Page 1
ST-2A
Page 2
Page 3
1.0 Introduction
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1.1 Base Unit Overview
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4
1.2 Quick Select Module Overview
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1.2.1 The GQS-1 Quick Select Pressure Module
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5
1.2.2 The GQS-2 Quick Select Pressure Module
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1.2.3 The GQS-RT Quick Select RTD Temperature Interface Module
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1.2.4 The GQS-TC Quick Select Thermocouple Module
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2.1 Un pack ing Product Upon Receipt
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2.2 Prod uct Storage
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2.3 Product Cleaning
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3.1 Pow er Cord Connection
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3.2 Bat tery Installation
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3.3 In stal la tion of Quick Select Modules
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7
3.4 Start ing Up MDI Indicator System
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8
3.5 Op tion al System Start Up Procedures
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3.5.1 Auto Off- Battery Save Function
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9
3.5.2 Bat tery Life Overview
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9
3.5.3 Low Battery Icon
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9
3.5.4 Pro gram ming Date and Time Information
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10
3.5.5 In put of Owner/Operator Information
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10
3.6 Re mov ing Quick Select Modules
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12
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5.0 Port Select Function
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6.1 Ze ro ing One of Two Installed Quick Select Pressure Module
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8.1 Se lect ing a Factory Programmed Engineering Unit
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15
8.2 Set ting Up a Custom (User Defi ned) Engineering Unit
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15
8.3 Us ing a Custom (User Defi ned) En gi neer ing Unit
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16
8.4 Dis play of Two Different En gi neer ing Units,
for Two Installed Modules
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8.5 Tem per a ture Selection for H
18
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10.1 Us ing the Hold Function
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Page 4
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12.1 Set Up of Damping Function
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12.2 Ac ti vat ing or Discontinuing Damping
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20
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13.1 Set Up of Percent Function
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13.2 Use of Percent Function
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14.0 Flow Velocity and Flow Volume Measurement Background
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14.1 Set Up for Flow Velocity & Volume Measurement
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14.2 Flow Velocity Measurement
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14.3 En gi neer ing Unit Selection for Flow Velocity
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14.4 Flow Volume Measurement
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24
14.5 En gi neer ing Unit Selection for Flow Volume
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25
14.6 Si mul ta neous Display of Two Flow Measurements in
In de pen dent En gi neer ing Units
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25
14.7 Simultaneous Display of Flow (Velocity or Volume)
with a Pressure Measurement
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26
14.8 Simultaneous Display of Flow (Velocity or Volume)
with a Temperature Measurement
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27
14.9 Simultaneous Display of Flow Volume and Flow Velocity
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27
14.10 Simultaneous Display of Flow (Velocity or Volume) and An
Elec tri cal Output Measurement
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28
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15.1 Leak Rate Function Set Up
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29
15.2 Pres sure Decay Function Set Up
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29
15.3 Mod ule Selection for Per form ing Leak Rate or Pressure
De cay Tests
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30
15.4 Performing Leak Rate or Pressure Decay Tests
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30
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16.1 Set ting Up the Calibrator for Temperature Measurement
with an RTD Probe
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31
16.2 Cal i brat ing and Programming of the RTD Interface and Probe
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33
17.0 Tem per a ture Measurement Using Thermocouple
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17.1 Set ting Up Calibrator for Temperature Measurement
with a thermocouple
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33
18.0 Pres sure and Temperature Switch Testing
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18.1 Set ting Up for Pressure and Temperature Switch Testing
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35
18.2 Trip Point Testing
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35
18.3 Deadband Testing
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36
19.0 RS232 Interface
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19.1 Con fi g ur ing RS232 Interface for Use With Dumb Terminal
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37
19.2 RS232 Confi guration Options
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37
19.2.1 RS232- ISO1745 Mode Func tion al Overview
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37
