Subscribe to Our Youtube Channel
Related Manuals for Cropico D07 PLUS
Summary of Contents for Cropico D07 PLUS
- Page 1 Digital Microhmmeter Type DO7 PLUS Operating Instructions Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 TestEquipmentDepot.com...
- Page 2 Digital Microhmmeter Type DO7 PLUS Operating Instructions Limited Warranty & Limitation of Liability CROPICO guarantees this product for a period of 1 year. The period of warranty will be effective at the day of delivery. (c) Copyright 2009 All rights reserved. Nothing from this edition may be multiplied, or made public in any form or manner, either electronically, mechanically, by photocopying, recording, or in any manner, without prior written consent from CROPICO.
- Page 3 Digital Microhmmeter Type DO7 PLUS Operating Instructions Disposal of Old Product This product has been designed and manufactured with high quality materials and components that can be recycled and reused. When the crossed out wheelie bin symbol is attached to a product it means the product is covered by the European Directive 2002/96/EC.
- Page 4 Digital Microhmmeter Type DO7 PLUS Operating Instructions Section 1 – Instrument set-up and operation Table of Contents Page No. 1. Introduction Overview Standard Features of the DO7PLUS Definitions and Terminology Specification 1.4.1 Measurement Accuracy 1.4.2 Temperature Compensation accuracy 1.4.3 Conditions of Use 1.4.4 Lead Resistance 1.4.5...
- Page 5 Digital Microhmmeter Type DO7 PLUS Operating Instructions 1 INTRODUCTION 1.1 OVERVIEW The DO7PLUS Microhmmeter is a high accuracy instrument designed for industrial and laboratory resistance measurements. Its rugged case and robust construction ensures that accurate and reliable measurements are delivered even under the harshest of environments. The DO7PLUS is a true four wire measuring instrument eliminating the need to compensate for lead resistance.
- Page 6 Digital Microhmmeter Type DO7 PLUS Operating Instructions Standard features of the DO7PLUS Microhmmeter include: Graphical and Numerical display of electrical machine cooling curves Automatic temperature compensation Fast reading rate 2 measurements per second Measuring ranges from 6 mOhm to 6 kOhm Resolution 100 nOhm on 6mOhm range Up to 10 Amp measuring current Continuous measurement for inductive samples, single pulse measurement for fast...
- Page 7 Digital Microhmmeter Type DO7 PLUS Operating Instructions Specification Prior to connecting this instrument always ensure that the circuit under test is electrically isolated. Connecting this instrument to circuits which have not been isolated could lead to a hazard. 1.4.1 Measurement accuracy Measuring Range Resolution...
- Page 8 Digital Microhmmeter Type DO7 PLUS Operating Instructions 1.4.8 Weight and Size Size: 358 x 269 x 155 mm (W D H) Weight: 6.0 kg instrument only Weight Packed: 8.5kg Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 TestEquipmentDepot.com...
- Page 9 Only fuses with the rated current, voltage and specified type should be used. Failure to do so may cause an electric shock or fire hazard. Return the instrument to CROPICO for service and repair to ensure the safety features are maintained.
- Page 10 The battery pack can now be lifted out of the case. Place the new battery pack (Cropico part no 551A675) in the case and refit the rear panel screws and sealing washers. Plug the main unit battery leads back into the battery.
- Page 12 Digital Microhmmeter Type DO7 PLUS Operating Instructions MEASURE / STOP Starts and stops the measurement in continuous measurement mode. Triggers measurement in single measurement mode. Navigation and enter Key Moves display cursor and confirms selection. LIMITS Pass / Fail LEDS When limit function is set the green led lights to confirm measurement is within limits.
- Page 13 FAULT LEDS will illuminate. Should this occur the instrument should be taken out service and returned to a Cropico service centre for investigation and rectification. The power supply should not be opened, dismantled or mechanically interfered with.
- Page 14 Digital Microhmmeter Type DO7 PLUS Operating Instructions Measurement Window Displays: Measured value with sign and units. The selected measurement range, current and measurement mode. RX+ and RX value when in average mode. Compensated value and measured Rx value plus temperature when in temperature compensation mode.
