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Technical Guide
DAN-LIQ-Turbine Meter-TG-0807
August 2007
Page 19
DUAL CHANNEL PREAMP
TERMINAL IDENTIFICATION
CUSTOMER CONNECTIONS
BLACK OR
RED
PICKOFFPICKOFF
WHITE
WHITE
CHANNEL B CHANNELA
BLACK OR
RED
T
U
P
T
UO
B
.
AH
C
TUP
T
UO
A.
AH
C
C
DV
03
OT
01+
NO
MMO
C
NO
MMO
C
TB1 1 2 3 4 5
2
1
21
TB2 TB3
J3 J4
J2
JUMPER POSITIONS
JUMPER A B OUT
J1-CHAN. A INPUT N/A 40mV. PP MIN N/A
J1-CHAN. B INPUT N/A 40mV. PP MIN N/A
J3-CHAN. A OUTPUT 5V.PULSE SUP. VOLT. PULSE (10-30 VDC) O.C.
J4-CHAN. B OUTPUT 5V.PULSE SUP. VOLT. PULSE (10-30 VDC) O.C.
J1
PREAMP JUMPER CONFIGURATIONS
TURBINE METER INSTRUMENTATION
The turbine pickoff coil has a high impedance and
offers only a low voltage output. Transmission of ow
signals requires low impedance and high voltage, and
so amplication of the pickoff signal is required.
Daniel Series 1200 and 1500 Liquid Turbine Flow
Meters are supplied with the UMB and a dual channel
preamplier as standard. The preamplier shapes and
conditions the pickoff output signal, rendering it suitable
for transmission over distances of up to 3,000 feet, with
the appropriate cabling.
The UMB allows for either one or two pickoffs. The
outputs from the two pickoffs are 90
o
electrically out
of phase, thus facilitating proper dual pulse delity
checking.
Pickoff Specifications
Type: 2-wire reluctance
Resistance: 600-900 Ohms
Inductance: 250 mH max.
Output: Sinusoidal 40mV p-p minimum @minimum
flow with preamplifier load
Optional: 2, 3* or 4* pickoff coils
*with dual UMB
Preamplifier Performance -
Dual Channel Preamplifier
Inputs:
Supply voltage: 10 - 30 Vdc
Minimum input signal amplitude:
40mV p-p minimum
Powered Pulse Output
Output: 0 to 5V square wave
Frequency range: 0 to 5 kHz
Loading: 1 kOhm internal pull-up
Variable Voltage Output
Output: 0 to supply voltage square wave
Frequency range: 0 to 5 kHz
Loading: 1 kOhm internal pull-up
Open Collector Output
Output: Square wave
Frequency range: 0 to 5 kHz
Maximum voltage: 30 Vdc
Maximum current: 125 mA
Maximum power: 0.5 Watts
Transmission Distance
Without preamp: 20ft (6.1m)
Belden 88442 or equivalent
With preamp: 3,000ft (914m)
Belden 8770 or equivalent
Hazardous Area Classifications
UL / CUL Class 1, Division 1, groups C&D
Nema 4 UL, CUL
CE certified EEx d IIB T6 (ATEX)
DUAL CHANNEL PREAMP
TERMINAL IDENTIFICATION
CUSTOMER CONNECTIONS
BLACK OR
RED
PICKOFFPICKOFF
WHITE
WHITE
CHANNEL B CHANNELA
BLACK OR
RED
T
U
P
T
UO
B
.
AH
C
TUP
T
UO
A.
AH
C
C
DV
03
OT
01+
NO
MMO
C
NO
MMO
C
TB1 1 2 3 4 5
2
1
21
TB2 TB3
J3 J4
J2
JUMPER POSITIONS
JUMPER A B OUT
J1-CHAN. A INPUT N/A 40mV. PP MIN N/A
J1-CHAN. B INPUT N/A 40mV. PP MIN N/A
J3-CHAN. A OUTPUT 5V.PULSE SUP. VOLT. PULSE (10-30 VDC) O.C.
J4-CHAN. B OUTPUT 5V.PULSE SUP. VOLT. PULSE (10-30 VDC) O.C.
J1
PREAMP JUMPER CONFIGURATIONS
Figure 15 - Dual Channel Preamp Terminal Identication Customer Connections