Emerson Daniel 1200 Series, Руководство пользователя

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General settings
(continued)
Table 1-1:
Setting Description
Mounting
The display may be mounted directly to conduit by using slotted flanges for
wall mounting or NPS 1 ½ " to 2 ½ " or DN 40 to 65 mm pipe mounting. Note:
Certain sequences of events can cause unexpected results. To avoid unexpec-
ted issues, use factory defaults and anticipate the possibility of changes in the
mounting strategy.
Overall dimen-
sions (144 mm x 133 mm x 124 mm)
5.67" x 5.24" x 4.88" (W x H x D)
Weight 5.00 lbs (80 oz, 2.27 kg)
1.3 Rate input settings
The settings below are rate input specifications for the Internal Display. Except when
noted, all specifications apply to operation at +25°C (+77°F).
Rate input settings Table 1-2:
Setting Description
Pulse/ transistor/ con-
tact closure input Field selectable; Sourcing or sinking pulse or square wave 0-5 V, 0-12 V,
or 0-24 V; TTL; NPN or PNP transistor
Open collector 100 k
Ω pull-up to 3 V
Switch contact 100 k Ω pull-up to 3 V
PNP transistor 100 k Ω pull-down to ground (COM)
Active input 100 k Ω to battery level, 10 k Ω to power
Maximum Frequency: 64 kHz
Minimum Pulse Width: 5
μ s
Threshold Setting Low (V) High (V)
Normal 1.2 1.8
Low 0.2 1.0
Opto-isolated input Sourcing pulse or square wave 0-5 V, 0-12 V, or 0-24 V
Logic High: 2-24 V, Logic Low: < 1 V
Maximum Frequency: 20 kHz
Minimum Pulse Width: 20
μ s
Input Current: 1 mA @ 5 V, 2.5 mA @ 12 V, 5 mA @ 24 V
Low voltage mag pick-
up input Sensitivity: 20 mVp-p to 24 Vp-p
Maximum Frequency: 6 kHz
Minimum input fre-
quency 0.001 Hz. Minimum frequency is dependent on high gate setting (rate
display).
Input impedance Pulse input: Greater than 75 k Ω @ 1 kHz.
Open collector/switch input: 100 k Ω pull-up to 3 V.
Introduction
6 LTM Internal Display