- Page 15 Digital Microhmmeter Type DO7 PLUS Operating Instructions Instrument Set-up Setting the DO7PLUS instrument configuration These are the instrument housekeeping settings and once your preferences are selected and stored they will seldom need to be changed. To select and change a setting proceed as follows: PRESS F4 (SETUP) and the following screen will display SETUP MENU BACKLIGHT...
- Page 16 Digital Microhmmeter Type DO7 PLUS Operating Instructions F4 SETUP To enter the configuration menu PRESS F4 (SETUP) the following can then be set. Fig4.2.1 FUNCTION OPTIONS Description Switches backlight OFF Switches Backlight ON BACKLIGHT 10 60 Automatically switches off after 10...60 AUTO seconds seconds selectable...
- Page 17 Digital Microhmmeter Type DO7 PLUS Operating Instructions Setting the DO7PLUS Measurement Configuration To set or change a measurement configuration PRESS F3 (MENU) and the following screen will display INSTRUMENT MENU RANGE CURRENT AVERAGE TRIGGER SING/AUTO LIMITS DATA LOG TEMP COMP FILTER SETTLING CABLE MODE...
- Page 18 Digital Microhmmeter Type DO7 PLUS Operating Instructions FUNCTION OPTIONS OPTIONS 2 DESCRIPTION Switches Data Log OFF Switches Data Log ON Displays logged REVIEW measurements DELETE DELETE DATA LOG Deletes all logged values No RDGS Number of readings = Enter number of readings Enter time interval between TIMER Timer Interval =...
- Page 19 Digital Microhmmeter Type DO7 PLUS Operating Instructions FUNCTION OPTIONS OPTION 2 DESCRIPTION Switches cable mode OFF Enter number of cables to be Cables = CABLES measured Series Cables connected in series CONN Parallel Cables connected in parallel LENGTH LENGTH Length = Enter length of cable METRE CABLE...
- Page 20 Digital Microhmmeter Type DO7 PLUS Operating Instructions Do NOT use Auto range when measuring inductive devices e.g. motors and transformers. Fig 4.5.1 Measuring ranges with maximum current and resolution Range Measuring Current Resolution 6.0000m 100nΩ 60.000m 1μΩ 600.00m 100mA 10μΩ 6.0000Ω...
- Page 21 Digital Microhmmeter Type DO7 PLUS Operating Instructions ZERO MODE The DO7PLUS uses a four wire internal zero measurement. The current terminals are internally shorted together and the first measurement made. The potential terminals will measure any emf in the circuit and this value is stored. A second measurement is then performed with the current and potential leads connected in the normal way.
- Page 26 Digital Microhmmeter Type D07 PLUS Operating Instructions INSTRUMENT MENU STATS (1 -29): 4.9971 4.9939 4.9948 MEAN: 0.0032 0.00056 kQ HINT: will STATS only be calculated and displayed from measurements with the same will measuring conditions. E.g. Changing ranges prohibit STATS display.
- Page 28 Digital Microhmmeter Type DO7 PLUS Operating Instructions 4.9.9 TEMPerature COMPensation Temperature compensation is included in the DO7PLUS and should be used when measurements are required to be referenced to a set temperature, normally 20qC. This is particularly useful when measuring materials with a high temperature coefficient such as copper.
- Page 30 Digital Microhmmeter Type DO7 PLUS Operating Instructions 4.9.11 SETTLING The settling algorithm is particularly useful when measuring inductive devices such as motors, generators and transformers. With such devices it can take several seconds, and in the more extreme cases minutes, for the ohmmeter measuring current to charge the inductance and provide a steady and stable reading.
- Page 32 Digital Microhmmeter Type DO7 PLUS Operating Instructions The status of the memory store can be displayed by pressing LIST (F5) this will show which memories are free and which are in use. Memories can be cleared by pressing CLEAR (F4). If a memory is in operation, this will be displayed in the Status window, if any measurement parameter is sub sequentially changed (e.g.
- Page 33 Digital Microhmmeter Type DO7 PLUS Operating Instructions MEASURING WITH THE DO7PLUS Connecting to the DO7PLUS The DO7PLUS uses a four terminal method of measurement which eliminates errors due to lead resistance. The measuring leads plug into the four front panel safety sockets. The sockets are marked +U, U, +I, &...
