Hanna Instruments EC 700 User Manual
EC 700EC 700
EC 700
EC 700EC 700
TDS 705TDS 705
TDS 705
TDS 705TDS 705
EC 710EC 710
EC 710
EC 710EC 710
Process,
Panel-mounted,
Microprocessor-based,
Conductivity and TDS
Controllers
Instruction Manual
Dear Customer ,
Thank you for choosing a Hanna Product.
This instruction manual has been written for the following
products:
EC 700 EC controller with dual setpoint, ON/OFF
and PID control, analog output
TDS 705 TDS controller with dual setpoint, ON/OFF
and PID control, analog output
EC 710 EC and TDS controller with dual setpoint,
ON/OFF and PID control, analog output
TABLE OF CONTENTS
PRELIMINARY EXAMINATION . . . . . . . . . . . . . . . . . . 4
GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . 4
FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . 6
MECHANICAL DIMENSIONS . . . . . . . . . . . . . . . . . . 7
SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . 8
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Please read this instruction manual carefully before using the
instrument. It will provide you with the necessary information
for the correct use of the instrument, as well as a precise idea
of its versatility .
These instruments are in compliance with
directives
EN 50081-1, EN 50082-1 and EN 61010-1.
© 1999 Hanna Instruments
All rights are reserved. Reproduction in whole or in part is prohibited without the written
consent of the copyright owner , Hanna Instruments Inc., 584 Park East Drive, W oonsocket, Rhode Island, 02895 , USA.
SETUP MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
CONTROL MODE . . . . . . . . . . . . . . . . . . . . . . . . . 18
IDLE MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
ANALOG OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . 27
CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
LAST CALIBRATION DATA . . . . . . . . . . . . . . . . . . . . 36
F AULT CONDITIONS AND SELFTEST PROCEDURES . . 3 7
EXTERNAL FUNCTIONS . . . . . . . . . . . . . . . . . . . . . 40
STARTUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
EC VALUES AT VARIOUS TEMPERATURES. . . . . . . . . 42
EC/TDS PROBE MAINTENANCE . . . . . . . . . . . . . . . . 43
ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
CE DECLARATION OF CONFORMITY. . . . . . . . . . . 47
ISO 9000 Certified
Company since 1992
32
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred
during shipping. If there is any noticeable damage, notify
your Dealer or the nearest Hanna Customer Service Center
immediately .
Note Save all packing materials until you are sure that the instru-
ment functions correctly . Any damaged or defective items must
be returned in their original packing materials together with
the supplied accessories.
GENERAL DESCRIPTION
EC 700, TDS 705 and EC 710 are real time microprocessorbased EC or TDS controllers. They provide accurate
measurements, flexible ON/OFF or proportional control capabilities, analog input and output, dual setpoint and alarm
signal.
The system is composed of a case inside which the signal
conversion circuitry , the microprocessor circuitry and the output
power drivers are contained.
MAIN FEATURES OF DIFFERENT MODELS
• Display: large LCD with 4 ½ 17 mm digits and 3 ½ 10 mm
digits.
• LEDs: four LEDs are provided for signaling the energizing
of relay 1 and 2 (yellow LEDs) and alarm relays (a green
and a red LED).
• Relays: 1 or 2 output relays for low conductivity or high
conductivity dosage (COM, NO and NC contacts) and 1
output relay for alarm condition (COM, NO and NC contacts).
• Calibration and Setup procedures allowed only through
an unlock password.
• Calibration: 2 points with Hanna EC and TDS calibration
solutions.
• Four different EC working ranges (0 to 199.9µS; 0 to
1999µS; 0 to 19.99mS; 0 to 199.9mS) for EC700 and
EC710 models.
• Four different TDS working ranges (0 to 100.0ppm; 0 to
1000ppm; 0 to 10.00ppm; 0 to 100.0ppm) for TDS705
model.
• Possibility to switch to TDS measurements with conversion
factor from 0.00 to 1.00 (EC710 only).
• T emperature compensation of the HANNA standard solutions.
• T emperature compensation of the EC and TDS reading with
temperature coefficient ß selectable from 0 to 10%/°C.
• Manual temperature setting when the temperature probe is
not inserted or temperature exceeds the upper range.
