Table of Contents
Advertisement
General Description
The Sentry® ISOLOK® SAL-DBB sampler is specifically designed to meet the demands of the harsh conditions found in
the oil sands field . Its unique design provides for improved reliability, serviceability, and operator safety .
The sampler is comprised of five (5) modules:
ƒ line adapter
ƒ valve assembly
ƒ sampler assembly
ƒ controller
ƒ sample container with adapter
Line Adapter
The line adapter is designed specifically for use with the ISOLOK SAL-DBB sampler and, as
such, is critical to the sampler's operation . It bolts to existing or newly installed Sentry SAL-B
line adapters .
Valve Assembly
The double block and bleed (DBB) valve assembly is a trunnion ball design utilizing a fully
encapsulated ball to eliminate dead space . The bottom port functions as both the sample
collection point and as the bleed port when isolating the sampler . A 1/4˝ NPT port, located
on the side of the valve body, permits purging/flushing of the ball cavity and discharge port .
The live loaded valve seals can be adjusted without removing the valve from service . The
valve assembly includes a 1-inch bleed valve on the bottom discharge port and a lockable
locating pin on the block valve handle .
Sampler Assembly
The sampler is a pneumatically operated plunger with an annulus which extends into the
process stream, then retracts to deposit the sample collected in the annulus, through the
bottom port of the DBB valve assembly, into a sample container . The plunger is activated by
two cylinders, which place the plunger in three positions, extended (collecting sample in the
process stream), retracted (depositing sample into the sample container), and park (plunger
at rest ready to collect next sample) . A fourth position is achievable by manually retracting
the lock pins, allowing the plunger to be totally retracted from the DBB valve assembly, thus
permitting the valve to be closed and the sampler removed .
The temperature rating of the ISOLOK SAL-DBB sampler is defined by the plunger seals . The plunger seals are selected
based on material compatibility and temperature of the process being sampled .
Controller
ISOLOK samplers require an operating control, which determines the time interval between cycles and plunger dwell
time in the product stream . Filtered, compressed air or gas is provided from the control to the sampler air cylinders
for operation . The controller provided is designed specifically for use with the ISOLOK SAL-DBB sampler and as such, is
critical in the sampler's proper operation .
See separate manual for controller installation and operation .
6
Sentry Equipment Corp
Advertisement
Table of Contents
