Eutech instruments ALPHA RES 1000 User Manual
Alpha RES 1000
Controller/Transmitter
Resistivity
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Preface
This instruction manual serves to explain the use of the Alpha RES 1000 series Resistivity
controller/transmitter. The manual functions in two wa ys: firstly as a step by step guide to help the user
operate the instrument. Secondly, it serves as a handy reference guide. This instruction manual is writ ten
to cover as many anticipated ap plications of the Alpha RES 1000 Resi stivity controller/transmitter. If you
have doubts in the use of the ins trument, please do not hesita te to contact the nearest Thermo Scientific
Authorised Distributor.
The information presented in this m anual is subject to chan ge without notice as improve ments are made,
and does not represent a commitment on part of Thermo Fisher Scientific.
Thermo Fisher Scientific cannot accept any responsibility for damage or malfunction of the unit due t o
improper use of the instrument.
All rights reserved.
TABLE OF CONTENTS
1 INTRODUCTION.................................................................................................1
1.1 DESCRIPTION OF UNIT ....................................................................................1
1.2 APPLICATIONS................................................................................................1
2 ASSEMBLY AND INSTALLATION.....................................................................2
2.1 MEASUREMENT AND CONTROL SYSTEM............................................................2
2.2 UNIT DIMENSIONS ..........................................................................................2
3 ELECTRICAL CONNECTION.............................................................................3
3.1 CONNECTION DIAGRAM...................................................................................3
3.2 BACK PANEL..................................................................................................4
4 OVERVIEW.........................................................................................................5
4.1 KEYPAD AND DISPLAY.....................................................................................5
4.1.1 Keypad................................................................................................................... 5
4.1.2 Display ................................................................................................................... 5
4.2 FUNCTION GROUPS ........................................................................................6
4.3 CONTROL CONCEPT .......................................................................................7
5 MEASUREMENT ................................................................................................8
5.1 ISPLAY IN MEASUREMENT MODE ....................................................................8 D
5.1.1 Check electrode performance................................................................................ 8
5.1.2 Checking set points................................................................................................ 8
5.2 ECURITY CODES...........................................................................................8 S
5.2.1 How to enter and change parameters in Calibration mode.................................... 8
5.2.2 How to enter and change parameters in Advanced Setup mode .......................... 9
6 CALIBRATION MODE......................................................................................10
6.1 RESISTIVITY CALIBRATION.............................................................................10
7 ADVANCED SET-UP MODE............................................................................10
7.1 TEMPERATURE COEFFICIENT SUB-FUNCTION...................................................11
7.1.1 Selecting Pure-water or Linear Temperature Coefficient..................................... 11
7.2 EMPERATURE CALIBRATION (ATC MODE ONLY)..............................................12 T
7.2.1 Setting manual temperature compensation ......................................................... 12
7.3 ONTROL RELAY A/CONTROL RELAY B (SP1/SP2) SUB-FUNCTION ..................13 C
7.3.1 Entering the Set point 1 (Set point 2) sub-function .............................................. 13
7.3.2 Selecting the set point values .............................................................................. 13
7.3.3 Choosing High or Low set points ......................................................................... 13
7.3.4 Selecting a hysteresis (dead band) value (0.000 to 0.200 m
Setting an on-delay time lag................................................................................. 14
7.3.5
7.3.6 Setting an off-delay time lag................................................................................. 15
Ω
or 0.00 to 2.00 m
Ω
)1 3
7.4 ONTROLLER (CNTR) SUB-FUNCTION .............................................................15 C
7.4.1 Entering the Controller sub-function..................................................................... 15
7.4.2 Choosing the controller type (limit or proportional) .............................................. 15
7.4.3 Choosing break/make contact relay type............................................................. 16
7.4.4 Selecting proportional range value Xp................................................................. 16
7.4.5 Maximum Pulse Length (tPL) or Maximum Frequency (FPF).............................. 17
7.5 MEASUREMENT RANGE SUB-FUNCTION...........................................................17
7.5.1 Entering the Measuring Range sub-function........................................................ 17
7.5.2 Selecting Measuring Range sub-function ............................................................ 17
7.5.3 Measurement Range available in the Controller.................................................. 18
7.5.4 Current Output (rng) sub-function........................................................................ 18
7.5.5 Choosing the output type..................................................................................... 18
