Chapter i, Rmld-is system specifications – Heath Consultants Remote Methane Leak Detector Intrinsically Safe (RMLD-I) User Manual
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Chapter I
RMLD-IS System Specifications
Detection Method:
Tunable Diode Laser Absorption Spectroscopy (TDLAS)
Measurement Range:
0 to 99,999 ppm-m
Sensitivity:
5 ppm-m at distance from 0 to 50 ft (15 m) 
10 ppm-m or better from 50 to 100 ft (15 to 30 m) 
Detection Distance:
100 ft (30 m) nominal. Actual distance may vary due to 
background type and conditions 
Beam Size:
Conical in shape with a 22” width at 100 ft. (56 cm at 30 
m) 
Detection Alarms Modes
Digital Methane Detection (DMD):
Audible tone relative to concentration when 
detection threshold exceeded. 
Adjustable Alarm Detection Threshold from 0 to 
255 ppm-m 
Pure Tone: 
 
Continuous audio tone relative to concentration
System Fault Warning
Audible tone and indication on the display
Self Test & Calibration
Built-in Self-Test and Calibration function verifies 
operation and adjusts laser wavelength for maximum 
sensitivity. Test gas cell integrated with carrying case. 
Compliance:
EMC (EN61000-6-2, EN6100-6-4)
Laser Eye Safety: 
(CDRH, ANSI and IEC) 
IR Detector Laser: 
 
Class I
Green Spotter Laser: 
 
Class IIIa; Do not stare into beam or view directly
with optical instruments.
Display:
Large easy to read backlit LCD (.75” Numeric)
Operating Temperature
0° to 122° F (-17° to 50° C)
Humidity
5 to 95 % RH, non-condensing
Enclosure:
IP54 (Water splash and Dust resistant)
Instrument Weight:
 9 lbs (Transceiver 3 lbs, Controller 6 lbs) (4 kg; 1.3 kg, 
2.7 kg) 
Carry Case:
14 lbs; 34” x 9 ½” x 14” (6.4 kg; 86 cm x 24 cm x 36 cm)
Power Supply
Internal rechargeable Li-ion battery 
 
Battery Operating Life
8 hours at 32° F without backlight on (Internal battery)
Battery Charger
External, in-line, 100-240V~1.6A, 50-60 Hz
Shoulder Strap 
 
Single over the shoulder padded strap 
Ergonomic dual strap and belt system 
Intrinsic Safety:
Class 1 Division 1 Group D, T4 in accordance with 
UL 913 & CSA C22.2 No 157, MetLab Listing #E112840 
 
 
101296-0 RMLD IS MANUAL REV J
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