Sierra Monitor Corporation 1200-26, 1250-00, 1260 User Manual

SENTRY

ACCESSORIES

The Sentry Gas Risk Management System has
a variety of calibration and sensor options to
insure accurate and reliable monitoring of
hazardous gases.

A variety of accessories insure that Sentry systems are pro­viding accurate and reliable monitoring of hazardous gas
conditions. These options aid in providing a system designed
to meet the specific needs of the user.

CALIBRATORS

1250-00 Calibration Gas Delivery System (High Capacity)

The 1250-00 Calibrator Kit is used to deliver calibration gas
for combustible gases and a wide variety of toxic gases in­cluding Hydrogen Sulfide, Chlorine, Sulfur Dioxide, Nitric Ox­ide, Nitrogen Dioxide and others. The 1250 Calibrator Kit
consists of a regulator, calibration adapter, carrying case and
tubing. The calibration gas cylinders (Series 1260) are sold
separately. The 1260 series gas cylinders are large capac­ity enabling the user to perform many calibrations with a
single cylinder.

GAS MONITORING SYSTEM

ACCESSORIES

1200-26

1200-26 Calibration Gas Delivery System (Low Capacity)

The Model 1200-26 Calibration Gas Delivery System pro­vides calibration gas for Combustible Gas, Carbon Monox­ide, or Hydrogen. This system consists of a disposable pres­sure vessel (2 cylinders supplied with each system) con­taining calibration gas and a non-disposable pressure and
flow regulation system. Gas flow is controlled in two steps
with a regulator and flow meter to conserve gas and to avoid
cooling the sensor below its operating temperature.

The 1200-26 and the Methane calibration gas cylinders are
approved for calibration of Factory Mutual Research Corpo­ration (FMRC) approved 5100-02 Sierra Monitor Combus­tible Gas Sensors.

9210-00 Permeation Type Calibrator (Toxic)

The 9210-00 Permeation Type Calibrator with the individual
permeation tube for the specific gas required offers a unique
means of generating a desired gas in small quantities. This
device has the advantages of a wide selection of gas types,
long life, and is an economical solution for the regular cali-

1250-01

1991 Tarob Court, Milpitas, CA USA 95035 Phone: [phone] Fax: [phone]
[phone] Email: [e-mail] www.sierramonitor.com

bration of a large number of toxic sensors.

ACCESSORIES

SAMPLE DRAW PRODUCTS

Sample draw products are used in applications in which
the sensor cannot be installed directly at the gas sensing
location due to poor accessibility or the harshness of the
environment. Sample is continuously drawn from the sens­ing location to the sensor at a more suitable location.

The primary component of the sample draw product is a
venturi manifold that uses a continuous flow of driver air to
pull a slight vacuum through the sample supply line draw­ing the sample into the manifold cavity connected to the
sensor.

5399-01 Sample Draw Fitting

The sample manifold assembly is the 5399-01 Sample
Draw Fitting. Sample stream draw and flow control is pro­vided by the user.

5398-01 Sample Draw Assembly

The 5398-01 is a complete sample draw assembly includ­ing the sample draw fitting, driver air, sample and exhaust
fittings and flow metering assembly. This allows accurate
adjustment of sample flow using the signal flow meter lo­cated on the flow metering assembly.

ACCESSORIES

SENSOR MOUNTING PRODUCTS

5311-00 Rainshield

The Rainshield is mounted over the sensor head to pro­tect the sensor from direct exposure to rain, hosedown
and other splashing liquids.

5394-00 Duct Mount Fitting

The Duct Mount Fitting facilitates installation of the gas
sensor module onto an air duct. The fitting also includes
the 5360-00 calibration gas delivery fitting so that calibra­tion gas can be delivered to the sensor with out removing
the module from the duct.

5360-00

5394-00

ACCESSORIES

5398-01

5398-02 Sample Draw/Dilution Assembly

The 5398-02 is used in applications in which the expected
gas concentration is either higher than the maximum range
of the sensor or sufficiently high to significantly reduce sen­sor life with extended exposure. This assembly adds a
second flow meter for control of dilution air. Adjustment of
sample and dilution air flow meters determines the dilu­tion ratio. Concentrations displayed on the Sentry Con­troller must then be multiplied by the dilution factor to ar­rive at actual concentrations.

CALIBRATION ADAPTERS

The Sentry system is designed for easy calibration of the
sensor modules. The standard calibration adapter screws
over the head of the sensor. Then calibration gas is fed
through a tube connected onto the adapter.

Magnetic calibration adapters are commonly used with
Sentry gas sensor modules. The magnetic calibration
adapter is used to control a switch inside the sensor mod­ule. When the adapter is first applied to the sensor the
switch closes to indicate the start of calibration and the
zero gas stage. The second time the adapter is applied to
the module, the switch closure indicates that span gas is
being applied. When the magnetic adapter is removed,
the module knows that calibration is complete and sends
the appropriate signal to the controller.

© 2002 Sierra Monitor Corporation

1991 Tarob Court, Milpitas, CA USA 95035 Phone: [phone] Fax: [phone]
[phone] Email: [e-mail] www.sierramonitor.com