Hanna Instruments HI 943500A User Manual

Instruction Manual

HI 8931 • HI 8936 Series

HI943500 Series

Conductivity Process

Controllers and Transmitters

www.hannainst.com

Dear Customer, Thank you for choosing a HANNA instruments® product. Please read this instruction manual carefully before using the instrument. This manual will provide you with all the necessary information for correct use of the instruments, as well as a precise idea of thier versatility in a wide range of applications. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com These instruments are in compliance with the directives.

TABLE OF CONTENTS

Preliminary Examination ............................................................ 4

General Description .................................................................... 4

Functional Description HI 8931 & HI 943500 ............................ 6

Functional Description HI 8936 ................................................ 10

Conductivity Probes .................................................................. 13

Specifications HI 8931 & HI 943500 ....................................... 15

Specifications HI 8936 ............................................................. 16

Connections .............................................................................. 17

Operational Guide ................................................................... 25

Calibration Procedure of HI 8931 & HI 8936 with HI 7635 .... 31

Calibration Procedure of HI 8931 & HI 8936 with HI 7638 .... 35

Calibration Procedure of HI 943500 with HI 7638................... 39

Conductivity Versus Temperature Chart ..................................... 41

Diagnostic Tests ........................................................................ 42

Installation Examples ............................................................... 44

Probe Maintenance and Cleaning ............................................ 46

Accessories ................................................................................ 47

Warranty................................................................................. 49

CE Declaration of Conformity ..................................................... 50

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.

Each model is supplied complete with:

• Mounting brackets (not for HI 8936 series)

• Transparent splsh-proof cover (not for HI 8936 series)

• Instruction manual

Note: Save all packing materials until you are sure that the

instrument functions correctly. All defective items must be returned in the original packing materials together with the supplied accessories.

GENERAL DESCRIPTION

The HI 8931 and HI 943500 are panel-mounted conductivity controllers designed for simplicity of use in a wide range of industrial process applications.

The instruments are designed with a standard DIN panel mount with membrane keypads and large LCD on the front, and provide a series of auto-diagnostic functions.

Four models with different measurement ranges are available to suit any application needs:

• HI8931A / HI 943500A / HI8936A / HI 8936AL

from 0.0 to 199.9 mS/cm

• HI8931B / HI 943500B / HI 8936B / HI 8936BL

from 0.00 to 19.99 mS/cm

• HI 8931C / HI 943500C / HI8936C / HI8936CL

from 0 to 1999 μS/cm

• HI 8931D / HI 943500D / HI8936D / HI8936DL

from 0.0 to 199.9 μS/cm

Other features include: recorder output in 0-20 mA or 4-20 mA configuration; LED indicators (for HI 8931 and HI 943500) which identify whether the controller is in operation mode or selection mode.

Each instrument of the HI 8931 and HI 943500 series, is supplied with a plastic front cover and two mounting brackets. Power cables are not included.

Probes, power supply, contacts and recorders are connected on the rear panel through screw terminals.

Using HI 8931 in conjunction with a 4-20 mA output transmitter (HI 8936 or HI 8936L series) will assure you of a strong, interferencefree signal at distances up to 300 meters (1000').

For in-line applications use the HI 7635 probe, while for tanks the HI 7638 with external threads is recommended. These probes are provided with built-in NTC sensor for temperature compensated conductivity measurements. The probe cable length is 3 meters (10').

HI 943500 features a direct connection up to 20 m (67'), without intermediate amplifiers, to the conductivity probe HI 7638 with DIN connector and automatic temperature compensation.

FUNCTIONAL DESCRIPTION

HI 8931 & HI943500

KEYPAD MEASURE To read measurements and enable diagnostic tests ΔAL To display set tolerance of the alarm SET To set working point TEST SLOPE Diagnostic function TEST OFFSET Diagnostic function

When a key is pressed, the corresponding LED lights up to indicate that the function is active.

