DPM 970 LASCAR, DPM 970 Datasheet - Page 2

• Manufacturer Part Number: DPM 970
• Description: Voltage Meter
• Manufacturer: LASCAR

Specifications of DPM 970

• No. Of Digits / Alpha: 3-1/2
• Meter Function: AC Voltmeter
• Meter Range: 0V To 500V
• Digit Height: 19mm
• Operating Temperature Range: 0°C To +50°C
• Meter Signal Input: Voltage
• Character Size: 0.75"
• Height: 1.73"
• Accuracy: +/- (0.05 Of Input +/- 2 Count)
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: na

SCREW TERMINAL FUNCTIONS
To comply with the Low Voltage Directive (LVD 93/68/EEC), input voltages to the module’s connectors must not exceed 500VRMS. If voltages to be measured exceed
500VRMS, then fit scaling resistors externally to the module. If the mains power supply is connected to the module, then all the module’s connectors must be
considered to be floating at mains potential. Consequently due caution must be exercised when connecting to the module’s connector functions under these
conditions. The user must ensure that the incorporation of the DPM into the user’s equipment conforms to the relevant sections of BS EN 61010 (Safety Requirements
for Electrical Equipment for Measuring, Control and Laboratory Use).
Specifications liable to change without prior warning
COM
COM
HLD
ALM
Neutral
ACV
LP+
XDP
DP1
DP2
DP3
Phase 1
Phase 2
Phase 3
APPLICATIONS
WARNING : Do not apply in excess of 500V a.c. to the meter.
ACI
TST
V+
V+
LP-
V-
Alternating voltage measurement input, accepts up to 500V a.c. By changing the values of scaling resistors RA1, RA2 and RB1, other voltage and
current ranges can be achieved. To measure in excess of 500V a.c., remove RA1, RA2 and RB1 from the meter and fit an external divider that will output
Alternating current measurement input.
See Scaling table for suitable values for shunt resistor RB1.
Return line for voltage measurement input (ACV) or current measurement (ACI) input.
Return line for voltage measurement input (ACV) or current measurement (ACI) input.
Positive power supply input.
Negative power supply input.
Negative supply for LED backlighting.
Positive supply for LED backlighting.
Connect to V+ to display all segments except decimal points and annunciators.
to the LCD may “burn” the display. This connection is normally at 5V below V+
and is the ground for the digital section of the meter.
Digital Hold option. Connect to V+ to hold last displayed reading indefinitely.
Alarm “!” annunciator. Connect to XDP to display.
Annunciator drive waveform. Used to drive alarm annunciator (ALM) if required.
Auxilliary V+ for connections to decimal points DP1, DP2 or DP3.
199.9
19.99
1.999
700mV for a 2kV input, e.g. series resistor 1.12 M shunt resistor 390R, link RA1 and RA2 on the meter. See scaling table for suitable values for RA1,
RA2, RB1 and RD1.
It should not be operated for more than a few seconds as the DC voltage applied
Load
Load
Load
Connect to V+ to display required decimal point.
Connect to V+ to display required decimal point.
Connect to V+ to display required decimal point.
TEL: [phone] FAX: [phone]
3-Phase Current and Voltage
MODULE HOUSE, WHITEPARISH,
COM
COM
COM
COM
COM
COM
LASCAR ELECTRONICS LTD.
ACV
ACV
ACV
ACI
ACI
ACI
E-mail: [e-mail]
Measurement
WILTSHIRE SP5 2SJ
Voltage
Current
Voltage
Current
Voltage
Current
UK
V+
V-
V+
V-
V+
V-
V+
V-
V+
V-
V+
V-
+5V
+5V
+5V
-5V
-5V
-5V
PSU 303
PSU 303
PSU 303
W
110/240V
110/240V
110/240V
0V
0V
0V
DPM 970
SAFETY WARNING
TEL: [phone] FAX: [phone]
E-mail: [e-mail]
LASCAR ELECTRONICS INC.
Issue 7
3750 West 26th Street,
Neutral
Phase
Phase
Neutral
Erie, PA 16506
USA
Phase
Neutral
April/2007
Powering the LED backlighting on a DPM 970
from the PSU 303's +5V and COM outputs.
Load
Load
measure currents in excess of 10A a.c.
Single Phase Current and Voltage
Using a current transformer (CT) to
CT
COM
COM
COM
ACV
ACI
Measurement
ACI
111-113 How Ming Street, Kwun Tong, Kowloon,
TEL: [phone]
P.P.
LASCAR ELECTRONICS (HK) LIMITED
LP+
LP-
Unit Nos 6-8, on 19/F Futura Plaza,
E-mail: [e-mail]
Voltage
Current
Applies to DPM 970/4
V+
V-
V+
V+
V-
V+
V-
V-
Hong Kong
COM
+5V
+5V
+5V
-5V
-5V
-5V
FAX: [phone]
PSU 303
PSU 303
PSU 303
110/240V
110/240V
110/240V
0V
0V
0V