Specifications; General Information - Hach DR 900 User Manual

Table of contents
Specifications on page 3
General information on page 3
Installation on page 6
User interface and navigation
on page 8
Startup on page 9

Specifications

Specifications are subject to change without notice.
Specification Details
Measurement mode Transmittance (%), Absorbance (Abs) and
Concentration (Conc)
Dimensions (W x D x H) 23.6 x 8.7 x 4.7 cm (9.3 x 3.4 x 1.9 in.)
Enclosure rating IP67
Weight 0.6 kg (1.3 Ib)
Power requirements (internal) AA Alkaline batteries (4x)
Battery life 6 months (typical) at 5 readings a day/5 day
week without the backlight
Interface USB mini
Operating temperature 0 to 50 °C (32 to 122 °F), maximum 90% relative
humidity non-condensing
Storage temperature -30 to 60 °C (-22 to 140 °F), maximum 90%
relative humidity non-condensing
Lamp source Light emitting diode (LED)
Detector Silicon photodiode
Standard operation on page 10
Advanced operation on page 12
Maintenance on page 15
Troubleshooting on page 16
Replacement parts and accessories
on page 16
Specification Details
Wavelength range 420, 520, 560, 610 nm
Photometric measuring range 0-2 Abs
Wavelength accuracy ±1 nm
Photometric accuracy ±0.005 Abs at 1.0 Abs nominal
Photometric linearity ±0.002 Abs (0-1 Abs)
Wavelength selection Automatic, based on the method selection
Photometric repeatability ±0.002 Abs (0-1 Abs)
Data readout Graphical display, 240 x 160 pixel (backlit)
Sample cells 16 mm, 1 cm/10 mL, 1-inch (25 mm) round
Protection class Class III
Certifications CE certified
Warranty 2 years

General information

In no event will the manufacturer be liable for direct, indirect, special,
incidental or consequential damages resulting from any defect or
omission in this manual. The manufacturer reserves the right to make
changes in this manual and the products it describes at any time, without
notice or obligation. Revised editions are found on the manufacturer's
website.
Safety information
N O T I C E
The manufacturer is not responsible for any damages due to misapplication or
misuse of this product including, without limitation, direct, incidental and
consequential damages, and disclaims such damages to the full extent permitted
under applicable law. The user is solely responsible to identify critical application
risks and install appropriate mechanisms to protect processes during a possible
equipment malfunction.
English 3