Model EP-311/313
Technical Information
TI.EP311/313-01
7400 Flying Cloud Drive • Minneapolis, MN 55344-3720 • USA
800-843-5116 • 612-835-1626 • Fax 612-829-5331
sales@mamacsys.com • www.mamacsys.com
Electropneumatic Transducer
Accuracy*: ± 1% FS
Maximum Supply Pressure: 40 psig
Pressure Differential: (Supply to Branch) 0.1 psig
Supply Voltage: 18-28 VAC/VDC
Supply Current: 150 mA
Enclosure: 18 Ga C. R. Steel Chassis
Finish: Baked on enamel-PMS2GR88B
Compensated Temp Range: 25ºF-150ºF (4ºC-65ºC)
Conformance: EMC Standards EN50082-1(1992)
EN55014(1993)/EN60730-1(1992)
T. C. Error: ±0.025%/ºF (.03%/ºC)
Media Compatibility: Clean dry air or any inert gas
Port Connection: 1/4”OD poly tubing
Environmental:10-90%RH Non-Condensing
Termination: Screw terminal block
Wire Size: 12 Ga max.
Imput Impedance: 301 ohms (4-20 mA)
10K ohms (0-5/0-10 VDC)
Weight: 1.0 lbs. (.45 kg)
*Includes non-linearity, hysteresis and non-repeatability
FOR ADDITIONAL INFORMATION
SEE EP-311/313 DATA SHEET
SPECIFICATIONS
MANUAL
OVERRIDE
INSTALLATION
Inspection
Inspect the package for damage. If damaged, notify
the appropriate carrier immediately. If undamaged,
open the package and inspect the device for
obvious damage. Return damaged products.
Requirements
•Tools (not provided)
- Digital Volt-ohm Meter (DVM)
- Appropriate screwdriver for mounting screws
- Appropriate drill and drill bit for mounting screws
• Appropriate accessories
• Two #8 self-tapping mounting screws (not
provided)
• Training: Installer must be a qualified, experienced
technician
Warning:
• Do not use on oxygen service, in an
explosive/hazardous environment, or with
flammable/combustible media.
• Disconnect power supply before installation to
prevent electrical shock and equipment damage.
• Make all connections in accordance with the job
wiring diagram, and in accordance with national
and local electrical codes. Use copper conductors
only.
Caution:
• Use electrostatic discharge precautions (e.g.,
use of wrist straps) during installation and wiring
to prevent equipment damage.
• Do not exceed ratings of the device.
Mounting
The EP-311/313 must be mounted in an upright position so that
the ports are facing upward and the gauge can be easily read.
1. Select the mounting location.
2. Mount the transducer on a vertical surface with three #8 self-
tapping screws (not provided).
3. Pull wires through the bottom of the device and make necessary
connections.
4. Make the necessary pneumatic connections.
Wiring
Use maximum 12 AWG wire for wiring terminals. Use flexible 1/4”
O.D. poly tubing for main and branch pneumatic connections. Refer
to Figure-1 and Figure-2 for wiring configurations and Figure-4
through Figure-6 for jumper designations.
Caution:
• Main supply pressure must not exceed 40 psig.
• A minimum of 6 to 10 feet (1.8 to 3.0m) of tubing should be
between the unit and the actuator.
• For 24 VAC supply voltage, ensure that the hot and neutral are
not reversed. If more than one unit is being powered form the
same transformer, the hot and neutral should be the same for
each unit.
Note: The gauge on the unit is for indication only. The unit’s
calibration is more accurate than the accuracy of the gauge.
!
311 (without)
315 (3-15 psig)
313 (with)
020 (0-20 psig)
RANGE