7.5.6 Selecting Resistivity value at 0(4)mA................................................................... 18
7.5.7 Selecting Resistivity value at 20mA..................................................................... 19
7.6 ONFIGURATION (CONF) SUB-FUNCTION ........................................................19 C
7.6.1 Entering Configuration sub-function..................................................................... 19
7.6.2 Selecting Filter Function and the Alarm or Wash Function.................................. 19
7.6.3 Selecting the alarm time lag (if the relay 3 is set to Alarm).................................. 20
7.6.4 Selecting steady or pulse contact for the alarm relay (if the relay 3 is set to Alarm)20
7.6.5 Wash Contact (if the relay 3 is set to Wash)........................................................ 20
7.6.6 Input Line Resistance Adjust................................................................................ 21
7.6.7 Reverting to factory default settings..................................................................... 21
7.7 ALIBRATION (CAL) SUB-FUNCTION ...............................................................21 C
7.7.1 Entering Calibration mode from Advanced Set-up mode..................................... 21
8 AUTO/MANUAL MODE....................................................................................22
8.1 AUTO MODE (MODE AFTER SWITCH-ON)...........................................................22
8.2 MANUAL MODE.............................................................................................22
9 TECHNICAL SPECIFICATIONS....................................................................... 23
10 GENERAL INFORMATION...........................................................................24
10.1 PACKAGING .................................................................................................24
10.2 RETURN OF GOODS......................................................................................24
10.3 GUIDELINES FOR RETURNING UNIT FOR REPAIR ..............................................24
11 APPENDICES...............................................................................................25
APPENDIX 1 – JUMPER POSITIONS.............................................................................25
APPENDIX 2 – CONDUCTIVITY / RESISTIVITY OF VARIOUS AQUEOUS SOLUTIONS AT 25OC26
APPENDIX 3 - SIMPLE EXPLANATION ON THE FUNCTION OF HYSTERESIS ........................26
APPENDIX 4 – PURE WATER CURVE...........................................................................27
Operating Instructions Alpha RES 1000
1 Introduction
1.1 Description of Unit
Thank you for purchasing the Alpha ¼ DIN Alph a RES 1000 Resistivity process controllers. This unit is
used for measuring the Resistivity of a solution in meg a-ohms. You c an use this unit t o me asure Resis tivity
with limit control. This controller has many user-friendly and safety features which include:
• Menu-driven program that simplifies set-up
• Two ranges of Resistivity measurements-software selectable (Section 7.5.3).
• Built-in memory backup to ensure that calibration data and other information are not erased if
power supply fails
• Automatic temperature compensation (ATC) with Pt100 or Pt 1000
• Manual temperature compensation with independent setting for calibration and process
temperature
• Temperature coefficient variable between 0.00 to 10.00 % per
curve stored in memory. Reference temperature at 25
• 0 to 1999 second time delay adjustment on all relays – minimise false alarms
• Separately adjustable high and low set point hysteresis (dead bands) prevent chattering of relays
around the set points.
• Three control modes: limit, proportional pulse length or proportional pulse frequency.
• Large dual display LCD for easy reading with clear multiple annunciators, alarm status and
operational message annunciators
• Two switching contacts as set-point triggering relays and an alarm output relay
• Separate alarm relay alerts you when set points have exceeded the limits and if the Pt100/Pt10 00
wires are broken or disconnected during the ATC function
• Hold function freezes output current (0/4...20mA) and releases control relays
• LED indicators signal control activities to monitor controller status from a distance
Selectable Filter function stabilises rapid measurement changes.
• Protection against electromagnetic interference - galvan ically isolated 0/4.. 20mA output provides
safety for data logging and control purposes
1.2 Applications
Use this controller in panel mounted enclosures for applications in Pure water and R.O. Systems.
o
o
C. Separate pure water compensation
C.
1
Operating Instructions Alpha RES 1000
A
A
p
p
2 Assembly and Installation
2.1 Measurement and Control System
A typical measurement system consists of:
• an Alpha RES 1000 process controller
• a suitable Resistivity electrode with the appropriate Cell constant a nd integrated temperature sensor Pt
1000 or Pt 100,
• an immersion, flow or process assembly
• a final control element such as pump or valve and
• a chart recorder
Flow Assembly
to Dosing Pumps
Pt100/Pt1000
Temperature Sensor
Process Assembly
with Electrode
2.2 Unit Dimensions
92+ 0.5
92+ 0.5
Mounting Cut-Out
The field-tested control panel housing is 96 x 96 mm; with protection class IP 54 (front).
92
56
Chart Recorder
rollerAlpha RES 1000 Cont
lpha RES 1000
larm / Siren
System
Power Mains
(220/110 VAC)
Flat Gasket (1mm)
(TobeInsertedByCustomer)
Note: The Ta
ed CornersHaveto BeOnTo
96
32
max. 175
max. 45
2
Operating Instructions Alpha RES 1000
3 Electrical Connection
3.1 Connection Diagram
Res.
S/
V
S/S/
Power Mains
2
1
18 19 20
Pt100/Pt1000
36
PEAC: NL
4
Relay 1
5
21 22
PE/S
Relay 2
78 9
Signal Input Resistivi
Alarm
10
11
12 13
* ) indicated contact positions are for currentless or no er
ty
151715
14
PE/S
ror conditions
Signal Outputput Hold In
Res.
-
mA
+
16
3
Operating Instructions Alpha RES 1000
/
3.2 Back Panel
The back panel consists of two connectors. The first connector is the 17-way PCB edge connector and the
other is the 5-way connector.
