Manning Systems
Typical Specifications

Ammonia Gas Detection

A typical ammonia detection system for a cold storage or food processing plant will consist of a central gas monitor alarm system (GM-1, GM-4, or GM-10) with sensor(s) in the engine room, vent line(s), and refrigerated rooms. We have included system drawings in PDF and CAD format for two of these models, the GM-10 ( PDF / CAD) and GM-4 (PDF / CAD) to assist you in integrating them into a complete system design. The drawings include wiring layouts for a selection of electrochemical, infrared and vent line sensors, with typical output control functions and auxiliary alarm or power backup equipment.

Engine Room Detection

In the engine room, codes and/or insurance companies usually require audio-visual indication at 50 ppm, emergency ventilation at 150 ppm, and sometimes require shutdown of all electrical equipment at a very high level (20,000 ppm or above) to prevent the possibility of an explosion.

Because the engine room is usually the most likely place for an ammonia leak, the use of two EC-F9-NH3 sensors will give valuable redundancy at this first stage of response to an ammonia leak. Tied into the GM-10, the Warning setpoints can be set at 50 ppm and the Warning relays used to trigger a horn / strobe unit. The Alarm setpoints can be set at 150 ppm and the Alarm relays used to trigger the emergency vent fan starter.

High Level Electrical Shutdown

Equipment selection for high level electrical shutdown requires the use of a different sensor as any sensor that is accurate at the low level can't go high enough, and any sensor that can go high enough will not be accurate at the low levels. The use of the IR-NH3-0/2%-N4 sensor will give a "long life, no false trip" solution to this critical application. Tied into the GM-10, the Alarm relay output can be used to shunt trip the electricity to the engine room at 20,000 ppm (2%).

Refrigerated Rooms

ATMOS equipped® – Manning Systems highly successful ATMOS (Adaptive Temperature and Moisture Optimizing System), the first enviro-adaptive technology available for gas sensors. ATMOS equipped® enclosures actually sense the surrounding environment and create a controlled mini-atmosphere inside the sensor that optimizes the air sample quality. Manning Systems electrochemical and infrared gas sensors that are ATMOS equipped® automatically adapt to environments from -50°F to 100% humidity and washdown conditions, assuring industry leading performance in the harshest environments and welcome flexibility during system installation.

In refrigerated rooms, typical requirements are audio-visual indication at 25 ppm and shutdown of liquid feed to the coil at 50 ppm. These requirements can be met (and even exceeded) using the EC-F9-NH3 sensors in each room.

Tied into the GM-10, the individual Warning relay can activate audio-visual at 25 ppm and the individual Alarm relay can be used to shutdown the liquid feed solenoid at 50 ppm. Manning Systems recommends these lower setpoints, as the electrochemical technology is accurate at these levels and operates without false trips. In these areas, ammonia should never be present, so there is no harm in taking action a little sooner than required.

Vent Line

The vent line sensors are typically used to provide audio-visual indication at the GM-10 to alert plant personnel to a release in the vent line.

If the facility can be covered with four (4) sensors or fewer, utilize the GM-4 Gas Monitor. If more than ten (10) sensors are required, simply use multiple GM-10's. The entire system can be backed up with one Uninterruptible Power Supply (UPS) at the Gas Monitor location to meet requirements for battery back up time and prevent any glitches from power disturbances in the facility.


Equipment List - Ammonia Gas Detection System

Quantity Description
1 GM-10 Ten-Channel Gas Monitor with calibrated 20-segment LED bargraph readout per channel, four common relays (warning, alarm, fault, and horn), dual adjustable setpoint levels, in #14 gauge steel NEMA 1 enclosure with plexiglass window for viewing display, has internal power supply to power sensors (Sensors not included). C/US Certified.
1 GM-10-RB Relay Board for GM-10 provides an individual warning relay and alarm relay for each channel of a GM-10. Total of 20 form C relays (two per channel), rated 3 amps at 120 VAC or 24 VDC.
1 EX7 UPS Uninterruptible Power System powering GM-10
1 CK-UCA-NH3 Calibration Kit, including certified calibration gas for specified sensors
9 Assorted Gas Sensors, locations and outputs specified in following table.

