Hanna Instruments HI7630-28 User manual

INSTRUCTION MANUAL
Hanna Instruments Inc., 584 Park East Drive, Woonsocket, RI 02895 USA www.hannainst.com
HI510 Compatible
0 to 999.9 mS/cm
T: 0 to 100 °C
pmax: 6 bar
SN: XXXXXXXXXXXX
HI7630-4805
0 to 30 mS/cm
T: 0 to 50 °C
pmax: 6 bar
SN: XXXXXXXXXXXX
HI7630-2800
Conductivity and Temperature
Industrial Smart Probes
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to download the HI510 controller user manual.
https://manuals.hannainst.com/HI510
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with a positive impact on the environment and climate.
HI7630-28
HI7630-48

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.
Hanna Instruments reserves the right to modify the design, construction, or appearance of its products without advance notice.
TABLE OF CONTENTS
1. Preliminary Examination ................................................................................................................3
2. Safety Measures............................................................................................................................3
3. General Description & Intended Use ................................................................................................3
4. Main Features...............................................................................................................................4
5. Series Configuration.......................................................................................................................4
6. Specifications................................................................................................................................5
7. Probe Dimensions & Cable Connection.............................................................................................7
8. Installation ...................................................................................................................................8
9. Wiring the Probe to the Controller..................................................................................................11
10. Calibration................................................................................................................................12
11. Measurements in Ultrapure Water, HI7630-28zz Series Only........................................................14
12. Maintenance.............................................................................................................................14
13. Accessories................................................................................................................................15
14. Abbreviations............................................................................................................................16
Certification......................................................................................................................................16
Recommendations for Users...............................................................................................................16
Warranty .........................................................................................................................................16
Dear Customer,
Thank you for choosing a Hanna Instruments®product.
Please read this instruction manual carefully before using this instrument as it provides the necessary information
for correct use of this instrument as well as a precise idea of its versatility.
This release of the product manual contains information that applies to configuration, specification, installation,
and calibration of Hanna Instruments industrial conductivity probes.
The HI510 controller is sold separately. Please refer to the controller manual for details on system configurations.
If you need additional technical information, do not hesitate to e-mail us at [email protected].
Visit www.hannainst.com for more information about Hanna Instruments and our products.

3 Preliminary Examination
1. PRELIMINARY EXAMINATION
Remove the probe from the packing and examine it carefully.
Each probe is supplied with quick reference guide and probe quality certificate.
HI7630-28 two-ring probes are supplied with a protective cap on. Remove the cap prior to use.
HI7630-48 four-ring probes are fitted with a plastic support bung located at the end of the probe. Remove
the bung prior to use.
Note: Save all packing material until you are sure that the probe works correctly. Any damaged or defective item
must be returned in its original packing material with the supplied accessories.
2. SAFETY MEASURES
General Safety & Installation Recommendations
• Electrical connection, installation, operation, and maintenance must be carried out by specialized
personnel only.
The specialized personnel must read, understand, and adhere to the instructions in this manual.
• Before connecting the probe to the process controller, disconnect the controller from the power line.
• User serviceable connections are all accessible inside controller’s enclosure.
• Before powering the controller, verify the probe wiring has been done following the instructions
detailed in this manual.
3. GENERAL DESCRIPTION & INTENDED USE
HI7630-28 and HI7630-48 are Conductivity and Temperature probes designed to be paired with the
HI510 Universal Process Controller.
The probes are recommended for a wide range of water applications, from pure and ultrapure water (two-ring
series i.e. HI7630-28) to industrial process water (four-ring series i.e. HI7630-48 ).
The two-ring probes can be calibrated using a standard with a value close to the measurement value whereas the
four-ring probes provide stable measurements over a wide measure range and do not require frequent calibrations.
An integral temperature sensor measures the process temperature and adjusts the measured conductivity to
a reference temperature by applying specialized compensation standards:
• Linear: appropriate when it is assumed that the temperature coefficient of variation has the same value
for all measurement temperatures.
• Standard: appropriate for high-purity water measurements and documented in ASTM Standard D5391-14.
This setting should be used for resistivity measurements.
• Natural: appropriate for natural ground, well, or surface water (or water with similar composition) in
accordance with ISO7888 standard.
The result is reliable electrolytic conductivity (EC), TDS (Total Dissolved Solids), resistivity, or Seawater Salinity
in percent, psu, or ppt units.

