Brandt Instruments Representing Otis Instruments Fixed Gas Detection System, OI-7543 WireFree 4-Channel Receiver for Gen II Fixed Gas Detection System
                    Brandt Instruments Representing Otis Instruments
   


Otis Instruments Fixed Gas Detection Systems Logo

Otis Instruments OI-7543
WireFree™ 4-Channel Remote Sensor Monitor
Fixed Point Gas Detection Systems



home otis instruments fixed point detectors OI-7543 OI-7543 WIreFree 4-Channel Remote Sensor Monitor

 

     Otis Instruments OI-7543 WireFree 4-Channel Monitor Receiver for WireFree Gen II Assemblies


OI-7543 WireFree™ 4-Channel Monitor
For Gen II Remote Sensor Assemblies

The OI-7543 is a self contained WireFree 4-Channel monitor designed for use in conjunction with Otis Instruments Gen II WireFree remote sensor assemblies.  The OI-7543 receiver features 3 relays, and can monitor up to four WireFree sensors.  The ability to mount the device near the entrance of a site allows the technician to immediately determine if it is safe to enter the site, making this device incredibly useful in any environment hosting hazardous gas.

   Pre-mounted alarms for quicker, easier installation
   Connect with up to 4 sensor assemblies
   3 dry contacts for lights & accessories
   Customizable kit with OI-6900 Sensor Assemblies
            1. CSA and ATEX Certified
            2. Non-intrusive calibration
            3. Glass lid for viewing display
            4. Rapid response & clearing time
   Compatible with pre-existing Gen II sensor assemblies

   Radio Options:
              Gen II radio 900 MHz, 200mW

               (2.4 GHz ISM, 100mW available for international use)

                                                                                     


OI-7543 WireFree 4-Channel Remote Sensor Monitor
Technical Specifications

Enclosure
Integra Enclosures - thermoplastic polycarbonate enclosure
Size 8 " x 8" x 4"
Display Graphical LCD, sunlight readable (transflective), LED back-light, 160x104 pixel resolution
Channels

4 Channels with individually configurable set-poiints

Operating Temperature -30° F to 70° C
Relays Three dry-contact (5 Amp) with 4 Amp fuses
Supply Voltage 12-35 VDC or 120/240 Volts VAC
Power Consumption Nominal: 100mA @ 12 VDC in a static condition
Radio Options 1.  2.4 GHz ISM, 100mW, 3 miles line-of-sight
2.  900 MHz, 200mW
Radio Transmission Every 1 minute with no change from sensor
Every 5 seconds with change from sensor
Warranty

Hardware: One year (limited)

Otis WireFree Logo

Otis OI-7543 Brochure

   OI-7543 Manual

For additional accessories & options:  Accessories

CSA Certification Icon
ATEX Certification Icon

Otis Instruments OI-7543 WireFree 4-Channel Monitor

OI-7543 WireFree 4-Channel Monitor Diagram

Otis Instruments Replacement Gas Sensors
For Wired or WireFree™ Remote Sensor Assemblies

Part # Description Range Resolution
Accuracy
OI-254-O2 O2, Oxygen 0 - 25% 0.1%
± 2%
OI-120-NP-17SHM LEL, Combustible Gas
(Catalytic Bead) (OI-6000 only)
0 - 100% LEL 1.0% Increments
±1%
OI-140-NP-IR-LEL LEL, Combustible Gas (Infrared)
(OI_6000 only)
0 - 100% LEL 1.0% Increments
± 2%
OI-254-CO CO, Carbon Monoxide 0 - 999 ppm 0.1 to 10 ppm, 1 ppm thereafter
± 2%
OI-140-IR-CO2 CO2, Carbon Dioxide
(OI-6000 only)
0 - 5% 0.1 ppm
± 2%
OI-254-H2S H2S,  Hydrogen Sulfide 0 - 100 ppm 0.1 to 10 ppm, 1 ppm thereafter
± 2%
OI-254-H2S-2K H2S, Hydrogen Sulfide (Ext.Temp) 0 - 100 ppm 0.1 to 10 ppm, 1 ppm thereafter
± 2%
OI-254-NH3 NH3, Ammonia 0 - 100 ppm 0.1 to 10 ppm, 1 ppm thereafter
± 5%
OI-254-NH3A NH3, Ammonia (Ext) 0 - 1000 ppm 0.1 to 10 ppm, 1 ppm thereafter
± 5%
OI-254-Cl2 Cl2, Chlorine 0 - 10 ppm 0.1 ppm
± 5%
OI-254-F2 F2, Florine 0-1 ppm 0.01 ppm
± 5%
OI-254-CH2O CH2O, Formaldeyde 0-10 ppm 0.01 ppm
± 2%
OI-254-H2 H2, Hydrogen 0- 4% 0.1 ppm
± 10%
OI-254-HCl HCN, Hydrogen Chloride 0- 30 ppm 0.1 ppm
± 5%
OI-254-HCN HCN, Hydrogen Cyanide 0- 30 ppm 0.1 ppm
± 5%
OI-254-HF HF, Hydrogen Floride 0 - 10 ppm 0.1 ppm
± 10%
OI-254-NO2 NO2, Nitrogen Dioxide 0-50 ppm 0.1 ppm
± 5%
OI-254-O3 O3, Ozone 0-100 ppm .1 to 10 ppm, 1 ppm thereafter
± 2%
OI-254-SO2 SO2, Sulfur Dioxide 0 - 20ppm .1 to 10 ppm, 1 ppm thereafter
± 2%
OI-254-PH3 PH3, Phosphine 0 - 20 ppm 0.1 ppm
± 2%
OI-254-PID-A1 PID, Photo Ionization Detector for volatile organic compounds (VOCs) (OI-6000 only) 10, 20 or 50 ppm 0.1 to 10 ppm, 1 ppm thereafter
± 5%
OI-254-AH PID, Photo Ionization Detector for volatile organic compounds (VOCs) (OI-6000 only)

1000 or 2000 ppm

0.1 to 10 ppm, 1 ppm thereafter
± 3%


Note: Other gases and ranges available
. Contact us for additional information

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WARNING! Otis Instruments equipment should only be used in conjunction with the manufacturer's instructions.
Failure to follow such instructions could result in serious injury or fatalities.

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Brandt Instruments, Inc. 
    18568 Oak Grove Parkway 
    Prairieville, LA  70769 
1-800-337-6291  
Phone: 225-673-6776
    Fax: 225-673-6725
 

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