Instruction Manual
D200126X012
2502 Controllers
June 2017
4
Table 1. Specifications (continued)
Hazardous Area Classification
2502 controllers comply with the requirements of
ATEX Group II Category 2 Gas and Dust
Operative Ambient Temperatures
Standard Construction:
-40 to 71
_
C (-40 to 160
_
F)
High Temperature Construction:
-18 to 104
_
C (0 to
220
_
F)
Declaration of SEP
Fisher Controls International LLC declares this
product to be in compliance with Article 4 paragraph
3 of the PED Directive 2014/68/EU. It was designed
and manufactured in accordance with Sound
Engineering Practice (SEP) and cannot bear the CE
marking related to PED compliance.
However, the product
may
bear the CE marking to
indicate compliance with
other
applicable European
Community Directives.
NOTE: Specialized instrument terms are defined in ANSI/ISA Standard 51.1 -
Process Instrument Terminology.
1. Control and stability may be impaired if this pressure is exceeded.
2. The pressure/temperature limits in this document, and any applicable standard or code limitation should not be exceeded.
3. Normal cubic meters per hour (m
3
/hr) at 0
_
C and 1.01325 bar. Scfh=standard cubic feet per hour at 60
_
F and 14.7 psia .
Figure 2. Guidelines for Use of Optional Heat Insulator Assembly
USE INSULATOR (CAUTION! IF AMBIENT DEWPOINT IS ABOVE
PROCESS TEMPERATURE, ICE FORMATION MAY CAUSE INSTRUMENT
MALFUNCTION AND REDUCE INSULATOR EFFECTIVENESS.)
0
20
40
60
80
100
120
140
160
0
10
20
-18 -10
30
40
50
60
70
71
593
500
400
300
200
100
0
0
400
800
110
0
-20
-29
NO INSULATOR NECESSARY
AMBIENT TEMPERATURE
(
_
C)
STANDARD CONTROLLER OR TRANSMITTER
AMBIENT TEMPERATURE (
_
F)
HEAT INSULATOR
REQUIRED
TOO
HOT
NOTE: FOR SERVICE BELOW -29
_
C (-20
_
F) CONTACT FACTORY.
PROCESS TEMPERATURE ( C)
_
PROCESS TEMPERATURE ( F)
_
B1413‐1
0
20
40
60
80
100
120
140
200
0
10
20
-18
-10
30
40
50
60
70
93
593
500
400
300
200
100
0
0
400
800
110
0
-20
-29
NO INSULATOR NECESSARY
AMBIENT TEMPERATURE (
_
C)
HIGH‐TEMPERATURE CONTROLLER OR TRANSMITTER
AMBIENT TEMPERATURE (
_
F)
HEAT INSULATOR
REQUIRED
TOO
HOT
PROCESS
TEMPERA
TURE ( F)
_
180
160
80
90
USE INSULATOR (CAUTION! IF AMBIENT DEWPOINT IS ABOVE PROCESS
TEMPERATURE, ICE FORMATION MAY CAUSE INSTRUMENT MALFUNCTION AND
REDUCE INSULATOR EFFECTIVENESS.)
Installation
2502 controllers are used in combination with 249 sensors, and unless ordered separately, the controller will be
attached to the sensor.
WARNING
Wear protective eyewear, gloves and clothing whenever possible when performing any installation operations to avoid
personal injury.
Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.