Main Features 4
TDS is a calculated value based on the conductivity of the solution (TDS = factor x EC25). A TDS factor is a
conversion factor used to change an EC measurement to a ppm measurement.
Sal psu: The practical salinity of seawater relates the ratio of electrical conductivity of a normal seawater sample
at 15 ºC and 1 atmosphere to a potassium chloride solution (KCl) with a mass of 32.4356 g/Kg water at the
same temperature and pressure. Under these conditions the ratio is equal to 1 and S=35. The practical salinity
scale may be applied to values 0 through 42.00 psu at temperatures between 0 to 35 ºC.
Sal ppt: measurements expressed in ppt are based on the Natural Seawater Scale that extends from 0.00 to
80.00 g/L and covers 10 to 31 °C temperature range. It determines the salinity based upon a conductivity ratio
of sample to standard seawater at 15 °C and an approximate salinity value of 35 in seawater.
Sal %: in this scale 100% salinity is equivalent to roughly 10% solids.
The conductivity probes can be installed directly in-line, immersed in a tank, or in a flow cell, and are suited
for continuous measurement of conductivity and associated parameters required in applications such as water
treatment, drinking water, feed water condensate, or other clean water applications as well as sea water and
surface-water monitoring.
The probe is available with an integral connector that permits connections with no twisted cables as cables
are connected after installation.
Patch cables may be purchased separately to connect between the probe and controller up to 50 meters (164 ft).
4. MAIN FEATURES
• Rugged, chemically-resistant PVDF body
• 3/4” NPT external thread for mounting
• 6 bar (87 psi) maximum pressure at 25 °C (77 °F)
• Digital probe stores model, firmware, serial number, and calibration information
5. SERIES CONFIGURATION
HI7630 –y8z z
y
2Two-electrode cell conductivity, AISI 316 stainless steel
cellconstantk≈0.1/cm
4Four-ring conductivity, platinum on glass
cellconstantk≈1.0/cm
8Smart probe with RS485 connection
zz 00 supplied with DIN connector (without cable)*
05, 10, 15, 25, 50 fixed cable length (in meters)
* See Accessories section for patch cable ordering codes.

5 Specications
6. SPECIFICATIONS
HI7630-28zz Two-Electrode Probe
Range
EC 0.000 µS/cm to 30.00 mS/cm*
TDS 0.000 mg/L to 15.00 g/L (TDS factor 0.5)*
RES 34Ω•cmto99.99MΩ•cm*
Resolution**
EC 0.001, 0.01, 0.1 µS/cm;0.001, 0.01 mS/cm
TDS 0.01, 0.1 ppm;0.001, 0.01, 0.1 g/L
RES 1Ω•cm;0.01,0.1,1kΩ•cm;0.01MΩ•cm
Accuracy EC ± 2 % of reading or ±0.050 µS/cm, whichever is greater
TDS ± 2 % of reading or ±0.025 mg/L, whichever is greater
Calibration Standard Automatic, two-point with standard solution
Process Single point
Temperature
Range 0.0 to 50.0 °C (32.0 to 122.0 °F)
Accuracy ± 0.5 °C ; ± 1.0 °F
Calibration Single point offset (controller setting)
Temperature
compensation mode Linear, Natural, Standard, None
Temperature source Automatic (from probe)
Manual
Body PVDF
Sensor
Type Two-electrode, concentric cylinder design
Material AISI 316 stainless steel
Insulator PVDF/Silicone
Diameter 10 mm (0.4”)
Insertion length 23 mm (0.9”)
Maximum pressure 6 bar (87 psi)
Threaded connection 3/4” NPT external thread for mounting
Protection rating IP68
Cable length zz , see Series Configuration
* Absolute values (not temperature compensated)
** Automatic ranging

