Rosemount 2120 - Page 12

August 2012
12
Quick Start Guide
8/16 mA electronics cassette (dark 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 cassette is also suitable for non-hazardous (safe) area applications. It can only be
interchanged with a NAMUR cassette
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
8/16 mA
12
3
+
Drives 4-20 mA Analog Input
I
ON
=
I
OFF
=
+
-
+
A certified intrinsically safe barrier
must be used to meet IS requirements
Ex
Ex
15 . .. 17 mA
7.5 … 8.5 mA
-
Earth
(Ground)
U
=
24 Vdc Nominal
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
+
> 15 mA
+
< 8.5 mA
+
> 15 mA
+
< 8.5 mA