SP 300-BLUE Lascar Electronics, SP 300-BLUE Datasheet - Page 4

• Manufacturer Part Number: SP 300-BLUE
• Description: Voltmeter, 3.5 digit blue LED display, 200mV, 8 pin SIL, IP65
• Manufacturer: Lascar Electronics
• Type: Voltmeterr

Specifications of SP 300-BLUE

• Accuracy: 0.1 %
• Brand/series: SP 300- Blue
• Display Digit Height: 0.36 Inch
• Display Type: LED (Blue)
• Mounting Type: Socket or Panel
• Number Of Digits: 3 1/2
• Primary Type: Electronic
• Signal, Input: Voltage
• Special Features: Splashproof
• Termination: 8 Pin
• Voltage, Supply: 4.75 to 5.25 VDC
• Lead Free Status / Rohs Status: RoHS Compliant part

Specifications liable to change without prior warning
SCALING
Two resistors Ra and Rb
may be used to alter the
full scale reading (FSR) of
the meter - see table. The
meter will have to be re-
calibrated by adjusting the
calibration potentiometer
on the rear of the module.
APPLICATIONS
Do not connect more than one meter to the same power supply if the meters cannot use the same signal
ground. Taking any input beyond thepower supply railswilldamage the meter.
Measuring an input voltage referenced
to a floating supply, i.e. the input
voltage and the meter's power supply
are isolated from each other.
V
S selects betweenvoltage andcurrent measurement.
RaandRb shown scaled for200V
DisplayDP1,DP2orDP3, by connecting to 0V, a s required.
supply
1
±200mV
+
-
4
5
3
220nF
IH
IL
COM
Measuring supply voltage and current to a load.
V+
0V
7805
1
2
0V
V+
+5V
10uF
470nF
FSR
3
COM
* Ensure that Ra is rated for high voltage use.
** Ensure solder link LA is cut.
R s = 200mV
Voltage
Current
V+
0V
1
2
IH
IL
Measuring a single ended input
voltage referenced to supply, i.e. the
input voltage and the meter's power
supply share the same 0V rail.
4
5
I
S
FSR
1
V
A
2000V* 1M**
±200mV
200mA
(e.g. 0.1 /400mWfor2Afullscale)
200 A
20mA
200V
2mA
20V
FSR
Ra=1M
Rb=1k
SP 300-BLUE
2V
+
-
Shunt
Rs
910k**
1M**
1M**
4
5
Load
Ra
0R
0R
0R
0R
IL
IH
I
V+
0V
1
2
R
L
100R
100R
Issue 6
100k
0V
10R
V+
10k
Rb
1k
1k
1R
April/2008
3½ Digit LED Voltmeter Module
current loop
Vin or in
4-20mA
R = 0.2
Measuring current.
The meter's supply is isolated
from the current being measured.
+
-
I
I
R
FSR
Measuring a 4-20mA loop current.
The meter's power supply must be
isolated from the 4-20mA current
loop.
I
I-
+
LA
Ra
R= R eading at 20mA
220k
R
4
5
3
5k
S.C.
Rb
IH
IL
COM
No: 695 - Page 4 of 4
V+
0V
Set Zero
1
2
5
3
4
160
4
5
IL
COM
IH
IH
IL
Applies to SP 300/1
0V
SP 300-BLUE
V+
V+
0V
1
2
0V
V+