Sensor Electronics SEC 3100 Spécifications Page 6
- Page / 29
- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
rise. In addition, if the temperature of the gas is hotter than ambient air or mixed with gases that are
lighter than air, it could also rise.
• How rapidly will the gas diffuse into the ambient air? Select a location for the sensor that is close to the
anticipated source of a gas leak.
• Wind or ventilation characteristics of the immediate area must also be considered. Movement of air may
cause gas to accumulate more heavily in one area than in another. The detector should be placed in the
areas where the most concentrated accumulation of gas is anticipated. For outdoor applications with
strong wind conditions, it may require the sensors to be mounted closer together and on the down wind
side, to the anticipated area of a gas leak. Also take into consideration for indoor applications, the fact
that many ventilation systems do not operate continuously.
• The sensor should be accessible for maintenance.
• Excessive heat or vibration can cause premature failure of any electronic device and should be avoided
if possible.
• Follow all national and local installation codes and practices.
The SEC 3100 has three (3) ¾” NPT threaded connectors for mounting and wiring the sensor and
transmitter into a permanent installation.
Field wiring connections are made on the backside of the SEC 3100 printed circuit board (PCB). For wiring
details refer to Figure 2 in the back of the manual.
Power wire sizing:
0 to 500 feet, recommended wire gauge size 16 AWG
501 to 1000 feet, recommended wire gauge size 14 AWG
Shielded cable is recommended. Wiring should be installed in medal conduit with no other cabling in the
same conduit.
Warm-up
When power is applied to the SEC 3100, it enters a one (1) minute warm-up mode. The output current will
be 0.8 mA during the warm up time period. At the end of the warm-up period with no faults present, the
SEC 3100 automatically enters the normal operating mode (4.0 mA with no gas present). If a fault is
present after warm-up, the detector current output and LCD will indicate a fault. The Fault LED will also
indicate the fault.
Normal
In the normal operating mode, the 4 to 20 mA signal levels correspond to the detected gas concentration.
The transmitter continuously checks for and displays system faults or initiation of calibration and
automatically changes to the appropriate mode.
- SEC 3100 Transmitter 1
- Table of Contents 3
- I. SPECIFICATIONS 4
- Warning Statement 5
- VDC (DC Voltage) 5
- Installation and Startup 5
- ID: 1 9
- : 1 ID 19
- * EXIT 21
- DIAGNOSTICS 23
- * RESET RELAYS 23
- EXIT 23
- V. FIGURES 24
- ¾ h ) 25
- SEC 3100 WIRING 26
- FIGURE 2 26
- FIGURE 3 27
- SEC SENSOR SEPARATION KIT 27
- FIGURE 4 28
- FIGURE 5 29
- SEC 3100 – SEC 3000 Mounting 29
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