19.2.2 RS232- Journal Mode Func tion al Overview
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38
19.2.3 RS232- Interface Inquiry Mode Func tion al Overview
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38
19.2.4 RS232-Interface Remote Mode Operation
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38
Page 5
19.0 RS232 Interface (Continued)
19.3 RS232 Set Up for Journal Mode Operation
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38
19.4 RS232 Set Up for Inquiry Mode Operation
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40
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20.1 Re view ing Instrument Status
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20.2 Bat tery Check Function
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21.1 Ac cu ra cy of Dual Module Measurements
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21.2 Set ting Up Dual Module Differential Pressure Measurement
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43
21.3 Set ting Up a Dual Module Summation Pressure Measurement
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Se quen tial Data Logging
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45
22.2 Set ting Up the Data Logging Function
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45
22.3 Data Labeling Function
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46
22.4 Au to mat ic Data Logging
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46
22.5 Manual Data Logging
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47
22.6 Review of Stored Data on display
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48
22.7 Erasing of Selected Stored Data
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49
22.8 Erasing All Stored Data
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50
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23.1 Set Up and Use of Certifi cation Generation Data Logging
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50
24.0 Con nec tion of MDI to Computer for Upload of Stored Calibration Data
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56
24.2 Replacement of Data Logging Memory Back-up Battery
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56
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25.1 Event Timer Set Up
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57
25.2 Data Logging Set Up for Event Timer Operation
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58
26.0 Alarm Function Overview
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26.1 Alarm Set Up and Operation
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59
27.0 Re cer ti fi ca tion of the MDI Indicator
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27.1 Access Codes
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60
27.2 Calibration/Recertifi cation Overview
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61
27.3 Required Equipment
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61
27.4 As Received Readings-Base Unit Electronics
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61
27.5 Adjustment and Calibration Base Unit Electronics
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62
27.6 Quick Select Pressure Module Recertifi cation
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65
Appendix A – Pressure Conversion Factors
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Appendix B – ASCII Character Set
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Appendix C – Product Specifi cations
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Appendix D – Serial Communications – Remote Mode
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Appendix E – RTD Probe Connector
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Appendix F – Certifi cation of the TC1 Thermocouple Interface Module
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Page 6
Section 1.0 Introduction
di tion, Quick Select modules are available that allow the
Section 3 and its various subsections include all the in-
formation needed to begin using the MDI system for ba-
functions are detailed in later sections of this manual. It
for higher level and ap pli ca tion specifi c measurement
age to the instrument, accessories, prod ucts under test or
li volts
.
sure ment system will provide mea sure ment accuracy in
Section 1.1 Base Unit Overview
Section 1.2 Quick Select ModulesOver view
Page 7
Section 1.2.1 The GQS-1 Quick Select
cial ized low pressure measurement capabilities. GQS-1
er ates a linear signal ramp and applies this signal to the
por tion to the level of pressure applied. The output from
Pressure Module
Section 1.2.2 The GQS-2 Quick Select
Pressure Module
Section 1.2.3 The GQS-RT Quick Select RTD
Interface Module
Page 8
Section 1.2.4 The GQS-TC1 Quick Select
per a ture in the product specifi cation. The storage tempera-
ture limits results in sig nifi cant risk of product damage. It
Plug adapter into the receptacle in the center of
Plug the side with the adapter mounted in the
To operate the unit simply press the ON/OFF
ra tions for por ta ble operation. These options are:
1 – Rechargeable nickel cadmium power pack.
2 – Battery holder that sup ports the use of fi ve AA al-
ka line, zinc and non-rechargeable batteries.
Time in Hours
AA NiCad
Alkaline Pack
Thermocouple Interface Module
Section 2.0 Un pack ing & General Care
Section 2.1 Unpacking Product Upon Receipt
Section 2.2 Product Storage
Section 3.1 Power Cord Connection
Section 3.2 Battery Installation (Op tion al)
Section 2.3 Product Cleaning
Section 3.0 System Start-Up General In struc tions
Page 9
To gain access to the battery compartment, turn
Open the battery compartment by turning the
With the screw no longer engaged to the main
For MDI units de signed
Note polarity information for battery in stal -
Locate the fi ve AA replacement batteries to be
Reinstall the fi ve (5) battery retaining clips
Replace battery compartment cover by sliding
Rechargeable Nickel Cadmium Power Pack
cal ly charge the battery pack
the MDI system
only be used with nickel
Grasp the connector across the narrow sides and
Do not throw away the spent battery
Connect the replacement battery pack and place
Replace battery compartment cover by sliding
Section 3.3 In stal la tion of Quick Select
Make certain the power is off on the base unit.
