Time Electronics 1044DC User Manual [en, de, fr]
Time Electronic s
1044 Voltage and Current Calibrator
Technical Manual
V1.1 09/01/11 Time Electronics Ltd
Botany Industrial Estate, Tonbridge, Kent, TN9 1RH
Tel: +44(0)1732 355993 Fax: +44(0)1732 770312
Email: mail@TimeElectronics.co.uk
Web Site: www.TimeElectronic s .com
2
Contents
1. Introduction ........................................................................................................ 3
2. S pecifications ..................................................................................................... 4
3. Opera tion of the 1044 ........................................................................................ 6
3.1. Preliminary .......................................................................................................... 7
3.2. Setting a voltage output ..................................................................................... 7
3.3. Setting a current output ..................................................................................... 7
3.4. Measuring a voltage input .................................................................................. 8
3.5. Measuring a current input .................................................................................. 8
4. Opera tion of the 4-20mA S ys tem ...................................................................... 9
5. B attery Replacement ....................................................................................... 10
6. R ecalibration .................................................................................................... 11
7. F ault Diagnos tic s ............................................................................................. 12
8. Guarantee & S ervicing ..................................................................................... 13
Manuel Technique (Francais) ................................................................................. 14
Technis ches Handbuch (Deutsch)......................................................................... 28
All Time Electronics' instruments are subject to continuous development and improvement and in
consequence may incorporate minor detail changes from the information contained herein.
V1.1 09/01/11 Page | 2 1044 Technical Manual
1. Introduction
3
The 1044 has been designed to offer solutions in many applications from the R&D lab to the
service engineer; in fact anywhere an accurate and low cost calibrator is needed.
We have used our experience in designing instrumentation to bring you the most versatile
and practical calibrator yet. The 1044 can source and measure voltage and current in one
compact unit and the 0.05% accuracy is ideal for simulation and calibration in most
engineering applications.
Being virtually foolproof in operation, the 1044 combines the advantages of digital accuracy
with analog controls. Progressing from the familiar functions of our popular 1030 calibrator,
the 1044 offers more ranges, better accuracy and the ability to measure as well as source,
making it even more of an asset.
The large, easy to read LCD display shows the actual output, even if the connected load
exceeds the specifications. This important feature eliminates the risk of large errors when
connecting to unknown loads. The display even shows if the battery becomes low.
In the source mode, voltage up to 20v and current up to 20mA may be generated in three
ranges, whilst in current source mode; the 1044 has a high 24V compliance voltage which is
ideal powering process control loops.
In the measurement mode, the range and function can be easily selected and will operate
as a multimeter. The measured input is accurately shown on the LCD display.
The 1044 is housed in a pocket sized, rugged ABS case and comes with a leatherette carry
case containing a compartment for storing test leads. Connections are by standard 4mm
plugs or by simply clamping the wires under the terminals.
The instrument is powered from an internal 9V alkaline battery (see page 10). Alternatively
the 1044 can be powered from an optional external linear AC/DC power supply (Time
Electronics code 7643). If power is supplied via other means, such as an in-vehicle 12V DC
socket, a 200mA fuse must be fitted to the socket adaptor.
V1.1 09/01/11 Page | 3 1044 Technical Manual
2. Specifications
RANGES
Range Resolution Accuracy O/P Current T/C per °C
4
Voltage Source
0 - 200mV
0 - 2V
0 - 20V
100uV
1mV
10mV
± 0.05%
+
± 2 Counts
20mA
± 150ppm
Voltage Measure
Range Resolution Accuracy O/P Voltage T/C per °C
0 - 200mV
0 - 2V
0 - 20V
100uV
1mV
10mV
± 0.05%
+
± 2 Counts
<2V = 1MΩ
<20V =
10MΩ
± 150ppm
Current Source
Range Resolution Accuracy O/P Voltage T/C per °C
0 - 200uA
0 - 2mA
0 - 20mA
100nA
1uA
10uA
± 0.05%
+
± 3 Counts
24V Max
± 200ppm
Current Measure
Range Resolution Accuracy Impedance T/C per °C
0 - 200uA
0 - 2mA
0 - 20mA
100nA
1uA
10uA
± 0.05%
+
± 3 Counts
10Ω
± 200ppm
V1.1 09/01/11 Page | 4 1044 Technical Manual
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