HANNA instruments HI981520 Marine Monitor Instruction Manual

: June 16, 2024
: HANNA instruments

Table of Contents

HI981520 Marine Monitor
Features
High/Low Alarms
Seawater Salinity
Installation
Supplied Option
HI981520 Specifications
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

HI981520
Marine Monitor
pH, Marine Salinity, and Temperature

HI981520 Marine Monitor

Testing and monitoring salinity in saltwater aquariums is an ongoing task.
The HI981520 is an easy to use vertical mount unit that continuously monitors and displays conductivity and pH.
The system can be calibrated at one or two points for pH and at one point for conductivity.
Seawater salinity is expressed in either parts per thousand (ppt), Practical Salinity Units (PSU), or Specific Gravity (S.G.).
A high/low alarm can be configured for each parameter and the results are displayed on a large, easy to read LCD.
The attached two-electrode conductivity probe features a built-in temperature sensor for rapid, high-accuracy temperature readings.
The Hanna HI1286 pH double junction, gel-filled pH electrode features a PEI resin body that is easy to clean and resistant to many aggressive chemicals.
Additionally, the double junction design is less susceptible to clogging for fast and stable readings.

Waterproof
Automatic temperature compensation (ATC)
Dual pin graphite EC probe

Features

Backlit LCD
Easy to read backlit LCD display with the optioto change LCD color from the setup menu

Automatic Calibration
A one or two-point pH calibration can be performed using one of the two standard buffer solutions: 7.01 or 10.01pH.
A one-point conductivity calibration can be performed using 35.00 ppt salinity standard solution.
CAL Tags display in measurement mode after a calibration has been performed for visual reminder.

Automatic Temperature Compensation
All readings are compensated for variations in temperature and can be displayed with temperature values in °C or °F.
Choose °C or °F measurement through the setup menu.

High/Low Alarms

Alarm Setup
High/Low alarms can be set for each supported parameter (or can be disabled) quickly through the setup menu.

Alarm State
Alarms are generated when measured value exceeds or drops below configured parameter High/Low Value.

Optional Acoustic Alarm
An acoustic signal can be generated each time an alarm is triggered and can be silenced at the touch of a button. Enable or disable this feature easily through the setup menu.

Seawater Salinity

Choice of Units
Seawater salinity units can be chosen through the setup menu.

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.

PSU
The practical salinity of seawater relates the ratio of electrical conductivity of a normal seawater sample at 15 °C 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 °C.

Specific Gravity (S.G.)
Specific Gravity, or relative density, is expressed as the ratio of the density of seawater, at a specific temperature, relative to the density of the same volume of pure water at a specific temperature.
The probes are secured with suction cups to the back of an aquarium (tank) and are suited for continuous measurement of conductivity and associated parameters required in applications such as seawater, saltwater aquariums, or aquaculture.

Installation

Supplied Option

The probes can be installed/immersed directly in a tank or aquarium (with supplied suction cups) and are suited for continuous measurement of conductivity and associated parameters required in applications such as seawater, saltwater aquariums, or aquaculture.
Each probe features a 2 m (6.6’) cable length for extended distances between monitor and sample.

User Supplied Option
Alternatively, the monitor can be secured using the screw mount option (user supplied hardware).

HI981520 Specifications

pH

| Range*| 0.0 to 14.0 pH
---|---|---
Resolution| 0.1 pH
Accuracy| ±0.2 pH
Calibration| Manual or automatic two-point calibration in 7.01 and 10.01 pH
ppt

| Range| 0.0 to 70.0 PSU
Resolution| 0.1 PSU
Accuracy| ±1.0 PSU between 0.0 and 40.0 PSU
±2.0 PSU between 40.0 and 70.0 PSU
S.G.

| Range| 1.000 to 1.041 S.G.
Resolution| 0.001 S.G.
Accuracy| ±0.001 S.G.
Temperature

| pH| HI1286
EC| Attached
Power Supply| | 12 Vdc adapter (included) from 115 Vac, and 230 Vac
Environment| | 0 to 50°C (32 to 122°F); RH max 95%, non-condensing
Casing| | IP65 ingress protection
Dimensions| 125 x 185 x 38 mm (4.92 x 7.28 x 1.49”)
Weight| 300 g (10.6 oz)|
Ordering Information| HI981520 Marine Monitor is supplied with HI1286 pH electrode; attached EC and temperature probe; pH 7.01 buffer solution, 20 mL sachet (2 pcs.); pH 10.01 buffer solution, 20 mL sachet (2 pcs.);
35.00 ppt salinity calibration solution, 20 mL sachet (2 pcs.); electrode cleaning solution, 20 mL sachet (2 pcs.); suction cup with clip 2 pcs.); self-adhesive fastener (2 pcs.); 12 Vdc power adapter;
quick reference guide with QR code for manual download and instrument quality certificate.
Solutions and Accessories| HI1286 Double junction pH electrode with 2 m (6.6’) cable
HI70007P pH 7.01 solution, 20 mL sachet (25 pcs.)
HI7007M pH 7.01 solution, 230 mL bottle
HI70010P pH 10.01 solution, 20 mL sachet (25 pcs.)
HI7010M pH 10.01 solution, 230 mL bottle
HI70024M 35.00 ppt salinity calibration solution, 230 mL bottle
HI70024P 35.00 ppt salinity calibration solution, 20 mL sachet (25 pcs.)
HI70300M Storage solution for pH electrodes, 230 mL bottle
HI700601P General purpose cleaning solution, 20 mL sachet (25 pcs.)
HI7061M Cleaning solution for pH electrodes, 230 mL bottle
HI1286 Double junction pH electrode with 2 m (6.6’) cable

HI1286 pH Probe Specifications

Range	0 to 13 pH
Recommended operating temperature	0 to 80 °C (32 to 176 °F)
Body	PEI
Junction	PTFE
Reference	Double junction, Ag/AgCl
Electrolyte	Polymer
Tip	Spheric / Ø 7.5 mm (0.29”)
Outer Diameter	12 mm (0.47”)
Overall Length	160 mm (6.29”)
Maximum pressure	3 bar (44 psi)
Cable	Coaxial, 2 m (6.56’)
Connection	BNC

EC and Temperature Probe Specifications

Range| 0.0 to 70.0 ppt
0.0 to 70.0 PSU
1.000 to 1.041 S.G.
---|---
Recommended operating temperature| 0 to 50 °C (32 to 122 °F)
Body| Polypropylene (PP)
Conductivity sensor| Material: ABS Electrode: Graphite
Temperature sensor| AISI 316 stainless steel
Outer Diameter| 12.50 mm (0.49”)
Overall length| 155 mm (6.10”)
Maximum pressure| 3 bar (44 psi)
Cable type/length| Coaxial / 2 m (6.56’)
Connection| Fixed (to the monitor)

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