ECO-SENSE SINGLE CHANNEL TRANSMITTER User Manual MODEL: ECO-A-X MAN-0114 Rev 02 September 10, 2014
Table of Contents SECTION 1 – SAFETY INFORMATION ......................................................................... 1 1.1 1.2 Safety Information – Read Before Installation & Applying Power ........................................ 1 Contacting Net Safety Monitoring Inc. .................................................................................... 1 SECTION 2 – INSTALLATION INSTRUCTIONS ............................................................ 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Introduction ...
SECTION 1 – SAFETY INFORMATION WARNING: Read and understand the contents of this manual prior to operation. Failure to do so could result in injury or death. Note: Users are responsible for correct translations of this manual into their native language. 1.1 Safety Information – Read Before Installation & Applying Power IMPORTANT Users should have a detailed understanding of ECO-SENSE (ECO-A-X) Transmitter operating and maintenance instructions.
SECTION 2 – INSTALLATION INSTRUCTIONS 2.1 Introduction Important: This manual describes the 2-Wire 4-20mA versions of the ECO-A-X. The unit is a fixed-point monitor designed to provide continuous monitoring of hazardous gases in the workplace. Monitored values are displayed in their engineering units as well as graphically as a bar graphs or 30-minute trends (Figure 2.1). Input is for the electrochemical toxic sensor which is supplied by the factory.
2.3 Transmitter / Sensor Location Prior to the installation process, a location plan for placing the transmitter and sensor should be developed. Factors such as accessibility, air movement, gas density in relation to air, emission sources and environmental variables affect correct sensor and transmitter location. Air movement by fans, prevailing winds and convection should be carefully evaluated to determine if a leak is more likely to raise gas levels in certain areas within the facility.
2.4 The ECO-A-X Enclosure The ECO-A-X enclosure is an Aluminum or Stainless Steel explosion-proof (NEMA 4X) enclosure as shown in Figure 2-2. Table 1: ECO Sense (ECO-A-X) housing and sensor dimensions (A through J) in Inches and mm ECO-A-X Transmitter & sensor Transmitter & sensor(AL) Transmitter & sensor(SS) A in 4.8 4.7 B mm 122 119 in 3.6 3.6 C mm 91 91 in 3.6 3.6 D mm 91 91 in 4.8 4.7 E mm 122 119 in 5.1 5.1 F mm 130 130 in 0.3 0.3 G mm 7.6 7.6 in 2.6 2.
WARNING: Qualified personnel should perform the installation according to applicable electrical codes, regulations and safety standards. Insure correct cabling and sealing fitting practices are implemented. Also, never install the sensor pointing upwards. 2.5 System Design Specifications Supply Voltage: 10 to 30 VDC Power Consumption: • Toxic Sensors (2-wire 4-20mA operation): 25 mA @ nominal 24 VDC. Memory: Non-volatile E2 memory retains configuration values in the event of power outages.
ECO-A-X Transmitter Board Terminals TB1 Top terminal TB1 bottom terminal Table 2: Sensor Terminal connection TB2 Sensor Terminals Terminal Sensor Wire designation White CTR Red REF Black SEN Table 3: Power Terminal connection TB1 Power Terminals - non polar Power TB1 Connections TB1 top (+) 24VDC terminal TB1 bottom (-) 24VDC terminal Note: In Table 3, TB1 Terminals (Power Terminals) are non-polarized; if (+) 24VDC is connected to TB1 bottom terminal, and (-) 24VDC connected to TB1 top terminal a loop
SECTION 3 – INITIAL START-UP 3.1 “Transmitter Configuration” Menu Figure 3-1shows the ECO-A-X XMITTER CONFIG menu used to activate channels, precisely calibrate 4-20mA outputs and set time / date. Its menus are set at the factory and typically not needed by the user. To access from any data display, place and hold the magnet over the NEXT key for 5-seconds until the screen appears requesting a special key sequence (4-UP keystrokes). 3.1.
SECTION 4 – OPERATING INSTRUCTIONS 4.1 Routine Sensor Calibrations Calibration is the most important function for ensuring correct operation of the ECO-A-X. The CAL MODE (flow chart shown in Figure 4-2) is designed to make calibration quick, easy and error free. A successful ZERO and SPAN calibration requires only four keystrokes. The 4-20mA output indicates CAL MODE by transmitting 3mA. It then transmits 4mA during the subsequent CAL PURGE delay to prevent external alarms during calibration.
Calibration Steps Use the following step-by-step procedure to perform ZERO and SPAN calibrations. 1. To enter the CAL MODE activate the DOWN / CAL key with the magnet and within 5 seconds activate the EDIT key. 2. Using the Cal-Cup, apply clean ZERO gas (air) from canister or be sure there is no background target gas in the monitored area if ambient air is used. After the reading is stable, (approximately 1 minute) activate the EDIT key to perform a ZERO calibration. 3.
4.2 ALARM OPERATION The ECO-A-X has front panel LED indicators for Alarm 1(ALM1), Alarm 2(ALM2) and Alarm 3(FAIL). With 2-Wire 4-20mA operation, to conserve power, alarm LED’s only flash during alarm events. 4.2.1 ALARM 3 – UNDERSTANDING FAULT / LEVEL OPERATION The “A3”(FAIL) alarm is typically dedicated to FAULT conditions indicating sensor failures or “out of measurement range” conditions. However, some applications require a third level alarm.
