Total
Customer Satisfaction is our primary objective at General
Monitors. Through presale technical seminars, electronic
documentation, customer product training seminars, maintenance
programs and the Technical Services Group, we want you
as a customer for life. Here you'll find a variety of
tools to assist you with our products.
What type
of cabling / wiring should I use to install a H2S
gas detector?
Controllers
A four conductor shielded cable/wire should be used
for all H2S installations. Listed
below are the cable/wire sizes and distances for
each of our H2S models.
The following charts apply to the Model S4000
Ananlog:
Power
24 VDC
Distance
AWG
Feet
Meters
2000
610
14
1550
410
16
1050
320
18
650
200
20
Analog
Signal
Distance
AWG
Feet
Meters
9000
2740
14
5200
1585
16
3800
1160
18
2400
730
20
The following chart applies to the Model 2180A,
2280A
and 2602A:
Distance
AWG
Feet
Meters
900
275
20
1350
410
18
2250
685
16
3375
1030
14
*Note:
Maximum resistance of 20 OHMS per sensor
lead (40 ohms loop).
The following
applies to the Model TA202A:
Power
24 VDC
Distance
AWG
Feet
Meters
750
228
22
1100
335
20
1600
488
18
2250
685
16
4500
1372
14
Analog
Signal
Distance
AWG
Feet
Meters
1600
488
22
2400
731
20
3800
1158
18
5200
1585
16
9000
2740
14
How often
should I calibrate my H2S gas sensors?
We recommend that all H2S gas detectors
be calibrated at least once every 90 days to ensure
integrity. We are not implying that the sensor will
drift or have problems within this period but frequent
calibration checks merely ensure the integrity and
operation of the life protecting equipment.
This should be used as a guideline only and in some
applications more frequent calibrations may be required.
Each application must be carefully evaluated to
determine the frequency of calibration. What is the
recommended installation procedure for an H2S sensor?
The sensor should be located 12 to 36 inches from
the floor wherever H2S gas may be
present. Why do we
recommend mounting the sensor low?
H2S gas is heaver than air, thus
it will settle. How do you
calibrate an S4000T H2S detector?
You can use ampoules and a breaker bottle or a calibration
kit consisting of a bottle of H2S
gas, a .2 Liter / min regulator, 4 feet of tubing
and a calibration cup Why would
I use a calibration kit over ampoules?
The calibration kit allows for flowing H2S
gas. This eliminates calibration errors from high
humidity or from contaminants which absorb H2S.
Flowing H2S is less likely to be
absorbed by the moisture/contaminants. When is a
splashguard recommended?
All the time for outside installations and even
inside installations where wash downs take place.