Hold the base unit, in one hand, with the back
Holding the Quick Select module to be in stalled
Slide the Quick Select module into the module
Installation of the Quick Select module is now
Module in Vacant Module Bay
Page 10
Section 3.4 Starting-Up the MDI System
ON
OFF
• identify the type of module in each bay
• identify the range of each installed
• module
• indicate that the installed module (pressure
xx EngUnit xx EngUnit
vi ous ly used tem per a ture mea sure ment unit, such as
Eng Unit Eng Unit
(primary en gi neer ing unit)
+xx.xxx +xx.xxx
(measured value with sign)
formed to increase the overall capabilities of the MDI
ing the MDI system on and depleting bat ter ies in
Section 3.5 Optional System Start Up
Procedures
Page 11
Section 3.5.1 Auto Off – Battery Save Function
With the MDI system on and reading pres sure
SET
UP
Using the arrow keys select the battery save
UserEng H2Oref
With the “BatSave” text fl ashing press the
Using the left or right pointer select Disable or
Auto shut off
Disable Enable
With the word “Enable” fl ashing press enter to
Time in Hours
AA NiCad
Alkaline Pack
4.5 3.25
24 10
Due to the extreme variation in battery
(BatSave)
Section 3.5.2 Battery Life of Optional Battery
Power Feature
Section 3.5.3 Low Battery Icon
Page 12
5.4 Vdc: Low battery icon remains on display,
unit powers down after 15 seconds.
5.2 Vdc: Pow er up not allowed
Section 3.5.4 Programming Date & Time
MDI units without the data logging option have
With the MDI system on and displaying mea-
sure ment data press the SET UP key.
SET
UP
Using arrow keys move through the menu
Owner¦¦ Alarm
With the words “DateTime” fl ashing press the
ENT
XXXXXXXXXXXX
(01 for Jan. through 12 for Dec.)
YYMMDDHHMMSS
day (03), 1996 (96) at
tained in MDI units without data log option.
With the MDI system on and reading pres sure
SET
UP
Information
Section 3.5.5 Input of Owner/Operator In for ma tion
Page 13
Using the arrow keys, select the Owner func-
Owner Alarm
With the word “Owner” fl ashing press the enter
After pressing ENT the display will read:
Access code?
.000000
A fi ve digit owner access code was provided
Access code?
words are not interchangeable.
With the proper access code displayed press the
ENT
After entry of the proper access code the dis-
xxxxxxxxxxxxxxx
0, 1, 2, 3, 4, 5,
6, 7, 8, 9, _, A,
B, C, D, E, F, G,
H, I, J, K, L, M,
N, O, P, Q, R, S,
T, U, V, W, X, Y, Z
After the desired operator information has been
Enter owner name
After the desired owner/user information has
ENT
JOHN Q OPERATOR
To store the owner/user information dis played
Page 14
Section 3.6 Removing Quick Select Pressure or
Using the on/off key on the keypad of the base
ON
OFF
With one hand, hold base unit with the back
Press the black tab on the side of the MDI case
Maintain pressure on the black retaining tab
Pro vides ability to zero, either one or both,
pressing and holding down the
u al or (OPTIONAL)automated data logging.
tri cal mea sure ments. (See Section 10.0 for
Moves cursor up.
Provides access to pressure
fi rmware. (See Section 18.0 for details.)
Activates back light function.
Moves cursor to the left.
Temperature Modules
Section 4.0 Key Function Overview
Page 15
Moves cursor to the right.
Clears previous entry.
Changes electronic measurement display
Moves cursor down.
Enters input data.
Section 5.0 Port Select Function
psi psi
+123456 +1.234
+1.234 +123456
+123456 +123456
o
o
+72.35 +1.234
+1.234 +123456
o
per a ture measurement. The tare capability will function
Section 6.0 Zero Function
Page 16
ture mea sure ment data. See Section 9.0 for information
It is recommended that the instrument be
zeroed prior to use or calibration.
Section 6.1 Zeroing One of Two Installed Quick
Press the port select the number of times re-
to re-zero.
