Omega | MDS8PT | Owner Manual | Omega MDS8PT Owner Manual

Omega MDS8PT Owner Manual
MDS8PT
Universal Temperature & Process
Benchtop Meter with Alarms
omega.com info@omega.com
U.S.A.
Servicing North America:
Omega Engineering, Inc.
Toll-Free: 1-800-826-6342 (USA & Canada only)
Customer Service: 1-800-622-2378 (USA & Canada only)
Engineering Service: 1-800-872-9436 (USA & Canada only)
Tel: (203) 359-1660 Fax: (203) 359-7700
e-mail: info@omega.com
For Other Locations Visit omega.com/worldwide
PROPRIETARY STATEMENT - This manual contains proprietary design information representing Omega Engineering Inc. It is intended solely for the
Information and use of parties operating and maintaining the equipment described herein. Such proprietary information may not be used, reproduced, or
disclosed to any other parties for any other purpose without the expressed written permission of Omega Inc.
TABLE OF CONTENTS
SECTION 1 INTRODUCTION
1.1 Safety and Precautions ........................................................................................ 1
1.2 Cautions and IEC Symbols .................................................................................. 1
1.3 Statement on
Marking ................................................................................ 2
1.4 Available Models .................................................................................................. 2
1.5. Communication .................................................................................................... 2
1.6 Reference Manuals .............................................................................................. 2
SECTION 2 UNPACKING
2.1 Inspection ............................................................................................................. 3
2.2 Power Cords ......................................................................................................... 4
SECTION 3 HARDWARE SETUP
3.1 MDS8PT Front Panel ........................................................................................... 5
3.1.1...10-Pin Connector ............................................................................................ 6
3.1.2...RTD Wiring Diagram Connector ...................................................................... 7
3.1.3...Process Current Wiring Diagram ..................................................................... 7
3.1.4...Universal Thermocouple Connector ................................................................ 8
3.2 MDS8PT Rear Panel ............................................................................................ 9
3.2.1... Screw Terminals ........................................................................................... 10
SECTION 4 CONFIGURATION AND PROGRAMMING
4.1 Controls ............................................................................................................... 11
4.2 Menu Structure ................................................................................................... 12
4.3 Selecting an Input ............................................................................................... 13
4.4 Alarm Configuration (PRoG > ALM. #) .................................................................14
4.4.1...Setting Alarm Type .........................................................................................14
4.4.2...Setting Alarm High/Low References .............................................................15
4.4.3...Setting the Alarm Color (PRoG > ALM.# > A.CLR) ........................................15
4.4.4...Activating a Relay (PRog > dtR# > Mode) .....................................................15
4.5 Analog Output ......................................................................................................16
4.5.1...Select an Output Type ....................................................................................16
4.5.2...Set Mode to Retransmission ..........................................................................16
4.5.3...Set Scaling .....................................................................................................16
SECTION 5 SPECIFICATION
5.1 Approval Information ........................................................................................... 17
SECTION 6 MAINTENANCE .......................................................................................... 18
TABLE OF FIGURES
Figure 1.
Accessories Packaged with MDS8PT Unit ................................................... 3
Figure 2.
MDS8PT Front Panel .................................................................................. 5
Figure 3.
10-Pin Connector Input Pin Assignments ..................................................... 6
Figure 4.
RTD Wiring Diagram .................................................................................. 7
Figure 5.
4-20 mA Sensor Wiring Diagram ................................................................ 7
Figure 6.
Mini/Standard Thermocouple ...................................................................... 8
Figure 7.
MDS8PT Rear Panel .................................................................................. 9
Figure 8.
Benchtop Meter Wiring Diagram ................................................................ 10
Figure 9. MDS8PT LED Display ................................................................................ 11
Figure 10. Circular Flow of Menus ............................................................................... 12
Figure 11. Alarm Range Option Diagram ..............................................................,.... 14
Figure 12. Alarm Scaling Diagram .............................................................................. 16
TABLE OF TABLES
TABLES
Table 1. IEC Symbols .................................................................................................. 1
Table 2. Model Features................................................................................................ 2
Table 3. Supporting Documents .................................................................................. 2
Table 4. Package Contents .......................................................................................... 3
Table 5. Optional Power Cords .................................................................................... 4
Table 6. Front Panel Components List ........................................................................ 5
Table 7. Sensor Inputs Assignments ........................................................................... 6
Table 8. Rear Panel Component locations .................................................................. 9
Table 9. Configuration for Terminals ........................................................................... 10
Table 10. Selecting an Input
........................................................................................ 13
Table 11. Benchtop Meter Specifications Summary .................................................... 17
Table 12. Fuses ............................................................................................................ 18
SECTION 1 INTRODUCTION
The MDS8PT Platinum Series Universal Benchtop Digital Meter (Benchtop Meter), is ideal for
laboratory and other application uses requiring portable temperature or process measurement.
