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AMMONIA GAS DETECTOR
OPTION: AD-1-H
detector with an operating temperature range of 0 to 150°F.
AD-1 CONNECTIONS
TYPICAL AD-1 SYSTEM
AD-1
* WIDE OPERATING TEMPERATURE RANGE: -40 TO 100°F
* ELECTRONIC SENSOR: NO MAINTENANCE REQUIRED
* ADJUSTABLE SET POINT: 25 TO 275 PPM AMMONIA
* WIDE POWER SUPPLY RANGE: 10 TO 26 VAC OR VDC
* SIMPLE INSTALLATION AND OPERATION
* CONNECTS TO CLASS A & B PANELS
* FAIL SAFE SYSTEM EXPLOSION PROOF DESIGN:
IGNITION PROTECTED
* COST EFFECTIVE
INTERFERENCES
When the AD-1 is set to 100 ppm, the following approx. gas levels
can cause an alarm:
NATURAL (METHANE): 10,000 ppm
PROPANE, BUTANE, LP: 4000 ppm
CARBON MONOXIDE: 600 ppm
HYDROGEN: 100 ppm
ETHYLENE OXIDE: 100 ppm
REFRIGERANT R-11: 10,000 ppm
REFRIGERANT R-12: 10,000 ppm
REFRIGERANT R-22: 1000 ppm
REFRIGERANT R-502: 1000 ppm
NOTE: Ammonia is lighter than air: Mount AD-1 high.
SPECIFICATIONS
SIZE: 4
1 1
1 2

x 4
1 1
1 2

x 2 inches
SHIPPING: one pound
VOLTAGE: 10 to 26 VAC or VDC
CURRENT DRAW: 83ma @ 12V, 41ma @ 24V
SENSOR MAINTENANCE: none required
COLOR: White
ALARM SET POINT: 25 to 275 ppm Ammonia
AD-1 TEMPERATURE RANGE: -40 to 100°F
AD-1-H TEMPERATURE RANGE: 0 to 150°F
RELAY: 1A, 125V, 30VA, SPDT, Dry Contacts
RESPONSE TIME: 3 minutes
SENSOR LIFE: 7 to 10 years
NOTE:
1. Space the AD-1s the same as smoke detectors: 30 foot centers, 900 square feet per unit.
2. The AD-1 meets OSHA and ACGIH standards for exposure to ammonia. Set the control as needed. MANUFACTURED BY:
DISTRIBUTED BY:
7/95
7
7
3946 S. Mariposa Street
Englewood, Colorado 80110
(303) 781-4062 FAX # (303) 761-6640
www.macurco.com
AMMONIA GAS DETECTOR
OPTION: AD-12-H
detector with an operating temperature range of 0 to 150°F.
AD-12 CONNECTIONS
TYPICAL AD-12 SYSTEM
AD-12
* CONNECTS TO ALARM CONTROL PANELS
* TWO RELAYS AT TWO LEVELS OF DETECTION
* WIDE POWER SUPPLY RANGE: 10 to 26 Vac or Vdc
* EXPLOSION PROOF DESIGN: IGNITION PROTECTED
* WIDE OPERATING TEMPERATURE RANGE: -40 to 100°F
* MAINTENANCE FREE ELECTRONIC SENSOR, SUPERVISED
* SMALL, COMPACT, MOUNTS ON 4 X 4 ELECTRICAL BOX
* STANDARD CALIBRATION: 25 & 100 ppm (Parts Per Million)
* SPECIAL CALIBRATIONS ARE AVAILABLE
INTERFERENCES
If the AD-12 were set to 100 ppm, the following approx. gas
If
If
levels can cause an alarm:
NATURAL GAS (METHANE): 10,000 ppm
PROPANE, BUTANE, LP: 4000 ppm
CARBON MONOXIDE: 600 ppm
HYDROGEN: 100 ppm
ETHYLENE OXIDE: 100 ppm
R-11: 10,000 ppm
R-12: 10,000 ppm
R-22: 1000 ppm
R-502: 1000 ppm
NOTE: Ammonia is lighter than air: Mount AD-12 high.
SPECIFICATIONS
SIZE: 4
1 1
1 2

x 4
1 1
1 2

x 2 inches
SHIPPING: one pound
VOLTAGE: 10 to 26 Vac or Vdc
POWER: 1.0 VA
COLOR: White
ALARM SET POINTS: 25 & 100 ppm ammonia
RELAY MAX. RATING: 1 AMP, 125 V, 30 VA
RELAY TIME DELAY: One minute
REPLAY CONTACTS: Two, dry, SPDT
OPERATING TEMP. RANGE: -40 to 100°F
DETECTOR SPACING: 30 feet, 900 square feet
CONNECTIONS: 8 @ number 20 wires
RESPONSE TIME: 3 Minutes
NOTE: The standard calibration for the AD-12 complies with all standards set by ACGIH (American Conference of
Governmental Industrial Hygiensts) and OSHA.
POWER
LOW RELAY
SPDT
HIGH RELAY
SPDT
RED
RED
ORANGE N.C.
BLUE COM
BROWN N.O.
Ogr/Wt N.C.
Blue/Wt COM
Brn/Wt N.O.
AD-12
RED
Transformer
RELAY
30 VA COIL
ALARM
CONTROL
PANEL
RED
BLUE COM
BROWN N.O.
Blue/Wt COM
Brn/Wt N.O.
AD-12
POWER
FAN