• Last calibration data internally recorded (non-volatile EEPROM memory): calibration date and time, cell constant,
calibration solution values.
• Input:4-ring EC/TDS probe with cell constant 2.0 ± 10%,
or 4-20mA analog input from a transmitter .
• Output:
- isolated 0-1 mA, 10 KW maximum load (optional);
- isolated 0-20 mA, 750 W maximum load (optional);
- isolated 4-20 mA, 750 W maximum load (optional);
- isolated 0-5 VDC, 1 KW minimum load (optional);
- isolated 1-5 VDC, 1 KW minimum load (optional);
- isolated 0-10 VDC, 1 KW minimum load (optional).
• Real time clock.
54
FUNCTIONAL DESCRIPTION
FRONT PANEL
1. Liquid Crystal Display
2. SETUP key enters setup mode
3. CFM key confirms current choice (and skips to the next item)
4. CAL key initiates and exits calibration mode
5. ! key increases the blinking digit/letter by one when selecting a
parameter. Advances forward while in last calibration data
viewing mode. Increases the temperature setting when
temperature probe is not inserted
6. CAL DATA key last calibration data viewing (enters and exits)
7. " key decreases the blinking digit/letter by one when selecting a
parameter. Reverts backward while in last calibration data
viewing mode. Decreases the temperature setting when
temperature probe is not inserted
8. LCD key exits from setup and reverts back to normal mode (in idle
or control phases with the measurement on the display).
During EC/TDS calibration, it alternates EC/TDS buffer
value and current cell constant on the display. In EC710
model only, it switches between EC and TDS reading
9. # key moves to the next digit/letter (circular solution) when selecting a parameter. Same as ! key during last calibration
data viewing mode
10. LEDs
REAR PANEL
1. Analog Output
2. Power Supply
3. Alarm Terminal
4. Contact 2 - Second Dosing Terminal
5. Timer
6. Hold
7. Contact 1 - First Dosing Terminal
8. Pt 100 Temperature Sensor connector
9. EC/TDS probe connector
10. Power supply output for external transmitter
11. 4-20 mA input from external transmitter
Unplug the meter before any electrical connection.
MECHANICAL DIMENSIONS
FRONT VIEW
SIDE VIEW
76
SPECIFICATIONS
INSTALLATION
Ranges 0.0 to 199.9 µS, 0 to 1999 µS (EC 700, EC 710 only)
0.00 to 19.99 mS, 0.0 to 199.9 mS (EC 700, EC 710 only)
0.0 to 100.0 ppm, 0 to 1000 ppm (TDS 705, EC710* only)
0.00 to 10.00 ppt, 0.0 to 100.0 ppt (TDS 705, EC710* only)
-10.0 to 100.0 °C
Resolution 0.1 µS, 1 µS (EC 700, EC 710 only)
0.01 mS, 0.1 mS (EC 700, EC 710 only)
0.1 ppm, 1 ppm (TDS 705, EC710 only)
0.01 ppm, 0.1 ppm (TDS 705, EC710 only)
0.1 °C
Accuracy ±0.5 % full scale (EC and TDS)
(@20°C/68°F) ±0.5°C between 0 to 70°C, ±1°C outside
Temperature Compensation Automatic from -10 to 100°C or manual with
Temperature Coefficient from 0.00 to 10.00%/°C
T ypical EMC Deviation ±2 % full scale (EC and TDS)
±0.5 °C
Installation Category II
Probe HI 7639
4-ring EC/TDS probe (K=2) with built-in 3-wire PT100
temperature sensor and 5 mt shielded cable
Analog Input 4 - 20 mA
Power Supply 230 ±10% VAC or 115 ±10% VAC, 50/60 Hz
Power Consumption 10 VA
Over Current Protection 200 mA 250V FAST FUSE
Relays 1 and 2 • Electromechanical relay SPDT contact outputs,
5A-250 VAC, 5A - 30 VDC (resistive load)
Alarm Relay • Electromechanical Relay SPDT contact output,
5A - 250 VAC, 5A - 30 VDC (resistive load)
Environment 0-50 °C; max 95% R.H. non-condensing
Enclosure single case ½ DIN
Weight approximately 1.6 kg. (3.5 lb.)