SECTION 5 – SETUP MENU CONFIGURATION 5.1 Menus Database Configuration All ECO-A-X configuration variables are stored in its menu database. Many menu items will contain default values from the factory and require changes to better match a user’s particular application. ECO-A-X menus may be configured from the magnetic keypad in 5-10 minutes per transmitter. The ECO-A-X configuration menus are shown in Figure 5-1. 5.
items/sub menus. Use EDIT key to display the cursor, then activate UP / DOWN key to change that character, activate NEXT to move the cursor, then activate EDIT key again to load the new item and remove the cursor. Activate NEXT to back out of the sub-menu. To view SETUP PAGE 2, activate the DOWN key with the pointer aimed at the bottom item on PAGE 1. 5.3 System Configuration Menus: The System Config. group consists of two pages of menus as shown in Figure 5-3.
Linearization Data allows nonlinear signals to be linearized by entering the correct curve into the ECO-A-X (Figure 5-4). If Linearize is set for NO, the CURVE POINTS menu data is not used and no linearization is applied. When YES, the CURVE POINT entries are used and a straightline approximation is calculated between each of the 9 entries. 0% input always provides 0% output and 100% input always provides 100% output.
5.4 Alarm Settings: The Alarm Settings page has the Alarm 1, 2, 3 Setups, Relays and Event Log submenus shown in Figure 5-6. Alarm 1, Alarm 2 and Alarm 3/Fail menus are identical and therefore described only once in this section. IMPORTANT: Alarm functions and their associated LED’s are always active. Set Point enters the engineering unit value where the alarm trips. It may be negative and trip when monitored values fall out of range in this direction.
5.5 Sensor Information: Sensor Information has the SENSOR SETUP/INFO menus shown in Figure 5-7 Install New Sensor should always be performed when a new simple sensor is installed. This deletes historical CAL data and sets sensor life to 100% after initial calibration of the new simple sensor. Recall Cal History recalls each successful calibration. These dates may be reviewed by scrolling with the UP / DOWN keys.
Warm Up and Cal Purge time delays are also available to prevent unwanted alarm trips. Figure 5-8 shows the menu for these items. C L OC K / D E L A Y S E T UP T i me 12 : 3 5 : 4 2 Da t e 04/ 22/ 04 Wa r m U p S e c 12 0 Ca l P u r g e S e c 10 0 Figure 5-8: Clock & Calendar / Delay Timer Menu 5.7 LCD Contrast Adj: LCD Contrast Adj. may be set for optimum viewing using the menu shown in Figure 5-9. C ON T R A S T U P / D O WN NE X T t o change t o EXI T Figure 5-9: LCD Contrast Adjust Menu 5.
5.10 SYSTEM SECURITY: The SYSTEM SECURITY menu offers two levels of protection. A LOW level allows CAL MODE sensor calibrations but requires the 4-digit Pass Code prior to altering menus. HIGH level locks the entire menu database and the CAL Mode until the correct Pass Code is entered. LOW and HIGH security levels always allow viewing of configuration menus but they may not be changed. Contact Name is a 12 character ASCII field available for displaying a phone # or name of personal who know the Pass Code.
SECTION 6 – HOW TO RETURN EQUIPMENT A Material Return Authorization number is required in order to return equipment. Please contact Net Safety Monitoring at (403) 219-0688, before returning equipment or consult our Customer Care Department to possibly avoid returning equipment. If you are required to return equipment, include the following information: 1. A Material Return Authorization number (provided over the phone to you by Net Safety). 2. A detailed description of the problem.
Appendix Appendix A: Electrostatic Sensitive Device (ESD) Definition: Electrostatic discharge (ESD) is the transfer, between bodies, of an electrostatic charge caused by direct contact or induced by an electrostatic field. The most common cause of ESD is physical contact. Touching an object can cause a discharge of electrostatic energy—ESD! If the charge is sufficient and occurs near electronic components, it can damage or destroy those components.
Appendix B: Resistance Table Distance (Feet) AWG #20 AWG #18 AWG #16 AWG #14 AWG #12 AWG #10 AWG #8 100 1.02 0.64 0.40 0.25 0.16 0.10 0.06 200 2.03 1.28 0.80 0.51 0.32 0.20 0.13 300 3.05 1.92 1.20 0.76 0.48 0.30 0.19 400 4.06 2.55 1.61 1.01 0.64 0.40 0.25 500 5.08 3.20 2.01 1.26 0.79 0.50 0.31 600 6.09 3.83 2.41 1.52 0.95 0.60 0.38 700 7.11 4.47 2.81 1.77 1.11 0.70 0.44 800 8.12 5.11 3.21 2.02 1.27 0.80 0.50 900 9.14 5.75 3.61 2.
Appendix C: ECO Sense Specifications Range Response Time Accuracy Certified Temperature Range Operational Voltage Power Consumption Enclosure Material Certifications and Approval ECO Sense Specification and Certifications 0-50 PPM T20 < 10 sec T50 < 30sec ± 3 ppm or ±10% of reading, whichever is greater (25°C) ± 15% of reading (at 0 and 50°C) 0°C to +50°C (+32°F to +122°F) 10 – 30 Vdc 25 mA @ nominal 24 Vdc Aluminum / Stainless Steel EX 60195X IP64 Class 1, Div 1, Grps B, C, D, T5.
Net Safety Monitoring Inc. 2721 Hopewell Place NE, Calgary, AB Canada T1Y 7J7 1-866-FIREGAS (347-3427) | ph. (403) 219-0688 | fx. (403) 219-0694 http://www.emersonprocess.com/safety | Email: safety.csc@emerson.
