Starting And Operating The Controller; Modes Of Operation - Sentry SBC Installation, Operation & Maintenance Manual

Starting and Operating the Controller

After the sampler and controller are installed, timer setpoints must be verified or changed from the factory preset
values .
1. Press the Setpoint menu button to access the Setpoints menu screen .
2. The Setpoints menu screen lists all the setpoints available for adjustment .
3. Refer to the appropriate appendix for information on the setpoints for your sampler model .
Timers
 NOTE
Timers used depend on sampler type . See appendix appropriate to your sampler .
1. Extend or Sample time: Determines the time the sampler is in the process stream (max 600 sec) .
2. Retract time: (not applicable to all samplers) Determines the duration the sample probe is retracted, allowing the
sample to be deposited into the sample container (max 600 sec) .
3. Cycle Time: Determines the time between samples (max 17:59:59) .
4. Delay Time: (not applicable to all samplers) Determines the time before purge/air eject occurs (max 600 sec) .
5. Purge Time: (not applicable to all samplers) Determines the time purge/air eject is active (max 600 sec) .
6. Park Time: (not applicable to all samplers) Determines the time the sampler is in the Park position (max 17:59:59) .

Modes of Operation

The controller operates in two modes, AUTO and REMOTE, with the capability to take a GRAB sample in either mode .
AUTO and REMOTE cannot be selected at the same time .
Auto Mode
ƒ Auto mode is the default mode of operation .
ƒ Press the AUTO key to place the controller in Auto mode .
ƒ All operating commands are initiated at the controller panel .
ƒ Refer to the appropriate appendix or the Service Menu of the controller for the sequence of operation specific to
your sampler model .
Remote Mode
ƒ Press the REMOTE key to place the controller in Remote mode .
ƒ Start and stop commands are initiated from a remote control system .
ƒ Sampling is started and stopped based on an external contact (Terminals TB2 3, 4) .
– When the contact is closed, sampling starts .
– When the contact is removed, sampling stops .
– If contact is removed in the middle of a sampling cycle, the sampler completes the cycle and then stops .
– A momentary closure of the remote contact results in a single sample being taken .
10 Original Instructions Sentry Equipment Corp