does
not cover damage to the product resulting from ordinary usage such as front panel
scratches, broken control elements and corrosion, etc. The customer is responsible for
shipping and packing charges for products returned under warranty to Mostec. Mostec
warrants this product beyond the 2-year warranty period for an additional 2 years in case
of long term damages due to improper manufacturing. Such damages as poorly soldered
joints or other assembly problems are also covered by the warranty. Transportation
damages are not covered by the warranty and should be referred to the respective
delivery service.

V1.50 © 2015 MOSTEC AG, CH- 10 Liestal 3
M3020R Operating Manual
Index: Page
A. Front Elements And Keyboard..................................................................................................
B. Setup Menu...............................................................................................................................5
C. Customer Menu........................................................................................................................6
Measurement settings...........................................................................................................6
Controller settings..................................................................................................................6
Relay 3+4 settings.................................................................................................................6
Alarm settings........................................................................................................................6
USB settings..........................................................................................................................6
Device settings......................................................................................................................6
D. Measurement settings ..............................................................................................................7
Calibrate sensor.....................................................................................................................7
Sensor ty e............................................................................................................................7
Measure mode.......................................................................................................................7
In ut range.............................................................................................................................7
Out ut range..........................................................................................................................7
Tem erature mode.................................................................................................................7
Digital filter.............................................................................................................................7
E. Controller Settings.....................................................................................................................8
F. Relay Settings............................................................................................................................9
G. Alarm Settings.........................................................................................................................10
H. USB settings............................................................................................................................11
Clock setu ..........................................................................................................................11
Date setu ............................................................................................................................11
USB log eriod.....................................................................................................................11
Remove thumb drive............................................................................................................11
USB characteristics..............................................................................................................11
I. Device settings.........................................................................................................................12
Keyboard lock/unlock..........................................................................................................12
Language setting.................................................................................................................12
Custom label........................................................................................................................12
Factory setting.....................................................................................................................12
Device info...........................................................................................................................12
J. Calibrate The pH Sensor.........................................................................................................13
K. Operating Mode Of The Limits................................................................................................1
L. Typical Application...................................................................................................................1
M. Controller with two different set points [W] ............................................................................15
N. Controller with two identical set points, inactive zone = 10% p-band [W] .............................15
O. Controller mode – Adapting the controller to a titration curve ...............................................16
P. Factory settings ......................................................................................................................17
Q. Mechanical Dimensions..........................................................................................................18
Side view:............................................................................................................................18
Rear view:............................................................................................................................19
R. Technical Data........................................................................................................................20

V1.50 © 2015 MOSTEC AG, CH- 10 Liestal
M3020R Operating Manual
A. Front Elements And Keyboard
This listing only refers to the main screen, which shows up 3 seconds after power on.
Nr. element function page
a. LED1 error for Pt 100, limit contacts, 1Wire, USB and 
b. LED2 no function
c. LED3 limit contact 1..........................................................6,8,1
d. LED limit contact 2..........................................................6,8,1
F1 / F2 no function on home screen
F3 access to calibration menu pH7 and mV/pH............6,13
F relay operation manual/auto......................................1
ENT setup menu, enter.......................................................5
ESC main menu, exit...........................................................6
+ increase values......................................................5 to 1
- decrease values.....................................................5 to 1
a
b
c
d

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M3020R Operating Manual
B. Setup Menu
Basically, all settings can be made in the user friendly customer menu. To change certain
parameters during the process, you can change them in the home screen using the key E T. If
an alarm message is displayed on the main screen, it first has to be acknowledged to enable
further parameter change. Adjusting the limit contact for the alarm relay in the setup menu is
only possible if in the "Alarm SP1 enable" is set in the user menu. Same for "Alarm SP2
enable."
The setup menu may be quitt by pressing the (ESC)-key, or, waiting a few seconds with no key
operation. Values can be altered with the (+) and (-)-key, or, depending on the menu, with the
(F3)-key as well.
access to the
menu item
menu item change values
press E T 1x Xt on 1 0.00...20.00s
press E T 2x Xt off 1 0.00...20.00s
press E T 3x Xp 1 pband 0.01...7.00pH or 1...1000mV
press E T x W1 set point 0.01...1 .00pH or -1000...1000mV
press E T 5x Xt on 2 0.00...20.00s
press E T 6x Xt off 2 0.00...20.00s
press E T 7x Xp 2 pband 0.01...7.00pH or 1...1000mV
press E T 8x W2 set point 0.01...1 .00pH or -1000...1000mV
press E T 9x set temperature to manual/Pt-100 F3 sets from Pt100 to manual, keys
+ and – sets the temperature to
+/- 0.1°C.
press E T 10x USB on/off Turn on and eject the USB data
logger.
press E T 11x Alarm 1 0.00...1 .00pH or -1000...1000mV
press E T 12x Alarm 2 0.00...1 .00pH or -1000...1000mV