It features a universal input configured for use with a thermocouple, RTD, Thermistor or
Voltage/Current signal. The Benchtop Meter is factory configured and calibrated for use out of
the box.
It is important to read and follow all precautions and instructions in this manual and other
referenced manuals, before operating or commissioning this device, as it contains important
information relating to safety and EMC.
1.1
Safety and Precautions
•
•
•
•
•
•
Do not exceed the voltage rating.
Always disconnect the power before changing the signal and power connections.
Do not operate in flammable or explosive environments. Never operate with a power cord that is not properly rated for use with this unit.
Remove and or disconnect main power cord before attempting any maintenance or
fuse replacement.
Do not connect and/or operate this unit to a non-grounded or non-polarized outlet or
power source.
There are no user serviceable parts inside unit. Attempting to repair or
service unit may void the warranty.
This product is not designed for medical applications.
1.2
Cautions and IEC Symbols
This device is marked with international safety and hazard symbols shown in Table 1
below, in accordance with EN61010 3rd Edition 2012. It is important to read and follow
all precautions and instructions in this manual before operating or commissioning this
device as it contains important information relating to safety and EMC. Failure to follow
all safety precautions may result in injury and/or damage to the meter. Use of this device
in a manner not specified by the manufacturer may impair protection devices and safety
features provided by the unit.
Table 1. IEC Symbols
IEC SYMBOLS
DESCRIPTION
CAUTION, risk of electrical shock
CAUTION, refer to accompanying documents
1
1.3
Statement on
Marking
OMEGA policy is to comply with all worldwide safety and EMI/EMC regulations that
apply to CE Certification standards, including EMC Directive 2014/30/EU LVD (Safety)
Directive 2014/35/EU, and EEE RoHS II Directive 2011/65/EU. OMEGA is constantly
pursuing certification of its products to the European New Approach Directives. OMEGA
will add the
marking to every applicable device upon verification of compliance.
1.4
Available Models
The Universal Benchtop Meter has two available models with features as listed in Table 2.
Table 2. Model Features
Model
Features
MDS8PT-330-C24-EIP
-EIP
-C24
-330
Benchtop Meter
Ethernet
Isolated RS232 and RS485
Dual Alarm Relays
-A
Isolated Analog Output
MDS8PT-330
-330
1.5.
Benchtop Meter
Dual Alarm Relays (ONLY)
Communication
The Platinum Series Benchtop Meter uses a standard USB port compatible with the
Omega Platinum configuration software, available from the Omega website; as well as
Optional serial and Ethernet connectivity manuals. All communication options support
both the Omega ASCII protocol, Modbus ASCII, Modbus RTU and Modbus TCP/IP.
Refer to Table 3 for supporting manuals.
1.6
Reference Manuals
Refer to these supporting documents for complete information about operation and
configuration of the Benchtop Meter.
Table 3. Supporting Documentation
Number
Title
M5460
Platinum Series Temperature and Process Meters - User’s Manual
M5461
Software Configuration - User’s Manual
M5451
Platinum Series Temperature and Process Controllers - User’s Manual
M5452
Serial Communication Protocol
M5458
Platinum Series User Manual - Modbus Interface
2
SECTION 2 UNPACKING
Read the packing list, it is important to verify all equipment shipped has been delivered as
shown in Figure 1 and Table 4. If there are any questions about the shipment please email or
call the Customer Service Department listed in this manual.
2.1
Inspection
Inspect the shipment container and equipment for any signs of damage. Record any
evidence of rough handling in transit and report any damage immediately to the shipping
agent.
Save packaging material and carton in the event that returns are necessary.
The carrier will not honor any damage claims unless all original shipping
material is saved for inspection.
1
2
3
Figure 1. Accessories Packaged with MDS8PT Unit.
Table 4. Packing Contents.
Item
1
2
3
Name
Unit
Cord
Guide
Description
MDS8PT Universal Benchtop Digital Meter
AC Power Cord (Refer to Table 5 on page 4)
MQS5576 (Quick Start Guide)
3
2.2
Power Cords
Electrical power is delivered to the Benchtop Meter by an AC power cord to plug into the
IEC 60320 C-13 power socket located on the rear panel of the unit. Refer to Section 3.2
Figure 7 for detailed connections.