PORT
SEL
psi mA
With the pressure display deactivated for the
ZERO
psi mA
To resume the display of pressure mea sure -
+00000 +12345
pres/temp pres/temp
pres/temp electrical mea sure ment
electrical measurement pres/temp
re sponds with the measured value of the Quick Select
With the MDI system on and reading pres sure/
With the pressure measurement, for the de-
psi mA
+123456
psi volts
+123456 +1.234
psi mA
Select Pressure Modules
Section 7.0 Displaying Current and Voltage
Measurements
Section 8.0 Engineering Unit Selection –
Pressure Measurement
Page 17
Section 8.1 Selecting a Factory Pro grammed
With the MDI system on and displaying pres-
ENG
UNIT
psi inHg inWC ftSW
user
Section 8.2 for details)
Using the left/right and up/down arrow keys
psi inHg,inWCftSW
Bar mBar kPa mPa
With the desired engineering unit fl ashing press
sure ment that is linearly proportional to pressure change
With the MDI system on and reading pres sure
SET
UP
Us ing the arrow keys select the User en gi -
BatSave PerCent
After pressing the enter key the MDI system
Conv from psi
Enter the conversion factor required to convert
Engineering Unit
Section 8.2 Setting up a Custom or User
Defi ned Engineering Unit
Page 18
Conv from psi
When the correct numerical value appears on
Enter unit’s name
_ _ _ _ _ _
Enter the name of the engineering unit se lect ed,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, _, A, B,
C, D, E, F, G, H, I, J, K, L, M, N,
O, P, Q, R, S, T, U, V, W, X, Y, Z
For this example, after the engineering unit
mSW
With the desired engineering unit label dis-
played press the enter key.
Section 8.3 Using A Custom Engineering Unit
With the MDI system on and measuring pres-
sure press the engineering unit key. Designated ENG
ENG
UNIT
psi inHg,inWCftSW
user
Using the left/right and up/down arrow keys
mmHgcmWCmmWCkgcm
With the word “user” fl ashing press the enter key.
u_mSW u_mSW
xxxxxx xxxxxx
Page 19
sured values from two Quick Select pressure modules in
Section 8.4 Display of Two Engineering Units
ce dure should be followed.
With the MDI system on and displaying pres-
ENG
UNIT
psi inHg,inWCftSW
Bar mBar kPa mPa
Press the enter key to select psi.
ENT
sure measurement mode and will display the mea sure -
psi psi
Next, press the port select to deactivate the
re spond ing side of the display contains milliamp (mA)
PORT
SEL
psi mA
With the right side deactivated from pres sure
ENG
UNIT
psi inHg,inWCftSW
Bar mBar kPa mPa
psi inHg,inWCftSW
Bar mBar kPa mPa
With the desired engineering unit selected
+12345 +1234
Reactivate the right side of the display for pres-
PORT
SEL
Page 20
+1234 +123456
PORT
SEL
Bar psi
Section 8.5 Temperature Selection for H2O
grammed engineering units. This selection includes the
sure ment devices in terms of the height of a column of
stru ments, the MDI system includes 3 conversion factors
With the MDI system on and reading pres sure
SET
UP
Using the up/down and left/right arrow keys
BatSave PerCent
UserEng H2Oref
With the text “H2Oref” fl ashing press the
H2O ref temp
Using the left/right arrow keys select the de-
20C 60F 4C
With the desired temperature for the con ver sion
With the MDI system on and displaying pres-
TARE
Left tare value
Conversion Factor
Section 9.0 Tare Function
Page 21
Use the number keys to input a tare value other
Failure to enter the zero (0) will result in the
MDI system automatically accepting the last dis played
Left tare value
With the desired value displayed press the
Right tare value
+xxxxx
Use the number keys to input a tare value other
Failure to enter the zero (0) will result in the
MDI system automatically accepting the last dis played
+12345
With the desired value displayed press the
con tin ued and the display will stop fl ash ing.
+1.2345 inH
Left Min: +0.00000 Max: +1.2345
Right Min: +0.0000 Max: +1.2345
With Hold Function Invoked
+1.2345 H inH
Left Min: +xxxxx.x Max: +xxxxx.x
Right Min: +xxxxx.x Max: +xxxxx.x
Section 10.1 Using the Hold Function
To invoke the hold function press the hold key.
HOLD
To exit the hold function press any key.
To recall the minimum and maximum values
MAX
+12345 +12345
i mum values for both modules simultaneously.