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M3020R Operating Manual
C. Customer Menu
Access to menu: press and hold E T for 3 seconds
Navigation in the menu: keys + and -
Access to a menu item: key E T = ENTER
Exit a menu item: key ESC = ESCAPE
Adjust values: keys + and -
menu item sub menu item function/comment
1/6
Measurement settings
Calibrate sensor
Sensor type
Measure mode
Input range
Output range
Temperature mode
Digital filter
See section D
2/6
Controller settings
Rel1/2: Xt on
Rel1/2: Xt aus
Rel1/2: X pband
Rel1/2: W set point
Rel1/2: acid/base
Rel1/2: norm/inv
Rel1/2: LED norm/inv
Rel1/2: min. valve time
Rel 1-2: label
See section E
3/6
Relay 3+4 settings
Rel 3/ : behavior
Rel 3/ : set point
Rel 3/ : norm/inv?
Rel 3/ : LED norm/inv?
Rel 3/ : turn on delay
Rel 3/ : turn off delay
Rel 3- : hysteresis
Rel 3- : reference
See section F
/6
Alarm settings
Alarm SP1/2: on/off?
Alarm SP1/2: value
Alarm SP1/2: behavior
Alarm SP1/2:delay
Alarm Rel: norm/inv?
SP1-SP2: hysteresis
Pump monitoring
See section G
5/6
USB settings
Time setup
Date setup
Data log period
Remove thumb drive
See section H
6/6
Device settings
Keyboard lock/unlock
Language settings
Custom label
Factory setting
Device info
See section I

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M3020R Operating Manual
D. Measurement settings
1) Press and hold ESC 3 seconds to enter the customer menu.
2) Go to menu item 1/6, ''Measurement settings'' with +.
3) Open menu item with E T
) Menu structure:
menu item change values function/comment
1/7
Calibrate sensor
See section J
2/7
Sensor type
Switch with + and - between
the three sensors and confirm
the selection with E T
Standard sensor types are
pH-sensor direct and ISM 1-
Wire sensor
2-Wire ...20mA input is
optional hardware
pH sensor direct:
via pH plug
4…20mA input:
mA equal -1000mV
20mA equal 1000mV
ISM 1-Wire Sensor digital input
Supported ISM InPro Sensor-
types:
- InPro 3250i
- InPro 3253i
- InPro 260i
- InPro 800i
- ...
3/7
Measure mode
Select with + between pH and
mV, confirm it with E T
The actual value, pH or mV, will
be displayed on the main screen
/7
Input range
Change with + and - between
input range 0.00...1 .00pH or
-1000...1000mV , skip to next
parameter or confirm the
selection with E T
Set the input range which
corresponds to the selected signal
current output
5/7
Output range
Change with + and - between
output range 0.00...20.00mA ,
skip to next parameter or
confirm the selection with
E T
Sets the signal current output
range, which corresponds to the
input range
6/7
Temperature mode
Switch with F3 between Hand
and PT100 mode
If Hand mode is selected
change with + and – between
0.0...120.0°C, confirm the
selection with E T
Sets measure mode for
temperature compensation
7/7
Digital filter
Change with + and – between
0...100 digit
1 digit = 1mV or 0.01pH,
confirm the selection with
E T
Sets stabilization for measured
value

