HL4 Multi-Parameter Water Quality Meter

Home
Hydrolab
Water Quality Dataloggers Field Water Level Sensors
HL4 Multi-Parameter Water Quality Meter

HL4 Multi-Parameter Water Quality Meter

The HYDROLAB HL4 multiparameter sonde is a world class water quality meter suitable for spot check or unattended water quality monitoring.

Versatile and durable, the Hydrolab HL7 has a large sensor suite including:

• Temperature
• Conductivity (EC)
• Salinity (SAL)
• pH
• Oxidation-Reduction Potential (ORP)
• Dissolved Oxygen (LDO)
• Depth
• Turbidity
• Nitrate
• Chloride
• Chlorophyll a
• Blue Green Algae
• Rhodamine
• Ammonia
• Total Dissolved Gas

When measured in real time, results can be viewed on the Hydrolab Surveyor handheld display: Surveyor HL – Aqualab

Designed for water quality professionals, the Hydrolab HL4 is able to thrive in demanding environmental conditions. Bio-fouling is minimized when equipped with the central cleaning brush and performance is maximized with an advanced power management system.

Various cable lengths are available with all Hydrolab HL4 models:

• 2 meter
• 5 meter
• 10 meter
• 15 meter
• 25 meter
• 25 meter
• 30 meter
• 50 meter
• 75 meter
• 100 meter
• 150 meter
• 200 meter

With the following output interface, the Hydrolab HL4 is able to easily integrate into real time telemetry systems:

• SDI-12
• RS-485
• RS-232
• USB

FEATURES

Self-monitoring system reports the status of the instrument, flags the data, and shows the user where the problem is with assistance on how to solve the issue
User-scheduled calibration and maintenance intervals indicate when they are due
Guided and semi-automated calibration routines lead the user through the calibration process
Calibration results are stored with date and time, calibration type, user identification, and user notes
Check Calibration process allows the user to verify calibration and store the results
Calibration reports contain information about previous calibrations and calibration checks
Sensor status is saved with every line of data and is contained in the log file
Dedicated communications modules allow easy integration with data loggers and telemetry systems
Compatible with the Surveyor HL – a fully IP67 handheld designed for field use with a full-color screen that is visible in direct sunlight

Specs

Electrical
Sensors	Temperature sensor and up to four additional sensors plus depth and ORP
External	6 … 30 VDC (12 VDC nominal) applied to the communications module,12 VDC: 250 mW average, 19 W peak
Internal	(Optional) Internal alkaline D-cell battery, non-rechargeable.
Sleep mode at 12 V	20 mA
Communications	Hydrolab communications modules: USB, SDI-12, RS232, RS485, or TTY
Memory	4 GB of internal memory; 1 second interval minimum
User Interface
PC Software	Hydrolab Operating Software
Handheld	(Optional) Hydrolab Surveyor HL
General
Sonde Depth Rating	200 m (656 ft)
Maximum Deployment Cable	200 m (656 ft)
Diameter w/o bumpers	4.4 cm (1.75 in.)
Diameter with bumbers	5.3 cm (2.1 in.)
Weight with internal battery pack (IBP) and storage/calibration cup	2.2 kg (5 lb)
Length – no IBP, standard sensor guard	51.4 cm (20.25 in.)
Length – no IBP, extended sensor guard	66.4 cm (26.125 in.)
Length – IBP and standard sensor guard	62.2cm (24.5 in.)
Length – IBP and extended sensor guard	77.8 cm (30.625 in.)
Environmental conditions
Operating temperature	-5 … 50 °C (23 … 122 °F), non-freezing
Storage temperature	1 … 50 °C (34 … 122 °F)

Downloads