Data Sheet

C1 Controllers and Transmitters
D103291X012
Product Bulletin
34.3:C1
July 2014
3
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
Typical Ambient Temperature Operating Influence
Proportional Control only: ±3.0% of output span 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
Reset Control only: ±2.0% of output span 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: ±3.0% of output span 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
Housing
Designed to NEMA 3 (Weatherproof) and IEC 529
IP54 Specifications
Hazardous Area Classification
Complies with the requirements of ATEX Group II
Category 2 Gas and Dust
Construction Materials
See tables 2, 3, and 6
Approximate Weight
8.2 kg (18 pounds)
NOTE: Specialized instrument terms are defined in ANSI/ISA Standard 51.1 - Process Instrument Terminology.
1. The pressure and 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 1. Available Configurations
DESCRIPTION
(1)
AVAILABLE CONFIGURATIONS
Pressure
Bourdon Tube Sensing Element
(Gauge Pressure Only)
Bellows Sensing Element
Gauge Pressure Differential Pressure
Proportional controller
C1P C1B
C1D
Proportional-plus-reset
controller
Without anti-reset windup
With anti-reset windup - - -
Differential-gap controller - - -
Transmitter C1D
1. See figure 4 and 5 for construction details.
Features (continued)
n Field Reversible—Switch action from direct to
reverse or vice versa without additional parts. As
illustrated in figure 3, transfer the reversing block to
the opposite side of the flapper, invert the
proportional band assembly and change the
feedback bellows tubing connections.
n Easy, More Accurate Adjustments—Make pressure
set point, proportional band, and reset changes
with simple dial-knob controls that help to assure
positive settings.
n Sensitive Response—Area ratio of large relay
diaphragm to small relay diaphragm permits small
nozzle pressure changes to induce much greater
output pressure changes.