Trumeter DPM 812 Configuración página 2

Specification
Display
• 61mm (2.4") x 18mm (0.71")
• 4 x 11mm characters
• 40 segment bargraph
• Leading zero blankng
• Annunciators: low battery, x10,
x100, DC, AC, –, µ, m, A, V,
MIN, MAX
Input Range (see page 7)
• 812: DC
822: AC
• ±0.1mV to 300.0V
• ±0.1µA to 10A
Accuracy
(±1 least significant digit)
• 812 V, µA, mA: ±2%
A: ±3%
• 822 40–650 Hz: as above
650–2700 Hz: ±5%
Linearity
• ±0.1% full scale
Connections
Power and Control
1 VDD 5VDC to 16VDC
2 VSS 0V
3 Backlight BL+ (see page 7)
4 Backlight BL- (see page 7)
5 Control common
6 not connected
7 Control common
8 MAX/MIN (see page 8)
9 RS232 trigger
10 RS232 output
Control inputs
Control Common (pins 5 and 7)
is held at –3V. Do NOT connect
to any pin except pins 8 and 9.
812/
822
100–1000mS
8, 9
5,7
RS232 trigger
Connect to Control common once to start the RS232 data stream.
Connect to Control common again to stop.
2
Sample Rate
• 1 Sec
Input impedance
• V: 10MΩ
• 0 to 399.9 µA: 500Ω
• 400 to 3999µA: 50Ω
• 0 to 39.9mA: 5Ω
• 40 to 399.9mA: 0.5Ω
• 0 to 10A: 0.005Ω
Connections
• Input: Finger-proof screw
connections for wires up to
1.5mm²
• Power and control: 2 x 5 way
0.1" spacing
Control Inputs
• Sink or contact only
RS232 output
• 2400 baud, 7 bits, odd parity, 1
stop bit (contact Trumeter for
details of data format)
RS232 output
Connect a resistor externally as shown
below.
VDD
2K2
1
¼W
812/
822
10
2
VSS
Supply
• 5 to 16VDC ± 10%, 15mA max
• Backlight (red, green): 9V/12V
±0.5V selectable, 40mA max
• Backlight (white, blue):
12V ±0.5V only, 40mA max
Installation Category (IEC 664)
• Overvoltage Category II
• Pollution Degree 2 (IEC 64)
Operating temperature
• 0°C to +60°C
Storage temperature
• -20°C to +70°C
Environmental protection
• IP50
Altitude
• Up to 3000m
Relative Humidity
• 85% max non-condensing
Backlight voltage
selection
(see page 7)
10 9
8 7
6 5
4 3
2 1
1 2 3
W
Input (see pages 7, 11)
812: DC measurement
822: AC measurement
1 INHI
±0.1mV to 300.0V
±0.1µA to 3999µA
±0.01mA to 399.9mA
2 INHI
±0.01A to 10.0A
3 INLO (0V)
Note:
Any signal cables
connected to this device
must not exceed 30 metres
in length.
If signal cables are
installed that are routed
outside the building, it will
be necessary to install
additional surge protection
devices.
The maximum voltage
allowed for any
connection to the PCB is
300V.
INLO (0V) is internally
connected to VSS (0V)