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900D4D Manual
CHAPTER 7 - SPECIFICATIONS
Resolution:
1/4 inch (6 mm)
Accuracy:
+/- 1/8 inch (3 mm)
Display temp. range:
-40 to +140°F (-40 to + 60°C)
Product temp. range:
-40 to +194°F (-40 to + 90°C)
Display temp. drift:
0
Alarm temp. drift:
0
Sender materials:
Sender bar is polyethylene or optional 316 SS.
Sender temp. sensors:
Number of senders is the sender bar length divided by the
sender spacing of 16”.
Sender battery:
3.6 volt lithium battery module, 5 year expected lifetime.
Battery module can be replaced by field personnel.
Float:
Cylindrical, approximately 7.25 inches diameter by 4.5
inches high. Float material is polyethylene.
Display enclosure:
NEMA 4 rated fiberglass molded enclosure, 6 inches wide
by 8 inches high by 4 inches deep.
Display type:
Four LCD displays, 0.50 inch character height, backlit for
night viewing. Volume displays can show up to 9999,
and is programmed from tank volume chart. Level (inch)
display can show up to 959.7 inches of level. Temperature
display can show from –40°C to 100°C in 1° increments, or
from –40°F to 212°F. Displayed temperature is an average
of all immersed sensors. Alarm display shows active
alarms. Battery display shows display and sender battery
conditions.
Display batteries:
Four alkaline “AA” batteries power all display functions,
expected lifetime is 3 to 4 years. Batteries can be replaced
by field personnel.
Display keypad:
16 button pad for calibration entry, alarm setting, remote
communications programming, security code entry, gauge
on/off control, and backlight activation.
Remote communications:
Four 4-20 mA outputs, three programmable for volume,
the other for temperature (fixed calibration). These
outputs must be externally powered with at least 8 volts
available for the outputs.
Alarms:
4 alarms, each consisting of a transistor conducting to
ground with a rating of 1mA @ 24VDC. Alarms 1 and 2
operate from the total (top float) fluid level, and alarms
3 and 4 operate from the below interface (bottom float)
fluid level. An external alarm manager is recommended to
operate alarm devices.
Summary of Contents for SeeLevel II 900-D4D DUAL
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