Specications 6
HI7630-48zz Four-Ring Probe
Range
EC 0.0 µS/cm to 999.9 mS/cm*
TDS 0.0 mg/L to 400.0 g/L (TDS factor 0.5)*
RES 1.00Ω•cmto9.99MΩ•cm*
Seawater Salinity 400.0 %NaCl, 42 psu, 80 ppt
Resolution** EC 0.1 µS/cm; 0.001, 0.01, 0.1 mS/cm
RES 0.1,1Ω•cm;0.01,0.1,1kΩ•cm,0.01MΩ•cm
Accuracy EC ± 2 % of reading or ±1 µS/cm, whichever is greater
TDS ± 2 % of reading or ±0.5 mg/L, whichever is greater
Calibration
Standard Automatic, two-point with standard solution
Salinity Single point with standard solution
Resistivity Single point
Process Single point
Temperature
Range 0.0 to 100.0 °C (32.0 to 212.0 °F)
Accuracy ± 0.5 °C; ± 1.0 °F
Calibration Single point offset (controller setting)
Temperature
compensation mode Linear, Natural, Standard, None
Temperature source Automatic (from probe)
Manual
Body PVDF
Sensor
Type Four-ring, platinum
Insulator Glass
Diameter 12 mm (0.5”)
Insertion length 50 mm (2”)
Maximum pressure 6 bar (87 psi)
Threaded connection 3/4” NPT external thread for mounting
Protection rating IP68
Cable length zz , see Series Configuration
*Absolute values (not temperature compensated)
**Automatic ranging

7 Probe Dimensions & Cable Connection
7. PROBE DIMENSIONS & CABLE CONNECTION
Two-Electrode Probes
HI7630-28zz
Ø 28.4 mm (1.1”)
3/4’’ NPT
Ø 10 mm (0.4”)
45 mm (1.8”)
23 mm (0.9”)
189 mm (7.4”)
HI7630-2800
189 mm (7.4”)
Four-Ring Probes
HI7630-48zz
Ø 28 mm (1.1”)
72 mm (2.8”)
50 mm (2”)
Ø 12 mm (0.5”) 3/4’’ NPT
216 mm (8.5”)
HI7630-4800
216 mm (8.5”)
Align the pins and key then push the plug into the socket.
Rotate the collar to lock in place.
Note: Probe connection (probe with integral DIN connector) and probe wiring (probe with attached cable) must be
carried out with the controller disconnected from power.

Installation 8
8. INSTALLATION
General considerations
• Probes are easily installed using the 3/4” NPT external thread.
• Hand tighten the probe in position. Then, depending on the process, tighten one or two turns with a wrench
to secure in place. Do not exceed 10 N•m (7.3 lb-ft) torque specification for the probe sensor.
• Provisions must be made for removing the probe from the process.
• Consider probe accessibility for maintenance when selecting placement.
Typical installation examples with mounting accessories
Accessories are sold separately.
In-line mounting and flow-cell installation require that the saddle and flow cell are completely filled with water.
In-line mounting with probe saddle
54
231
1 Pipe
2 Sensor tip
3 Saddle
4 Probe fitting kit
5 Probe
Note: To prevent air entrapment inside the electrode the probe can be rotated and horizontal mounting
is recommended.
Mounting accessories
Pipe size Saddle code HI7630-28zz HI7630-48zz
Ø 50 mm (2”) BL120-550
Ø 63 mm (2 ½”) BL120-563
Ø 75 mm (3”) BL120-575

9 Installation
Installation tee
• Install the probe in a tee, horizontally, and direct the flow into the opening at the bottom of the probe.
• Upward flow direction must always be ensured.
• Maintain a stable flow rate to minimize interferences from bubbles and settling of particulates.
• Wrap Teflon™ tape around the probe’s threads and fittings before mounting.
FLOW
FLOW
1 2 43
1 Tee 3/4” NPT
2 Vent hole
3 O-ring
4 Probe
Tank immersion with submersible electrode holder
I
II
III
1
2
4
3
5
6
7
9
8
1 Probe cable
2 Cable gland
3 Electrode holder cap
4 Adjustable immersion level
5 Electrode holder
6 Probe body
7 O-ring, Ø 22.2 mm (0.87”)
8 Sensor tip
9 Protective end cap
The HI60501/HI60503 (PVC/PVDF submersible holders) together with HI60501-2/HI60503-2 (PVC/PVDF
protective end caps), and HI605011 (mounting flange) provide a sturdy housing that prevents the probe from
being damaged. For high-temperature/complex chemical processes it is recommended the use of PVDF accessories.