TRIMMERS OFFSET For offset calibration

SLOPE For slope calibration ΔAL To set the alarm tolerance COARSE To coarsely adjust the set point SET FINE To finely adjust the set point

REAR PANEL OF HI 8931 SERIES

1. POWER OUTPUT terminals (+20 V and COM) for connec-

tion to a conductivity transmitter (HI 8936)

2. mA INPUT from a conductivity transmitter

3. mA OUTPUT terminals for connection to a recorder

4. SET SELECT terminals for reverse control operation

5. SET terminals for connection to a dosing pump

6. ALARM terminals for connection to an external alarm device

7. Power supply terminals

8. Fuse holder

LEDS SET ON To indicate that the dosage is active

ALARM To indicate an alarm condition

Unplug the instrument from power supply before replacing the fuse.

190mm MIN

7.50"

135mm

5.31"

0.25/4mm

0.01/0.160"

144mm

5.67"

ADJUSTABLE LOCATION BRACKET

m "

2.83"

REAR PANEL OF HI 943500 SERIES

MECHANICAL DIMENSIONS OF HI 8931 AND HI 943500

Front view of the panel-mounted unit

1. DIN connector for conductivity probe

2. mA OUTPUT terminals for connection to a recorder

3. SET SELECT terminals for reverse control operation

4. SET terminals for connection to a dosing pump

5. ALARM terminals for connection to an external alarm device

6. Power supply terminals

7. Fuse holder

69mm

2.71"

72mm

141mm

5.55"

144m

5.67

These dimensions show the cutout size for the installation.

Side view of the panel-mounted unit

Unplug the instrument from power supply before replacing the fuse.

Adjustable location brackets (supplied with the meter) allow the indicator to slide into the cutout and will hold the unit securely in place. 190 mm (7.50") is the minimum amount of room required to install the indicator with the cables connected.

FUNCTIONAL DESCRIPTION HI 8936

HI 8936A HI 8936B HI 8936C HI 8936D

SIDE VIEW OF HI 8936 SERIES

1. Back cover

2. Top cover

3. Liquid Crystal Display

4. Screws for fastening the top cover

HI 8936AL HI 8936BL HI 8936CL HI 8936DL

1. Top cover

2. Cable glands for wiring

1110

142mm

MECHANICAL DIMENSIONS OF

m "

HI 8614

165mm

m "

HI 8614L

3.54"

HI 8936A, HI8936B, HI 8936C, HI8936D

6.50"

100mm

3.94"

4 x 4.3mm

90mm

3.54"

4 x 0.17"

155mm

6.10"

MECHANICAL DIMENSIONS OF

HI 8936AL, HI8936BL, HI8936CL, HI 8936DL

110m

CONDUCTIVITY PROBES

HI 7635 In-line Conductivity Probe

HI 7635 is a one piece, molded conductivity probe with pipe threads

(1" NPT) at both ends.

4.33

This allows the probe to attach to an in-line system, and to be used in conjunction with the HI 8936 conductivity transmitter.

The HI 7635 uses a 4-ring potentiometric measuring method. This method is highly accurate and requires very little maintenance.

The construction of the housing is rugged, fiber-reinforced polypropylene.

The maximum working pressure of this unit is 5 bar (72.5 psi). Do not use in systems where the temperature exceeds 80°C (176°F).

90mm

24mm

0.94"

45mm

1.77"

4 x 4.3mm

4 x 0.17"

58mm

2.28"

165mm

6.50"

155mm

6.10"

126mm

5.00"

100mm

3.94"

110m

HI7635

4.33

2.87"

52mm

2.04"

1" NP

5.60"

73mm

1312

HI7638 Tank Conductivity Probe

HI7638 conductivity probe combines the proven 4-ring potentiometric

method of measuring conductivity with the platinum sensor and stainless steel external thread.

This method incorporates a series of four platinum rings into the probe shaft and is highly accurate requiring very little maintenance.

