Seaward DO4A Manual de Usario

Seaward Equipo de medición DO4A

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DO4A
Rugged, portable digital ohmmeter digital with
calibration and 4,000 count
The DO4A is a practical instrument for low resistance measurement, ideal for
use in the workshop, field or test facilities.
It is of rugged construction contained in an aluminium case with tilt handle.
The DO4A has many advanced features, digital calibration and long scale
length (4,000 count).
The rechargeable sealed lead acid battery means real portability with
more than 14 hours continuous operation. Full measurement capability is
maintained while charging. For ease of operation the control functions have
been kept to a minimum and are clearly marked.
It is of course direct reading, warning LEDs illuminate when an open circuit
lead condition is detected. Over range and low battery indication is also
provided. The DO4A is supplied ready for immediate use with battery, mains
cord and measuring leads, no extras are normally necessary.
The 15mm LCD provides easy viewing and the instrument can be used in
any position for many and varied applications. The test leads provided have a
length of 1m with spade tags for connection to the ohmmeter terminals.
They are terminated in combined current and potential probes that will
accept conductor diameters up to 6mm.
www.seaward.co.uk/DO4A
For USA, Canada and Mexico enquiries Tel: +1 (813) 886 - 2775
For all other enquiries Tel: +44 (0) 191 587 8741
Email: sales@seaward.co.uk
Key Features
True 4 wire measurement eliminates
lead resistance errors
6 push button ranges 40mΩ Ω - 4k
with long scale length
10μ resolution on 40m rangeΩ Ω
Zero control thermal E.M.F.
compensation
Digital calibration
Mains/rechargeable battery
operation
Open circuit lead warning
Rugged industrial maintenance free
design
Universal mains supply 100/200/
220/240V +10% - 13%
Ideal For
Aerospace
Drivers and electrical machines
Military
Manufacturing
Utilities, electrical, water and gas
DO74A Plus Optional Accessories
Code Item Part Number
C02 1m cable clamp with metal base for the precise measurement of 1m cable samples 0.1–100mm2930150
C02A 1m cable clamp with metal base for the precise measurement of 1m cable samples 1–1000mm2930214
C03 1m cable clamp with water bath for the precise measurement of 1m cable samples 1–1000mm2930419
HS01 Duplex handspikes with 3m lead length 190082
HS02 Duplex handspikes with 3 and 15 m lead length 190055
LS03 Lead set with 2 x 3m leads terminated in large Kelvin clips type KC3 190042
LS04 Lead set with 3 and 15m lead length terminated in large Kelvin clips type KC3 190046
LS05 Lead set with 4 x 1m leads terminated in banana plugs, 4 x crocodile clips, 4 x test probes and 2
x Kelvin clips type KC1 190004
LS06 Lead set with 1m leads terminated in miniature Kelvin clips type KC2 190007
MTS2 Calibration standard 930241
www.seaward.co.uk/DO4A
For USA, Canada and Mexico enquiries Tel: +1 (813) 886 - 2775
For all other enquiries Tel: +44 (0) 191 587 8741
Email: sales@seaward.co.uk
Technical Specifications
General Specifications
Dimensions
15 x 250 x 88mm / 0.5 x 9.8 x 3.5” (w x d x h) approx
1/2 19” rack 2U high
467 x 374 x 216mm / 18 x 15 x 8.5” (w x d x h) packed in carton
Mass
3.5kg / 8lbs approx. 4.5kg / 10lbs packed in carton
Working Temperature
0 to +40°C re. humidity 80% max. non-condensing
Storage Temperature
-20 to +50°C
Services
1 year warranty (subject to product registration with Seaward. Visit
www.seaward.co.uk/register-product)
Service and calibration by Calibrationhouse.
Go to www.calibrationhouse.com for more information.
Part Number
930127
Range Resolution Typical Current Accuracy @ 20°C±5°C 1 year Temperature Coefficient (°C)
4k 1 100μA ±(0.05% Rdg +0.02% FS) 30ppm Rdg + 1ppm FSΩ Ω
400 100 1mA ±(0.05% Rdg +0.02% FS) 30ppm Rdg + 1ppm FSΩ Ω
40 10 10mA ±(0.05% Rdg +0.02% FS) 30ppm Rdg + 1ppm FSΩ Ω
4 1m 10mA ± (0.05% Rdg +0.03% FS) 30ppm Rdg + 4ppm FSΩ Ω
400m 100μ 10mA ± (0.05% Rdg +0.05% FS) 30ppm Rdg + 25ppm FSΩ Ω
40m 10μ 100mA ± (0.05% Rdg +0.05% FS) 30ppm Rdg + 25ppm FSΩ Ω
Measurement
4 terminal Kelvin/Thomson principle eliminates errors due
to lead resistance
Display
15mm LCD 4000 count with automatic decimal point
and polarity indication
Ranges
6 push button selected with LED indication
Terminals
4mm binding posts accept spade tags and 4mm banana plugs
Mains Supply
100/120/220/240V +10% to 13%
47 - 63Hz 20VA
Safety
EN 61010-1 EMC 61326
Calibration
Digital security key protected
Auto Zero
Permits the automatic zero of amplifiers and external circuits,
eliminating errors due to thermal E.M.F.
Battery
6V 2.8Ah sealed lead acid battery with built-in charger. 14 hour
typical operating time on lowest range, 28 hours typical on other
ranges. Internal charger and automatic switch off.
Rev 3

Especificaciones del producto

Marca: Seaward
Categoría: Equipo de medición
Modelo: DO4A

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