Trumeter 7760 Manual De Instrucciones página 3

SPECIFICATION
Numeric Display
6 digit Supertwist, 9.6mm characters. Locatable
decimal point to 0, 1, 2 or 3 places of decimals.
Annunciators
PROGRAM (mode), PERIOD or GATED
(modes), TOTALISER, MULTIPLIER or
DIVIDER (prescalers).
Ranges
Totaliser: 0-999999 with roll over to 0.
Period mode Measurement: 3-19,999 PPM
(1/20 Hz-333.3Hz).
Gated mode Measurement: 0-50kHz.
Timebase
Gated Mode Timebase: 0.01-9.999S adjustable
in 1mS intervals.
Accuracy
Both Gated and Period modes: ±1 least
significant digit or 0.18% whichever is the
greater.
Prescalers
Period Mode Divider: 1-9999
Period Mode Multiplier: 0.01-9.999 in 0.001
increments
Totaliser Divider: 1-9999
Totaliser Multiplier: 0.01-9.999 in 0.001
increments
Factory Default Settings
Unit adopts Period mode on initial power up
Annunciators: PERIOD annunciator only
Period Mode Divider Prescaler: 1
Period Mode Multiplier Prescaler: 1.000
Totaliser Divider Prescaler: 1
Totaliser Multiplier Prescaler: 1.000
Gated Mode Timebase: 1 second
Decimal places: 0
CONNECTIONS (page 2)
Pin Function
1 Common
2 Low Speed (Contact Closure) input
3 High Speed (Electronic) input
4 Program mode disable
5 Supply. (No backlight 10-30vdc; with
backlight 12 or 24VDC ±10%)
Program and Data Security
Internal E² PROM retains program indefinitely
after power loss.
Pin 4 allows programming functions to be
disabled by connecting to 0V DC.
Low Speed (Contact closure) Input
30Hz maximum frequency. 0.7v threshold,
15mS minimum closure time. Negative edge
triggered.
High Speed (Electronic) Input
50kHz maximum frequency. Logic 0: <0.7v DC,
logic 1: >2.4v DC. Open Collector, TTL/CMOS
compatible, Maximum input 18V. 10µS minimum
pulse length. Negative edge triggered.
Dimensions
Front 72mm x 36mm. Depth 32mm (excl
connector)
Panel Cutout
69mm x 33mm +0.2, -0mm.
Power Supply
With backlight: 12VDC ±10% at 100mA
24VDC ±10% at 50mA
Without backlight:10-30VDC at 8mA
Operating temperature
-10°C to +50°C
Storage temperature
-10°C to +70°C
Housing
Black die-cast aluminium
Mounting
Panel mounting using supplied clip
Sealing
IP65/NEMA4 using gasket supplied
When selecting the backlight, two
jumper links are also supplied and must
be set to suit the DC supply voltage i.e.
12V or 24V ±10%.
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