Installation 10
To install the probe:
A. Unscrew the protective end cap (9). The cap allows for quick and simple probe maintenance and replacement.
B. Slide out the electrode holder cap (3).
C. Screw the probe into the internally threaded protective cap (9), step I.
D. Screw the probe and protective cap subassembly onto the holder (5), step II.
E. Feed the probe cable through the holder (5) and out through the cap (3) and cable gland on top (2). The
cable is shielded inside the holder to prevent any damage to the insulation.
F. Tighten the cable gland (2), step III, and slide the cap (3) back onto the electrode holder (5).
Flow-cell installation
• Position and orient the probe so that it does not trap air bubbles at the sensing area.
• Do not allow deposits of sediment or other foreign material to accumulate within the sensing area.
TANK
VALVE 1
VALVE 2
FLOWFLOW
INCOMING FLOW
EXIT FLOW
3
12
4
5
7
6
6
FLOW CELL
1 Process controller
2 Wiring cable
3 EC probe
4 Flow-cell adapter
5 Flow cell
6 Flow-cell valves
7 Saddle

11 Wiring the Probe to the Controller
9. WIRING THE PROBE TO THE CONTROLLER
1. With the controller disconnected from power, run the probe cable through the conduit opening.
2. Connect the probe leads to the removable terminal connector marked PROBE. Follow the lead markings
(+) positive / (–) negative to ensure correct wiring position for the output leads.
3. Carefully put the wired terminal connector into place on the board.
4. Position excess cable through the cable gland before tightening the nut.
5. Remove the ground screw and hardware located below the PROBE connector and attach ground lead ( g).
COMM
-BA+
IN1 IN2 A01 A02 A03 A04
PROBE
-BA+
PROBE
-BA+
A+
B
—
Probe cabling color code
Marking Attached cable Patch cable * Functionality
– GREEN BLACK 0V
B WHITE WHITE RS485 D –
A YELLOW BLUE RS485 D+
+ BROWN RED 5V
gGREEN-YELLOW Protective ground connection
* See Accessories section for cable ordering codes.
Note: Ensure wiring regulations are correctly followed when controller unit is part of a larger industrial installation.

Calibration 12
10. CALIBRATION
HI510 controller allows two types of EC calibration procedures:
• Standard two-point conductivity calibration with standards for cell factor determination:
0.000 µS/cm for offset
84.0 µS/cm, 1413 µS/cm, 5.00 mS/cm,12.88 mS/cm for the 0.1/cm cell
80.0 mS/cm, 111.8 mS/cm additional standards for the 1.0/cm cell
• Standard single point salinity calibration in 100% salinity standard, with the controller set to Sal %
measurement mode after the EC range has been calibrated
• Process single point calibration performed with calibrated probes installed in the process
Standard Calibration
Conductivity (EC)
Preparation
• Always clean the probe in distilled water, shake off water droplets, and allow to dry prior to calibration.
• Suspend the probe in the air, use 0.000 µS/cm as first calibration point.
• Use an EC calibration standard with a value that is close to that of the sample.
• Inspect the probe for debris or blockages.
• Ensure that probe’s holes are completely submerged.
• Tap the probe to remove any air bubbles that may be trapped inside the sleeve.
• To minimize cross-contamination, when a two-point calibration is required, use two beakers: one for
rinsing the probe and the other for calibration.
• Go to Probe Settings in Channel Setup and set Meas.Mode to EC.
Procedure
1. Press mdirect key then CAL virtual key. The probe selection must be set to EC.
2. Suspend the probe in the air. Allow for the reading to stabilize.
3. Press CFM when displayed. The first calibration point (Offset calibration) is accepted and saved.
4. Press Next to continue with the second point.
5. Raise and lower conductivity cell in rinse beaker of standard, then discard. Immerse the sensor in EC
standard. The controller will automatically recognize the standard. Allow the reading to stabilize.
6. Press CFM to confirm the second point and save the calibration.
Salinity (HI7630-48 series only)
Salinity calibration can be performed with the controller set to Sal % measurement mode after the EC range
has been calibrated.
1. Press m direct key then CAL virtual key. The controller enters calibration mode.
2. Raise and lower conductivity cell in rinse beaker of salinity standard then discard.
3. Immerse the sensor in salinity standard. The controller automatically recognizes the standard. Allow the
reading to stabilize.
4. Press CFM when displayed to confirm and save the calibration.

