4200 Series Transmitters
Instruction Manual
Form 5596
November 2006
18
NOTES:
CONNECT DVM TO TEST POINTS AS DIRECTED BY CALIBRATION AND
MAINTENANCE PROCEDURES.
INSURE THAT THE CONNECTOR ATTACHED TO J1 (VIEW A) IS NOT
REVERSED WHEN INSTALLING IT ON THE PRINTED WIRING BOARD.
THE INDICATING DEVICE CAN BE A VOLTMETER ACROSS A 250 OHM
RESISTOR OR A CURRENT METER.
SEPARATE RETURN LEAD REQUIRED FOR RELAYS. RETURN WIRE
MUST BE CONNECTED EVEN IF RELAY OUTPUTS ARE NOT USED.
4
3
1
2
B1948-5 / IL
J3
J1 FROM
RFI FILTERS
TO RFI
FILTERS
J1
(SEE VIEW A)
VIEW A
+ 24 VOLT
DC POWER
SUPPLY
TRANSMITTER COMPARTMENT
FIELD WIRING
COMPARTMENT
Figure 8. Calibration and Bench Check Test Setup
Test Connections to the Field Wiring
Compartment
During calibration set up the transmitter as shown in
figure 8. Except for Type 4211 and 4221
transmitters, the field circuit printed wiring board is
used. A Type 4211 or 4221 transmitter uses a
barrier strip (key 11, figure 4) mounted in the field
wiring compartment for field wiring connections. For
calibration and bench check of the 4211 or 4221
transmitter, make connections to the barrier strip
(key 11).
For a Type 4210, 4215, or 4220 transmitter with
position switches, the transmitter can be calibrated
with or without the position switch outputs being
connected.
Note
On units with position switches, the
(R) terminal on TB3 must be connected
to the power supply negative (
−
)
terminal for proper instrument
operation, even if the position switch
outputs are not used.
For a Type 4211 or 4221 transmitter without position
switches, use a two wire system with the indicating
device installed as shown in figure 8.
Transmitter Circuit Zero and Span
Adjustment
WARNING
On an intrinsically safe instrument, the
current monitoring across TP1 and
TP2 during operation must be with an
approved meter. Personal injury or
property damage may result from fire
or explosion if an approved meter is
not used in a hazardous area.
Calibration of the transmitter consists of adjusting
the zero and span for a 1 to 5 volt dc output across a
250 ohm resistor, or a 4 to 20 milliampere output
current for a specific travel. If necessary refer to the
type number on the nameplate to determine the
configuration of the transmitter.
1. Remove power from the instrument.
