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ETM-IS51-113

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The EXPO ETM-IS51-113 is an evidence-bounded, intrinsically safe electronic timer module engineered specifically for purge, pressurization, and pre-start ventilation control within hazardous area enclosure protection systems.
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Technical specifications for ETM-IS51-113

  • Manufacturer:
    EXPO
  • Part Number:
    ETM-IS51-113
  • Product Family:
    EXPO
  • Product Type:
    Intrinsically Safe Electronic Purge Timer Module
  • Stock:
    1
  • Protection Concept:
    Intrinsically Safe (Ex ia)
  • Power Source Option:
    Certified Power Supply / EPPS Configuration
  • Mounting Format:
    Plate Mounted (Code 1)
  • Status Indication:
    4 Surface-Mounted Status LEDs (Code 1)
  • Timer Adjustment:
    Dual Binary-Coded Decimal (BCD) Switches
  • Maximum Time Range Code:
    13
  • System Integration:
    Approved Expo MiniPurge ET Enclosure Control Systems
  • Output Signal:
    Volt-free contacts / intrinsically safe solid-state logic outputs
  • Operating Temperature Range:
    -20°C to +55°C (-4°F to +131°F)
  • Storage Temperature Range:
    -20°C to +70°C (-4°F to +158°F)
  • Operating Voltage:
    12V DC nominal
  • Relative Humidity:
    0% to 95% non-condensing
  • Ingress Protection:
    IP20
  • Weight:
    0.15 kg
  • Estimated shipping dimensions:
    80 x 65 x 35 mm
  • Tariff Code:
    85371091
  • Country of origin:
    United Kingdom
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Applications Diagnostics & Protection Monitoring & Control Environment

Features:

  • Operates on an approved EPPS intrinsically safe external power supply arrangement.
  • Provides onboard dual BCD rotary switches for precise purge timing cycle adjustments up to 99 minutes.
  • Features 4 surface-mounted status LEDs for real-time visual system feedback.
The EXPO ETM-IS51-113 is configured with plate-mounted hardware (Code 1), an Ex-certified EPPS power option (Code 5), 4 diagnostic LEDs (Code 1), and a maximum timing range option of 99 minutes (Code 13).

Designed for installation inside hazardous area enclosures, the EXPO ETM-IS51-113 governs pre-start ventilation timing and interlock logic within Expo MiniPurge ET system architectures before high-voltage electrical equipment is powered.

Proper installation requires verifying intrinsically safe EPPS wiring orientation, establishing correct BCD switch time settings, and ensuring strict compliance with system control drawings during maintenance or commissioning.

The EXPO ETM-IS51-113 is available for ordering with full technical documentation and global supply support by the manufacturer (OEM).
EXPO ETM-IS51-113 Intrinsically Safe Electronic Timer Module Manuals, Datasheets, Links Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Provides pre-start purge and pressurization timing for hazardous area electrical enclosures.
  • Controls pre-energization ventilation cycles in Zone 1 and Zone 2 analyzer shelters.
  • Manages safety timing interlocks for paint spray booth control equipment cabinets.
  • Features 4 onboard surface-mounted LEDs to provide immediate visual operational status feedback.
  • Designed under Intrinsic Safety (Ex ia) protection concepts for safe operation in hazardous atmospheres.
  • Protects internal circuitry against improper hazardous area power levels through certified EPPS integration.
  • Interacts directly with external enclosure enable switches to control the purge sequence timing logic.
  • Provides solid-state logic output signals to govern solenoid valve circuits and pre-start ventilation.
  • Ensures power interlocks remain active until the full pre-set purging duration has successfully elapsed.
  • Operates reliably within a broad ambient temperature range of -20°C to +55°C (-4°F to +131°F).
  • Tolerates relative humidity levels up to 95% non-condensing within protected cabinet environments.
  • Maintains internal IP20 component protection when housed inside IP66-rated MiniPurge enclosures.
Description
EXPO ETM-IS51-113 is an intrinsically safe electronic timer module designed by Expo Technologies for precise timing control in enclosure purge and pressurization systems. Operating within certified hazardous area enclosures, the EXPO ETM-IS51-113 governs pre-start ventilation and timing sequences before electrical equipment is energized. Its solid-state electronic architecture ensures accurate cycle control under demanding industrial conditions.

Powered by an approved EPPS power supply configuration, the EXPO ETM-IS51-113 features dual BCD switches for accurate timer duration adjustment and four onboard LEDs for immediate visual status indication. The unit interacts directly with external enable switches and solenoid valve circuits to control purge cycles efficiently. Its compact plate-mounted design allows seamless integration into compatible MiniPurge ET system enclosures.

The EXPO ETM-IS51-113 is widely applied in industrial analyzer shelters, chemical processing facilities, and paint application plants where hazardous gas protection is mandated. Proper deployment requires confirming the complete system documentation, intrinsically safe power arrangements, and terminal connections prior to commissioning. Matching exact model suffixes ensures seamless fit and certified protection integrity during maintenance.
Alternative Names
ETM IS51 113 ETMIS51113 etmis51113 ETM-IS51113 ETM-IS51-113 EXPO ETM-IS51-113 Expo ETM-IS51-113 Timer Module
Technical notes
The EXPO ETM-IS51-113 requires an approved EPPS intrinsically safe power source; verify BCD switch timing settings, cable connections, and hazardous area certifications before commissioning or replacement.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How is the EXPO ETM-IS51-113 powered?
The EXPO ETM-IS51-113 is powered via an approved EPPS (Ex-certified power supply) arrangement specifically documented for Expo purge control systems.
How are timing intervals adjusted on the EXPO ETM-IS51-113?
Timing intervals on the EXPO ETM-IS51-113 are adjusted using onboard dual Binary-Coded Decimal (BCD) switches according to system documentation.
What visual indicators are provided on the EXPO ETM-IS51-113?
The EXPO ETM-IS51-113 features four surface-mounted status LEDs that display real-time timer operational status during the purge sequence.
Are ETM-IS51-113 and ETM-IS11-113 directly interchangeable?
No. While they share similar timing roles, the EXPO ETM-IS51-113 uses an EPPS power arrangement whereas the ETM-IS11-113 uses a battery pack; always verify individual power requirements.
What must be checked before replacing an EXPO ETM-IS51-113 module?
Before replacing an EXPO ETM-IS51-113, verify exact model suffix markings, BCD switch settings, wiring orientation, and power supply compatibility.
Can any similar electronic timer replace the EXPO ETM-IS51-113?
No, substituting unapproved timers invalidates hazardous area system safety certifications; only use exact certified EXPO ETM-IS51-113 units.