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M3020R Operating Manual
E. Controller Settings
1) Press and hold ESC 3 seconds to enter the customer menu.
2) Go to menu item 2/6, ''Controller settings'' with +.
3) Open menu item with E T
) Menu structure:
Menu Item Change Values
1/17
Relay 1: "Xt" on
Turned on time relay 1 (mid of P-band)
Change values with + and – to change in
+/- 0.01s steps, confirm the selection with E T.
2/17
Relay 1: "Xt" off
Turned off time relay 1 (mid of P-band)
Change values with + and – to change in
+/- 0.01s steps, confirm the selection with E T.
3/17
Relay 1: "Xp"-band
P-band relay 1
Change the value with + and - , resolution is +/-
0.01pH.
/17
Relay 1: "W", set point
Set point relay 1
Change the value with + and - , resolution is +/-
0.01pH.
5/17
Relay 1: Acid/base
Acid or base type relay 1
Change the value with + to control upward (Base) or
to control downward (Acid), confirm the selection
with E T.
6/17
Relay 1: normal/inverted
Switch with + between normally open or normally
closed contact, confirm the selection with E T.
7/17
Relay 1: LED normal/inverted
Switch with + between normal or inverted indication,
confirm the selection with E T.
8/17
Relay 1: min. valve time
Minimal turned on time relay 1 (for slow valve)
Change values with + and – to change in
+/- 0.01s steps, confirm the selection with E T.
Should be 0.00s
9/17
Relay 2: "Xt" on
Turned on time relay 1 (mid of P-band)
Change values with + and – to change in
+/- 0.01s steps, confirm the selection with E T.
10/17
Relay 2: "Xt" off
Turned off time relay 1 (mid of P-band)
Change values with + and – to change in
+/- 0.01s steps, confirm the selection with E T.
11/17
Relay 2: "Xp"-band
P-Band relay 2
Change the value with + and - , resolution is +/-
0.01pH.
12/17
Relay 3: "W", set point
Set point relay 2
Change the value with + and - , resolution is +/-
0.01pH.
13/17
Rel 2: Acid/base
Acid or base type relay 2
Change the value with + to control upward (Base) or
to control downward (Acid), confirm the selection
with E T.
1 /17
Relay 2: normal/inverted
Switch with + between normally open or normally
closed contact, confirm the selection with E T.
15/17
Relay 2: LED normal/inverted
Switch with + between normal or inverted indication,
confirm the selection with E T.
16/17
Relay 2: min. valve time
Minimal turned on time relay 2 (for slow valve)
Change values with + and – to change in
+/- 0.01s steps, confirm the selection with E T.
Should be 0.00s
17/17
Relay 1-2 label
Shows a custom label for the relay 1 and 2
Change characters with + and -, switch position with
F3 and F4, confirm label with E T.

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M3020R Operating Manual
F. Relay 3+4 Settings (optional relays)
1) Press and hold ESC 3 seconds to enter the customer menu.
2) Go to menu item 3/6, ''Relay 3+ settings'' with +.
3) Open menu item with E T
) Menu structure:
menu item change values
1/1 Relay 3 behavior Switch with + between upper and lower
limit, confirm the selection with E T
2/1 Relay 3 set point Change values with + and - ,
Resolution is +/- 1mV or 0.01pH
3/1 Relay 3 norm/inv? Switch with + between normal and
inverted operation, confirm the
selection with E T
/1 Relay 3 LED norm/inv? Switch with + between normal and
inverse operation, confirm the
selection with E T
5/1 Relay 3 turn on delay Change the time delay with + and -,
resolution is +/-1s
6/1 Relay 3 turn off delay Change the time delay with + and -,
resolution is +/-1s
7/1 Relay 4 behavior Switch with + between upper and lower
limit, confirm the selection with E T
8/1 Relay 4 set point Change the value with + and - , re-
solution is +/-1mV or 0.01pH
9/1 Relay 4 norm/inv? Switch with + between normally open
or normally closed contact, confirm the
selection with E T
10/1 Relay 4 LED norm/inv? Switch with + between normally open
or normally closed contact, confirm the
selection with E T
11/1 Relay 4 turn on delay Change the time delay with + and –,
resolution is +/-1s
12/1 Relay 4 turn off delay Change the time delay with + and –,
resolution is +/-1s
13/1 Relay 3-4 hysteresis Change the hysteresis of both set
points with + and –, resolution in range
from 5 to 200 is +/- 1mV or 0.01pH
1 /1 Relay 3-4 reference Switch with + between PT100 and
pH/mV as reference for relay 3+ ,
confirm the selection with E T