EC 700, TDS 705
and EC 710 offer a
multitude of possibilities, from single and
dual setpoints to ON/
OFF or PID dosage,
isolated outputs with
user-selectable zoom,
recorder outputs in
mAmps and volts.
Use the 3-wire Pt 100
temperature sensor to
compensate for the
cable resistance and
have a precise automatic temperature
compensation of the
measurements in long
distance applications.
See the diagram for a
recommended installation.
* Note: actual TDS range for EC710 depends on TDS factor set.
98
••
• Power Supply: Connect a 3-wire power cable
••
to the terminal strip, while paying attention
to the correct live (L), earth (PE) and neutral (N) terminal connections.
Power: 115VAC -100 mA / 230VAC - 50 mA.
Live Contact: fused inside 200mA.
PE leakage current 1 mA; this contact must be con-
nected to ground.
••
• Conductivity input: the default input is from conductivity
••
probe. Connect the EC probe to the terminals #9 on page
7. Connect the cable shield to pin 1, and the other four
wires according to the following table:
Color Pin #
GREEN 2
WHITE 3
RED 4
BLUE 5
••
• Pt 100 T erminals: these contacts (#8 on page 7) connect
••
the Pt 100 temperature sensor for automatic temperature
compensation of measurement. The HI7639 EC/TDS probe
has a built-in 3-wire Pt 100 sensor to be connected according to the following table:
Color Pin #
GRAY 6
BROWN 7
YELLOW 8.
If using a different Pt 100, connect it as explained below .
In the case of a 2-wire sensor connect
the Pt 100 to pins 1 and 3, and short
pins 2 and 3 with a jumper wire.
If the Pt 100 has more than 2 wires, connect the two wires of one end to pins 2
and 3 (pin 2 is an auxiliary input to compensate for the cable resistance) and one
wire from the other end to pin 1. Leave
the fourth wire unconnected, if present.
Note If the meter does not detect the temperature probe, it will
switch automatically to manual temperature compensation
with the temperature adjustable through the up and down
arrow keys. The “°C” symbol will blink on the LCD.
Note All external cables to be connected to the rear panel should
be ended with cable lugs.
• Analog output: Connect an external recorder with a 2-wire
cable to these terminals (#1 on page 7) paying attention
to the correct polarity. A wide variety of output signals,
either in V or in mA, is available to fit most standards.
• Contact 1 and 2: Connect the dosing devices to these
terminals (#4 and #7 on page 7) in order to activate and
deactivate them according to the selected control parameters.
• mA Input: to switch to mA input signal from a
conductivity transmitter (e.g. HI8936, HI98143
or HI98144 series) see setup procedure (code
6). Connect the two signal wires from the transmitter to terminals #11 on page 7, paying attention to the correct polarity .
An unregulated 10 ÷ 30 VDC - 50 mA max.
power supply output (#10 on page 7) is provided to power the transmitter , if needed.
Once the installation is completed, select the appropriate
working range, the reference temperature (20 or 25°C) and
perform conductivity or TDS calibration as described in this
instruction manual. Set the control parameters according to
the process.
1110
SETUP MODE
EC 700, TDS 705 and EC 710 offer a multitude of possibilities from ON/OFF or PID dosage to analog recorder output
and from alarm to selftest features.
The Setup Mode allows the user to set all needed characteristics of the meter .
The setup mode is entered by pressing SETUP
and entering the password when the device is
in idle or control mode.
Generally speaking, if the password is not inserted the user
can only view the setup parameters (except for password)
without modifying them (and the device remains in control
mode). An exception is certain setup items, or flags, which
can activate special tasks when set and confirmed.
Each setup parameter (or setup item) is assigned a two-digit
setup code which is entered and displayed on the secondary
LCD .
The setup codes can be selected after password and CFM
are pressed. When CFM is pressed, the current setup item is
saved on EEPROM and the following item is displayed.
Whenever LCD is pressed, the device reverts back to control mode.
The same is true when CFM is
pressed on the last setup item.
The possible transitions in setup mode are the following:
ENTERING THE PASSWORD
• Press SETUP to enter the setup mode. The LCD will display
• Then confirm the displayed digit with
# and move to the next one.
• When the whole password has been
inserted, press CFM to confirm it.
Note The default password is set at “0000”.
