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  • provides a wide range of industrial gas detection systems including toxic, oxygen and combustibles, truly "state of the art" devices offering unparalleled features and capabilities along with Hazardous Area, Explosion Proof, UL, Atex and CSA certifications at a reasonable price. We also offer gas detection solutions with PLC & SCADA.

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SKU#(133) Be the First to Review this Item

GDS  GM/EC-03-21-01


$1,495.00     Availability: 2 Weeks
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GDS GM/EC-03-21-01 (1)
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GDS GASMAX/EC 2-Wire Gas Detector with local stainless steel sensor head (non-XP) configured for Ozone (O3) with range 0-1 ppm, 4-20 mA output transmitter.

Part# with Options:        GM/EC-03-21-01
Price with Options:        1,495.00


Sensor Head
(1) Sensor Head for GDS GM/EC (reactive gases) Non-Explosion proof
(2) Stainless Steel Enclosure for GDS
(3) Tag for GDS
IS Barrier-Explosion Proof (10-0263)
(4) Intrinsically safe barrier for GDS 2-wire gas detectors
For Explosion-Proof installations, model MTL 7787P+ or equivalent

  Availability 2 Weeks  ]

The GASMAX EC single channel gas monitor for toxic or oxygen deficiency ap- plications delivers the latest in loop-pow- ered gas detection technology, reliability and ease of use.

Wide Variety of Available Sensors

The GASMAX EC support all GDS Corp toxic sensors, including oxygen, hydrogen sulfide, chlorine, carbon monoxide and more. In addition, GDS Corp Smart Sen- sors enhance this capability by maintain- ing their own record of serial number, born-on date, initial calibration values, engineering units and more. Using this information, the GASMAX EC constantly tracks sensor performance and calculates an estimate of sensor life remaining. Built-in fault detection circuity constantly monitors the sensor for correct operation.

Advanced User Interface

The highly visible graphic display and flashing alarm LEDs constantly show alarm status, calibrated engineering values and a programmable tag name, plus a trend screen shows alarm levels and a graph of the most recent 30 minutes.

An internal real-time clock and event log time-stamp up to 300 calibration and alarm events for later review. Taking advantage of the high-resolution graphic display, an easy-to-use menu-driven operator interface using magnetic keys eliminates all analog potentiometers and allows complete setup and calibration without hazardous area declassification.

Three operational levels of security al- low the GASMAX EC to be fully field configurable, partially restricted or com- pletely restricted by way of user ID and access code.

Explosion-Proof or Intrinsically Safe

The GASMAX EC is CSA certified for use in Div 1 & Div 2 hazardous areas and can be installed as Explosion Proof (with stainless steel sensor head) or Intrinsi- cally Safe (with aluminum sensor head) using appropriate wiring techniques and an Intrinsically Safe barrier. See notes on IS installation on back. An ATEX certi- fied version for XP installations is also available.


  • Certified for Explosion Proof and Intrinsically Safe Installations
  • Non-polarized loop powered inter- face eliminates wiring errors
  • Graphic display shows values, units, trend graph, alarm levels
  • Three flashing Alarm LEDs with Programmable Alarm Levels
  • Real time clock tags alarm and calibration events
  • Supports both local and remote sensors for easy installation
  • Non-intrusive, prompted calibra- tion with programmable cal gas
  • Power-up and post-calibration delays eliminate false alarms
  • Security settings to lock critical parameters
  • Auto-recognition of Smart Sensors uploads calibration data & more
  • Fault supervision circuitry detects failed sensor & transmits warning
  • Setup in hazardous area requires only simple magnetic wand
  • For combustible applications, see the GASMAX II gas monitor

Note: Sensor Heads 3, 4 and 8 require INTRINSICALLY SAFE (IS) installations in hazardous locations. IS installations require an IS barrier (#10-0263 MTL 7787P+) or equivalent that must be mounted in an area designated as Non-hazardous.

