Time Electronics 7005 Manual de usuario

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: +44 (0) 1732 355993 | F: +44 (0) 1732 350198

mail@timeelectronics.co.uk | www.timeelectronics.com

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.

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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:

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