Kobold DRF34 Series Installation instructions

Precautions
•Please read the entire manual prior installing this
product. These instructions include information on
the DRF34 and DRG26 pressure gauge with
switches. Refer to the part number label on the instru-
ment housing to verify the exact model number.
•User’s responsibility: These instruments are
designed for use in a wide variety of applications. It is
however, the user’s responsibility to ensure the suit-
ability of the device with respect to a specific applica-
tion. Additionally, it is the user’s responsibility to
ensure the unit is properlyinstalled and tested priorto
operation.
•Proper Installation and Sealing: Always use a
proper thread sealant with all installations. Be sure
not to overtighten fittings. Test for leaks prior to oper-
ating the instrument.
•Wiring and Electrical: For units with switches,
check the current and voltage requirements for
the load to be controlled. Ensure that they do not
exceed the maximum specified switch ratings.
•Temperature and Pressure: Under no circum-
stances should the maximum ratings of operating
temperature and pressure be exceeded. Doing so
can result in equipment damage and personnel
injury.
•Material Compatibility: Ensure that the media
contacted parts are made of a material which is
chemically compatible with the process media.
Ensure that the housing material is compatible
with the ambient environment. Failure to do so
can result in equipment damage caused by chem-
ical attack.
Series DRF34/DRG26 Pressure Gauge
Installation/Operation Instructions
KOBOLD Instruments Inc. 1801 Parkway View Drive Pittsburgh,PA 15205
Phone [phone] • Fax [phone] www.koboldusa.com
Electrical Connections:
All electrical connections are made via a weather proof 90°
angle connector plug on the side of the indicator housing. Con-
nections are made via numbered screw terminals inside the con-
nector. It is recommended that a multi-conductor jacketed cable
be used. The outside diameter of the jacket should be large
enough to ensure that the weather-tight cable gland on the plug
can be tightened down snugly.
Table 1 (back of page) lists the part number suffixes, the switch-
ing functions and the connection terminal numbers to be used for
the various switch configurations. Check your part number with
our catalog specifications to verify the type of switches you have.
1
2
3
456
Terminal Housing
Switch Adjustment:
For units which have switches, adjust the switch setpoint as follows:
• Remove the adjusting tool from the rear of the angled electrical connector.
• The switch point indicators are the ones with the red tips. Adjustment is made by inserting the adjusting tool into the
socket at the center of the dial face and pushing down on the spring loaded adjusting arm. By then rotating the adjusting
tool, the arm will contact the switchpoint indicators and allow them to be moved to the desired switchpoint.
• When setpoint adjustment is complete, re-install the adjusting tool into the back of the angled connector.
Manual-DRF34-DRG26_8-01
FM Rev. 8/3/01

Specifications
Range: Per part number and catalog specifiaction
Accuracy:
20 PSIG Full Scale or Less: ±1.6% of Full Scale
30 PSIG Full SCale or More: ±1.0% of Full Scale
Fittings: 1/2” NPT
Wetted Parts:
DRG26: 316Ti Stainless Steel
DRF34: Brass, Bronze, Copper
Housing Diameter: 4” of 6.3”
Housing Materials:
DRG26: 304 Stainless Steel
DRF34: Aluminum standard, optionally 304 Stainless Steel
Movement:
DRG26: 316 Ti Stainless Steel
DRF34: Brass
Switch Ratings:
Maximum Voltage: 250 VAC
Maximum Current: 0.6 amps
Maximum Power: 10 w/18 VA
Electrical Protection:
Unfilled Housings: NEMA 3R
Oil Filled Housings: NEMA 4
Table 1: Switching Options and Wiring Terminal Numbers
Contact Type Functional Description Wiring Connections
(terminal number designations)
Sliding Magnetic
S11 M11 Both contacts closed when temperature is above setpoint 1 = First Contact
2 = Second Contact
3 = Common
S12 M12 First contact closed when temperature is above setpoint
Second contact open when temperature is above setpoint 1 = First Contact 2 = Second Contact
3 = Common
S21 M21 First contact open when temperature is above setpoint
Second contact closed when temperature is above setpoint 1 = First Contact 2 = Second Contact
3 = Common
S22 M22 First contact open when temperature is above setpoint
Second Contact open when temperature is above setpoint 1 = First Contact 2 = Second Contact
3 = Common