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This
is an intelligent electropneumatic positioner that conforms
to field equipment communication standard HART, which
is a world standard.
It permits easy and positive digital adjustment of positioner
response characteristics and zero and span from a host
equipment mounting DDL or from an HHC (Hand Held Communicator).
Furthermore, with 3-key calibration executed by a pushbutton
built in the positioner, it is possible to set principal
items by unit positioner, without need for HHC or the
like.
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It can be mounted to an actuator
of any of single action type, double action type, rotary
type and linear type, and it operates with a 4-20mA instrumentation
signal and compressed air. Therefore, it is a positioner
of broad universality, and it is capable of transmitting
self-diagnosis information and others besides valve opening
and open/close limit signals to a host equipment that
conforms to HART.
KOSO is now developing FF dealing equipment, which digitalizes
up to control signals and conforms to Fieldbus Foundation
Standards.
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| Series |
EP1000
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| Applicable Actuators |
Single and double acting actuators
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| Input Signal |
4 to 20mA DC (adjustable to 1/4 split
range)
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| Power supply |
2-Wire type
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| Input impedance |
500Ω at 20mA (Input voltage
less than 10V)
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| Characteristic |
Linear (Desired characteristic settable)
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| Pilot valve |
Non-bleeding type
Single acting and double acting types are available
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| Air supply |
140 to 700kPa
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| Air consumption |
Output air pressure 50%
5Nl/min at 140kPa air supply
15Nl/min at 400kPa air supply
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| Max. capacity |
Capacity when output is atmospheric
venting
175Nl/min at 140kPa air supply
400Nl/min at 400kPa air supply
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| Performance |
For single acting actuator
Linearity : +/-1.0% of FS.
Hysteresis : 0.5% of FS.
Response level : 0.1% of FS.
Repeatability : 0.2% of FS.
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For double acting actuator
Linearity : +/-1.5% of FS.
Hysteresis : 0.8% of FS.
Response level : 0.2% of FS.
Repeatability : 0.3% of FS. |
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The above represents the performance
of the positioner on an actuator without a valve. For
the performance of the complete unit with a valve and
an actuator, see KOSO STANDARD SPECIFICATION.
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| Calibration |
1 button calibration
Calibration by positioner alone.
Own program
with Note PC or Disktop PC
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| Self diagnosis items |
Air supply check/Eath unit's function
check/Over load check
Fail position for breakdown selectable
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| Air connection |
Rc 1/4
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| wiring connection |
G 1/2
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| Ambient temperature |
Standard type : -20 to 80°, Explosion
type : -20 to 60°
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| Ambient humidity range |
10 to 90% RH
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| Enclosure |
Weather proof type (IP65), Explosion
proof type (ExdCT6)
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| Standard anicillary |
Auto-Manual change
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| Housing material |
Aluminum alloy
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| Coating |
Epoxy resin group paint
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| Coating colors |
Body : Dark green, Cover : Light gray
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| Apporox. Weight |
2.6kg
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| Optional specifications |
Available upon request
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| Position transmitter |
4 to 20mA 2-Wire type
Power source required in addition to input signal.
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| Limit switches |
Open/Shut
Open collector type
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| Self diagnosis indication |
diagnosis result on LED
Separate power supply required
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| wiring connection |
1/2 NPT
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| Air connection |
1/4 NPT
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