Rosemount 2120 - Page 11

Quick Start Guide
11
August 2012
NAMUR electronics cassette (light blue label)
Note
 This cassette is suitable for Intrinsically Safe applications and requires an isolating
barrier. See “Product Certifications” on page 16 for Intrinsically Safe approvals
 This electronics cassette is also suitable for non-hazardous (safe) area applications.
It can only be interchanged with the 8/16 mA cassette.
 Do not exceed 8 Vdc
High level Dry = ON Low level Wet = ON
LED on continuously
LED flashes each
second
LED on continuously
LED flashes each
second
OPERATION MODE
Dry On Mode
Dry
Wet
Wet On Mode
Dry
Wet
Dry On Wet On
Seconds Delay
0.3 0.3
3
30
10
1
3
30
10
1
12
+-
EN 50227 / NAMUR
I
ON
= 2.2 ... 2.5 mA
I
OFF
= 0.8 ... 1.0 mA
+
-
A certified intrinsically safe
isolating amplifier to IEC 60947-5-6
Ex
Ex
8V
dc
Dry On Wet On
Seconds Delay
0.3 0.3
3
30
10
1
3
30
10
1
Dry On Wet On
Seconds Delay
0.3 0.3
30
10
3
30
10
1
3
1
+
-
>2.2 mA
+
-
<1.0 mA
+
-
>2.2 mA
+
-
<1.0 mA