User Manual

65-2649RK-HC-04 M2A Tran smitter Op erator’s Manual 2
Specifications
Table 1 lists specificat ions for the M2A.
WARNING: When using the M2A, you must fo llow the instructions and warnings in
this manual to assure proper and safe operation of the M2A and to
minimize the risk of personal injury. Be sure to maintain and periodically
calibrate the M2A as described in this manual.
Table 1: M2A Specifications
Target Gas/Detection Range General Hydrocarbons (calibrated to propane):
0 - 100% LEL, 1% LEL increm ents
Alarm Settings (Alarm 1/Alarm 2) 10 %LEL/50 %LEL*
Construction (housing) Explosion-proof Junction Box, NEMA 4
Ar ea C lass i fi cat i on Explosi on -p roof for Class I, Groups B, C, and D
Samplin g Method Diffusion
Input Power 10 - 30 VDC
Controls • Three push button switches
• Three magnetic switches for non-i ntrusive calibration
Weight 5.5 lbs.
Signal Output • 4 to 20 mA with impeda nce maximums list e d below
-12 VDC input: 500 ohms impedance max
-24 VDC input: 1000 ohms impedance max
• RS-485 Modbus
Operating Temperature -40°C to 50°C
Accuracy ± 5% of reading or ± 2% of full scale (whichever is greater)
*
These are the RKI factory settings. You can change the alarm settings in Configuration Mode. See
“Viewing & Changing M2A Paramete rs” on page 22.