AirLink 7010 Gas Monitor Operator’s Manual
Chapter 1: Introduction • 5
Chapter 1: Introduction
Overview
This chapter briefly describes the AirLink 7010 Gas Monitor. This chapter also describes the
AirLink
7010 Gas Monitor Operator’s Manual
(this document). Table 1 at the end of this chapter lists the
specifications for the AirLink 7010.
About the AirLink 7010 Gas Monitor
The AirLink 7010 can receive up to 32 WireFree sensors (depending on the radio's configurations) or
up to 28 WireFree sensors and up to four 4-20mA wired sensor assemblies. All configured channels
are displayed every three seconds (scanned). When one channel indicates a gas reading, the monitor
locks to that channel. If two or more channels are indicating a gas reading, the monitor scans those
channels every three seconds. The user can manually scan channels by pressing
SCAN
or
ADD
to
move forward through channels or
SUB
to move backward through channels. The scanned channel
will stay at that channel for one minute and then go back to normal scanning.
All channels can be configured to detect WireFree gas sensor assemblies, or up to four wired (4-
20mA) sensor assemblies. The last four channels (29-32) can be configured to accept a 4-20mA signal.
By default, the system comes with the first 28 channels configured for WireFree sensor assemblies and
the last four channels configured for wired sensor assemblies. Any channel can be turned “off”, and
any channel can be configured to any valid WireFree address, 1-255.
There are four 5 Amp relays with 4 Amp fuses. The fourth relay may be configured as a Fault relay.
This Fault relay will activate if any Fault is generated by the monitor or if any sensor that the monitor
is configured to monitor goes into Fault. The Fault relay is removed from any further configurable
options from Channel Setup—leaving only three relays for each channel. All relays can be configured
to be either latching or auto resetting. The relays can be configured with different set points for alarm
conditions for each channel, allowing each channel to have their own gas level set points.
An optional strobe and/or horn can be ordered. The strobe is installed on the top of the housing and is
wired into the first relay. The horn is installed on the bottom of the housing and is wired into the
second relay.
All relays have a 10% of value of hysteresis on the set points. This prevents the relays from rapidly
switching on and off during a potentially jumpy gas sensor reading. Once the threshold value of a relay
is reached, the relay is activated. However, the AirLink 7010 screen will not lock on the channel with a
triggered relay while the reading is below the Relay Set Point (the user must scroll through the
channels to find the channel with a triggered relay). When the gas reading decreases below the
threshold value, the relay must be 90% of the initial threshold value to deactivate.
