Hansen HLM2 Manual

Standard Gas Sensor Standard Gas Sensor
INTRODUCTION
Hansen Technologies offers a complete line of industrial
quality Gas Detection Sensors, Monitors and Alert
Systems for refrigerants and other common gases.
These state-of-the-art gas detection products utilize a
range of sensing technologies to suit a given application.
Available in several configurations to meet various
application requirements with optimum accuracy and
reliability.
APPLICATIONS
Hansen Gas Sensors are suitable for use in industrial
refr iger ation engine rooms, cold stor age rooms,
processing rooms, truck docks, and for relief valve vent
lines. They are also suitable for use in supermarkets,
and large institutional and commercial buildings.
Typical gas detection applications include Ammonia,
Carbon Dioxide (CO2), Hydrocarbons, HFCs, HCFCs
and CFCs.
ADVANTAGES
Hansen uses a wide variety of sensing technologies
including electrochemical, semiconductor and infrared
sensors to selectively detect most gases. These sensors
continuously determine the level of gas present in the
surrounding environment. The analog outputs (4-20mA
or 0-10V DC) can interface with nearly any existing
monitor, computer or PLC controller.
The sensing elements (except Basic and Extreme Gas
Sensors) are mounted externally on the enclosure. This
helps to provide quick response to potential leaks,
particularly in still air. Electronics are sealed in a NEMA4
enclosure (except Basic Gas Sensor) which protects them
from moisture, dust and the surrounding gases, which in
the case of ammonia can shorten the life of electronics.
The sensing elements are easily replaced.
Gas Sensors have built-in visual and audible alarms.
An auxiliary one amp SPDT relay output is standard.
Testing and recalibration procedures are simple.
Specifications, Applications,
Service Instructions & Parts
GAS DETECTION
SENSORS, MONITORS
& ALERT SYSTEMS
For Refrigerants and
other Common Gases
KEY FEATURES–GAS SENSORS
• Accurate, fast responding
• Linear 4-20mA or 0-10V DC output
• Audible alarm
• Power indicator
• SPDT alarm relay (Fail Safe Operation)
• 24V AC/DC low voltage power
• Shipped factory calibrated and tested
• CE approved
KEY FEATURES–MONITORS
• Visual alarm
• Audible alarm
• Power indicator
• Low level alarm relay
• High level alarm relay
• Fault relay (HLM6 only)
• Economical
• CE approved
KEY FEATURES−GAS ALERT SYSTEM
• Provides local display and alarm based on
measured target gas level via gas sensor
• Visual alarm, Amber LED light
• Audible alarm (mutable)
• Power indicator, Green
• Numeric PPM reading
• Bright LED Display
• Shipped factory calibrated and tested
Bulletin A100b
JAN 2009