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M3020R Operating Manual
G. Alarm Settings
1) Press and hold ESC 3 seconds to enter the customer menu.
2) Go to menu item /6 "Alarm settings" with +.
3) Open menu item with E T
) Menu structure
menu item change values
1/11 Alarm SP1 enable Switch with + between enable and disable,
confirm the selection with E T
2/11 Alarm SP1 value Change the value with + and - , the resolu-
tion is +/-1mV
3/11 Alarm SP1 behavior Switch with + between functions "lower limit"
and "upper limit", confirm the selection with
E T
upper limit Alarm relay is activated
when the measured value is
greater than the nominal
value
lower limit Alarm relay is activated
when the measured value is
smaller than the nominal
value
/11 Alarm SP1 delay Change the time delay with + and - , reso-
lution is +/-1s
5/11 Alarm SP2 enable Switch with + between enable and disable,
confirm the selection with E T
6/11 Alarm SP2 value Change the value with + and - , resolution is
+/-1mV
7/11 Alarm SP1 behavior Switch with + between functions "lower limit"
and "upper limit", confirm the selection with
E T
upper limit Alarm relay is activated
when the measured value is
greater than the nominal
value
lower limit Alarm relay is activated
when the measured value is
smaller than the nominal
value
8/11 Alarm SP2 delay Change the time delay with + and - , reso-
lution is +/-1s
9/11 Alarm Rel norm/inv? Switch with + between normal and inverse
operation, confirm the selection with E T
10/11 SP1-SP2 hysteresis Change the hysteresis of both set points
with + and –, resolution in range from 5 to
200 is +/- 1mV or 0.01pH.
11/11 Pump monitoring Change the value with + and - , to set the
maximum pump run time to alarm (from 0s
to 10800s, whereat 0s means “off”)
Note:
An alarm message can be acknowledged by pressing E T on main screen.

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M3020R Operating Manual
H. USB settings
1) Press and hold ESC 3 seconds to enter the customer menu.
2) Go to menu item 5/6 "USB settings" with +.
3) Open menu item with E T
) Menu structure:
menu item change values function/comment
1/
Clock setup
Set with + between 12h and 2 h
format, confirm it with E T
Set time format and time for data log
mode
2/
Date setup
Set with + between DDMMYY
and MMDDYY format, confirm it
with E T
Set datum format and date for data
log mode
3/
USB log period
Set recording time interval from1
to 7200sec with + and -.
Resolution: 1sec
/
Remove thumb drive
Switch with F3 between
stop/start log
Finish the current log cycle before
removing the thumb drive.
When display shows ''USB:wait for
log'' the thumb drive is ready for
removing
USB characteristics
•Device accept only empty and FAT32 formatted thumb drives.
•Date and Clock settings keep stored within 3 hours without current supply.
•Device starts automatically with logging data when a thumb drive was found.
•: Device is concerned with the thumb drive. It takes up to 5 minutes. Do not remove the drive in
this case.
•The data are stored in CSV format every 15 minutes. The file name characteristics:
''JJMMDDXX.csv''
JJ = last 2 digit of current year
MM = current month
DD = current day
XX = file counter 0-99
•The Data will appear in a spreadsheet program as the follwing.
Date Time mV T[1/10°C] pH[1/100 pH]
0 .05.2011 12:12:55 17 199 00
0 .05.2011 12:13:03 17 200 00
0 .05.2011 12:13:0 17 200 00
0 .05.2011 12:13:06 17 200 00
0 .05.2011 12:13:07 17 199 399
A. USB error code
E: xx error description
01 drive not formatted
02 drive wrong formatted
03 drive is write protected
0 sector size not supported