 

List of Sensors - Location/Type

Channel Sensor Location Sensor Warn Setpoint Warn Relay Output Alarm Setpoint Alarm Relay Output
1 Engine Room EC-F9-NH3-0/250ppm-N1 50 ppm Horn Strobe 150 ppm Emergency Vent Fan
2 Engine Room EC-F9-NH3-0/250ppm-N1 50 ppm Horn Strobe 150 ppm Emergency Vent Fan
3 Engine Room IR-F4-NH3-0/2%-N4 1%   2% Electrical Shunt Trip
4 Vent Line VL-F7-NH3-0/1%-N4-MK 0.5%   1%  
5 Freezer EC-F9-NH3-0/100ppm-N1-ATMOS 25 ppm Horn Strobe 50 ppm Liquid Solenoid
6 Freezer EC-F9-NH3-0/100ppm-N1-ATMOS 25 ppm Horn Strobe 50 ppm Liquid Solenoid
7 Cooler EC-F9-NH3-0/100ppm-N1-ATMOS 25 ppm Horn Strobe 50 ppm Liquid Solenoid
8 Cooler EC-F9-NH3-0/100ppm-N1-ATMOS 25 ppm Horn Strobe 50 ppm Liquid Solenoid
9 Dock EC-F9-NH3-0/100ppm-N1-ATMOS 25 ppm Horn Strobe 50 ppm Liquid Solenoid
10 Spare Channel          

 

Utilizing the GM series Gas Monitors with Manning Systems sensors provides a complete stand alone safety system carrying the CSA - UL, C approval and mark. This assures system performance and conveys peace of mind to local Fire Chiefs, insurance inspectors, and facility owners.

The use of Manning Systems certified calibration gas to field calibrate the sensors in the presence of fire or insurance personnel ensures a successful inspection.


GM-10 Gas Monitor

Ten Channel Gas Monitor which supports up to ten (10) gas sensors. Designed to support Manning Systems gas sensors to provide a complete CSA - UL, C approved stand-alone safety system.

  1. Powers each sensor 24 VDC at up to 1.0 amp.
  2. Accepts 4-20 mA gas concentration signal from each sensor, including fault monitoring signal of 0.5 mA.
  3. Supervises wire run to each sensor with fault indication, if compromised.
  4. High visibility LED dedicated bargraph gas concentration display for each sensor (total of 10).
  5. Warning LED with field adjustable setpoint for each sensor.
  6. Alarm LED with field adjustable setpoint for each sensor.
  7. Individual channel Alarm and Warning setpoint test buttons.
  8. Common Warning Relay output (1).
  9. Common Alarm Relay output (1).
  10. Common Fault Relay output (1).
  11. Integral Horn and Horn Relay output with silence pushbutton.
  12. All relay outputs - Form C dry contacts, rated 3 amps at 115 VAC or 24 VDC.
  13. Each individual relay is field adjustable DIP switch selectable to latch or non-latch.
  14. All relays will be held in the normal condition to prevent system shutdown during calibration.
  15. Optional Relay Board to provide Individual Warning and Alarm relay for each sensor. (Total of 20 relays)
  16. Optional Analog Output Board to provide individual isolated 4-20 mA loop powered output for each sensor.
  17. Optional embedded web server with Ethernet connection to allow viewing of gas concentration information over facility LAN with web browser.
  18. Optional Notification Appliance Circuit to provide individual supervised Horn and Strobe outputs for each sensor.
  19. All contained in rugged #14 gauge steel, gasketed NEMA 1 enclosure.
  20. Power input 115/230 VAC, 50/60 Hz, 1.5 amp.
  21. CSA - UL, C approved.
  22. Model GM-10 Gas Monitor as manufactured by Manning Systems, Inc. - 1.800.444.9935.

