8
A100h
JANUARY 2020
State
Switch 1
(Tap)
Switch 1
(Hold)
Switch 2
(Tap)
Switch 2
(Hold)
Warm-up
-
-
Normal
Start Zero
Calibration
Start Scan Calibration
Low Alarm
Mute Buzzer
Ack. Latched Alarm
High Alarm
Mute Buzzer
Ack. Latched Alarm
Offline
-
-
Fault
Mute Buzzer
Ack. Latched Alarm
Negative Gas Fault
Mute Buzzer
Start San Calibration
Zero Cal. Fault
Acknowledge Fault
-
Span Cal. Fault
-
Acknowledge Fault
Enable
Bluetooth
®
Connectivity
Enable
Bluetooth
®
Connectivity
4. Once alarm thresholds have been exceeded,
relays should activate and digital signal outputs
should transmit the gas concentration.
5. Turn off gas flow from cylinder and remove
calibration adapter from detector.
6. Allow detector to recover/stabilize before
returning to normal operation (green LED lit).
VERIFYING ANALOG SIGNAL
The Hansen Gas Detector features a single
configurable analog output. During normal operation
the analog output signal of the detector is proportional
to the detected gas concentration.
SWITCH FUNCTIONS
User interaction with the gas detector is accomplished
through the use of two magnetic switches located on the
bottom of each unit. To actuate a magnetic switch (referred
to as MAG#1 or MAG#2), apply the supplied magnetic
wand) to the relevant switch location as indicated below:
GENERAL CALIBRATION PROCEDURE
Ambient air can be used to zero the detector instead of
synthetic air only if the area is known to be free of the
target gas to which any detector may be cross-sensitive.
In this case, no cylinder or calibration adapter is needed
for zero adjustment. Otherwise follow the steps below
NOTE:
The gas detector MAY NOT be in an alarm or fault
condition during calibration. Acknowledge any alarms or
faults BEFORE attempting to begin the calibration process.
Except for CO2, calibration gas must be in a balance of air,
NOT nitrogen (Ni).
1. Fit calibration adapter to the sensing element on
the gas detector lid.
2. If using a variable flow regulator, adjust the gas
flow to approximately 0.3 L/min.
3. Hold magnet at MAG#l for >5 seconds
4. Apply zero gas
5. Tap magnet at MAG#l within 30 seconds or gas
detector will time-out
6. The LED will blink green-red, green-red-red, etc.
until calibration is complete.
7. Turn off gas flow from zero gas
Zero calibration can be aborted during step 6 by
holding the magnet at MAG#l for >5 seconds. If
calibration is unsuccessful orange LED blinks, in this
case tap MAG#l with magnet to discard calibration
attempt and start over.
After calibrating the zero adjustment, the span
adjustment should be calibrated. With calibration
adapter still connected and flow regulator still
adjusted to approximately 0.3 L/min:
1. Hold magnet at MAG#2 for >5 seconds. The LED
will blink green-green-orange when ready
2. Apply target gas at appropriate concentration
level
3. Tap magnet at MAG#2 within 30 seconds or
sensor will time-out
4. The LED will blink green-orange, green-orange-
orange, etc. until calibration is complete.
5. Turn off gas flow from calibration gas
Span calibration can be aborted during step 4 by
holding the magnet at MAG#1 for >5 seconds. If
calibration is unsuccessful LED blinks orange, in this
case tap magnet at MAG#2 to discard calibration
attempt.
After the calibration process is complete, allow the
sensor to recover and stabilize before the sensor
returns to normal operation. The green LED should be
lit for normal operation.
FIG. 10
START-UP SEQUENCE
After applying power, the instrument will go through a start-up sequence
{initialization, audible/visual test and
self-test sequence).
After start-up sequence completes, the instrument will enter a warm-up period to allow the
sensor element to stabilize before reporting a valid output.
1. Switch power on.
2. Observe the start-up sequence and warm-up phase:
• Green LED will blink at 0.5 HZ for about 5 minutes.
• Modbus flag for warm-up is set.
•
Buzzer is off.
• Relay state is "no alarm."
• Gas reading is invalid.
3. Observe normal operation:
• Green LED is steady on.
•
Modbus flag for warm-up is cleared.
•
Buzzer is off.
• Relay state is "no alarm."
• Gas reading is valid.
