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Honeywell HA20 AND HA40 Gas Detection Controllers

Gas Detection Controllers
HA20 AND HA40

The HA20 and HA40 controllers are designed to provide simultaneous display and alarm functions for two or four 4-20mA sensor transmitters. The 4-20mA inputs are standard equipped and ideal for interfacing to sensor transmitters that may be long distances from the controller.

HA20 and HA40 controllers are also user friendly and easy to configure. A Graphic LCD Display shows monitored data as bar graphs, 30 minute trends and engineering units. A touch-and-magnetic keypad allows for non-intrusive operation in potentially hazardous locations. Cal Mode offers push button zero /span calibration for direct sensor interface applications. Authorization Mode allows locking of critical configuration variables.

Measurement ranges in engineering units, adjustable alarm set-points, optional serial interfaces, and many other features offer flexibility to meet most demanding applications. Relay outputs allow control of beacons, horns and other alarm events. Three adjustable alarm levels are provided per channel. Two standard SPDT common alarm relays are for HORN, HIGH, WARN or FAULT alarm conditions.

These controllers meet and exceed national, state and local safety regulations. Even the low-cost NEMA 4X model is CSA certified, CSA certified to C22.2 NO. 152 for combustible detection and Class I, Div. 2, Groups A,B,C,D CE mark NEMA 4X (Div. 2 certified).Explosion-Proof wall mount packaging options are also available.

Other HA40 options include an RS-485 Modbus slave port that allows up to 128 HA40’s to be multi-dropped onto a single data highway for interrogation by another Modbus master; choice of six programmable 5 amp SPDT discrete alarm relays; 4-20mA outputs; light stacks; and audible enunciators. HA20 options include 5 amp SPDT discrete alarm relays per channel; 4-20mA outputs; light stacks; and audible annunciators.

Enhanced Technology
• Accepts inputs from up to two (HA20) or four (HA40) 4-20mA sensors transmitters. Internal power supply generates 24VDC and provides 15 watts total system power; optional 50 watts supply available.
• CSA certified to C22.2 NO. 152 for combustible detection and Class I, Div. 2, Groups A,B,C,D CE mark
• 3 independent alarm levels per channel. Relay Acknowledge feature allows silencing of external audible devices during existing alarm conditions
• Graphic LCD readout displays monitored data as bar graphs, trends and engineering units. Alarm LED’s flash when new and become steady after acknowledged
• Two standard SPDT common alarm relays for HORN, HIGH, WARN or FAULT

Beneficial Options
• Optional discrete channel alarm relays are available
• Options such as Modbus slave RS-485 serial port, data logging, 4-20mA outputs, discrete alarm relays and others are supported
• Cal Mode offers push button zero/span calibration for direct sensor interface applications. Authorization Mode allows locking of critical configuration variables
• Touch & magnetic keypad for non-intrusive operation in potentially hazardous locations
• NEMA 4X (Div. 2 certified) and Explosion-Proof wall mount packaging options available.

General Specifications
Use Wall or rack/panel mountable digital gas controller for industrial or commercial use
Display 128 x 64 pixel graphic LCD with backlight displays, bar graphs, trends and engineering units
Common Alarm Relays (standard) Two, 5 amp 30VDC or 250VAC resistive Form C
Discrete Alarm Relays (OPTIONAL Six 5 amp 30VDC or 250VAC resistive Form C
Analog Output (Optional) 10 bit 4-20mA output. Max load 800 ohms with nominal 24VDC power supply
Serial Port (Optional) Slave RS-485 port equipped with Tx / Rx LED’s Protocol = Modbus RTU
Power Requirement 100-240 VAC / 24 VDC are standard primary power supplies
Operating Temperature Range (-25 °C to +50 °C)
Housing Options

NEMA 4X / IP66 wall mount approved for Div 2

NEMA 7 explosion-proof wall mount Div 1 & 2

NEMA 4X SS Enclosure wallmount approved for Div 2

Weight NEMA 4 = 5 pounds, NEMA 7 = 40 pounds
Warranty 2 Years Limited
HA20 & HA40 Wireless Options
Use An optional HA40 900MHz wireless interface (10-2454) can be used to communicate with an HA71 master Modbus controller. An additional 900MHz wireless adapter is also required for the HA71 (10-0288).
Ratings and Certifications
Certified to CSA C22.2 No. 1010.1 & ISA S82.02; UL 1604 / C22.2 No 213 (NEMA 4X = Div 2 Groups A, B, C, D, NEMA 7 =
Groups B, C, D); EN55011 & EN61000.


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