Appendix a specifications – Xylem H-3311 User Manual
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SDI-12 Command & Response Protocol
General
Input:
Shaft
Position
Outputs:
SDI-12 & 2-Wire
Quadrature
Resolution (SDI):
200 counts/rev
Resolution (Quadrature):
100 counts/rev
Max rate:
15 rev/sec
Quadrature Output
Type:
Open
Drain
(optional
factory
installed
pull up resistor to 5.0 V)
Transient Protection:
5.0V Transguard
sDI-12 Output
Baud
Rate:
1200
Protocol:
SDI-12, 7-bit even parity,
1
stop
bit
Version: 1.3
Output Voltage Levels:
minimum high level:
3.5 volts
maximum low level:
0.8 volts
maximum cable length:
250 ft.
Power requirements
Voltage Input:
9.6 to 16 Volts DC
Current:
Less than 2.0mA
environmental
Operating Temperature:
-40 to 60 °C
Storage Temperature:
-50 to 70 °C
Humidity:
0 to 100%
mechanical
Bearing:
Double bearing with
external seal and 1.12 in.
separation
Starting Torque:
0.15 oz in typical
0.50 oz in max over
temperature
Shaft:
5/16 in. compatible with
Stevens, Fisher and Porter
pulleys
and
accessories
Shaft Length:
2.00 in.
Shaft Clearance:
1.75 in.
Shaft Tread:
24 threads per in.
Thread Length:
0.75 in.
Material:
Anodized Aluminum
Size:
7 in. wide (base plate)
4-1/4
in.
high
4 in. deep (not including
shaft
or
connectors)
Connector
Bulkhead:
Amphenol MS3102R16S-1P
(7-pin
male)
Cable:
Amphenol
MS3106A16S-1S
(7-pin
female)
(One cable provided with the H-3301/3311)
warranty
The WaterLOG® H-3301/H-3311 is warranted
against defects in materials and workmanship for
two years from the date of shipment.
appendix a
specifications