Dissolved oxygen (DO) transmitter
DL424/DL425 Honeywell Process Solutions

Honeywell's DirectLine® transmitter modules are the next generation family of analytical transmitters. Unique architecture in the DirectLine transmitters combines the latest in microelectronics technology with the proven performance of Honeywell's unique sensing technologies; providing unequaled savings during installation, startup, operation and maintenance. For dissolved oxygen measurement the DirectLine transmitter modules can be mounted integrally or remotely with the DL5000 probe.

The DirectLine architecture consists of an electronics transmitter module and a sensor which may be mounted integral to the transmitter or remotely eliminating the need and added cost of a separate analyzer or transmitter. The transmitter modules are intrinsically safe, in a weatherproof, corrosion-resistant sealed composite enclosure.

Completing the system is a unique Honeywell sensor connected to the sensor side of the transmitter and a 4-20 mA weatherproof output cable on the power/output side. The transmitter is design for outside use in harsh environments where moisture, dust and chemical attack may be present. For submersion or special mounting applications, a remote mounting option is available which connects the electronics module to the DO probe via a cable. The module can be mounted on a 2-inch pipe, wall or DIN rail.