To clear the stored minimum and maximum
Section 11.0 Minimum and Maximum Value
Tracking
Section 10.0 Hold Function
Page 22
CE
Pressing any key other than the CE key will main tain the
Section 12.0 Damping
ing is most commonly used with Quick Select pressure
With the MDI system on and reading pres sure
SET
UP
Using the arrow keys move through the set up
EvntTimr Dampen
With the word Dampen fl ashing press the
X
er aged by one (1). By moving the highlighted fi eld to the
With the desired level of damping shown press
Once established in the set up menu the damp-
Section 12.1 Set Up of the Damping Function
Section 12.2 Activating or Discontinuing the
Damping Function
Page 23
DAMP
damping function
Using the left or right arrow select “Disable” to
Damping must be re-initiated via the keyboard
Section 13.0 Percent Function
Pressure Nor mal
Ap plied Dis play Mode
25 psi 8 mA
50 psi 12 mA
75 psi 16 mA
100 psi 20 mA
% scale % error
+50 -0.05
With the MDI system on and reading pres sure
SET
UP
Using the arrow keys select the text “PerCent”
BatSave PerCent
With the text “PerCent” fl ashing press the
Enter Input Zero
.000000
Enter Input Zero
ENT
Section 13.1 Set Up of the Percent Function
Page 24
Enter Input FS
Using the number keys enter the full scale
Enter Input FS
100
With the desired input full scale displayed press
0.0000
With the desired output “zero” keyed in and
0.0000
Using the number keys enter the full scale out-
Enter output FS
With the desired full scale output displayed
ENT
Device type
is a current to pressure device
is a pressure or temperature to current device
is a pressure to pressure device
is a pressure or temperature to voltage device
duc er that produces a 0-10 Vdc output from zero to
Device type
With the desired device type fl ashing press the
ENT
Section 13.2 Use of the Percent Function
%
Connect the output lines from the device under
Make the necessary plumbing connections to
Per form testing in accordance with the number
To exit the percent mode press the percent key.
%
Section 14.0 Flow Velocity and Flow Volume
Measurement Back ground
Page 25
– Calculation and input of the actual air density for the
dpw
V = 1097 x K
dpw = differential pressure in inches of water
Adw = the air density
ploy ing the following equation:
A
= 0.07649 x ( Pa/14.73) x [520/(T+460)]
– Purchase of a characterized and certifi ed pitot tube
– Purchase of the highest accuracy dif fer en tial pres-
A GQS-1 differential type (dual process con nec tion)
Basic keypad functions such as damping, tare, min/max
play hold, data logging, zero and port select are avail-
Section 14.2 Flow Velocity Measurement
With the MDI system on and displaying pres-
FLOW
Flow
With the word Velocity fl ashing press the
ENT
Enter Air Density
Using the number keys input the required air den-
With the required air density value displayed
EnterFlowCoef(K)
x.xxx
Connect the pitot tube or annubar to the Quick
)
Section 14.1 Set Up for Flow Velocity and Flow
Volume Mea sure ment
Page 26
Section 14.3 Engineering Units for Flow Ve loc i ty
With the MDI system operating in the fl ow
ENG
UNIT
ft/min ft/sec
ft/min ft/sec
MPH MeterSec
With the desired unit of measure fl ashing, press
With the MDI system on and displaying pres-
FLOW
Flow
Using the left/right arrow keys select the word
Flow
With the word Volume fl ashing press the
Enter Duct Area
Calculate the area of the duct for which fl ow
area (square inches) = W x H
W = width of the duct in inches
H = height of the duct in inches
area (square inches) = (
/4 )D
D = di am e ter of the duct in inches
Using the number keys input the area value
sq.in. 123456
With the appropriate area value displayed press
ENT
Section 14.4 Flow Volume Measurement
Page 27
MPH MeterSec
ft3/min ft3/sec
Using the arrow keys select either of the two
MPH MeterSec
With one of the two engineering units to be
+12345 +12345
Next, press the port select to deactivate the
PORT
SEL
ft/min mA
With the right side deactivated from fl ow mea-
Section 14.5 Engineering Units for Flow Volume
As with standard pressure measurement the MDI system
With the MDI system operating in the fl ow
ENG UNIT
m3/min m3/Sec
Using the arrow keys select the de sired unit of
ft3/min ft3/sec
With the desired unit of measure fl ashing, press
ENT
With the MDI system on and displaying fl ow
ENG
UNIT
Section 14.6 Simultaneous Display of Two Flow
Measurements in Independent
Engineering Units
Page 28
ENG
UNIT
ft/min ft/sec
} MPH MeterSec
Using the arrow keys select the desired en gi -
MPH MeterSec
+12345 +1234
Reactivate the right side of the display for fl ow
PORT
SEL
+1234 +123456
PORT
SEL
+1234 +123456
Measurement Press the Clear Entry Key (CE).
