The HA40 digital gas controller
provides simultaneous display and alarm functions for four sensor
transmitters, along with user-friendly operation and configuration
flexibility.
The HA40 accepts sensor inputs for
gas concentration and other atmospheric data. It can function as a
standalone device or can be integrated into a fire and gas system. The
controller features NEMA4X enclosures and meets Class I, Div. 2, Groups
A,B,C,D requirements. Explosion-proof wall mount packaging options are
also available.
The controller features a large,
graphic LCD readout that displays monitored data as bar graphs, trends
and engineering units. A touch-and-magnetic keypad allows for
non-intrusive operation in potentially hazardous locations. Cal Mode
offers pushbutton zero/span calibration for direct sensor interface
applications. Authorization Mode allows locking of critical
configuration variables.
Other standard features include Modbus TCP/IP communications, three
independent alarm levels per channel, alarm relays, flexible mounting
options and 4-20m inputs. The 4-20mA inputs are ideal for interfacing to
sensor transmitters that may be long distances from the controller. 24
VDC @ 8 watts provides external device power. The controllers accept
inputs from two local
