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Gas Monitor 1ACO One-Channel Monitor 

 

 18  

•

  V

alarm 

= (( 25 PPM / 100 PPM) * (1.320V – 0.380V)) + 0.380V 
= 0.615V 

RV5 would be adjusted so that 0.615V is measured at TP5. 
 

+ -

MULTIMETER

DIGITAL

MEASURE VOLTAGE 
AT SIG. TEST PT.
WITH RED (+) LEAD

CONNECT BLACK
( - ) LEAD TO GND.
PAD

TB1

TP7

RV6

RV4

RV5

TP1

TP2

TP3

TP4

TP5

TP6

JB8

JB10

1

R1

 

Figure 9: Trimmer adjustment and test point locations 

 
 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for 1ACO

Page 1: ...allation and operating instructions completely and carefully before starting Filename 3221405A doc Copyright July 2009 AMC The Armstrong Monitoring Corporation 215 Colonnade Road South Ottawa Ontario...

Page 2: ......

Page 3: ...9 4 2 1 MONITOR WIRING 9 4 2 2 AMC S2e Connection 10 4 3 DIP SWITCH PROGRAMMING 11 4 4 ALARM RELAY PROGRAMMING 13 4 5 AUDIO ALARMS 13 5 OPERATION AND CALIBRATION 14 5 1 POWER ON DELAY 14 5 2 TEST SWI...

Page 4: ...Gas Monitor 1ACO One Channel Monitor 2...

Page 5: ...liability is expressed or implied by Armstrong Monitoring Except as set forth herein Armstrong Monitoring makes no warranty expressed or implied with respect to the fitness for any particular purpose...

Page 6: ...40 C 4 F to 104 F Operating Pressure Ambient atmospheric pressure Relative Humidity 35 85 non condensing TORQUE SPECIFICATIONS POWER SUPPLY Neutral terminal screw 7 pound inches Hot terminal screw 7 p...

Page 7: ...re indicated by a red LED Alarm concentrations are indicated in Section 2 4 POWER TERMINAL BLOCK For line voltage connections of 120 VAC 60 Hz 5 TRANSFORMER A Class II step down transformer powers the...

Page 8: ...configure the alarm delay and timer circuits audio alarm activation sensor mode selection fault threshold and acknowledge switch function 12 RELAYS 2 alarm DPDT relays are provided 13 ON BOARD AMC S2e...

Page 9: ...TRIP POINT ADJUSTMENT 7 AUDIO ALARM INDICATOR 5 TRANSFORMER UNDER PCB 11 PROGRAMMING DIP SWITCHES 8 RELAY SETUP JUMPERS 6 INTERNAL WIRING HEADER 4 POWER TERMINAL 13 ON BOARD AMC S2e SENSOR 12 RELAYS B...

Page 10: ...on a solid non vibrating surface or structure Install the unit where it is not exposed to rain or water spray Install in an area where the local concentration of gas is unaffected by the presence of v...

Page 11: ...RELAYS Relays are included with the monitor DPDT relays are used The two relays are set for different alarm conditions The contacts are rated for 10Amps 250VAC resistive For relay contact arrangement...

Page 12: ...gned to plug into the same socket as the solid state sensor Plug the sensor into the socket and ensure the green LED on the AMC S2e illuminates If the green LED does not illuminate unplug and rotate A...

Page 13: ...left position or ON right position depending on functions required Table 1 DIP switch programming chart Switch Feature Position Description OFF Warning and alarm relays are automatically de activated...

Page 14: ...rved OFF The Alarm relay is not activated when fault is detected SW2 1 Alarm Relay Activated when Fault is Detected ON When fault is detected the Alarm relay is activated OFF Audio alarm is disabled f...

Page 15: ...onnects to a power source via contacts of this normally energized relay Table 2 WARNING and ALARM Relay Active State Relay Jumper Normally De Energized Normally Energized Warning JB11 1 2 2 3 Alarm JB...

Page 16: ...ed any present WARNING ALARM or FAULT condition including those previously acknowledged will be silenced audio alarm off for 30 minutes If any WARNING ALARM or FAULT condition remains after 30 minutes...

Page 17: ...entive Maintenance of this manual for the recommended calibration schedule Caution Only qualified personnel should perform the actual calibration Users new to gas calibration are advised to consult wi...

Page 18: ...set to correspond to some fraction of the transmitters full scale calibration The WARNING threshold is set using trimpot RV5 The ALARM threshold is set using trimpot RV6 5 6 1 Equipment Required Digit...

Page 19: ...32V VLOW VLOW Where o VALARM is the voltage the alarm trip point will be set to o CALARM is the gas concentration at which the alarm is to be triggered o Cfull scale is 100 PPM for the AMC S2e CO o 1...

Page 20: ...0 380V 0 615V RV5 would be adjusted so that 0 615V is measured at TP5 MULTIMETER DIGITAL MEASURE VOLTAGE AT SIG TEST PT WITH RED LEAD CONNECT BLACK LEAD TO GND PAD TB1 TP7 RV6 RV4 RV5 TP1 TP2 TP3 TP4...

Page 21: ...the test button to verify the audio and WARNING and ALARM relays are operational It is recommended that the AMC S2e CO be calibrated a minimum of twice a year and 4 times a year is preferable As menti...

Page 22: ...are no short or open circuits in the sensor cabling Verify that there is no AC or DC voltage present on the sensor cabling prior to connecting the cabling to either the sensor or the monitor EQUIPMENT...

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