The removable plastic cover resists the harmful effect of most chemicals and can be unscrewed for quick and simple maintenance.

This probe can withstand temperatures of up to 120°C (248°F) and pressure of up to 5 bar (72.5 psi).

This probe is supplied complete with a 7-pin DIN connector.

HI 7638

SPECIFICATIONS HI 8931 & HI 943500

Range HI 8931A - HI 943500A HI 8931B - HI 943500B HI 8931C - HI 943500C HI 8931D - HI 943500D Accuracy (@20°C/68°F) Typical EMC

Deviation 4-20mA INPUT from Transmitter HI 8931A HI 8931B HI 8931C HI 8931D

HI 943500 Conductivity Probe

Calibration

Temp. Compensation HI 8931

HI 943500 Recorder Output

Set Point Relay and Alarm Relay

Power Supply

Environment Panel Cutout Weight Enclosure

0.0 to 199.9 mS/cm

0.00 to 19.99 mS/cm 0 to 1999 μS/cm

0.0 to 199.9 μS/cm ±2% of Full Scale

excluding probe error ±2.5% of Full Scale

±0.4 mA

HI 8936 A or AL (not included) HI 8936 B or BL (not included)

HI 8936 C or CL (not included)

HI 8936 D or DL (not included)

------

HI 7635 for in-line applications or

HI 7638 for tank (not included)

Manual, 2 point, through

offset and slope trimmers

See transmitter HI 8936

Automatic, 0 to 60°C with ß=2%

4 to 20 mA (isolated)

Isolated, 2A, Max. 240V, resistive

load, 1,000,000 strokes

115 or 230 Vac ±10%

(user selectable); 50/60 Hz

-10 to 50°C (14 to 122°F); RH 95% 141 x 69 mm (5.6 x 2.7")

1 kg (2.2 lb.)

DIN 43 700, 144x72 mm (5.7x2.8"),

black anodized aluminum;

front and back with shockproof ABS

plastic, and transparent cover

1514

SPECIFICATIONS HI 8936

Range HI 8936 A/AL HI 8936 B/BL HI 8936 C/CL

HI 8936 D/DL Accuracy (@20°C/68°F)

Typical EMC Deviation Conductivity Probe

Calibration

Temperature Compensation

Output

Power Supply HI 8936 A/B/C/D HI 8936 AL/BL/CL/DL

Protection Environment

Dimensions

Weight

0.0 to 199.9 mS/cm

0.00 to 19.99 mS/cm 0 to 1999 μS/cm

0.0 to 199.9 μS/cm ±2% of Full Scale

excluding probe error

±2% of Full Scale

±0.4 mA

HI 7635 for in-line applications or

HI 7638 for tank (not included)

Manual, 2 point, through

offset and slope trimmers

Fixed or automatic

from 0 to 50°C (32 to 122°F)

with ß=2%

4 to 20 mA not-isolated

max. 500 Ohm

12 to 30 Vdc 17 to 36 Vdc

IP 65

0 to 50°C (32 to 122°F);

RH max 95%

165 x 110 x 90 mm

(6.5 x 4.3 x 3.5")

1 kg (2.2 lb.)

CONNECTIONS

REAR CONNECTIONS FOR HI 8931

• Power Connection Terminals

4-screw-terminal-strip for connection to a 3-wire power cable according to the indicated voltage (115 or 230V).

• IN/OUT Transmitter

2 wires of the 4-core signal cable from the conductivity transmitter (HI8936) have to be connected to the mA input terminals and the other 2 wires to the "+20 V" and "COM" while paying careful attention to the polarity.

+20 V supply is the regulated DC supply required for the operation of the external conductivity transmitter HI 8936.

• Set Contacts

Dosing pumps or other control equipment may be connected to the "SET" (Max. 2A, 240 V) terminals. These contacts act only as a "dry" switch allowing electrical continuity, not as a power supply.

1716

+ 18 hidden pages