C1 Controllers and Transmitters
Instruction Manual
September 2009
4
Table 1. Specifications (continued)
Ambient Operating Temperature Limits
(1)
J Standard Construction: −40 to 71_C (−40 to
160_F)
J High Temperature Construction: −18 to
104_C (0 to 220_F)
Anti−reset windup (differential pressure relief) and
process pressure gauge options are only
available in the standard construction
If the process temperature is outside the ambient
operating range of the controller, the length of the
capillary tube run from the sensor point to the
controller process input may be adjusted to
protect the controller from the process
temperature
Typical Ambient Temperature Operating
Influence
Proportional Control only:
Output pressure changes $3.0% of sensing
element range for each 28_C (50_F) change in
temperature between −40 and 71_C (−40 and
160_F) for a controller set at 100% proportional
band
Proportional−Plus−Reset Control:
Output pressure changes $2.0% of sensing
element range for each 28_C (50_F) change in
temperature between −40 and 71_C (−40 and
160_F) for a controller set at 100% proportional
band
Transmitters only:
Output pressure changes $3.0% of sensing
element range for each 28_C (50_F) change in
temperature between −40 and 71_C (−40 and
160_F) for a transmitter set at 100% span
Hazardous Area Classification
Complies with the requirements of ATEX Group II
Category 2 Gas and Dust
Refer to figure 25 for location of ATEX marking
Approximate Weight
8.2 kg (18 pounds)
Options
Case pressure tested to 0.14 bar (2 psig)
Declaration of SEP
Fisher Controls International LLC declares this
product to be in compliance with Article 3
paragraph 3 of the Pressure Equipment Directive
(PED) 97 / 23 / EC. 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.
1. The pressure/temperature limits in this document and any applicable standard or code limitation should not be exceeded.
2. Normal m
3
/hr: normal cubic meters per hour (m
3
/hr, 0_C and 1.01325 bar, absolute). Scfh: standard cubic feet per hour (ft
3
/hr, 60_F and 14.7 psig).
3. To convert from air flow rate to natural gas flow rate multiply by 1.29.
4. An adjustable differential gap (differential gap controllers) is equivalent to an adjustable deadband.
Table 2. Available Configurations
TYPE NUMBER
DESCRIPTION
Bourdon Tube Sensing
Element (Gauge Pressure Only)
Bellows Sensing Element
Gauge Pressure Differential Pressure
Proportional−only controller
C1P C1B
C1D
Proportional−plus−reset controller
Without anti−reset windup
With anti−reset windup − − −
Differential gap controller − − −
Transmitter C1D
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