Instruction Manual
D200163X012
4660 Pressure Pilot
May 2014
3
Table 1. Specifications
Available Configurations
High‐low, low‐only, or high‐only set point capability
Input Signal
Type: Process pressure sensed with Bourdon tube
Bourdon Tube Ratings: See table 2 or 3
Overpressure Protection: Maximum allowable
emergency process pressures and maximum
allowable process pressures to ensure set point
readjustability are shown in table 4
Output Signal
Zero or full supply pressure (automatically resets)
Supply Pressure(1)
Normal Operating Pressures: 1.4 to 4.4 bar
(20 to 65 psig)
Medium: Air or natural gas
Air: Supply pressure must be clean, dry air that meets
the requirements of ISA Standard 7.0.01. A maximum
40 micrometer particle size in the air system is
acceptable. Further filtration down to 5 micrometer
particle size is recommended. Lubricant content is
not to exceed 1 ppm weight (w/w) or volume (v/v)
basis. Condensation in the air supply should be
minimized
Natural Gas: Natural gas must be clean, dry, oil‐free,
and noncorrosive. H2S content should not exceed 20
ppm.
Steady‐State Air Consumption(2)(3)
Output Signal at Zero:
≤0.134 normal m3/hr (≤5 scfh)
Output Signal at Full Supply Pressure: ≤0.00134
normal m3/hr (≤0.05 scfh)
Set Point Adjustments
Continuously adjustable between 3 and 97% of
Bourdon tube rating; see table 2 or 3 for ranges
Performance in Percentage of Bourdon Tube
Rating
Repeatability: ≤0.25%
Set Point DPmin (see table 2 or 3)
Single High‐Low Unit: 10% for up to 172.4 bar (2500
psig) Bourdon tubes; 15% for 344.8 and 517.1 bar
(5000 and 7500 psig) Bourdon tubes
Low‐Only and High‐Only Pair: 3%
Trip‐to‐Reset Zone (see table 2 or 3): ≤1.5%
Exhaust Capacity
Cg≥15
Pilot Supply Flow Requirement(2)
Pilot requires minimum of 4.02 normal m3/hr
(150 scfh) to activate relay
Operating Conditions(1)
Condition Normal Operating
Limits
Nominal
Reference
Ambient
temperature -59 to 71C (-75 to 160F) 21C (70F)
Operating Influences on Switch Point Sensitivity
Supply Pressure: ≤0.05% of Bourdon tube rating for a
10% change in supply pressure
Ambient Temperature: ≤2% Bourdon tube rating
throughout normal operating limits with nominal
reference
Time: ≤1% of Bourdon tube rating over 30 days at
ambient temperature nominal reference
Process Pressure: Range shift or set point drift can
occur if process pressure exceeds Bourdon tube
rating
Pressure Connections
1/4 NPT internal
Mounting
Panel, rack, pipestand, or actuator
Hazardous Area Classification
Complies with the requirements of ATEX Group II
Category 2 Gas and Dust
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