Hach DR300 Service Manual

Step Description Picture
4 Stick at a new top housing the correct parameter label (self-
adhesive).
5 Stick the window (self-adhesive) bubble-free on the housing.
Note: Proper bonding is important for IP67 waterproof.
6 To reassemble the instrument, install display, keypad, optical
unit and mainboard. Close the instrument.
Note: Coat the seal groove with Krytox oil.
Note: Make sure that the screws are tightened to 0.8 Nm.
5.7 Replace the battery contacts
Items to collect:
• Battery contacts
Repairs
49

Hach DR300 Specifications

General

Type	Portable Spectrophotometer
Operating Temperature	0 to 50 °C
Method	Pre-programmed methods
Light Source	LED
Wavelength Accuracy	±2 nm
Resolution	0.001 Abs
Display	LCD
Measurement Method	Absorbance
Parameter	Various
Photometric Range	0 to 2.5 A
Dimensions	230 x 93 x 280 mm (9.1 x 3.7 x 11.0 in)
Photometric Accuracy	±0.005 Abs