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.
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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