GM-4 Gas Monitor

Four Channel Gas Monitor which supports up to four (4) gas sensors. Designed to support Manning Systems gas sensors to provide a complete CSA - UL, C approved stand-alone safety system.

  1. Powers each sensor 24 VDC at up to 1.0 amp.
  2. Accepts 4-20 mA gas concentration signal from each sensor, including fault monitoring signal of 0.5 mA.
  3. Supervises wire run to each sensor with fault indication, if compromised.
  4. High visibility LED dedicated bargraph gas concentration display for each sensor (total of 4).
  5. Warning LED with field adjustable setpoint for each sensor.
  6. Alarm LED with field adjustable setpoint for each sensor.
  7. Individual channel alarm and warning setpoint test buttons.
  8. Common Warning Relay output. (1).
  9. Common Alarm Relay output. (1).
  10. Common Fault Relay output. (1).
  11. Integral Horn and Horn Relay output with silence pushbutton.
  12. All relay outputs - Form C dry contacts, rated 3 amps at 115 VAC or 24 VDC.
  13. Each individual relay is field adjustable DIP switch selectable to latch or non-latch.
  14. All relays will be held in the normal condition to prevent system shutdown during calibration.
  15. Optional Relay Board to provide Individual Warning and Alarm relay for each sensor. (Total of 8 relays)
  16. Optional Analog Output Board to provide individual isolated 4-20 mA loop powered output for each sensor.
  17. Optional embedded web server with Ethernet connection to allow viewing of concentration information over facility LAN with web browser.
  18. Optional Notification Appliance Circuit to provide individual supervised Horn and Strobe outputs for each sensor.
  19. All contained in rugged #14 gauge steel, gasketed NEMA 1 enclosure.
  20. Power input 115/230 VAC, 50/60 Hz, 1.5 amp.
  21. CSA - UL, C approved.
  22. Model GM-4 Gas Monitor as manufactured by Manning Systems, Inc. - 1.800.444.9935.

GM-1 Gas Monitor

Single Channel Gas Monitor which supports one (1) gas sensor. Designed to support a Manning Systems gas sensor to provide a complete CSA - UL, C approved stand-alone safety system.

  1. Powers sensor 24 VDC at up to 1.0 amp.
  2. Accepts 4-20 mA gas concentration signal from sensor, including fault monitoring signal of 0.5 mA.
  3. Supervises wire run to sensor with fault indication, if compromised.
  4. High visibility LED bargraph gas concentration display.
  5. Warning LED with adjustable setpoint.
  6. Alarm LED with adjustable setpoint.
  7. Warning Relay output.
  8. Alarm Relay output.
  9. Fault Relay output.
  10. Integral Horn with silence pushbutton.
  11. All relay outputs - Form C dry contacts, rated 3 amps at 115 VAC or 24 VDC.
  12. Optional Analog Output Board to provide isolated 4-20 mA loop powered output.
  13. All contained in rugged #14 gauge steel, gasketed NEMA 1 enclosure.
  14. Power input 115/230 VAC, 50/60 Hz, 1.5 amp.
  15. CSA - UL, C approved.
  16. Model GM-1 Gas Monitor as manufactured by Manning Systems, Inc. - 1.800444.9935.

EC-F9-NH3 Gas Sensor / Transmitter

Ammonia Selective Electrochemical Gas Sensor. Designed to be used with a Manning Systems GM series Gas Monitor to provide a complete CSA - UL, C approved stand-alone safety system.