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M3020R Operating Manual
I. Device settings
1) Press and hold ESC 3 seconds to enter the customer menu.
2) Go to menu item 6/6 "Device settings" with +.
3) Open menu item with E T
) Menu structure:
menu item change values function/comment
1/5
Keyboard lock/unlock
Set a code with + and –
between 1 and 999 to lock or
unlock the device, confirm the
code with E T
If the keyboard is locked, you
won't be able to make changes in
the settings, until you have
unlocked it with the valid code.
The only exception is the
calibrating of the probe which
works without any code.
ote:
Please contact us if you have
forgotten the code.
2/5
Language setting
Set the required language
with + and -
3/5
Custom label
Change characters with +
and -, switch position with F3
and F4, confirm label with
E T.
Shows a custom label on main
screen. At most 16 characters are
possible.
/5
Factory setting
Sets all values to default,
confirm with E T or leave
with ESC
5/5
Device info
Exit with E T Shows firmware version, serial
number and calibrated point.

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M3020R Operating Manual
J. Calibrate The pH Sensor
Access to the calibrating screen is possible via main screen or via customer menu. For entering via main
screen press F3, for entering via customer menu press E T.
"ISM InPro" probes from Mettler-Toledo can't be calibrated, the function isn't activated yet.
display navigation / change values comment
Customer menu:
1/6 Measurement settings
1/7 Calibrate Sensor
Alternative:
main screen
Press E T
Press E T
Press F3
Calibrating screen will be
displayed.
Calibration pH7
Buffer solution
''7.00pH''
Set the pH value with + and - to the
value of the buffer; it is usually in
the range of 7.00pH ± 0.50pH.
Insert the probe into the buffer and
press E T
The controller will calibrate
the pH value as soon as the
pH-electrode is in the correct
range and the measured
value is stable.
ote:
The pH-electrode can't be
calibrated if the offset of the
probe is greater than +/-
0.6pH off the buffer value,
because the pH-electrode is
considered defective.
Buffer temperature
''25.0°C''
and actual measured pH
value
Set the temperature of buffer with
+ and - , wait for stable displayed
pH value then press E T to
calibrate the sensor
Calibration mV/pH
Buffer solution
'' .00pH''
Set the pH value with + and - to the
value of the buffer; it is usually in
the range of .00pH to 9.00pH.
Insert the probe into the buffer and
press E T
The controller will calibrate
the pH value as soon as the
pH-electrode is in the correct
range and the measured
value is stable.
ote:
The pH-electrode can't be
calibrated if the offset of the
probe is greater than +/-
0.6pH off the buffer value,
because the pH-electrode is
considered defective.
Buffer temperature
''25.0°C''
and actual measured pH
value
Set the temperature of buffer with
+ and - , wait for stable displayed
pH value then press E T to
calibrate the sensor
Save data?
''pH7 = 2.3mV”
''mV/pH = 57.5mV (20°C)''
Press E T to save the calibrated
values or discard the values with
ESC

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M3020R Operating Manual
K. Operating Mode Of The Limits
Mode switching is possible only on the main screen.
Automatic Control
Press the auto/manual key F4 to point the arrow to auto.
In this position, the device controls the outputs according to limit settings.
If an output turns on, the corresponding lamp is on, LED 3 or .
Manual Control
Press the auto/manual key F4 to point the arrow to the manual symbol.
 In this position, you may switch the outputs manually with the keys + for output 1 and for
output 2.
If an output turns on, the corresponding lamp is on, LED 3 or .
Option output 3 and are controlled with keys F1 and F2.
L. Typical Application
P t-1 0 0
Host
co m p u te r A la rm
USB-Stick,
Analogue instrument
or process computer
SPS, PLS
pH-1 / b ase ta n k
p H-0 / a cid ta n k
Va lve do wn
Valve u p
Controller M3020
Typical application of
the M3020 controller
Proce ss vesse l
with stirrer
In le t
O u tle t
P ro ce ss-
liq u id
Batch-type
operation
2 0 ...2 5 3 V

