2 Installation | Model 6600 | |
|
|
|
|
|
|
|
|
|
Threshold Alarm 2: | • Can be configured as high (actuates when concen- |
| tration is above threshold), or low (actuates when |
| concentration is below threshold). |
| • Can be configured as |
| • Can be configured as latching or nonlatching. |
| • Can be configured out (defeated). |
System Alarm: | Actuates when DC power supplied to circuits is |
| unacceptable in one or more parameters. Permanently |
| configured as |
| feated. Actuates if self test fails. |
| To reset a System Alarm during installation, discon- |
| nect power to the instrument and then reconnect it |
| Further detail can be found in chapter 3, section |
Digital Remote Cal Inputs
Remote Zero and Span Inputs: The REMOTE SPAN and RE- MOTE ZERO inputs are on the DIGITAL INPUT terminal block. They accept 0 V (OFF) or 24 V dc (ON) for remote control of calibration (See Remote Calibration Protocol below.)
Zero: | Floating input. 5 to 24 V input across the + and – terminals |
| puts the analyzer into the ZERO mode. Either side may be |
| grounded at the source of the signal. 0 to 1 volt across the |
| terminals allows ZERO mode to terminate when done. A |
| synchronous signal must open and close the external zero |
| valve appropriately. See Remote Probe Connector at end of |
| section 3.3. (With the |
| cally operate synchronously). |
Span: | Floating input. 5 to 24 V input across the + and – terminals |
| puts the analyzer into the SPAN mode. Either side may be |
| grounded at the source of the signal. 0 to 1 volt across the |
| terminals allows SPAN mode to terminate when done. A |
| synchronous signal must open and close the external span |
| valve appropriately. See Remote Probe Connector at end of |
| section 3.3. (With the |
| cally operate synchronously.) |
Cal Contact: This relay contact is closed while analyzer is spanning and/or zeroing. (See Remote Calibration Protocol below.)
| Teledyne Analytical Instruments |