• The LCD will display “SET” on the
upper part and “c.00” on the lower,
allowing the user to edit setup parameters (see table below).
• Enter the code of the parameter you want to set, using the
arrow keys as per the password procedure above (e.g. 41).
• Confirm the code by pressing CFM and the default or the
previously memorized value will be displayed with the first
digit blinking.
Note When the password is not inserted or a wrong password is
confirmed, the display will only show the previously memorized value, without blinking (read only mode). In this case,
the value cannot be set. Press LCD and start again.
“0000” on the upper part and “PAS” on the lower. The first
digit of the upper part of the LCD will blink.
• Enter the first value of the password by the ! or " keys.
• Enter the desired value using the arrow keys and then press
CFM.
1312
• After confirmation, the selected parameter
is displayed. The user can scroll through
the parameters by pressing CFM.
Code Valid Values Default PW
14 Relay 1 deviation (D1) 0.5 to 10% f.s. 1% f.s. no
In order to directly set another parameter , press SETUP again and enter the
code or scroll to it by pressing CFM.
The following table lists the setup codes along with the description of the specific setup items, their valid values and whether
password is required to view that item (“PW” column):
Code Valid Values Default PW
00 Factory ID 0 to 9999 0000 no
01 Process ID 0 to 9999 0000 no
02 Control enable/disable 0: C.M. disabled 0 no
1: C.M. enabled
03 Range 1: 0.0-199.9 µS (or 100.0 ppm) 4 no
(depends on model) 2: 0-1999 µS (or 1000 ppm)
3: 0.00-19.99 mS (or 10.00 ppt)
4: 0.0-199.9 mS (or 100.0 ppt)
04 Reference Temperature 20°C or 25°C 25°C no
05 Temperature Coefficient 0.00 to 10.00 %/°C 2.00 no
06 Input Selection 0: conductivity probe 0 no
1: 4-20 mA input signal
07 Temperature ATC: Automatic ATC no
compensation User: Manual
08 TDS Factor (EC710 only) 0.00 to 1.00 0.50 no
11 Relay 1 mode 0: disabled 0 no
(M1) 1: ON-OFF high setpoint
2: ON-OFF low setpoint
3: PID, high setpoint
4: PID, low setpoint
12 Relay 1 setpoint (S1) 0.5 to 99.5% full scale 25% f.s. no
15 Relay 1 reset time 0.1 to 999.9 minutes 999.9 no
16 Relay 1 rate time 0.0 to 999.9 minutes 0.0 no
21 Relay 2 mode (M2) same as relay 1 0 no
22 Relay 2 setpoint (S2) 0.5 to 99.5% full scale 75% f.s. no
23 Relay 2 hysteresis (H2) 0 to 5% f.s. 1% f.s. no
24 Relay 2 deviation (D2) 0.5 to 10% f.s. 1% f.s. no
25 Relay 2 reset time 0.1 to 999.9 minutes 999.9 no
26 Relay 2 rate time 0.0 to 999.9 minutes 0.0 no
30 Relay 3 high alarm (HA) 0.5 to 99.5% full scale 95% f.s. no
HA-Hys>LA+Hys,Hys=1.5%f.s.,HA>S1 or HA>S2
31 Relay 3 low alarm (LA) 0.5 to 99.5% full scale 5% f.s. no
LA+Hys<HA-Hys,Hys=1.5%f.s.,LA<S1 or LA<S2
32 Proportional control 1 t o 3 0 m i n 5 no
mode period
33 Maximum relay ON time 1 to 10 min 10 no
(after which an alarm mode is entered)
34 Alarm mask time 00:00 to 30:00 00:00 no
40 Analog output selection 0: 0-1mA 2 no
1: 0-20 mA
2: 4-20 mA
3: 0-5 VDC
4: 1-5 VDC
5: 0-10 VDC
41 Analog output 0 to 100% full scale 0 no
lower limit (O_VARMIN) (O_VARMIN < O_VARMAX - 5% f.s.)
42 Analog output 0 to 100% full scale 100% f.s. no
upper limit (O_VARMAX) (O_VARMIN < O_VARMAX - 5% f.s.)
13 Relay 1 hysteresis (H1) 0 to 5% f.s. 1% f.s. no
1514
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