Javelin D
Ɣ
Model PD644 Voltmeter
Instruction Manual
10
Isolated 4-20 mA Transmitter Output
OUTPUT RANGE
1.00 to 23.00 mA typical
CALIBRATION
Factory calibrated for 4-20 mA
SCALING RANGE
0.00 to 23.99 mA for any display range,
see output range above
ACCURACY
± 0.1% F.S. ± 0.004 mA
TEMPERATURE
DRIFT
50 PPM/
q
C from 0 to 65
q
C ambient
Note: Analog output drift is separate from input drift.
ISOLATED
TRANSMITTER
POWER SUPPLY
24 VDC
r
10% @ 20 mA
EXTERNAL LOOP
POWER SUPPLY
35 VDC maximum
Power supply
Minimum
Maximum
24 VDC
10
:
700
:
OUTPUT LOOP
RESISTANCE
35 VDC (external)
100
:
1200
:
Serial Communications
METER
ADDRESS
PDC protocol: 0 - 99
Modbus
®
protocol: 1 - 247
BAUD RATE
300 – 19,200 bps
TRANSMIT
TIME DELAY
Programmable between 0 and 199 ms
DATA
8 bit (1 start bit, 1 stop bit)
PARITY
None, even, or odd
(Modbus
®
only; PDC protocol does not use parity)
BYTE-TO-BYTE
TIMEOUT
0.01 – 2.54 sec (Modbus
®
only)
TURN AROUND
DELAY
Less than 2 ms (fixed)
Request or download copies of the Precision Digital Serial Communication Pro-
tocol and Modbus
®
Register Tables specifications for details about serial data
communications with Precision Digital products.
www.
GlobalTestSupply
.com
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