Connection for the 17-way screw terminals (from left to right):
1. AC mains live wire 10. Alarm/Wash relay resting position (NO)
2. AC mains neutral wire 11. Alarm/Wash relay common
3. AC mains protective earth wire 12. Alarm/Wash relay working position (NC)
4. Relay 1 relay resting position (NC) 13. Hold function switch terminal 1
5. Relay 1 relay common 14. Hold function switch terminal 2
6. Relay 1 relay working position (NO) 15. No connection
7. Relay 2 relay resting position (NC) 16. 0/4 - 20 mA for -ve connection
8. Relay 2 relay common 17. 0/4 - 20 mA for +ve connection
9. Relay 2 relay working position (NO)
Connections for the 5-way screw terminals:
18. Pt1000/Pt100 lead 1 terminal (red)
19. Pt1000/Pt100 sense lead terminal (short 18 & 19 if using a two-wire system)
20. Pt1000/Pt100 lead 2 terminal (green)
21. Resistivity lead 1 (black)
22. Resistivity lead 2 (white)
*cable wire colours stated above are applicable to EC-CS10 series. For other electrodes, please check
electrode specifications.
IMPORTANT: The
Alarm relay functions
as an “Active Low”
device i.e. it switches
OFF under Alarm
condition. Therefore
the Alarm display
device should be
connected to the ‘NC’
contacts of the relay. If
the relay is configured
as “wash”, then it
+
works in the ‘Active
High’ mode. Therefore
the wash pump has to
be connected across
its “NO” contacts.
FUSE 250VAC
100 mA
(F)
LNPE
RELAY1
Pt100
Pt1000
RELAY2
cell
ALARM
J2
HOLD
-
NC
4
Operating Instructions Alpha RES 1000
4 Overview
4.1 Keypad and Display
4.1.1 Keypad
•
Perform rapid calibration
•
Allows entry to Set up mode
• Select individual functions within the function group of Set up mode
• Store input data in the Set up mode
• Start calibration in the calibration mode
•
Select various function groups in the Set up mode.
• Set parameters and numerical values in sub functions of Set up mode
If pressed continuously, the setting speed increases
• Control the relays in the MANUAL function
• Return to the Measurement mode when both keys are pressed together
Switch between AUTO and MANUAL relay operation using a code
•
•
Display set-point values for the switch contacts in AUTO operation mode
• Switch between RELAY A and RELAY B in MANUAL relay operation mode
4.1.2 Display
The LCD display features two numerical displays that show status messages and measured val ues for easy,
quick reference. The display provides short-text information for setting parameters and configuration.
HOLD SETUP MEA
READY
-8.8.8.8
8
•
• Alarm display if limit value overshoot or the ATC connection is broken.
S CAL
Display for RELAY A/B. Green LED indicates measured value within limit while
RED LED indicates measured value outside limit.
• HOLD: Relay position and current output are frozen
• SETUP: Set-up mode of function groups
• MEAS: Measurement mode
mΩ
• CAL: Calibration mode of Resistivity
• READY: Comes on after a successful calibration
o
C
• ATC: Comes on in the ATC mode. Disappears in the
Manual temperature Compensation mode. “ ATC” flashes
if the temperature probe is faulty in its ATC mode
• Range No.: Indicates the measurement range selected
5
Operating Instructions Alpha RES 1000
4.2 Function Groups
The main function and sub-function groups are organised in a matrix format for configuration and selection of
parameters. The main function groups are:
1) Temperature Coefficient settings (tC)
2) Temperature Measurement / compensation settings (SEt
3) Control relay 1 configuration (SP1)
4) Control relay 2 configuration (SP2)
5) Control type (Cntr)
6) Current output (rng)
7) Configuration (ConF)
8) Calibration (CAL rES)
HOLD
SETUP
HOLD
SETUP
HOLD
SETUP
o
C)
HOLD
SETUP
SETUP
SEt
o
C
HOLD
tc
SETUPHOLD
HOLD SETUP
SP1
rng
HOLD
SP2
SETUP
Cntr
rES
Set-up parameters can be viewed or changed by entering a security code. See Section 5.2 for security code
information.
4.2.1 How to view operating parameters without access to change them:
000
S.Cd
d) Press ENTER key at a particular sub-function to view in detail.
e) Press ENTER key to return to sub-function menu.
f) Press Δ and ∇ keys simultaneously (Escape key) at any time to return to Measurement mode.
Note: To simplify operations, the controller will n ot display parameters t hat are not releva nt to a particular subfunction.
a) Press ENTER key. Display will prompt to enter security code (S.Cd).
Leave security code at “000” (do not enter a security code).
b) Press ENTER key again. This allow s for viewing (not change) any sub-
functions’ settings.
c) Press Δ or ∇ keys to scroll through sub-functions.
6
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