MTS Sensors
Level Plus
®
Liquid-Level Sensors - M-Series Model MR Analog Transmitter
Brief Operation Manual for Safe Use, Document Number: 551409 Revision A, 04/13 (US)
3
Model Number
Identification
Model MR Brief Operation Manual for Safe Use
Model Number Identification, Marking & Entity Parameters
LENGTH
(Order length based on unit of measurement)
=
13-17
=
Rigid or Sanitary transmitter: 508 mm (20 in.) to 7620 mm (300 in.)
= Teflon: 508 mm (20 in.) to 6096 mm (240 in.)
=
Flexible transmitter: 3048 mm (120 in.) to 12,192 mm (480 in.) except ATEX IIB max. length 7620 mm (300 in.)
SPECIAL
=
18
S
=
Standard product
E
=
Engineering special (not affecting agency controlled parts or features)
Marking
Model
Housing Type [5]
Material of Construction [8]
ATEX marking
MR
F, G, H, J K
1, 2, 3
II 1/2 G Ex ia IIA T4 Ga/Gb
A
II 2 G Ex ia IIA T4 Gb
P, R, S T,U
1, 2, 3
II 1/2 G Ex ia IIB T4 Ga/Gb
A
II 2 G Ex ia IIB T4 Gb
Table 1.
Approval
marking
Entity Parameters
Entity parameters
ATEX
Ui = 28 Vdc
∑Ii = 118 mA per loop (circuit)
Ci = Negligibly low
Li = 0.2 mH per loop (circuit)
Table 2.
MR entity parameter references
Total power consumption ∑Pi
Ambient temperature at the electronics
1.3 W
-20 to +40 °C (electronics)
1.2 W
-20 to +60 °C (electronics)
1.0 W
-20 to +80 °C (electronics, functionality up to 71 °C)
-
-40 to +125 °C (sensing element)
-
-40 to 105 °C (temperature sensor)
Table 3.
Power and ambient temperature ranges