13 Measurements in Ultrapure Water
Process Calibration
A process calibration is a single-point calibration performed with the probe installed in the process.
This type of calibration allows the user to adjust the measured EC , resistivity, or seawater salinity value so that
it matches the value determined with a calibrated reference meter.
Preparation
• Use a calibrated reference meter and probe to determine the process EC or Salinity value.
• Select measurement unit.
Procedure
1. Press m direct key then CAL virtual key.
2. Press Process when available.
3. Use ud directional keys to adjust the process value in agreement with the predetermined value.
4. Press CFM to confirm and save calibration.
Note: For process calibration, input reading must be greater than 0.015 µS/cm (1.0%Sal) and Setpoint value
should not be lower than 0.015 µs/cm (1.0%Sal).
11. MEASUREMENTS IN ULTRAPURE WATER
Resistivity is the reciprocal of conductivity, and their scales emphasize different areas of the measurement range.
Resistivity is commonly used in ultrapure water while larger amounts of contaminants are best measured in
conductivity (EC) Meas.Mode. The user can subsequently change Meas.Mode to RES to measure in resistivity
units(MΩ•cm).
Ultrapure water self ionizes into H+and OH-ions and has a conductivity of 0.055 µS/cm or a resistivity of
18.18MΩ•cm at 25 °C. The self-ionization of water is highly temperature dependent.
Recommended temperature compensation setting for these type of measurements (taken with HI7630-28
probes only) is "Standard" as it utilizes the correct compensation algorithm.
Calibration recommendations
• Remove the probe from the process and shake all the water from the probe.
• Wait for moisture to evaporate off the probe before calibration.
• Suspend the probe in the air and use 0.000 µS/cm or 0.0 µS /cm as first calibration point.
• Use 84 µS/cm standard for the best calibration.
Process Calibration (with conductivity calibration completed)
1. Place the cleaned probe in line, in a flowing, gas-free water.
2. Allow the probe to acclimate to the water and temperature of the water.
3. Return the Meas.Mode back to RES.
4. Verify Temp.Comp. is set to Standard. Verify temperature agrees with the reference measurement.
5. Use Temp. Offset to adjust temperature.
The cell may be calibrated using a reference measuring system on site or a traceable plant standard.
6. Press mdirect key then CAL virtual key.

Maintenance 14
7. Press Process when available.
8. Use ud directional keys to adjust the process value in agreement with the standard value.
9. Press CFM to confirm and save calibration.
Installation recommendations
The HI510 controller together with a HI7630-28zz probe is designed to meet the ASTM D5391- 99 requirements
for electrical conductivity and resistivity of flowing high-purity water samples.
• The installation must exclude air contact with the sample.
• Install the probe in a tee, horizontally, and direct the flow into the opening at the bottom of the probe.
Alternatively, the probe can be installed in a flow-cell. See section 8, Installation.
• Maintain flow rate to minimize interferences from bubbles, settling of particulates, and provide a faster
response.
• The probe is specified up to 6 bar @25°C.
12. MAINTENANCE
Rinse the probe thoroughly as water residue may not be visible.
Cleaning
Dirty or improperly cleaned probes can result in erratic and inaccurate readings.
• Remove and inspect the probe during scheduled service intervals.
• Dry clean the sensor with a soft bristle brush to loosen any debris.
For a more thorough cleaning:
• Use a cloth and warm water with a soapy surfactant to clean and follow with a thorough rinse with
purified (deionized) water. Ensure that the holes and cell channel in the sensor are free of foreign material.
• Flush with purified water after cleaning.
Four-ring probe cleaning
• Remove and inspect the probe during scheduled service intervals.
• Clean off the external sheath with a soft cloth and surfactant solution.
• Rinse the probe under a stream of running tap water to remove salt or minerals.
Jet the tap water stream through the opening to dislodge any debris.
• If strictly necessary, carefully remove the outer plastic sheath to disassemble the probe.
Clean with a warm water/surfactant mixture and follow with a through rinsing with purified water.
Allow pieces to dry and reassemble.
Calibrate the probe with the appropriate buffer for the intended application.
Storage
• Store the probe dry, after cleaning in distilled water.
• Clean the probe and calibrate after long-term storage.