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M3020R Operating Manual
M. Controller with two different set points [W]
Between set point 1(W1) and set point 2 (W1) the controller is inactive. Within the P-band (Xp1 or
Xp2), the controller handles the valves (acid or base) by its internal control mechanism. With
these settings, the inactive zone can be determined individually.
Caution! W1 must be larger than W2 unless controller direction are changed at menu item
''controller settings'' .
. Controller with two identical set points, inactive zone = 10% p-band [W]
In mode set point 1 (W1)= set point 2 (W2) the dead band is 10% of p-band. p-band 1
controls the acid valve and p-band 2 the base valve. Within the p-band (Xp1 or Xp2), the
controller handles the valves (acid or base) by its internal control mechanism.
[pH]
[t]
[pH]
[t]
Totband 10% der P-Bandbreite ≈

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M3020R Operating Manual
O. Controller mode – Adapting the controller to a titration curve
If fast acting electric valves are used for a given process, it is preferable to keep the valve
switching times or the time ratio between t-on and t-off as low as possible. If hydraulic or
pneumatic valves are required, the periods have to be increased because of the relatively large
opening and closing times of these valves.
The added or delivered reagent quantities must have a certain ratio to the volume of the
process vessel to make sure that the reaction does not last too long and to avoid too much
reagent being added, because it would cause the control system to oscillate.
In case of relatively flat titration curves in which the pH value is roughly proportional to the
reagent added t-on should be set to equal t-off. However, if the titration curve is steep at the
end-point, t-on must always be shorter than t-off. In extreme cases, t-on = 1 sec and t-off =
20 sec must be selected. Optimum time conditions are to be determined empirically. During the
first run, t-on is kept very small as compared to t-off. If the neutralization lasts relatively long, t-
on must be, increased until there is no "overshoot" of the control process (opening of the other
valve when the set point value is exceeded).
By changing the p-band together with t-on and t-off, the controller can be adapted to any
desired titration without causing the system to oscillate.
0 pH 1 2 3 56 7 8 9 10 11 12 13 1
width of P-band
setpoint
setpoint = pH
P-band = pH
T = 2sec., T = 15sec.
pH-value of process liquid
before titration = pH 11
ein a us
the average of
T-on and T-off represents
a non-linear function of
the system, =.average
reagent flow rate
titration curve
time
time rquired to adjust the
process liquid to pH
mid point of P-band
(pH + pH 2 = pH 6 )
dead band 10%
of P-band
≈
end of control
process 2sec. T-on, 15sec. T-off
(in middle of the P-band)
acid-
valve
on
off
Example 2
start
Setpoint 1&2 = pH 7
0 pH 1 2 3 56 7 8 9 10 11 12 13 1
width of P-band
setpoint
start
setpoint = pH 7
P-band = pH 3
T-on = 5sec., T-off = 5sec.
pH value of process liquid
before titration = pH 2
the average value
of T-on und T-off re-
presents a linear
function of the system
= average reagent
flow rate
titration curve
time
time required to adjust the
process liquid to pH 7 mid-point of P-band
(pH 7 - pH 1.5 = pH 5,5 )
dead band 10% of P-band ≈
end of control process
5sec. T-on, 5sec. T-off
( )in middle of the P-band
base-
valve
on
off
Example 1
Set point 1&2 = pH 7

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M3020R Operating Manual
P. Factory settings
Measuring settings:
Sensor type: Analog (pH plug)
Measure mode: pH
Input range: Min: 0.00pH
Max: 1 .00pH
Output range: Min: 0.00mA
Max: 20.00mA
Manual temperature: 25°C
Digital filter: 10
Controller settings:
Rel 1: Xt on 1.00s
Rel 1: Xt off 3.00s
Rel 1: Xpband 2.00pH
Rel 1: W setpoint 8.00pH
Rel 1: acid / base downword (acid)
Rel 1: norm / inv normal
Rel 1: LED norm / inv normal
Rel 1: min. valve time 0.00s
Rel 2: Xt on 1.00s
Rel 2: Xt off 3.00s
Rel 2: Xpband 2.00pH
Rel 2: W set point 6.00pH
Rel 2: acid / base upword (base)
Rel 2: norm/ inv normal
Rel 2: LED norm / inv normal
Rel 2: min. valve time 0.00s
Alarm settings:
Alarm SP1: on / off off
Alarm SP1: value 9.00pH
Alarm SP1: behavior upper limit
Alarm SP1: delay 0s
Alarm SP2: on / off off
Alarm SP2: value 6.50pH
Alarm SP2: behavior lower limit
Alarm SP2: delay 0s
Alarm Rel: norm / inv normal
SP1 – SP2: hysteresis 5
Pump monitoring 3'600s (1h)
USB settings:
Clock setup: 2 h
Date setup: DDMMYY
Log period: 1s

