DMS-30PC-1-RL-C Murata Power Solutions Inc, DMS-30PC-1-RL-C Datasheet - Page 4

• Manufacturer Part Number: DMS-30PC-1-RL-C
• Description: DPM LED MINI 2VDC 3.5DIG LP RED
• Manufacturer: Murata Power Solutions Inc
• Type: Voltmeterr
• Series: DMS-30PCr

Specifications of DMS-30PC-1-RL-C

• Display Type: LED
• Measuring Range: ±2V
• Display Style: Red Characters, Black Background
• Display Face Size: 2.09" L x 0.84" W (53.1 x 21.3mm)
• Display Digits: 3.5
• Display Digits - Height: 0.560" (14.22mm)
• Backlight: Without
• Mounting Type: Panel Mount
• Termination: PC Pins
• Voltage - Supply: 4.75 ~ 5.25V
• Equipment Type: 3 1/2 Digit, LED Display Low-Power
• Input: +/- 2 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 811-1023

3. Engineering Scaling: For measuring voltages greater than the full
4. Floating Signal Source Measurements: Floating signals can be
2. Differential Input Confi gurations: Differential measurements can
APPLICATIONS
scale input range of a given meter, the input signal must be attenu-
ated. A simple voltage divider (similar to that shown in Figure 4) will
scale the input to within the range of the selected meter. R1 and R2
should be precision, ±1%, metal-fi lm resistors with absolute TCR's
less than 50ppm/°C. See Ap Note 4 for more information on engineer-
ing scaling.
measured using the circuits shown in Figures 5 and 6. Connecting
be made with all DMS-30PC meters. Figure 3, though not a practical
real-world application, uses a voltage divider to demonstrate the
concept of a differential input signal. Be careful not to exceed the ±2V
common mode voltage limitation for 5V-powered meters.
85-264Vac
+
–
85-264Vac
V
REF OUT
IN
REF IN
R1
R2
DP1
AC to DC Converter
AC to DC Converter
8
7
6
50kΩ < R1 + R2 < 10MΩ
(–) IN LO
Figure 3. Differential Input Confi guration
(+) IN HI
R1 + R2
Figure 4. Input Attenuation Circuit
R2
11
12
+5V SUP
+5V SUP
x V
DMS-30PC-1
IN
= Reading
1
1
DMS-30PC-1
www.murata-ps.com/dpm
3
5V RET
5V RET
3
11
(+) IN HI
12
(–) IN LO
8
REF OUT
7
REF IN
R1
R2
R3
1k
1k
1k
85-264Vac
CELL
1.5V
CELL
1.5V
85-264Vac
5. Process Control (4-to-20mA) Measurements: In many common
Where:
pin 10 (ANALOG COMMON) or pin 3 (5V RETURN) to (–) INPUT LO (pin
12) provides the reference point for the meter's input.
A "fl oating" input is a signal that has no galvanic connection to the
meter's power supply. In the fi gures below, the 1.5V battery illustrates
a true fl oating input.
process-control applications, a 4-to-20mA current loop is used to
transmit information. Because DMS-30PC meters have such high
input impedance, a simple shunt resistor across the meter's input can
be used to convert the loop current to a voltage. See Figure 7. The
value of the shunt resistor is a function of the scaling requirements of
the particular application and can be calculated using the following
equation:
AC to DC Converter
–
–
AC to DC Converter
R
ANA COMM
Shunt
V
I
(–) IN LO
Fsr
Fsr
Technical enquiries email: [e-mail], tel:
(+) IN HI
(–) IN LO
(+) IN HI
Figure 6. Floating Input Measurements
Figure 5. Floating Input Measurements
= R1 = V
= Full scale reading (in Volts)
= Relative full scale current (in Amps)
11
10
12
+5V SUP
11
12
3½ Digit, LED Display Low-Power,
Miniature Digital Panel Voltmeters
+5V SUP
(Alternate Confi guration)
1
Fsr
DMS-30PC Series
1
/ I
Fsr
5V RET
5V RET
DMS-30PC-1
DMS-30PC-1
3
3
MPM_DMS_30PC.F05 Page 4 of 6
DP1
6
DP1
6
[phone]
8
7
REF OUT
REF IN
8
REF OUT
7
REF IN