The input power is fused. Relay terminals must be limited to 30
VRMS and are fused on the common terminals.
The Benchtop Meter operates from 90 to 240 VAC, 50-60 Hz, 4W. A main power cord is
included at no charge with the order. Table 5 below, lists optional power cords.
Table 5. Optional Power Cords.
PWR Cord Type
United Kingdom, Ireland
Denmark
USA, Canada, Mexico
Italy
Continental Europe
Europe
Part Number
Power Cord-UK
Power Cord-DM
Power Cord-Molded
Power Cord-IT
Power Cord E-10A
Power Cord E-16A
4
PWR Rating
240V
230V, 16A
120V
230V, 16A
240V, 10A
240V, 16A
SECTION 3 HARDWARE SETUP
The hardware connections and configuration to operate the Universal Benchtop Digital Meter.
3.1
MDS8PT Front Panel
The controls, indicators and input connections of the Benchtop Meter
are shown in Figure 2.
1
INPUTS
BENCHTOP
1
10
9
8
7
6
5
4
3
2
1
10
2
6
CU
CP +
CP -
PLATINUM
5
TM
Series
4
3
Figure 2. MDS8PT Front Panel. (Not to scale)
Table 6. Front Panel Compnents List.
Item
1
2
3
4
5
6
Name
Description
10-Pin Input Connector
Display - Meter/Alarm
Adjustable Feet
Push Buttons
Universal Panel Jack (UPJ)
USB Port
Process RTD and Thermistor Inputs
Four-digit, three-color, LED Display
Adjusts viewing angle.
Menu navigation
Thermocouple Input
USB Port, Type A Female
5
10-Pin Connector
Figure 3 shows the10-pin connector with corresponding input pin assignments.
Sensor selection is firmware-controlled, and no jumper settings are required to
switch between different sensor types.
10
9
8
7
6
5
4
3
2
1
3.1.1
Figure 3. 10-Pin Connector Input Pin Assignments.
Pin No.
Code
Description
1
2
3
4
5
6
7
ARTN
AIN+
AINAPWR
-EXCT
DIN
8
ISO GND
9
10
RX/A
TX/B
Analog return signal (analog ground) for sensors.
Analog positive input
Analog negative input
Analog power (Only used for 4-wire RTDs)
Not Used
Excitation voltage output referenced to ISO GND
Digital input signal (latch reset), positive at > 2.5, Ref. to
ISO GND
Isolated ground for serial communications, excitation,
and digital input
Serial communications receive
Serial communications transmit
Table 7 summarizes the universal input pin assignments for different sensor
inputs. Refer to Section 5 - Configuration and Programming, for details to
program the unit for desired sensor settings.
Table 7. Sensor Inputs Assignments.
Pin
Number
Process
Voltage
1
Rtn
2
Vin +/-
Process
Current
I+
3
2-Wire
RTD
3-Wire
RTD
RTD2-
RTD2+
RTD1+
RTD1+
RTD1+
TH+
RTD2-
TH-
RTD1-
** Requires external connections to Pin-4.
6
Thermistor
**
I-
4
4-Wire
RTD
RTD1-
RTD1-
3.1.2
RTD Wiring Diagram Connector
Figure 4 illustrates the wiring diagram for connecting a platinum RTD.
A two-wire RTD requires an external jumper from Pin 1 to Pin 4.
Figure 4. RTD Wiring Diagram.
3.1.3
Process Current Wiring Diagram
Figure 5 illustrates the wiring diagram for connecting 4-20mA Sensor using
internal or external excitation. Refer to M5460 Section 4 for details on setting up
internal excitation.
Figure 5. 4-20 mA Sensor Wiring Diagram.
7
3.1.4
Universal Thermocouple Connector
The Benchtop Meter accepts both Mini and Standard thermocouple connectors
using the Universal Panel Jack shown in Figure 6. The Benchtop Meter has
internal cold junction compensation and is compatible with thermocouples listed
in Table 7 on page 6.
Figure 6. Mini/Standard Thermocouple.
8
3.2
MDS8PT Rear Panel
The Rear Panel connections for the Benchtop Meter are shown in Figure 7 below.