The sensor may also enter several special states, these are indicated below by the specific analog output levels
indicated:
MODE OF OPERATION
4-20mA
1-SV
0-SV
2-l0V
0-l0V
Instrument Fault
< 1.2 mA
< 0.3 V
N/A
<0.6V
N/A
Offline Mode/ Maintenance
3 mA
0.75 V
N/A
1.5 V
N/A
Drift below Zero
3.8mA
0.95V
N/A
1.9 V
N/A
Measuring Range Exceeded
20.5 mA
5.12 V
5.12 V 10.25 V
10.25 V
Fault on Analog Interface
>21 mA
> 5.25 V
> 5.25 V
> 10.5 V
> 10.5 V
VERIFYING ANALOG SIGNAL
The Hansen Gas Detector features a single configurable analog output. During normal operation the analog output
signal of the sensor is proportional to the detected gas concentration.
GAS CONCENTRATION
4-20mA
1-SV
0-SV
2-l0V
0-l0V
0%
4mA
lV
ov
2V
ov
50%
12 mA
3V
2.5 V
6V
5V
100%
20 mA
5V
5V
l0V
lOV
TABLE 6
FIG. 11
8b. Zero Adjustment
8a. General Calibration Procedure
8c. Span Adjustment
9. Bump Test
5. Installation
(Continued)
6. Connect Hansen Gas Detector to App
(User Discretion)
7. Operation Overview
STEP 3 |
Reinstall Sensor & Connect Lid
WARNING:
DO NOT leave excess cable inside of the gas detector
housing. Failure to comply may result in damage to the product.
IMPORTANT:
To achieve proper seal in the IP66 version, the lid
screws should be torqued to 15 to 20 lb
f
in (1.5 to 2.0 Nm).
1. Reinstall the rubber gasket
(IP66 version only)
. Ensure that it
is correctly seated by placing the side with two grooves face
down and the edge with two bumps on the top.
WARNING:
Except for CO
2
or O
2
sensors, ambient air may be used
instead of zero gas if the area is know to be free of the target gas
or any gases to which the sensor may be cross-sensitive.
3.
Begin zero adjustment:
APP:
Home Tab
Calibrate
scan barcode on gas
cylinder or manually enter values for zero gas.
MAG SWITCH:
hold
MAG#1
for >5-seconds. The LED
will blink green-green-red when the instrument is
ready.
4.
Apply zero gas
(or ambient air per warning above)
.
5.
Confirm the start of calibration:
APP:
press the
Start Zero
button.
MAG SWITCH:
tap
MAG#1
within 30-seconds or the
instrument will time-out and return to normal
operation.
6.
Complete zero adjustment:
APP:
app will countdown to completion. If calibration is
successful, proceed to Step 12.
MAG SWITCH:
the LED will blink green-red, green-
red-red, green-red-red-red, etc. until calibration is
complete. To abort, hold
MAG#1
for >5-seconds, turn
off gas flow and remove the calibration adapter. If
calibration is successful
(green LED)
, proceed to Step 12.
If calibration is unsuccessful
(LED blinks orange @ 2 Hz)
,
tap
MAG#1
to discard the calibration attempt and see
the user manual for troubleshooting.
7.
Turn off gas flow from zero gas.
8
. Replace zero gas with calibration gas in preparation for
span adjustment.
9.
Begin span adjustment:
APP:
scan barcode on gas cylinder or manually enter
values for calibration gas.
MAG SWITCH:
hold
MAG#2
for >5-seconds. The LED will
blink green-green-orange when the instrument is ready.
10.
Apply calibration gas at the concentration listed on the cal
gas concentration label
(located on top of the instrument)
.
WARNING:
The Hansen Gas Detector MAY NOT be in an
alarm or fault condition during calibration. Acknowledge
any alarms or faults BEFORE attempting to begin the
calibration process.
WARNING:
Except for CO
2
or O
2
sensors, calibration gas must be
in a balance of air, not nitrogen (N
2
).
IMPORTANT:
Calibration and / or bump testing requires the
calibration adapter kit (P/N 31-1037).
IMPORTANT:
At elevations higher than 6,560′ (2,000 m),
calibration will result in a lower reading. See the user manual
for additional information.
1. Fit calibration adapter to the gas detector lid.
IMPORTANT:
Default alias, passkey and unlock code can be
changed via the app’s configuration menu.
1. Enable Bluetooth
®
discovery by tapping
MAG #1
for 1-second.
(After 10-seconds, device will indicate that it is discoverable with
audible heartbeat until it has been paired, discovery has timed-out
or has been cancelled.)
2. Launch the app and click the Bluetooth
®
icon at the bottom of
the screen to initiate a scan.
