Redline RL-101 User manual

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10350 STATE HWY 30 College Station, TX 77845
[phone]
RL-101 Installation and Operation Manual
SAFETY MESSAGE
•It is important to follow all instructions in this manual.
•This device is to be installed by a trained professional
who is familiar with Redline Safety products.
•Read and understand all instructions before installation
or use of this equipment.
•Keep cover tight when circuits are alive.
•Test Instrument regularly to ensure it is operating
properly.
IMPORTANT SAFETY WARNING
Failure to follow all safety and operational instructions
may result in instrument damage, serious injury or
death.
Power Consumption and Voltage rating
RL101 instrument is powered by 6 AA batteries
(9VDC) internally.
360uA continuous consumption when the device is
operational.
INSTRUMENT HOUSING
This product is housed in a Limatherm Instrument Housing
Type XD-Iwin
CL. I. GR. A,B,C,D; CL.II. GR. E,F,G CL.III; TYPE 4X
CL. ZONE 1 Ambient TEMP -40C to 85C

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After installation provide a copy of manual to authorized personnel
OPERATIONS OVERVIEW
Modes
1. Normal Operation
2. NULL
3. Calibrate
4. Assign Head Address
5. Set Background Gas Level
6. Check Battery Voltage
7. Select Redline or WF784 Radio Message
8. Revision
9. Relay Test
10. Radio Signal Strength Input
11. Select Redline or WF784 Radio Message (same as step 7)
12. OFF
13. Startup

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Basic Operation
There are three main modes for the RL101 Head Unit. In addition, there is an OFF
mode and a Startup mode. When the unit is powered, there is a 30 second
(Startup) countdown during which some system values are displayed before going into the
Normal Operating mode.
To get to the second mode this is addressing. Press TEST to get to the third Mode, press TEST again
while in the 2nd Mode. Pressing TEST while in the 3rd Mode will get back into the 2nd mode or
addressing. Pressing MENU multiple times will get back to Normal Operating mode.
If left in any mode (except OFF), the unit will return to Normal Mode after three minutes.
When the Head unit changes modes, it will send a message to the Monitor.
Menu Reed
Test Reed
Up Reed
Down Reed
Buttons for changing
modes
Radio antenna
XBee Pro 2.4G Radio
Connector for RL-SSH
H2S Sensor Housing
9VDC in

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1. Normal Operation
The RL101 Head unit monitors the gas level. If the gas level is greater than or equal to the background
setting, the unit will send a message every 5 seconds; if less than the background setting, the unit will
send a message every 5 minutes. When the Rl101CB is in normal mode it will display a zero.
2. NULL
To place the Rl101 into NULL Mode press MENU button our use the magnet with the reed switch once
"NUL" will flash on the display. The RL101 Head unit monitors the gas level but does not send messages
when in NULL Mode. NULL Mode is used removing any errors in the amplifiers that may cause a gas
reading when there is no gas. Use the Up or Down buttons to adjust the readings to zero.
Press menu button or use the reed
once to enter “nul” mode

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3. Calibration
To place the Rl101 into CAL Mode press the MENU button twice "CAL" will flash on the display.
The RL101 Head unit monitors the gas level but does not send messages to the monitor when in
CALIBRATION mode.When calibration gas is applied, the unit will display the reading. Use the Up and
Down buttons to adjust the reading to match the value of the calibration gas. Pressing MENU will place
the unit in Normal Operation and will begin sending messages to the monitor.
4. Assign Radio (Head) to Channel
To access to this feature press TEST once, "Adr" will flash on the display when in that mode.
Use the UP and Down buttons to adjust the Address of the Head unit. There must be a corresponding
address set in the Monitor.
Press Menu button or
use reed switch twice to
enter “CAL” mode
Use the Up and Down buttons to
adjust the reading to match the value
of the calibration gas
Use the UP and Down buttons or reed
switch to adjust the Address of the
Head unit.
To access to this feature
press TEST button or use
reed switch once

