Teledyne Analytical Instruments LXT-380, Инструкция по эксплуатации

Страница: 47 / 104

Operation LXT-380 Universal Transmitter
Teledyne Analytical Instruments
28
PV connection (pH, ORP, Ion), Reference connection and Diagnostic
connection.
On a dual channel instrument an asterisk
*
will be displayed in the
sensor name block, SENSOR 2 *. The SENTINEL function will only be
visible in the Single Screen mode, not in the Dual Screen mode. Toggle
the BACK Key from Dual → Sensor 1 → Sensor 2 to see the SENTINEL
function.
Configure SENTINEL Function
The SENTINEL function is located in the Configure
Sensor menu:
CONFIG → SENSOR → SENSOR 1 or 2 →MORE
→ SNTL
There are three values displayed:
V
o
= SENTINEL Voltage offset, The diagnostic
voltage of a new electrode
V
e
= SENTINEL expiration Voltage, V
o
+ Range
RANGE = The shift in the diagnostic voltage required
to trigger diagnostic fault.
The default values of V
o
= 0.0 mV and the Range = 60
mV are good for most situations. The starting diagnostic
voltage is typically near 0 mV on a new electrode and if the
readings have drifted 60 mV apart (a full pH unit) then
electrode service is required.
3.3 START UP GUIDE
Install and wire the LXT-380 Transmitter as described in Sections
2.1 and 2.2 above.
Connect the sensor to the transmitter as described in Section 2.2
above.
Supply power to the Model LXT-380 transmitter.
Verify the proper measurement type is displayed, pH, ORP or Ion.
The sensor automatically uploads the measured parameter, the