- Page 34 Digital Microhmmeter Type DO7 PLUS Operating Instructions Fig: 5.2.1 Diagram of different connection configurations Connection to Cable Joint Connections to Current Shunt Connections to Stud Terminals Measurement with duplex handspikes...
- Page 35 Digital Microhmmeter Type DO7 PLUS Operating Instructions Resistance measurement The DO7PLUS should be in the measurement [STOP] mode. In this mode the measuring current is switched off and the current terminals are shorted internally. Connect the measuring leads as described in section 5.1 Before starting the measurement select the current mode required as described in section 4.6.
- Page 36 A UKAS calibration certificate is also available and should be ordered with the instrument if required. The calibration should be verified annually and if necessary adjusted. The unit may be returned to CROPICO who offer a full calibration service.
- Page 38 These update will be available on CD or may be downloaded from our website www.cropico.com. The updates may be uploaded via the USB or RS232 interface and full instructions will be provided.
- Page 39 Digital Microhmmeter Type DO7 PLUS Operating Instructions ACCESSORIES MEASURING LEADS The DO7PLUS may be used with a variety of lead sets. The following are the available selection. Remember, if you do not see suitable leads for your application, please consult our customer help desk.
-
Page 40: Table Of Contents
Digital Microhmmeter Type DO7 PLUS Operating Instructions SECTION 2 REMOTE CONTROL INTERFACE DO7PLUS DIGITAL MICROHMMETER USER MANUAL CONTENTS INTRODUCTION ................... SETTING UP THE COMMUNICATION LINK ............. RS 232 SERIAL PORT ................USB PORT ..................... FRONT PANEL SET UP ................CONFIGURING THE APPLICATION ............COMMUNICATING................... -
Page 41: Introduction
Digital Microhmmeter Type DO7 PLUS Operating Instructions INTRODUCTION T h e R e m o t e I n t e r f a c e p e r m i t s f u l l r e m o t e c o n t r o l o f t h e D O 7 P L U S b y a n e x t e r n a l c o m p u t e r . -
Page 42: Usb Port
Digital Microhmmeter Type DO7 PLUS Operating Instructions C T S i s a n i n p u t t o t h e m i c r o h m m e t e r a n d c o n t r o l s t h e t r a n s m i s s i o n o f c h a r a c t e r s . I f t h e P C a s s e r t s C T S ( l o w ) t h e n t h e m i c r o h m m e t e r w i l l t r a n s m i t t h e n e x t c h a r a c t e r f r o m t h e o u t p u t b u f f e r ( i f o n e i s w a i t i n g ) . -
Page 43: Configuring The Application
Digital Microhmmeter Type DO7 PLUS Operating Instructions T h i s m o d e i s u s e f u l f o r o p e r a t i o n s s u c h a s s e n d i n g r e s u l t s d i r e c t l y t o a p r i n t e r w i t h o u t t h e n e e d f o r a P C . -
Page 44: Programming The Interface
Digital Microhmmeter Type DO7 PLUS Operating Instructions III. PROGRAMMING THE INTERFACE INTRODUCTION T h e i n t e r f a c e i s p r o g r a m m e d i n a c o m m o n l a n g u a g e w h i c h i s b a s e d o n S C P I ( S t a n d a r d C o m m a n d s f o r P r o g r a m m a b l e I n s t r u m e n t s ) . - Page 45 Digital Microhmmeter Type DO7 PLUS Operating Instructions I f e x t r a , r e d u n d a n t p a r a m e t e r s a r e s e n t i n a p a r a m e t e r l i s t t h e y a r e s i m p l y i g n o r e d . N o e r r o r i s p r o d u c e d .