15 Accessories
13. ACCESSORIES
Ordering Information Product Description
Conductivity Solutions
HI7030M or HI7030L 12880 µS/cm standard solution, 230 or 500 mL
HI7031M or HI7031L 1413 µS/cm standard solution, 230 or 500 mL
HI7033M or HI7033L 84 µS/cm standard solution, 230 or 500 mL
HI7034M or HI7034L 80000 µS/cm standard solution, 230 or 500 mL
HI7035M or HI7035L 111800 µS/cm standard solution, 230 or 500 mL
HI7037M or HI7037L 100 % NaCl seawater salinity standard solution, 230 or 500 mL
HI7039M or HI7039L 5000 µS/cm standard solution, 230 or 500 mL
Other Accessories
HI60501 PVC immersion electrode holder
HI60501-0 O-rings for HI60501 electrode holder
HI60501-2 PVC protective end cap, inside height 68 mm (2.6”)
HI60503 PVDF immersion electrode holder
HI60503-2 PVDF protective end cap, inside height 68 mm (2.6”)
HI605011 PVC mounting flange
HI60542 In-line electrode holder, direct pipe installation
HI76510-05 Patch cable, 5 m (16’5”)
HI76510-10 Patch cable, 10 m (32’9”)
HI76510-15 Patch cable, 15 m (49’2”)
HI76510-25 Patch cable, 25 m (82’)
HI76510-50 Patch cable, 50 m (164’)
BL120-400 Flow-cell probe adapter kit
BL120-401 Flow-cell valve
BL120-402 Flow-cell tubing,10 m (32’9”)
BL120-410 Flow cell
BL120-463 Flow-cell kit for Ø 63 mm (2.5”) pipe
BL120-475 Flow-cell kit for Ø 75 mm (3”) pipe
BL120-500 Probe fitting kit
BL120-550 Probe saddle for Ø 50 mm (2”) pipe, 1 ¼” thread
BL120-563 Probe saddle for Ø 63 mm (2.5”) pipe, 1 ¼” thread
BL120-575 Probe saddle for Ø 75 mm (3”) pipe, 1 ¼” thread
For additional accessories information contact your local sales office.

Abbreviations 16
14. ABBREVIATIONS
AISI American Iron and Steel Institute
NPT American National Pipe Standard Taper Pipe Thread
PP Polypropylene
PVC Polyvinyl Chloride
PVDF Polyvinylidene Fluoride
CERTIFICATION
All Hanna®instruments conform to the CE European Directives.
Disposal of Electrical & Electronic Equipment. The product should not be treated as household waste. Instead,
hand it over to the appropriate collection point for the recycling of electrical and electronic equipment, which
will conserve natural resources. Ensuring proper product disposal prevents potential negative consequences
for the environment and human health.
For more information, contact your city, your local household waste disposal service, or the place of purchase.
RECOMMENDATIONS FOR USERS
Before using this product, make sure it is entirely suitable for your specific application and for the environment
in which it is used. Any variation introduced by the user to the supplied equipment may degrade its performance.
Do not use or store the product in hazardous environments.
WARRANTY
The probes are warrantied for six months against defects in workmanship and materials when used for its
intended purpose and maintained according to instructions. This warranty is limited to repair or replacement
free of charge. Damage due to accidents, misuse, tampering, or lack of prescribed maintenance is not covered.
If service is required, contact your local Hanna Instruments
®
office. If under warranty, report the model number,
date of purchase, serial number, and the nature of the problem. If the repair is not covered by the warranty, you
will be notified of the charges incurred. If the instrument is to be returned to Hanna Instruments, first obtain
a Returned Goods Authorization (RGA) number from the Technical Service department and then send it with
shipping costs prepaid. When shipping any product, make sure it is shipped back in compliance with shipping
regulations, thoroughly cleaned and free of any chemicals, and is properly packaged for complete protection.
MAN7630-8 07/22