User manual

MODEL
9830-OWS
DOCUMENT TYPE
USER MANUAL
DOCUMENT FILE NAME REV.
9830OWSUM14.DOC 1.4
CREATE DATE
04/08/2003
REV. DATE
12/22/2009 10:07 AM
PRINT DATE
12/22/2009 10:07:00 AM
HARDWARE REV.
1.0
SOFTWARE REV.
9820_06 and higher
Page 6 of 12
2.0 INSTALLATION
NOTE: If any damage to the instrument is found, please notify an Arjay Engineering
representative as soon as possible prior to installation.
Choose the mounting location in accordance with good instrument practice. Extremes of
ambient temperature and vibration should be avoided.
2.1 PROBES
Capacitance probes may be ordered at different lengths depending on the size and location of each
oil/water separator or sump. Most OWS probes are Teflon coated with an inactive 316ss sheath
covering the entire length of the probe with the exception of the last 4 inches. The length of the probe
is specified by the customer and is determined by the height of oil interface that the customer wants
be alarmed at. The exposed white Teflon portion of the probe tip is the active sensing portion so the
alarm point has to be within this 4” section.
2.2 PROBE INSTALLATION
Standard probe entry into a tank is via a 3/4" NPT opening (standard probes) or 1" NPT opening
(heavy duty probes). Flanges and concentric shields are available as options. The entrance
configuration may vary depending on the application requirements.
USE WRENCH ON LOWER HEX . The probe fittings are compression type with Teflon ferrules
assembled by applying torque between the two hex sections. The fittings are sealed at the factory to
provide a compression seal capable of withstanding high pressures. Once the fittings are opened
they cannot be reassembled without replacing the ferrules.
2.3 PULSE CARD INSTALLATION
Check that the pulse module circuit (PMC-2000) is installed into the probe head according to the
installation drawing. Both circuit mounting screws are required to insure a good electrical ground.
Check that the blue probe lead is secured to the PMC circuit terminal marked "P". (If coax cable is used
from the probe to the junction box then connect the center wire of the coax to “P” and the braided coax
shield to the ground screw in the junction box).
Wire the circuit card to the main control unit using two-wire shielded instrument cable 16-18awg
(EG.BELDON 8760). DO NOT run these wires along side of high voltage wires. Connect the + & -
terminals on the pulse card to the probe terminals marked + & - at the controller. Connect the shield of
the cable to the ‘S‘ terminal at the controller side only. Make sure that the PMC junction box is
electrically grounded.
CAUTION:
INSTALL PROBE WITH CARE: DAMAGE TO TEFLON SHEATH WILL CAUSE
MEASUREMENT ERRORS.