-
Page 46: Remote Interface Commands
Digital Microhmmeter Type DO7 PLUS Operating Instructions I n p u t M e s s a g e T e r m i n a t o r s A l l m e s s a g e s s e n t t o t h e i n s t r u m e n t m u s t t e r m i n a t e w i t h e i t h e r a < l f > c h a r a c t e r o r a <... -
Page 47: Configuration Commands
Digital Microhmmeter Type DO7 PLUS Operating Instructions CONFIGURATION COMMANDS T h e s e c o m m a n d s a l l o w t h e m e a s u r e m e n t c o n f i g u r a t i o n t o b e s e t u p , b u t t h e y d o n o t t r i g g e r a m e a s u r e m e n t . - Page 48 Digital Microhmmeter Type DO7 PLUS Operating Instructions O N ) , t h e n t r i g g e r i n g a m e a s u r e m e n t b y e i t h e r m e t h o d w i l l c a u s e m e a s u r e m e n t s t o s t a r t , a n d t o c o n t i n u e u n t i l o n e o f t h e f o l l o w i n g o c c u r s : x T h e t r i g g e r m o d e i s c h a n g e d t o S i n g l e .
-
Page 49: Datalog Commands
Digital Microhmmeter Type DO7 PLUS Operating Instructions T h i s i s t r u e f o r b a s i c o p e r a t i o n , b u t s e e a b o v e i f t h e D a t a l o g D e l a y T i m e r i s i n u s e . -
Page 50: Temperature Compensation Commands
Digital Microhmmeter Type DO7 PLUS Operating Instructions M E M o r y: D A T A : S T A T e < O N | O F F > o r < 1 | 0 > E n a b l e s o r d i s a b l e s t h e D a t a l o g f u n c t i o n . W h e n t u r n e d o n , a l l r e a d i n g s a r e s e n t t o t h e D a t a l o g m e m o r y . -
Page 51: Measurement Limit Commands
Digital Microhmmeter Type DO7 PLUS Operating Instructions S E N S e : T C O M p e n s a t e : S T A T e ? R e t u r n s “ 0 ” ( O F F ) o r “ 1 ” ( O N ) . S E N S e : T C O M p e n s a t e : M O D E <... -
Page 52: Filter (Rolling Average) Commands
Digital Microhmmeter Type DO7 PLUS Operating Instructions FILTER (ROLLING AVERAGE) COMMANDS T h e s e c o m m a n d s a r e u s e d t o c o n t r o l t h e F i l t e r f u n c t i o n . S E N S e : A V E R a g e : S T A T e <... -
Page 53: Y S T Em R E L At Ed Commands
Digital Microhmmeter Type DO7 PLUS Operating Instructions SYSTEM RELATED COMMANDS S Y S T e m : R E M o t e P l a c e s t h e i n s t r u m e n t i n r e m o t e m o d e ( s e e S e c t i o n B ) . S Y S T e m : L O C a l R e t u r n s t h e i n s t r u m e n t t o t h e l o c a l ( m a n u a l ) m o d e f r o m r e m o t e m o d e ( s e e S e c t i o n B ) . - Page 54 Digital Microhmmeter Type DO7 PLUS Operating Instructions * R S T R e s e t s t h e i n s t r u m e n t t o t h e d e f a u l t R E S E T c o n d i t i o n a s d e s c r i b e d b e l o w , a n d p l a c e s t h e m e a s u r e m e n t i n S t a n d b y m o d e .
- Page 55 Digital Microhmmeter Type DO7 PLUS Operating Instructions APPENDIX I REMOTE COMMAND SUMMARY C o n f i g u r a t i o n C o m m a n d s S E N S e : F R E S i s t a n c e : R A N G e < r a n g e > F R E S i s t a n c e : R A N G e ? S O U R c e : C U R R e n t <...
- Page 56 Digital Microhmmeter Type DO7 PLUS Operating Instructions M e a s u r e m e n t L i m i t C o m m a n d s C A L C u l a t e : L I M i t : L O W e r <...
- Page 57 Digital Microhmmeter Type DO7 PLUS Operating Instructions APPENDIX II RS-232 Pin Connections R e m o t e S t a r t ( i n p u t ) R X D R e c e i v e d D a t a ( i n p u t ) T X D T r a n s m i t t e d D a t a...
- Page 58 Operating Instructions...
- Page 60 551A550 Rev 3...
Need help?
Do you have a question about the D07 PLUS and is the answer not in the manual?
Questions and answers