2
1
3
5
4
ETHERNET
SE
SE
O/I
FU
-
FU
O
F3
SE
FU
F2
F1
ALARM 1
ISO ANALOG
ALARM 2
AC MAIN OUTPUT
90-240 VAC ~ 50 / 60 Hz
9
8
7
6
Figure 7. MDS8PT Rear Panel. (Not to scale)
Table 8. Rear Panel Component locations.
Item
Name
Description
1
2
3
4
5
6
7
ON/OFF Switch
F1 (Fuse)
F2 (Fuse)
F3 (Fuse)
Ethernet Port (RJ45)
Isolated Analog Terminal
ALARM 1 Terminal
Turns the unit on
Protects the AC power input
Protects Alarm 1
Protects Alarm 2
10/100Base-T
Analog Output
Alarm 1 Dual Throw Relay (Dry Contact)
8
9
ALARM 2 Terminal
AC Main Input Plug
Alarm 2 Dual Throw Relay (Dry Contact)
IEC60320 C13, Power Socket.
9
3.2.1
Screw Terminals
Figure 8 shows the wiring confdigurations of the rear terminals connections for Alarms
and optional Isolated Analog terminals.
0-24mA OUTPUT SOURCE
0-10V OUTPUT SOURCE
+ -
1
2
3
ALARMS 1 & 2
1
2
3
ISO ANALOG
Figure 8. Benchtop Meter Wiring Diagram.
Table 9. Configuration for Terminals.
Configuration
3
Alarms 1 and 2*
Normally Open
ISO Analog
Analog Output
* 3A 30V Max Dry Contact
10
Terminal Numbers
2
1
Relay Common
Normally Closed
Not Connected
Analog Return
SECTION 4 CONFIGURATION AND PROGRAMMING
4.1
Controls
The UP Button moves up a level in the menu structure. Pressing and
holding the UP Button navigates to the top level of any menu (oPER,
PRoG, or INIt). This is a useful way of reorienting if you get lost in the
menu structure.
The LEFT Button moves across a set of menu choices at a given level.
When changing numerical settings, press the LEFT Button to make the
next digit (one digit to the left) active.
The RIGHT Button moves across a set of menu choices at a given
level. The RIGHT Button also increments numerical values. When
incrementing a digit past “9” it returns to “0”.
The ENTER Button selects a menu item and goes down a level. It also
enters a numerical value or parameter choice.
Figure 9. MDS8PT LED Display.
11
4.2
Menu Structure
The menu structure of the Platinum Series Display Meter is divided into three
main Level-1 Modes: Initialization (INIt), Programming (PRoG) and Operations
(oPER).
Initialization Mode: These settings are rarely changed after initial set up. They
include transducer types, calibration, etc. These settings can be password
protected.
Programming Mode: These settings are frequently changed. They include set
points, Control Modes, Alarms, etc. These settings can be password protected.
Operating Modes: The setting of this mode allow users to switch between Run
Mode, Standby Mode, and Manual Mode etc.
For a detail discussion of Levels 2 thru 8, refer to the Platinum Series
Temperature and Process Meters- User’s Manual (M5460).
Figure 10 illustrates how to use the LEFT and RIGHT Display Buttons to navigate around
a menu selection.
oPER
Press the ENTER Button on
oPER to select and enter
RUN Mode
Press the UP Button to
navigate back up a level
Press the LEFT and RIGHT
Buttons to navigate around
the Operating Mode option
Cycle through any menu
in both directions
RUN
Stby
SP1
PEAk
SP2
VALy
LRST
Figure 10. Circular Flow of Menus.
12
4.3
Selecting an Input
The Benchtop Meter features a User Programmable Universal Input. Select the input
type using TABLE 10. Initialization Mode Menu, below. Refer to Section 3.1.2 to 3.1.3
for Input Wiring Diagrams.
Level
1
INIT
Level
2
INPt
Level
3
t.C.
Rtd
tHRM
PRoC
Level
4
k
J
t
E
N
R
S
b
C
N.wIR
Level
5
Level
6
Level
7
Notes
Type K thermocouple
Type J thermocouple
Type T thermocouple
Type E thermocouple
Type N thermocouple
Type R thermocouple
Type S thermocouple
Type B thermocouple
Type C thermocouple
3-wire RTD
4-wire RTD
2-wire RTD
385 calibration curve, 100 Ω
385 calibration curve, 500 Ω
385 calibration curve, 1000 Ω
392 calibration curve, 100 Ω
391.6 calibration curve, 100 Ω
2250 Ω thermistor
5000 Ω thermistor
10,000 Ω thermistor
Process input range: 4 to 20 mA
3 wI
4 wI
2 wI
A.CRV 385.1
385.5
385.t
392
3916
2.25k
5k
10k
4–20
Note:
This Manual and Live Scaling submenu is the same for all PRoC ranges.