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5. Set Background Gas Level
To access to this feature press TEST once then MENU once "brd" will flash on the display when in that
mode. (Default setting is 7) Use the Up and Down buttons to adjust the Background level.
When the gas level is equal to or greater than this number, the unit will transmit a message every 5
seconds; if less
than this setting, the unit transmit every 5 minutes..
6. Check Battery Voltage
This mode displays the condition of the batteries. To access to this feature press TEST once then MENU
twice "bat" will flash on the display when in this mode.
7. Select Redline message or 784 message
(This mode is new to revisions 2.0 or greater). If the RL101 sensor head is in the wrong setting of 784,
use the up or down buttons to change back to “Red”.
** if the RL101 sensor head is in 784 it will not communicate to the Redline Monitor**
.
8. Revision
This mode shows the revision of the software that is being used in the RL101 Head unit. To access press
TEST Twice.
9. Relay Test
To place the RL101 sensor Head in relay test mode press the TEST button twice and the MENU button
once “REL” will show on the display. Use the Up and Down buttons to adjust the PPM value to send in a
message to the Monitor.
The Monitor treats this PPM value in the same way it would treat an actual gas reading.
This will allow for the relays in the Monitor to be activated and shows that the Head unit
is communicating with the Monitor.

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10. Radio Signal Strength Input
To get to this mode press the TEST button twice and the MENU button twice "rIn" will then flash
in the display. This mode allows the Head unit and Monitor to exchange messages (this mode is disabled
when in the 784 mode since the 784 does not resend any messages). When the Head unit sends a
message, the Monitor knows that the Head unit is in this mode and resends the message. The
Head unit stays awake in order to receive this resent message. The Head unit measures the
strength of the signal and displays it (the maximum Value is 255); the units should work
properly until the signal level drops to about 50.
( Caution: since the radio stays awake for this test, the battery is being discharged much faster in this
mode, so try to spend as little time in this test as possible.)
The Head unit transmits a message once per second and the Monitor responds immediately, so
the test must be performed for at least one
second. The Head unit can be moved away from obstructions, up or down or pointed to get
the best reading. When the MENU button is pressed to leave this mode, the last reading
taken will be stored in memory; the stored reading will be included in the messages to the
Monitor, so this reading can be examined at the Monitor. If no Monitor is in range, the
readings will be very low or zero.
11. OFF
To put the Head unit in the OFF mode, press the TEST button for about 4 seconds. The
display will show "OFF".
This mode disables all transmissions by the Head unit. The unit will transmit a message every 5
minutes with no gas present or every 5 seconds when the gas level is equal to or greater
than the background setting. To reduce the battery discharge, the unit can be set in OFF
mode, where it will never transmit. To wake the Head unit, press MENU, Up or TEST, and the unit will
begin the start up sequence.
12. Startup
When the RL101 is powered or awakened, it will display several values, like gas type,
address and battery voltage, then the unit will count up to 30 seconds and go into normal operation.

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INSTALLATION
Important- before you install the Rl101 h2s head make sure you have read the basic operations
to ensure proper understanding of the product. Also check battery voltage to ensure Rl101 will function
properly.
When installing the Rl101 h2s Head make sure to calibrate the sensor head. Put the Head into “cal”
mode. When calibration gas is applied, the unit will display the reading. Use the Up and Down buttons
to adjust the reading to match the value of the calibration gas. ( # 3 in basic operations)
The Rl101 Head may be mounted 18 to 24 inches above the ground with the sensor housing pointed
down towards the ground. For best signal strength position the glass window in line of sight of the
Redline Monitor, also make sure there are no metal/nonmetal obstructions so signal will not be blocked.
MAINTENANCE
Redline Instruments recommends you check battery voltage every 90 days and Calibration of the head
every 30 days. Recommended battery replacement at 7.5VDC or lower, if battery is at 5.3VDC there will
not be sufficient power to transmit a signal. If your instrument is in need of repair you may send your
instrument to any of the redline location for repair. See website for location addresses. For
Troubleshooting assistance call the Redline office at [phone].