Section 14.7 Simultaneous Display of
With the MDI system on and displaying pres-
sure measurement data from both modules, if nec es sary,
The MDI system must be set up for
Use the port select key to deselect the dis played
PORT
SEL
As outlined in Section 14.2 for fl ow velocity or
With the display for the active fl ow mea sure -
Measurement Data for Flow
(Volume or Velocity) and Pres sure
Page 29
PORT
SEL
The units used to express fl ow measurement
Measurement Press the Clear Entry Key (CE).
Section 14.8 Simultaneous Display of
sure module and a temperature measurement from a
With the MDI system turned off install the
Turn the MDI system on.
As outlined in Section 16.1 set up the tem per a-
ture measurement function via the RTmodule submenu
With the side of the display to be used for fl ow
FLOW
The units used to express fl ow measurement
Measurement Press the Clear Entry Key (CE).
played in terms of fl ow volume and the other pressure
/min
Set the MDI system up to display fl ow ve loc i ty
ft/min ft/min
Using the port select key, deactivate the side
PORT
SEL
ft/min mA
+12345 +1234
Measurement Data for Flow
(Volume or Velocity) and Tem per a ture
Section 14.9 Simultaneous Display of Flow
Volume and Flow Ve loc i ty
Page 30
ties. The second press of the port select key will result in
m/A ft/min
m/A ft/min
With the desired side of the display de ac ti vat ed
FLOW
Flow Velocity
Using the left/right arrow keys select the
Flow Velocity
With the word volume fl ashing press the
m/A ft3/min*
Press the port select key to reactivate the left
PORT
SEL
+12345 +12345
Measurement Press the Clear Entry Key (CE)
Section 14.10 Simultaneous Display of Flow
Set the MDI system up to function in the
Select the desired engineering units as outlined
Press the port select key.
PORT
SEL
With the fl ow and electrical measurements
sure ment by pressing the mA/V key.
mA
(Volume or Velocity) and an
Electrical Output Measurement
Page 31
Connect the Quick Select Sensor module to be
Connect the output of the device to the standard
jacks.
jacks.
Section 15.0 Leak Detection Function
With the MDI system on and displaying pres sure
SET
UP
Using the arrow keys, locate and select the
LeakRate Status
With the words LeakRate fl ashing press the
Rate Decay
Using the left/right arrow select the word Rate.
Leak Mode
With the word Rate fl ashing press the enter key.
ENT
Vessel Volume
Using the number keys enter the volume of the
Vessel Volume
cu.in. 12324
With the MDI system displaying the re quired
The MDI system will respond by displaying:
sec. xxxxx
Using the number keys enter the time in ter val,
formed. The time interval may be from 0.1 to 65,000
Time to Monitor
With the desired test interval displayed press
ENT
sure measurement. See Sections 15.3 and 15.4 for infor-
With the MDI system on and displaying pres-
SET
UP
Using the arrow keys, locate and select the
EvntTimr Dampen
With the words LeakRate fl ashing press the
ENT
Section 15.1 Leak Rate Function Setup
Section 15.2 Pressure Decay Test Set up
Page 32
Leak Mode
Using the left/right arrow select the word Decay.
Leak Mode
Rate Decay
With the word Decay fl ashing press the enter key.
ENT
The MDI system will respond by displaying:
sec. xxxxx
Using the number keys enter the time in ter val,
Time to Monitor
With the desired test interval displayed press
sure measurement. See Sections 15.3 and 15.4 for infor-
Section 15.4 Performing Leak Rate or Pressure
With the MDI on and reading pressure con nect
– Select the desired engineering
– Leak rate measurements are made in
Pressurize the vessel to the required level for
Press the key designated LEAK on the keypad
sec xxxxx
module.
pressure module.
at the end of the test the
Eng Unit Decay
selected pressure module.
pressure decay test.
at the end of the test the MDI
cccc xxxx
Decay Tests
Section 15.3 Module Selection; Leak Rate or
Pressure Decay Tests
Page 33
measurement value.
selected pressure module.
