Data Sheet


LEL Infrared

Gas Detector

TA-2100 Methane Infrared Gas Detector

Mil-Ram's New RS 485/4-20mA 3 or 4-Wire smarter Transmitter for Methane LEL Gas Detection. Reliable detection of Methane gas utilizing industry proven NDIR dual-chamber infrared sensor technology. Characterized by long term stable operation & performance.

Features: Methane Infrared LEL Gas Detector

no false alarms Infrared (NDIR) gas sensor technology
Self-Calibration adjusts span monthly based on sensor life curve
Auto-Gas Calibration, non-intrusive, hands-free, magnetic switches
Not affected by temperature -40 deg C to +65 deg C, stable by design
LCD display - 12 characters x 2 lines. Provides user interface with magnetic switches - no dip switches
Offsite sensor calibration with memory chip embedded in sensor
Peak value, 15-min. TWA, Remaining Sensor Life, Replace Sensor indication and number days since last gas calibration
Optional Relay Module in same enclosure with low, mid, high and fault relays
Can be used with Mil-Ram's Wireless Telemetry System
Continuous advanced Diagnostics

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Specifications: Methane Infrared LEL Gas Detector

Detection Range 0-100% LEL (lower explosive limit)
(0-100% Volume Methane available)
Resolution 1% LEL Methane
Response Time <30 sec to 90% of final reading
Recovery Time <30 sec. to 90% recovery
Temperature Range -40 deg.C to +65 deg.C
Humidity Range 0-95% RH, non-condensing, continuous
Zero Drift <1% of full-scale
Power Requirement 12-30VDC; 1.82W @24VDC
Output 4-20mA linear. Optional Modbus RTU. Optional Relays; low, mid, high & fault.
Long life >5 years typical under normal operating conditions

LEL Lower Explosive Limit: The minimum concentration of a particular gas (or vapor) in air necessary to support combustion. Below the LEL level, the mixture is too lean to burn. Industrial type Combustible or LEL detectors typically provide measurement in the 0-100 %LEL range. The LEL may also be referred to as the LFL or Lower Flammable Limit.

Methane is a colorless, odorless gas at room temperature and standard pressure. Methane is the principle component in natural gas. The familiar smell of commercial natural gas is related to the addition of an odorant (typically mercaptan or sulfide compounds) as a safety measure. Methane is highly flammable with a lower explosive limit LEL of 5% and upper explosive limit UEL of 15% by volume. Methane CAS #74-82-8.

Gas Detectors - Fixed

Model TA-2100
smarter Gas Detector
(3 or 4-wire)

Model TA-2100
smarter Gas Detector
(Graphic Display)

Model TA-2102
smarter Gas Detector
(Loop Powered)

Economical Gas Detector
(without Display)

Gas Alarm
(Integral Alarms)

Open Path Gas Detectors

Control Panels

Digital Network Panels
Wall Mounting: TA-2016MB
Rack Mounting; TA-2016MB

Analog Panels

TA-2000 Six Channel
TA-2002 Two Channel
TA-2001 One Channel

Hybrid Panel

Gas Alarm
(Integral Alarms)

Alarm Stations

Hazardous/Non-Hazardous Areas