MANL
LIVE
0–24
+-10
+-1
+-0.1
Rd.1
IN.1
Rd.2
IN.2
Rd.1
IN.1
Rd.2
IN.2
----------------------------------
Low display reading
Manual input for Rd.1
High display reading
Manual input for Rd.2
Low display reading
Live Rd.1 input, ENTER for current
High display reading
Live Rd.2 input, ENTER for current
Process input range: 0 to 24 mA
Process input range: -10 to +10 mA
Process input range: -1 to +1 mA
Process input range: -0.1 to +0.1 mA
Table 10. Selecting Inputs.
13
4.4
Alarm Configuration (PRoG > ALM. #)
The PLATINUM Series Benchtop Meter supports two Alarms. Each Alarm can be
connected to an internal Single Pole Double Throw (SPDT) Mechanical Relay.
The Alarms are programmed using the Program Submenu. Alarm 1 and 2 have identical
default settings and submenu for configuring the Alarm functions. A brief outline of
Alarm settings is below.
Alarm Settings include:
Setting
tyPE
ALR.H
ALR.L
A.CLR
Alarm Function
Alarm type
Alarm High parameter, used for Alarm trigger calculations.
Alarm Low parameter, used for Alarm trigger calculations.
Alarm Color indication.
For a more detailed discussion of setting up and configuring the Alarm
functions, refer to the Platinum Series Temperature and Process Meters User’s Manual (M5460).
4.4.1
Setting Alarm Type
Use the Alarm Type (tyPE) parameter to control the basic behavior of the
selected alarm.
Types
oFF
AboV
bELo
HI.Lo
bANd
Alarm Behavior
Alarm is off (factory default)
Alarm is triggered when the process value exceeds ALR.H.
Alarm is triggered when the process value is less than ALR.L.
Alarm is triggered when the process value is outside the ALR.L–ALR.H.
Alarm is triggered when the process value is within the ALR.L–ALR.H.
Figure 11. Alarm Range Option Diagram.
14
4.4.2
Setting Alarm High/Low References:
•
•
Alarm High Reference (PRoG > ALM.#> ALR.H).
Alarm Low Reference (PRoG > ALM.# > ALR.L).
1. Use the
button to select a digit to change;
2. Then select the
button to increment the digit;
3. Save the setting with the
4.4.3
button.
Setting the Alarm Color (PRoG > ALM.# > A.CLR)
The Benchtop Meter can change color in the display when an alarm is triggered.
The Alarm color options are listed below.
Setting
REd
AMbR
GRN
dEFt
4.4.4
Description
Alarm conditions are displayed in red. (Factory default)
Alarm conditions are displayed in amber.
Alarms conditions are displayed in green.
Alarms do not display color.
Activating a Relay (PRog > dtR# > Mode)
To activate a relay when an alarm is triggered, change the output type of the
relay to the desired alarm. PRoG > DTR.# > Mode.
Setting
oFF
ALM.1
ALM.2
Function
Turn off the output channel. (Factory default)
Set the output to be an Alarm, activating when alarm conditions according to the ALM.1 configuration parameters are active.
Set the output to be an Alarm, activating when alarm conditions according to the ALM.2 configuration parameters are active.
15
4.5
Analog Output
The optional Analog Output can be configured to transmit a Voltage or current signal
proportional to the Input. Select the output type in the PRog. > IAN.1 > RNGE menu.
For a more detailed discussion of setting up and configuring the
Analog Output. Refer to the Platinum Series Temperature and
Process Controllers - User’s Manual (M5451).
4.5.1
Select an Output Type
The scaling of input readings to output voltage or current is fully user
configurable.
4.5.2
Type
Description
0-10
0-5
0-20
4-20
0-24
0 to 10 Volts (factory default)
0 to 5 Volts
0 to 20 mA
4 to 20 mA
0 to 24 mA
Set Mode to Retransmission
Enable the output by setting the mode to Retransmission
(PRog. > IAN.1 > Mode > RtRN) 4.5.3
Set Scaling
The retransmission signal is scaled using the following 4 parameters. The unit
will display the first scaling parameter, Rd1, after RtRN is selected.