Pressing any function key will activate that selection.
program.
Section 16.0 Temperature Measurement Using
–200 to 550°C:
550 to 850°C:
80 to 260°C:
70 to 150°C:
+0.01% reading +0.02 ohms
184 to 275°C:
+0.01% reading +0.2 ohms
With the instrument off install the ap pro pri ate
Connect the desired RTD probe to the Switch-
Turn the MDI system on by pressing the On/
ON
OFF
To access the temperature setup menu press the
SET
UP
Use the downward pointing arrow to access the
Calib RTmodule
feature. This text will not ap-
As required, using the left/right and up/down
dp Meas TCmodule
With the text “RTmodule” fl ashing press the
RTD probes
Section 16.1 Setting Up the MDI System for
Temperature Measurement
Page 34
2W 3W 4W
Using the left/right arrow keys select the ap pro -
Probe Connection
With the desired wiring confi guration selected
able units of measure as follows:
Engnring units:
Using the left/right arrow keys select the
Engnring units:
With the desired engineering unit selected and
low ing:
Probe: 12345678
grammed curves. The GQS-RT1 is pre-preprogrammed
α38
2 α392
–200/850
3
Ni Minco (Ni 120
4 Cu 10 ohm
5-8 available for pro gram ming using the optional
/
inch disk or 838X014-02 for 5
/
inch disks.
Position Probe
1 PT 1000
2-8 available for programming using the
Using the left/right arrow keys select the RTD
Probe: 12345678
a385 –200/850
Pta385 R0=100
With the desired probe type selected and fl ash-
Page 35
0.001% of 400 ohms
= 0.00001 x 400 = 0.004 ohms
Pt 100 (385 & 392) 0.01 degrees C or F
Ni 120 0.1 degrees C or F
Cu 10 0.1 degrees C or F
Pt 1000 1.0 degrees C or F
Select the desired resolution using the left/right
Resolution:
With the desired resolution selected and fl ash-
Section 17.0 Thermocouple Interface Mod ule
the following 8 thermocouple types:
Type Materials
J Iron & Copper-Nickel (Constantan)
K Nickel-Chromium & Nickel-Alu mi num
T Copper & Copper-Nickel (Constantan)
E Nickel-Chromium & Copper-Nickel
(Constantan)
R Platinum-13% Rhodium & Platinum
S Platinum-10% Rhodium & Platinum
B Platinum-30% Rhodium & Platinum – 6%
Rhodium
N Nickel-Chromium-Silicon & Nickel-Silicon
Magnesium
To begin measurement with a thermocouple, fi rst
Turn the calibrator off. Install the ther mo cou ple
ia ture connector into the slots in the receptacle located
Turn the base unit on.
UP
Section 16.2 Calibrating/Programming the RT
GQS-RTD Interface Mod ule
Section 17.1 Thermocouple Measurement Set Up
Page 36
If two thermocouple interface modules have been in-
LEFT RIGHT
junction cannot be applied in this mode).
prise the thermocouple type which is currently fl ashing.
measurement).
TC: JKTERSBN
1 .1 .01 auto
er ence junction.
Ref junction:
junction that is resident inside the interface module.
sure ment.
Page 37
Section 18.0 Pressure and Temperature Switch
per a ture switches. On board fi rmware provides the abil-
With the MDI system on and reading pres sure
PORT
SEL
Press the mA/V key as required to change the
V
Connect the switch electronics with a current
The MDI is available with several ac ces so ries/
– The MDI system is available with an optional 24
– Loop Power Supply, Model LPS-IIa- A portable
– Voltage Converter, Model SM-1- A modular voltage
Connect the output signal of the switch to the
Connect the switch to a controlled pressure/
Proceed to Section 17.2 for trip detect testing or
TRIP
DET
Disable Manual
Using the left/right and up/down arrow keys
Deadband
Testing
Section 18.1 Setting Up the MDI System for
Testing of Pressure and
Temperature Switches
Section 18.2 Test of Switch Trip Point
Page 38
With the word “manual” fl ashing press the
Gradually increase the pressure, vacuum or
+12345 +vvvvv
• