Time Electronics 7005 User manual

User Manual
7005
Voltage/Current Loop Calibrator
Version 1.3
March 2022
Time Electronics Ltd
Unit 5, TON Business Park, 2-8 Morley Road,
Tonbridge, Kent, TN9 1RA, United Kingdom.
T: [phone] | F: [phone]
[e-mail] | www.timeelectronics.com

© 2022 Time Electronics Ltd.
All rights reserved.
Nothing from this manual may be multiplied, or made public in any form or manner, either
electronically or hard copy, without prior written consent from Time Electronics Ltd.
This also applies to any schematics, drawings and diagrams contained herein.
This manual provides operating and safety instructions for the Time Electronics product.
To ensure correct operation and safety, please follow the instructions in this manual.
Time Electronics reserves the right to change the contents, specifications and other
information contained in this manual without notice.

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Contents
1Introduction....................................................................................................................................4
1.1 Summary of Functions...........................................................................................................................5
1.2 Technical Specifications ........................................................................................................................6
2Front Panel Controls .....................................................................................................................7
2.1 Main Control Buttons .............................................................................................................................7
2.2 Setup Option Buttons ............................................................................................................................8
3Connections...................................................................................................................................9
3.1 CURRENT loop connections .................................................................................................................9
3.2 VOLTAGE loop connections................................................................................................................ 10
4Operation......................................................................................................................................11
4.1 ON/OFF Control ..................................................................................................................................11
4.2 Selecting Source or Measure Mode ....................................................................................................11
4.3 Selecting Current or Voltage................................................................................................................ 11
4.4 Source mode .......................................................................................................................................12
4.5 Measure Mode..................................................................................................................................... 19
4.6 User Setup........................................................................................................................................... 22
5Battery and Re-Charging ............................................................................................................25
6Warranty and Servicing............................................................................................................... 26

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1Introduction
A precision instrument primarily used for the calibration and simulation of voltage and current
loops. The 7005 is a high accuracy calibrator incorporating source and measure capabilities.
With user friendly controls and simple operation the 7005 is an excellent instrument for both
process engineers and calibration technicians.
The three operating modes provide a fast and easy solution to process applications;
•Loop current/voltage source for simulating a transmitter and the loop supply
•Sink of loop current for simulating a transmitter
•Measurement of loop current/voltage for simulating a loop indicator
Manual step of the output is possible at five calibration points; 0 %, 25 %, 50 %, 75 % and
100 % of span. Automatic stepping of the output is also available, both up and down with
programmable dwell times. Continuous up/down ramping can also be performed, with user
programmable ramp rates and dwell time (top and bottom).

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In source mode the range can be user programmed to any value between 0 mA and 50 mA,
or 0V and 21 V. For example, a low point of 10mA and a high point of 50 mA could be set
giving a span of 40 mA.
Measure mode provides both voltage and current measuring capability with 5 digit
resolution. Ranges are 0 to ± 5 V and ± 5 to ± 25 V, 0 to ± 25 mA and ± 25 to ± 125 mA.
Alternatively, the signal can be measured as a % of span for the following ranges; 4 to 20
mA, 0 to 20 mA, square root 4 to 20 mA, or square root 0 to 20 mA. For all measurements a
Min/Max recording function is available on demand.
An internal NiMH battery powers the unit for typically 9 hours continuous use and an external
mains charger is supplied as standard. An automatic power-down feature is incorporated to
conserve battery life, which can easily be disabled if not required.
The unit is constructed in an impact resistant ABS case and connections are made via 4 off
4 mm binding terminal posts.
1.1 Summary of Functions
1.1.1 Source mode
•User programmable ranges - any values between 0 and 50 mA or 0 and 21 V.
•Fixed ranges are available: 4 to 20 mA, 0 to 20 mA, sqrt 4 to 20 mA, sqrt 0 to 20 mA.
•Fine adjustment (inching) is available for precise deviation from the calibration point.
•Manual step output - five calibration points 0 %, 25 %, 50 %, 75 %, and 100 %.
•Automatic step output (up/down) - five cal points with programmable dwell period.
•Ramp output - programmable ramp rate (0 to 20 mA/sec or 0 to 20 V/sec).
Programmable dwell period (0 to 1000 seconds).
1.1.2 Measure mode
•Voltage and current measuring capability with 5 digit resolution.
•Ranges: 0 to ± 5 V and ± 5 to ± 25 V, 0 to ± 25 mA and ± 25 to ± 125 mA.
•Signal can also be measured as a % of span on ranges: 4 to 20 mA, 0 to 20 mA,
square root 4 to 20 mA, square root 0 to 20 mA.
•For all measurements a Min/Max recording function is available on demand.

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1.2 Technical Specifications
Voltage Source
Range Resolution Accuracy Output current Output resistance
0 to 21 V 1 mV ± 0.01 % of setting ± 4 mV 50 mA < 1 Ω
DC Voltage measure (0 to ± 25 V, auto-ranging)
Range Resolution Accuracy Measure load
0 to 5 V 0.1 mV ± 0.01 % of reading ± 0.4 mV 10 MΩ
5 to 25 V 1 mV ± 0.01 % of reading ± 2 mV 10 MΩ
DC Current source
Range Resolution Accuracy Output voltage Loop resistance
0 to 50 mA 1 μA ± 0.01 % of setting ± 2 μA 22 V Max 1100 Ω @ 20 mA
DC Current measure (0 to ± 125mA, auto-ranging)
Range Resolution Accuracy Measure load
0 to 25 mA 1 μA ± 0.01 % of reading ± 2 μA 24.5 Ω
25 to 125 mA 10 μA ± 0.01 % of reading ± 20 μA 24.5 Ω
DC Current source
Range Resolution Accuracy Min external drive Max external drive
0 to 50 mA 1 μA ± 0.01 % of setting ± 2 μA 4 V 40 V
1.2.1 General Specifications
Operating temperature .........–10 to 50 °C. Storage temperature –30 to 70 °C.
Operating humidity ...............0 to 90 % non-condensing at 25 °C.
Dimensions/Weight...............H 165 x W 90 x D 45 mm / 0.42 kg.
Power .....................................Internal rechargeable NiMH battery pack. Battery life typically
9 hours. Auto power-down feature. Full recharge from being
exhausted will take approximately 16 hours with the unit
switched off.
Optional extras......................Calibration certificates: Traceable & accredited (ISO 17025).

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2Front Panel Controls
2.1 Main Control Buttons
Press and hold for
power ON and OFF.
When the 7005 is on,
a short press to
access the user setup
options.
Press to toggle
between Measure and
Source mode
In Measure mode:
displays Min and Max
values
In Source mode:
Press and hold for
‘inching’ operation
Selects one of the
following 5 ranges:
•User programmed
•4 - 20 mA
•0 - 20 mA
•Sqrt 4 - 20mA
•Sqrt 0 - 20mA
In Source and
Manual Step mode:
Steps up and down
In Source and
Inching mode:
Moves output
up and down
In Measure mode:
Toggles between V
and mA
In Source mode:
Toggles between
ramp and manual step
In Source mode:
Press both together
for auto step

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2.2 Setup Option Buttons
When the 7005 is powered on, a short press of the
ON/OFF/Esc button accesses the setup options. To use the
programmable settings for sourcing, the 7005 must be in the
source mode with the range selected prior to pressing the
ON/OFF/Esc button (see Operation Section).
In measure mode there are no selectable user setting
options, only the automatic power-down can be enabled/disabled.
The controls for setup options are indicated in the bottom left corners of the buttons, and
used to navigate and save settings.
A. Move cursor right.
B. Increment digit.
C. Scroll through options.
D. Confirm and Save setting.
The ON/OFF/Esc button is used to exit the setup menus at any time.
A
B
C
C
D

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3Connections
Connections is via 4mm shrouded sockets at the top of the 7005.
3.1 CURRENT loop connections
Source: 7005 supplying loop power and setting loop current:
Sink: 7005 setting loop current:

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Measure: 7005 supplying loop power while measuring loop current:
Measure: 7005 measuring loop current, loop power external
3.2 VOLTAGE loop connections
Source: 7005 setting loop voltage:
Measure: 7005 measuring loop Voltage: