RKI Instruments 35-3000RKA-10 - Manual (Page 5)

35-3000RK-10 PPM Hexane Sample Draw Detector • 5
Description
This section describes the components of the sample draw detector. It is a 4 to 20 mA type
detector head. The sample draw detector consists of the housing, flow system, and
detection system.
Figure 1: Component Location
Housing
The sample draw detector’s fiberglass housing is weather- and corrosion-resistant. It is
suitable for installation where general purpose equipment is in use.
The housing door is hinged on the left side and is secured by two latches on the right side.
The flowmeter and status LEDs are visible through a window in the housing door.
Four mounting feet are attached to the back of the housing (one at each corner). Use the
mounting feet to install the housing to a vertical surface. Use the two conduit hubs on the
bottom of the housing to make wiring connections.
An aluminum subpanel is mounted to the interior of the housing. The sample draw
detector’s internal components are mounted to the subpanel.
Factory Use Jumper Strip
Amplifier Plate
Load Voltage Pot
3/4" Conduit Hub, 2X
Detector
Terminal Strip
Mounting Foot, 4X
Flow Block
ppm Hexane
Detector
Interconnect
Terminal Strip
Detector/Amplifier
Terminal Strip
1-2 Hex
3-4 H2
Gas Select 1
3
4
2
P WR / S IG
S W B R
D E TE C TOR
SPAN
ZERO
Pilot LED
Flow Adjust Pot
Exhaust
Controller
Terminal Strip
Amplifier
- Test Point, Black
Gas Selection Jumper,
In Hexane Position
Factory Set Pots
Chamber
Not Used
Zero Pot
Span Pot
Inlet
Flow Alarm Setpoint
Adjustment Screw
Factory Use Jumper Strip
+ Test Point, Red
Hydrophobic Filter
(Behind Main
Circuit Board)
Main Circuit Board
Fail LED
Pump/Flow Switch
Terminal Strip
Bypass v alve
Flowmeter