Hanna Instruments HI 700 Series User manual

HI700 / HI710 Series
Process,
Panel-mounted,
Microprocessor-based,
Conductivity and TDS Controllers
www.hannainst.com

All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner,
Hanna Instruments Inc., Woonsocket, Rhode Island, 02895, USA.
Dear Customer,
Thank you for choosing a Hanna Instruments product.
This instruction manual has been written for the following products:
HI700221-αEC controller with dual setpoint, ON/OFF and PID controls, analog
output.
HI700222-αEC controller with dual setpoint, ON/OFF and PID controls, RS485
port.
HI710221-αEC and TDS controller with dual setpoint, ON/OFF and PID controls,
analog output.
HI710222-αEC and TDS controller with dual setpoint, ON/OFF and PID controls,
RS485 port.
α = 1 means 115 Vac, 50/60 Hz power supply
α = 2 means 230 Vac, 50/60 Hz power supply
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.
If you need additional technical information, do not hesitate to e-mail us at:
[email protected].

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TABLE OF CONTENTS
PRELIMINARY EXAMINATION .......................... 4
GENERAL DESCRIPTION ............................ 4
FUNCTIONAL DESCRIPTION........................... 6
MECHANICAL DIMENSIONS........................... 7
SPECIFICATIONS ................................ 8
INSTALLATION ................................. 9
SETUP MODE .................................12
CONTROL MODE ................................18
IDLE MODE ..................................25
ANALOG OUTPUT................................26
RS 485 COMMUNICATION ...........................28
CALIBRATION .................................35
LAST CALIBRATION DATA ............................43
FAULT CONDITIONS AND SELFTEST PROCEDURES ................44
EXTERNAL FUNCTIONS .............................48
STARTUP ...................................49
EC VALUES AT VARIOUS TEMPERATURES ....................50
PROBE MAINTENANCE .............................51
ACCESSORIES .................................52

4
GENERAL DESCRIPTION
HI700 and HI710 series are real time microprocessor-based EC or TDS controllers. They
provide accurate measurements, flexible ON/OFF or proportional control capabilities,
analog input and output, RS485 port, 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).
• RS485 isolated communication link (HI700222 and HI710222 only).
•Calibration and Setup procedures allowed only through an unlock password.
• Calibration: 2 points with Hanna Instruments 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).
• Four different TDS working ranges (0 to 100.0ppm; 0 to 1000ppm; 0 to 10.00ppm;
0 to 100.0ppm) for HI710 models.
• Possibility to switch to TDS measurements with conversion factor from 0.00 to 1.00
(HI710 models only).
• Temperature compensation of the Hanna Instruments standard solutions.
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and examine it carefully. For further
assistance, please contact your local Hanna Instruments Office or email us at tech@
hannainst.com.
Note Save all packing materials until you are sure that the instrument functions correctly.
Any damaged or defective items must be returned in their original packing materials
together with the supplied accessories.

5
•Input: 4-ring EC/TDS probe with cell constant 2.0 ± 10%, or 4-20mA analog input
from a transmitter.
• Output (HI700221 and HI710221 only):
- isolated 0-1 mA, 10 Kmaximum load (optional);
- isolated 0-20 mA, 750 maximum load (optional);
- isolated 4-20 mA, 750 maximum load (optional);
- isolated 0-5 VDC, 1 Kminimum load (optional);
- isolated 1-5 VDC, 1 Kminimum load (optional);
- isolated 0-10 VDC, 1 Kminimum load (optional).
• Real time clock.
• Temperature 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.

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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 HI710 models 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

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REAR PANEL
1. 6-pin RS485 terminal (HI700222 and HI710222 only)
2. Analog Output (HI700221 and HI710221 only)
3. Power Supply
4. Alarm Terminal
5. Contact 2 - Second Dosing Terminal
6. Timer
7. Hold
8. Contact 1 - First Dosing Terminal
9. Pt 100 Temperature Sensor connector
10. EC/TDS probe connector
11. Power supply output for external transmitter
12. 4-20 mA input from external transmitter
Unplug the meter before any electrical connection.
MECHANICAL DIMENSIONS
FRONT VIEW SIDE VIEW

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* Note: actual TDS range for HI710 models depends on TDS factor set.
Ranges
0.0 to 199.9 µS, 0 to 1999 µS
0.00 to 19.99 mS, 0.0 to 199.9 mS
0.0 to 100.0 ppm, 0 to 1000 ppm (HI710* only)
0.00 to 10.00 ppt, 0.0 to 100.0 ppt (HI710* only)
-10.0 to 100.0 °C
Resolution
0.1 µS, 1 µS, 0.01 mS, 0.1 mS
0.1 ppm, 1 ppm (HI 710 models only)
0.01 ppm, 0.1 ppm (HI 710 models only)
0.1 °C
Accuracy
(@20 °C/68 °F)
±0.5 % F.S. (EC and TDS)
±0.5 °C (0 to 70 °C), ±1 °C (outside)
Typical EMC Deviation ±2 % F.S. (EC and TDS) / ±0.5 °C
EC Calibration Automatic or manual at 1 point
Temperature
Compensation
Automatic or manual, -10 to 100 °C with adjustable
temperature coefficient from 0.00 to 10.00%/ °C
TDS Factor (HI710 only) Adjustable from 0.00 to 1.00
Outputs Analog: isolated 0-1 mA, 0-20 mA and 4-20 mA;
0-5 Vdc, 1-5 Vdc and 0-10 Vdc; or digital: RS485
Analog Input 4-20 mA
Setpoint Relay 2 contact outputs SPDT, 5A-250 Vac, 5A-30 Vdc
(resistive load). Fuse protected: 5A, 250V FUSE
Alarm Relay Contact output SPDT, 5A-250 Vac, 5A-30 Vdc
(resistive load). Fuse protected: 5A, 250V FUSE
Power Supply 230 ±10% Vac or 115 ±10% Vac, 50/60 Hz
Power Consumption 15 VA
Over Current Protection 400 mA 250V FAST FUSE
Environment 0 to 50 °C (32 to 122 °F); RH max 95%
Installation Category II
Enclosure Single case ½ DIN
Dimensions Panel cutout: 140 x 140 mm
Instrument: 144 x 144 x 170 mm
Weight Approximately 1.6 kg. (3.5 lb.)
SPECIFICATIONS

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INSTALLATION
HI700 and HI710 series offer a
multitude of possibilities, from
single and dual setpoints to
ON/OFF or PID dosage, isolated
outputs with user-selectable
zoom, bi-directional RS485,
recorder outputs in mAmps and
Volts. Use the 3-wire Pt 100
temperature sensor to compen-
sate 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.

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• 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: 115 Vac -100 mA / 230 Vac - 50 mA.
Live Contact: fused inside 400 mA.
PE leakage current 1 mA; this contact must be connected to ground.
• Conductivity input: the default input is from conductivity probe. Connect the EC probe
to the terminals #10 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 Terminals: these contacts (#9 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, separated from the conductivity probe, connect the cable
shield to pin 9, and the other wires as explained below.
In the case of a 2-wire sensor connect the Pt 100 to pins
6 and 8, and short pins 7 and 8 with a jumper wire.
If the Pt 100 has more than 2 wires, connect the two wires of one end to pins 7 and
8 (pin 7 is an auxiliary input to compensate for the cable resistance) and one wire
from the other end to pin 6. 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.