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USE INSTRUCTIONS AND LIMITATIONS
Each person using this equipment must read and understand the information in these User Instructions before use. Use of this
equipment by untrained or unqualified persons, or use that is not in accordance with these User Instructions, may adversely affect
product performance and result in sickness or death.
USE FOR
The Macurco Hydrogen Gas Detector HD-11 is a low voltage (12-24VAC or VDC) dual relay, hydrogen
detector. The unit is designed to work with control panel or other building management equipment to help
monitor levels of hydrogen gas in a room or a facility where hydrogen gas may be present, for example where
forklifts, backup power supplies, or golf carts battery charging stations are present.
Use only for monitoring the gas which the sensor and detector are designed to monitor. Failure to do so may result in exposures to
gases not detectable and cause sickness or death. For proper use, see supervisor or User Instructions, or call Macurco Technical
Service.
DO NOT USE FOR
The Macurco Hydrogen Gas Detector HD-11 is NOT intended for use in industrial applications such as
refineries, chemical plants, etc. Do NOT mount the HD-11 where the normal ambient temperature is below
40
ºF (4.4ºC) or above 120ºF (49ºC).
The HD-11 mounts on a 4x4 or 2-gang electrical box supplied by the
contractor. DO NOT install the HD-11 inside another enclosure or protective cover unless it has good air flow
through it. The HD-11 is NOT designed to detect smoke, fire or carbon monoxide. Do NOT mount the HD-11 in
a corner.
HD-11 may not function effectively below 32
F or above 120
F. Using the detector outside of this temperature range may adversely
affect product performance and result in sickness or death.
GENERAL DESCRIPTION
The Macurco Hydrogen Gas Detector HD-11 is a low voltage (12-24VAC or VDC) electronic detector of
hydrogen gas. The HD-11 is designed for connection to alarm control panels to help monitor levels of hydrogen
gas. This gas detector is NOT designed to detect smoke, fire or carbon monoxide.
FEATURES
Detects Hydrogen Gas
SPDT Alarm and N.C. Trouble Relays
Can Be Self-Restoring or Latching
Electronic Sensors: No Maintenance or Recalibration
Temperature Compensated
Simple Installation and Operation
Supervised Sensor
SPECIFICATIONS
SIZE: 4 ½ X 5 X 1 5/8 inches
SHIPPING WEIGHT: 0.54 pound
VOLTAGE: 12 to 24 VAC or VDC
CURRENT (non-alarm): 45 ma @ 12 VDC, 22 ma @ 24 VDC, 65 ma @ 12 VAC, 45 ma @ 24 VAC
CURRENT (in alarm): 70 ma @ 12 VDC, 35 ma @ 24 VDC, 100 ma @ 12 VAC, 65 ma @ 24 VAC
! WARNING
! WARNING
! WARNING