Power Input: 10-30VDC at less than 0.75 watts in 2-wire 4-20mA configuration
Display 64 x 128 pixel LCD with 30-minute trend, bargraph and engineering units display.
Input Accepts microamp-level signals from local or remote GDS Corp toxic or oxygen deficiency sensors
Calibration Range Zero = +/- 15% of range with 0.1% resolution
Span = Gain adjustment of 0.5 to 2.0 with 0.1% resolution
Accuracy +/- 5% of full scale range (typical)
Standard Output Standard 2-wire 4-20mA current sink output. Max loop R is 600 ohms with nominal 24VDC power supply.
Temp -25°C to +60°C (see sensor limitations)
Housing Aluminum housing with epoxy paint standard; #316 stainless steel optional
Dimensions Width 5.4” (137 mm), Height 8” (203 mm), Depth 5” (127 mm) Shipping weight 6.5 pounds (3 kg)
Approvals CSA Certified Div 1 & 2 Groups B, C, D. Suitable for explosion-proof installations
CSA Certified Div 1 & 2 Groups A, B, C, D. Intrinsically safe.
IMPORTANT: Intrinsically Safe installations require IS barrier #10-0263 (MTL 7787P+) or equivalent.
ATEX Certified EX II 2 G EEx d IIB + H2 T5
Warranty Two years on electronics and one year on sensors from date of purchase

    10-9521-R01 Electrochemical Smart Sensor configured for Ozone with range 0-1 ppm. For GDS GASMAX EC, GASMAX II, TRANSMAX EC, TRANSMAX II with stainless steel sensor head and GDS GASMAX ECx, GASMAX IIx, GDS-..

    A23-14-1054 Gas calibration kit for Ozone O3 0.800 ppm (Balance Air). Ozone generator includes a "dry air" cylinder, 103 L. ..

    10-0263 GDS Intrinsically safe IS barrier for GASMAX II and GASMAX EC. Model MTL 7787P+ or equivalent ..

    C1/SM/0000/000000/00000 C1 Multi-Point Alarm gas detector Controller with 8 or 16 channel alarm & display controller for monitoring applications. It can be configured for GAS MAX wireless gas monitors. Standard 5A SPDT common relays and up to 48 discrete relays. 1 or 2 optional..

    C2QUAD-00-00000-0-0 C2 Quad Protector Multi-Point Alarm Controller for gas detectors/transmitters with four channel alarm & display for monitoring applications. Accepts either 4 x 4-20mA, 4 x bridge-type, 2 x mA/2 bridge or wireless devices. It can be configured for GAS MAX ..

    10-0203 GDS Sensor calibration cup for stainless steel / aluminum sensor heads ..

B2B Checkout Options: Designated Carrier and Tax-Exempt purchase
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> GAS DETECTORS > OZONE :    6 Items found.
EC-F2-O3-0001-N1 (1534) HONEYWELL  EC-F2-O3-0001-N1

Honeywell Analytics Manning EC-F2 gas detector with electrochemical sensor for Ozone (O3) 0-1 ppm with Isolated 3-wire 4-20 mA output, 24VDC Power, NEMA-1 enclosure. *** phased out *** *** phased out ***



TM-EC-48-21-01-0 (3396) GDS  TM-EC-48-21-01-0

GDS TRANSMAX EC Loop-Powered Gas Monitor with stainless steel sensor head and integrated sensor configured for Ozone (O3) for range 0-1 ppm. 2-wire 4-20mA current sink output and large LCD Display. Polycarbonate housing (IP66/IP67).



TMII-48-21-01/00-00-00/0-0 (157) GDS  TMII-48-21-01/00-00-00/0-0

GDS TRANSMAX II Gas Detector with Local DELDRIN sensor head (non-XP) with integrated sensor configured for Ozone (O3) for range 0-1 ppm with optional Alarm Relay Board (3x 5A SPDT) and RS-485 Modbus RTU, 4-20mA output transmitter.



967-393990-001 (6097) DETCON  967-393990-001

Detcon DM-700-O3 Electrochemical "Smart" Ozone (O3) 0-1 ppm Sensor Assembly with LED display. 4-20mA and Modbus RS-485 outputs. 316 Stainless Steel Housing. Water Proof, Corrosion Proof, Vibration Proof and Explosion proof. NEMA 4X. IP66. Class I, Div. 1, Groups B, C, & D. CSA and ATEX approvals.



EX-O3-1P-O (6034) MACURCO  EX-O3-1P-O

Macurco Ex Series Explosion Proof Electrochemical Gas Detector for detection of Ozone (O3) 0-1ppm. Includes 4-20 mA Output, Three Onboard Relays, RS-485 Communication and LCD Digital Display. Aluminium Enclosure. IP66. FM and CSA approvals for Class I Division 1.



GMII-03-021-01/00-000-00/0-0 (145) GDS  GMII-03-021-01/00-000-00/0-0

GDS GASMAX II 3-Wire Gas Detector with local stainless steel sensor head (non-XP) configured for Ozone (O3) with range 0-1 ppm, 4-20 mA output transmitter with optional Alarm Relay Board (3x 5A SPDT) and RS-485 Modbus RTU.



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