Specifications

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3> MUTE/ENTER – use to choose the selection shown. Pressing when no selection is shown cycles among

MUTE 600 (seconds) / ALARM OFF / ALARM ON, as shown in the lower right of the display. This button

does not actually turn off the alarms, but just mutes the sounder.

4> UP – press at the same time as DOWN to display the menu. Then use to move up in the menu list.

5> DOWN – press at the same time as UP to display the menu. Then use to move down in the menu list.

B. Display

When in the normal mode of operation, the LCD display shows many points of information.

On the top line, the current time, day, date, and internal equipment temperatures are displayed for both the

internal temperature on the circuit board and for the HRM module. Keep in mind that these are the internal

temperatures of the equipment and not the outside ambient temperature. Internal temperatures within the

Bloodhound generally run about 10 degrees Fahrenheit higher than outside the case.

The second line is reserved for any alarm messages such as “Blocked Sample Line.” If there are no alarms to

show, the line will display the current job number, serial number, internal software version number and external

software version numbers. If you call technical support, these pieces of information may be asked of you.

The third line displays the Drill Depth title, the Rate Of Penetration (ROP) in minutes per foot, and the voltage

of the primary sensing element. The voltage number represents how much of the detected gas the instrument

sees. The higher the number, the more gas it will see. If the number is zero or low, an alarm will sound and

the error will show.

The fourth line displays the Drill Depth in large numbers followed by the Rate of Penetration in feet per hour,

followed by the voltage from the chromatograph sensing element.

The fifth line displays the extractor DC amps pulled from the Bloodhound. Amperage over 6 amps may

indicate that the extractor needs replacement. To the right of the amps, is the hydrogen sulfide content in

parts per million.

The sixth line shows the gas units title, followed by a display of the chromatograph pressure. Chromatograph

pressure is generally around 800 to 1200 millimeters of mercury (mmHg) depending on the chromatograph

column and the prevailing atmospheric pressure. If the Brain Board senses a low chromatograph pressure, an

alarm will sound to alert to notify the user to a possible chromatograph problem.

The seventh line shows the gas units, followed by the sample vacuum level used to draw in the sample gases

from the extractor. System vacuum is generally between –5 and –450 mmHg. Excessive vacuum will trigger

the system to alert the user to a vacuum problem or blockage of the sample line. The Bloodhound has enough

suction power to easily pull sample through a 1000+ ft of 1/4” OD tubing. To the right of the sample vacuum is

percent carbon dioxide.

The eighth line holds the current sample flow rate in liters per hour, followed by a scrolling screen that will

display general technical and current operational parameters, as follows:

USB and SD storage card operational status

Received Signal Strength Indicator (RSSI)

3G modem connection indicator

Chromatograph count down timer (CGT)

Digital attenuation level (%DA)

Mute status, “Alarm On”, “Alarm Off”, or ”Mute xxx”

WITS good or No WITS

If WITS data is present, it will then display bit depth “Bit xxxx.x”

If there is a present Ethernet connection it will display “ETHERNET xx”