Setting Parameters
Rd1
Process reading 1; the process
reading that corresponds to the
output signal oUt1.
oUt1
The output signal that
corresponds to the process value
Rd1.
Rd2
Process reading 2; the process
reading that corresponds to the
output signal oUt2.
oUt2
The output signal that
corresponds to the process value
Rd2.
Figure 12. Alarm Scaling Diagram.
16
SECTION 5 SPECIFICATION
For a detail list of Specifications for the Platinum Meter, refer to the
Temperature and Process Meters - User’s Manual (M5460 - Section 7).
Table 11. Benchtop Meter Specifications Summary.
Model MDS8PT
Sensor Input(s) Channel
Single-Channel, Universal Input
Power All Models:
Fused:
90 to 240 VAC 50/60 Hz, 4W
Time-Lag, 0.1A, 250 V
Alarm Output 1 and 2:
Fused:
SPDT Relay, Class “C” 30 VRMS Max.
Time-Lag, 3A, 250 V
Isolated Analog,
Output Option:
1.5 kV Isolation, programmable for control or retransmission; Voltage Output
0-10 V output. 500 Ohms Min. Accuracy 0.1%; Current Output 0-20 mA output.
500 Ohms Max Accuracy is 0.1% ; Step response time 100 ms.
Enclosure:
Material:
Size:
Case - Plastic (ABS), Handle -Anodized Aluminum
20.95 W x 9.525 H x 20.32 cm D
(8.25 W x 3.75 H x 8” D)
Weight: MDS Platinum Series
1.36 kg (3 lb)
5.1
Approval Information
EMC:
2014/30/EU (EMC Directive)
Electrical Safety: 2014/35/EU (Low Voltage Directive)
Safety requirements for electrical equipment for
measurement, control, and laboratory.
Measurement Category I
Category I includes measurements performed on
circuits not directly connected to the Mains Supply
(power). Maximum Line-to-Neutral working voltage is
50Vac/dc. This unit should not be used in Measurement
Categories II, III, and IV.
Double Insulation; Pollution Degree 2
Dielectric withstand Test per 1 min
• Power to Input/Output:
2300 Vac (3250 Vdc)
• Ethernet to Inputs:
1500 Vac (2120 Vdc)
• Isolated RS232 to Inputs: 500 Vac (720 Vdc)
• Isolated Analog to Inputs: 500 Vac (720 Vdc)
Transients Overvoltage Surge (1.2 / 50uS pulse)
• Input Power:
2500 V
• Input Power:
1500 V
• Ethernet:
1500 V
• Input/Output Signals: 500 V
ADDITIONAL INFORMATION:
FCC: This device complies with Part 15, Subpart B, Class B of the FCC rules, for option –EIP only.
RoHS II: The above product has been declared by the original supplier as Compliant. The manufacturer of this item
declares that the product complies with the EEE RoHS II Directive 2011/65/EC.
UL File Number: E209855
1
I/O signal and control lines require shielded cables, and these cables must be located on conductive cable trays or in conduits.
The length of these cables should not exceed 30 meters.
17
SECTION 6 MAINTENANCE
These are the maintenance procedures required to keep the Benchtop Meter in optimal
performance.
6.1
Calibration
This unit is calibrated to give optimum performance over its full operating range.
Additional user calibration is available with adjustable gain and offset as well as ice
paint calibration. Refer to Temperature and Process Meters - User’s Manual (M5460) for
additional information on user calibration to adjust the meter to a specific application.
6.2
Cleaning
Lightly dampen a soft clean cloth with a mild cleaning solution and gently clean the
Benchtop Meter.
Remove all electrical connections and power before attempting any cleaning.
Do not insert any foreign objects into the Benchtop Meter.
6.3
Fuse Replacement
The Benchtop Meter contains three (3) fuses to protect operation. Fuse F1 is used to
provide AC Power protection. Fuse F2 is used to protect the Alarm 1 Relay. Fuse F3 is
used to protect Alarm 2 relay. Refer to Table 11 below for Fuse ratings.
Disconnect all power from source before attempting fuse replacement.
For continued protection against risk of fire, replace fuses with only the same
size, type and rating with safety approvals indicated here and on the rear
panel of the Benchtop Meter.
Table 12. Fuses
Fuse*
Rear Panel Fuse (F1)
Rear Panel Fuse (F2, F3)
Type
0.1A 250V, 5x20mm, Slow Blow
3.0A 250V, 5x20mm, Slow Blow
*For all Models: UL./CSA/VDE Approved.
18
2016
MQS5576/0916
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