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M3020R Operating Manual
Q. Mechanical Dimensions
Side view:

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M3020R Operating Manual
Rear view:

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M3020R Operating Manual
R. Technical Data
Measuring range: 0,00 to 1 ,00pH -1000 to +1000mV
Resolution: 0,01pH 1mV
Accuracy: 0,01pH 3mV
Long term stability, 1 year: 0,02pH 6mV per year at 23°C
Display: Graphic LCD 128x128 pixel
Pixel size: 0. x0. mm
Temperature drift: max. 50µV/°C
Max. humidity: non condensing
Input impedance: 1000G-Ohm, 10e12-Ohm
Input bias current: max. 1,5pA
Temperature: -3.0...120.0°C temperature compensation by Pt-100, 3-wire, or by hand.
Relay control: Switchable between automatic or manual in the main screen by key F
ENT key: quick access to the settings in the main screen or save parameters
ESC key: access to the main menu, press and hold 3sec, or exit menu item
+ / - key: set values or control relays
F1 / F2 key: control relays 3 and on the main screen
F3 key: fast access to the probe calibration on the main screen
F key: switch between automatic and manual on the main screen
Programming functions: adjustable caption display and various setting options via software
Input variant: Analog and digital ISM InPro (3250i,3253i, 260i, 800i...) or
Analog and 2-wire transmitter (M2920)
Option 2-wire transmitter: 20V/2 mA, range: ...20mA = -1000...+1000mV
Signal current output: 0...20mA, galvanically isolated, adjustable over full range
Max load: 500Ohm
Output impedance: typ. >1M-Ohm
Relay contact: 0...1 pH, adjustable over the full range
Hysteresis: 5 - 200 digits adjustable
Limit value status: displayed with green lamps for contact 1/2, no lamps for optional contact 3/
Relay outputs: floating changeover contacts, Max. 6A, 2A at 230V continuous, inductive
Alarm functions: 2 programmable switching thresholds, Pt-100 alarm if wires are broken, 1Wire
alarm if wires are broken, alarm if the pump running time gets passed and USB
alarm if the stick/media is full. The alarm is displayed with the red lamp and on
the display. Alarm can be acknowledged.
Alarm relay: same specifications as above.
USB: logger function, programmable log-time, 1 to 7200 sec. Use only FAT32
formatted, empty USB flash drives. Stop log mode before removing.
Supply: 20..253VAC/DC, up to 3W
CE-conformity: fullfilled
Terminals:
(n.o. normally
open contact,
n.c. =normally
closed contact,
c.o. =changeover
contact)
Terminals: plug-in terminals on the back panel
pH/mV plug: 13mm DIN plug with Teflon insulation / BNC available on request
Weight: 30 g
Hardware: 2 quick-mounting clips
1 operating instructions with wiring diagram
Warranty: 2 years
Other options: – special measuring range / signal output
– custom functions
– transparent door Ip55
– custom home screen / logo
– 2 additional relay outputs (contact 3/ )
– 2-wire transmitter input (* 19 = Supply, 20 = input)
1 Pt-100 sense - 10 contact 2 n.o. 19 digital input + ISM InPro/*
2 Pt-100 - 11 contact 2 n.c. 20 digital input - ISM InPro/*
3 Pt-100 + 12 contact 2 c.o. 21 contact 3 n/o
PE Pt-100 and current
output
13 PE supply 22 contact 3 n/c
5 current output + 1 N supply 23 contact 3 c/o
6 current output - 15 L1 supply 2 contact n/o
7 contact 1 n.o. 16 alarm contact n.o. 25 contact n/c
8 contact 1 n.c. 17 alarm contact n.c. 26 contact c/o
9 contact 1 c.o. 18 alarm contact c.o. 27-28 do not connect!