4
Check that the sensor is reading then push it inside the Swagelok fitting in the pipe
cap and tighten the Swagelok one full turn after finger tight. Leave about one inch of
the sensor protruding from the Swagelok. Carefully attach the weight to the eyebolt on
the base of the sensor and lower the assembly into the stilling well until the pipe cap
sits firmly on top of the pipe.
The yellow vented readout cable can now be extended to a local readout location
where an optional terminal box can be used to enclose the end of the yellow vented
cable and the vent line moisture trap. If the readout location is remote from the weir
location then a blue un-vented cable can be used between the terminal box containing
the moisture trap and the readout location.
3. Taking Readings ___________________________________________________
3.1. Operation of the GK-403 Readout Box
The GK-403 can store gage readings and also apply calibration factors to convert
readings to engineering units, ie. inches or millimeters. Consult the GK-403
Instruction Manual for additional information on Mode "G" of the Readout. The
following instructions will explain taking gage measurements using Mode "B".
Connect the Readout using the flying leads or in the case of a terminal station, with a
connector. The red and black clips are for the vibrating wire transducer, the white and
green clips are for the thermistor and the blue for the shield drain wire.
1. Turn on the Readout. Turn the display selector to position "B". Readout is in
digits.
2. Turn the unit on and a reading will appear in the front display window. The last
digit may change one or two digits while reading. Press the "Store" button to
record the value displayed. If the no reading displays or the reading is unstable
see section 5 for troubleshooting suggestions. The thermistor will be read and
output directly in degrees centigrade.
3. The unit will automatically turn its-self off after approximately 2 minutes to
conserve power.
