HI981520 Marine Monitor pH, Marine Salinity, and Temperature

HI981520 Marine Monitor pH, Marine Salinity, and Temperature

View QuoteBuy

Can we help you?

Marine Monitor

pH, Marine Salinity, and Temperature

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

Ordering Information

HI981520-01 (115 VAC) and HI981520-02 (230 VAC) 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.

Specifications ( model: HI981520 )
Range*0.0 to 14.0 pH
Resolution0.1 pH
Accuracy±0.2 pH
Calibrationmanual or automatic two-point calibration in 7.01 and 10.01 pH
Range0.0 to 70.0 ppt (g/L)
Resolution0.1 ppt (g/L)

±1.0 ppt between 0.0 ppt and 40.0 ppt

±2.0 ppt between 40.0 ppt and 70.0 ppt

Calibrationautomatic, single point in 35.00 ppt
Range0.0 to 70.0 PSU
Resolution0.1 PSU

±1.0 PSU between 0.0 and 40.0 PSU

±2.0 PSU between 40.0 and 70.0 PSU

Range1.000 to 1.041 S.G.
Resolution0.001 S.G.
Accuracy±0.001 S.G.
Range0.0 to 50.0 °C (32.0 to 122.0 °F)
Resolution0.1 °C / 0.1 °F
Accuracy±0.5 °C / ±1.0 °F
CompensationAutomatic, 5 to 50 °C (41 to 122 °F)
pHHigh or Low with Enable or Disable option
ECHigh or Low with Enable or Disable option
TemperatureHigh or Low with Enable or Disable option
High/Low Value : with High/Low alarm Enabled
pHHI1286 double junction pH electrode with 2 m (6.6’) cable
Power Supply12 Vdc adapter (included) from 115 Vac, and 230 Vac
Environment0 to 50°C (32 to 122°F); RH max 95%, non-condensing
CasingIP65 ingress protection
Dimensions125 x 185 x 38 mm (4.92 x 7.28 x 1.49”)
Weight300 g (10.6 oz)

* The range may be limited by the probe’s limits.