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Sensor Wiring
Freq
Sensor model
Output
515/8510
X
525
X
2000
X
2100
X
2250
2350
2450
2507
X
2536/8512
X
2537-5
2540
X
2551
X
2552
X
2610-41
2610 + 8058
2724-2726
2734-2736
2750
2751
2756-2757
2764-2767
2774-2777
2819-2823
2839-2842
2850
4150 + 8058
U1000
X
* A minimum of 24 VDC Loop Power is required for the 2750.
Connect sensor wires here as
shown in the following fi gures.
Digital (S
L)
Run on
3
Output
Loop Power
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X*
X
X
X
X
X
X
X
X
Connect power and open
collector wires here as
shown on pages 17 and 18.
9900 Generation
I
II
III
IV
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Loop powered systems
cannot power both an
H COMM Module and
pH sensor.
If using both an H COMM
Module and pH sensor,
DC power is required.
Loop Power can be
used ONLY for the
following sensors:
515/8510, 525,
2250, 2350, 2450,
2536/8512, 2540, 8058
and pH/ORP sensors
with 2750; all other
measurement sensors
require DC power.
Advanced 2751
features require
Gen 4 or greater
9900 Transmitter
11
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