VICI D-4-I-TQI-R - Manual (Page 7)

6
Installation
General Precautions
• Do not use plastic/polymer or copper tubes for gas handling and
interconnectons. Use only stainless steel tubing with Valco gold-plated
ferrules.
• Do not turn the unit on until the helium discharge gas is flowing through
the detector.
• Do not shut off or disconnect the discharge gas when the detector is hot,
even if the unit is turned off. Turn off the discharge power switch and
allow the detector to cool down naturally before disconnecting or shutting
off the discharge gas.
• Do not cover the unit with materials or devices which would restrict air
circulation.
Mounting the Detector on the GC
1. Remove the FID flame tip.
2. Install the PDD on the FID heater block. Make sure you interpose the
silver seal.
3. Tighten the nut to secure the detector.
Pulser Module Installation
1. Mount the pulser module on the GC as shown below.
2. Connect +24VDC power to the pulser module from the GC.
PDD C ARD
puls
ed d
isch
arg
e m
odu
le
BIAS
TO PNEUMATIC
MODULE
PULSED DISCHARGE
MODULE
PDD CONTROL
CARD
DETECTOR
MOUNTING NUT
ELECTROMETER
GAS
INLET
Figure 3: Mounting the detector on the GC