  1. SensorCheck™ capability
  2. Specify range of 0 to 100 ppm, 0 to 250 ppm, 0 to 500 ppm, or 0 to 1000 ppm.
  3. Accuracy: +/- 5%
  4. Repeatability: +/- 2%
  5. Response Time: immediate response required, T90 = 1 minute.
  6. Output: Linear 4 to 20 mA into 500-ohm max impedance.
  7. Power Requirement: +24 VDC @ 0.5 amp max.
  8. Humidity: 5 to 100% RH condensing utilizing ATMOS equipped® enviro-adaptive technology.
  9. Operating Temperatures: -60° F to +125° F utilizing ATMOS equipped® enviro-adaptive technology.
  10. Gas sampling by diffusion with no moving parts.
  11. Rugged #16 gauge steel, gasketed NEMA 1 enclosure housing electronics and sensor element.
  12. ATMOS enviro-adaptive technology for refrigerated, outdoor, and washdown applications.
  13. Optional ATMOS-ST stainless steel enclosure available.
  14. Field calibration supported.
  15. Field replacement of sensor element supported.
  16. Wiring required: #18 AWG, 3 conductor, shielded cable for runs up to 1500 ft. Belden #8770 or equal.
  17. CSA - UL,C approval pending.
  18. Model EC-F9-NH3-0/XXX-N1 Gas Sensor as manufactured by Manning Systems, Inc. - 1.800.444.9935.

IR-F4-NH3 Gas Sensor / Transmitter

Ammonia Selective Infrared gas sensor. Designed to be used with a Manning Systems GM series gas monitor to provide a complete CSA - UL, C approved stand-alone safety system.

  1. Range: 0 to 2%.
  2. Accuracy: +/- 5%
  3. Repeatability: +/- 1%
  4. Response Time: T90 = 1 minute
  5. Output: Linear 4 to 20 mA into 250-ohm max impedance, 0.5 mA fault .
  6. Power Requirement: +24 VDC @ 0.5 amp max.
  7. Humidity: 5 to 100% RH condensing utilizing ATMOS equipped® enviro-adaptive technology.
  8. Operating Temperatures: -50° F to +125° F utilizing ATMOS equipped® enviro-adaptive technology.
  9. Gas sampling by diffusion with no moving parts.
  10. Rugged 16 gauge steel NEMA 4 enclosure housing electronics and sensor element.
  11. ATMOS enviro-adaptive technology for refrigerated, outdoor, and washdown applications.
  12. Optional ATMOS-ST stainless steel enclosure available.
  13. Field calibration supported.
  14. Wiring required: #18 AWG, 3 conductor, shielded cable for runs up to 1500 ft utilizing standard enclosure. Belden #8770 or equal. If ATMOS enclosure, runs over 200 ft require #16 AWG, 3 conductor, shielded cable, Belden #8618.
  15. CSA - UL, C approved.
  16. Model IR-F4-NH3-0/2%-N4 Gas Sensor as manufactured by Manning Systems, Inc. - 1.800.444.9935.

VL-NH3 Vent Line Leak Detector / Transmitter

Vent Line Leak Detector. Includes VL sensor, Preamp, and mounting kit. Designed to be used with a Manning Systems GM series Gas Monitor to provide a complete CSA - UL, C approved stand-alone safety system.

  1. Range: 0 to 10,000 ppm NH3.
  2. Response time: immediate response required, T90 = 1 minute.
  3. Output: Linear 4 to 20 mA into 500-ohm max impedance.
  4. Power required: +24 VDC @ 0.5 amp max.
  5. Operating Temperatures: -20° F to +120° F.
  6. Gas sampling by diffusion with no moving parts.
  7. Rugged #16 gauge stainless steel NEMA 4 enclosure housing electronics and aluminum NEMA 4 enclosure housing sensor element.
  8. Wiring required: Preamp to gas monitor alarm panel - #18 AWG, 3 conductor, shielded cable for runs up to 1500 ft, Belden #8770 or equal. VL sensor to preamp - 16 AWG, 4 conductors, non-shielded for runs up to 25 ft.
  9. CSA - UL, C approved.
  10. Model VL-NH3-LPA-N4-MK Vent Line Leak Detector as manufactured by Manning Systems, Inc. - 1.800.444.9935.

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