3. Select the instrument
(default is “18TMAH”)
from the list of
available Bacharach gas detectors.
4. When prompted, enter the passkey
(default is “123456”)
.
5. Go to configure tab to setup device. When prompted, enter
unlock code to access device configuration.
(default is “1234”)
IMPORTANT:
The manufacturer of this product requires that a
bump test or calibration be performed following installation to
verify instrument functionality.
1.
Connect adapter and gas cylinder according to the
instructions in the General Calibration Procedure.
2.
If desired, disable / silence external annunciators
(e.g.,
shutdown valves, notification of authorities, etc.)
:
APP:
Home Tab
Calibrate
Bump
toggle
Take Offline
to disable communications to external devices.
MAG SWITCH:
Inform building personnel of test so that
external devices can be disabled / silenced.
3.
Apply a sufficiently high concentration of the target gas to
trigger alarms, but NOT pure refrigerant or hydrocarbons
(e.g., do not use a butane lighter)
.
4.
Once thresholds have been exceeded, relays should
activate, digital outputs should transmit the gas
concentration and:
APP:
gas concentration should be displayed, the
instrument status should be “Low Alarm” or “High Alarm”
and alarms states should be “On.”
MAG SWITCH:
LED status should display “Low Alarm” or
“High Alarm.”
5.
Turn off gas flow and remove the calibration adapter.
6.
Allow sensor to recover / stabilize before the instrument
returns to normal operation
(green LED)
.
2. Reconnect the ribbon cable from the sensor to the PCBA.
3. Ensure no cables are interferring with the sensor module and
close the lid.
4. Using a 5/32″
(4 mm)
hex key / allen wrench, tighten the lid
screws in an “X” tightening pattern:
2. If using a variable flow regulator, adjust the gas flow to
approximately 0.3 L/min.
The Hansen Gas Detector uses a smartphone application to
allow users to interface with the gas detector. To download the
app, scan here or visit
www.hantech.com/gas-detection
.
#
APP DESCRIPTION
1
Main Menu (App Settings)
2
Status (Gas Concentration)
3
Calibrate (Calibration / Bump Test)
4
Details (Instrument Information)
5
Disconnect Bluetooth
®
6
Restart Connected Device
7
Test Mode (LED / Buzzer / Relays /
Analog Output)
8
Device Configuration
9
Logs
11.
Confirm the start of calibration:
APP:
press the
Start Span
button.
MAG SWITCH:
tap
MAG#2
within 30-seconds or the
instrument will time-out and return to normal operation.
12.
Complete span adjustment:
APP:
app will countdown to completion. If calibration is
successful, proceed to Step 18.
MAG SWITCH:
the LED will blink green-orange, green-
orange-orange, green-orange-orange-orange, etc.
until calibration is complete. To abort, hold
MAG#2
for
>5-seconds, turn off gas flow and remove the calibration
adapter. If calibration is successful
(LED blinks green-orange-
red)
, proceed to Step 18. If calibration is unsuccessful
(LED
blinks orange @ 2 Hz)
, tap
MAG#2
to discard the calibration
attempt and see the user manual for troubleshooting.
13.
Turn off gas flow from calibration gas and remove the
calibration adapter.
14.
Allow sensor to recover / stabilize before the instrument
returns to normal operation
(green LED)
.
Part Number
Serial Number
Sensor Type
Max Range
PN: 1100-XXXX
SN: YYWW####
GAS: CO2
10000 PPM
STATE
OUTPUT
INPUT
LED
RELAY 1
RELAY 2
RELAY 3
Buzzer
MAG #1 TAP
MAG #1 HOLD
MAG #2 TAP
MAG #2 HOLD
Warm-up
OFF
OFF
OFF
Enable Bluetooth
®
Connectivity
―
Disable Bluetooth
®
Connectivity
―
Normal
OFF
OFF
OFF
Start Zero Cal.
Start Span Cal.
Low Alarm
ON
OFF
OFF
Mute Buzzer
Ack. Latched Alarm
High Alarm
ON
ON
OFF
Mute Buzzer
Ack. Latched
Alarm
Offline
OFF
OFF
OFF
―
―
Fault
OFF
OFF
ON
Mute Buzzer
Ack. Latched Fault
Negative Gas Fault
OFF
OFF
ON
Mute Buzzer
Start Zero Cal.
Zero Cal. Fault
OFF
OFF
OFF
Ack. Fault
―
Span Cal. Fault
OFF
OFF
OFF
―
Ack. Fault
TABLE 7
