Fluke 2180A - Manual (Page 75)

21X0A-006
Option -006
Limits
606-1. INTRODUCTION
606-2. The 21X0-006 Limits Option gives the 2180A
and 2190A Digital Thermometers the capability of
providing both visual and electrical indications (alarms)
when the temperature measurement exceeds either of a
pair of selectable maximum/minimum limit values. Also
selectable are, all for a single point, the delta function
(displays the difference between the preset value and the
temperature read), and the maximum/minimum display
function (the highest or lowest temperature read since the
last reset by the INITIALIZE MAX/MIN switch).
606-3. The Limits Option is available as factory
installed with initial order or may be ordered as a field
installable kit for addition to the instrument.
606-4. SPECIFICATIONS
606-5. Specifications for the Limits Option, 21X0-006,
are as listed in Table 606-1.
Table 606-1. Specifications
Limits Function: lights LED and activates Form A (SPST)
relay when a preset limit is exceeded. Contacts rated at
10 VA, 184V dc or 130V ac rms max, 0.5A max, resistive.
Min/Max Function: Store min or max readings, resettable
from front panel.
ATemperature Function: Reads ± temperature deviations
from preset nominal temperature.
Installable: Factory or field, through pre-punched front
panel.
Function: Limit:
^ Low Limit —9999°
>High Limit +9999
Store min reading Not used
Store max reading Not used
Deviation from Nominal
WARNING
H A Z A R D O U S V O L T A G E S M A Y B E
P R E S E N T W I T H I N T H E I N S T R U M E N T .
ONLY QUALIFIED PERSONNEL SHOULD
P E R F O R M T H I S I N S T A L L A T I O N P R O ­
CEDURE.
1. Disconnect the thermometer from all power
sources.
2. Remove the screws on the bottom of the case
that fasten the top and bottom of the PTI case
together and remove the top half of the case.
3. Remove the hole plugs from the Limits section
of the front panel and attach the standoffs supplied
with the option to the front panel.
4. Position the Limits PCB so that the
thumbwheel LED and pushbutton switch line up
with the applicable front panel ports.
5. Attach the Limits PCB to the Main PCB using
the screws supplied with the option.
6. Connect the cable on the Limits PCB to J4 on
the Main PCB.
7. Replace the PTI cover on the instrument and
reconnect to input power sources, if required, at this
time.
606-8. OPERATING NOTES
606-6. INSTALLATION
606-7. Options for field installation can be installed
using the following procedure:
606-9. Installation of the Limits Option enables the low
current single contact relay (Kl) on the thermometer
Main PCB. The contact points are available on a rear
panel connector block.
606-1