Datel Murata DMS-20PC-4/20 Series Handbuch

Blättern Sie online oder laden Sie pdf Handbuch für Monitor Datel Murata DMS-20PC-4/20 Series herunter. Datel Murata DMS-20PC-4/20 Series 6 Seiten. Subminiature 4-20ma loop-powered 3-1/2 digit led process monitors

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Datel Murata DMS-20PC-4/20 Series Handbuch
www.murata-ps.com
FEATURES
■
Industry's fi rst loop-powered meter with a large,
easy-to-read, LED display!
■
Self-powered, no external supply required
■
Unipolar, Bipolar and Positive Reading Models
■
Large, 0.37"/9.4mm digits
■
Excellent display intensity
■
High-quality, 20-turn, span (gain) and zero (offset)
adjustments
■
DIP-switch selectable range and decimal points
■
Hundreds of input/readout combinations
■
Vibration-resistant package; Reliable screw-terminal
input connections
SIMPLIFIED SCHEMATIC DIAGRAM
　
For full details go to
www.murata-ps.com/rohs
The DMS-20PC-4/20 Series are the world's fi rst loop-powered digital panel meters
with a large, easy-to-read, bright red, LED display. All operating power is derived
directly from the loop current itself—no external power supply is required! The large,
0.37"/9.4mm digits exhibit uniform intensity over the entire 4-20mA operating range.
Additionally, the total maximum loop voltage drop is only 5V! Users no longer have to settle
for diffi cult-to-read LCD displays in loop-powered applications.
Both gain (span) and offset (zero) adjustments are performed with on-board, precision,
20-turn potentiometers. All decimal-point and range-change selections are made on a six-
position DIP switch featuring vibration-resistant, gold-plated contacts. Unlike competitive
meters, there are no jumpers or solder gaps to open or close. Connections to the current
loop are made via a reliable, two-position, screw-type
terminal block.
The DMS-20PC-4/20's DIP switch and adjustment potentiometers accommodate
hundreds of different input-current/output-reading combinations. This versatility practically
eliminates the need to order more costly, long-lead-time, factory-customized "specials" in
applications in which several different-range meters are required. An optional bezel assem-
bly, featuring screw fasteners and a rubber seal, simplifi es panel mounting and provides
excellent resistance to environmental dust and moisture. All these outstanding features
combine to make the DMS-20PC-4/20 Series the perfect meters for prototype and OEM
4-20mA current-loop instrumentation.
R3
R7
GAIN
ZERO
ADJUST
ADJUST
BAND-GAP
REFERENCE
CIRCUIT
+5V
–5V
DC/DC
CONVERTER
www.murata-ps.com/dpm
DMS-20PC-4/20 Series
Subminiature 4-20mA Loop-Powered
3½ DIGIT A/D
DATA
CONVERTER
1
2
3
ON
DIP SWITCHES
1
2
3
4
5
6
CURRENT TO
VOLTAGE
CONVERTER
29 Mar 2011 MPM_DMS20PC-4/20.C05 Page 1 of 6
3½ Digit LED Process Monitors
DP1
DP2
DP3
TB1
+
–
+
–
LOOP INPUT