ENMET SPECTRUM-RAL - Manual (Page 4)

ENMET Corporation S PECTRUM RAL
2
1.4 Check Instrument
Turn the instrument ON, by plugging into a standard 110 V AC wall outlet and attach to your compressed air line
system. In uncontaminated air, the display should read 0000 within ten seconds of turn-on.
Check display operations by pressing the OPTION and SELECT switches as described in Figure 1.
The SPECTRUM-RAL instrument is calibrated prior to shipment. However, it is advisable to apply a known source
of carbon monoxide to the instrument to verify the sensor has not been damaged during shipment.
If there is access to a source of CO in compressed air, such as in a calibration kit, expose the sensor to CO, and
observe that the instrument is responsive.
If the concentration of CO is greater than 10 ppm, the instrument indicates an alarm condition. Acknowledge the
alarm by pressing and releasing the right hand pushbutton, SELECT; this silences the audio alarm for four minutes
unless the concentration of CO is greater than 50
PPM .
Remove source of CO. After the display reads zero or close to it, turn the instrument off, by removing the power
adapter from the wall outlet.
If the instrument does not operate as described, contact ENMET customer service personnel immediately.
2.0 2.0 SPECTRUM-RAL Features and Installation Features and Installation
2.1 Features
The features of the SPECTRUM-RAL Carbon Monoxide monitor are shown in Figure 1. These are:
DISPLAY LCD indicates the gas concentration, or prompts for the operational and
maintenance menus
PUSHBUTTON
SWITCHES These switches are used to access and utilize the operational and maintenance menus.
There are two of these, as follows:
OPTION, the left hand switch.
SELECT, the right hand switch.
SENSOR HOUSING A small cylindrical turret on the display surface; the membrane of the
electrochemical sensor is exposed to the compressed air through the air supply line.
REGULATOR A pressure regulator with a gauge.
FLOWMETER Flowmeter with an adjustable valve, connected by tubing to the sensor housing.
VISUAL ALARM A red LED, which is ON whenever, the CO concentration is above the alarm point.
AUDIO ALARM A small horn, which is ON whenever, the gas concentration is above the alarm
point, until the alarm is acknowledged.
COVER Retained with four screws and removed to change the sensor and access the
terminal strip.
RELAY CONTACT
TERMINAL STRIP A terminal strip inside the enclosure that enables access to the alarm relay contacts.
See Figure 2.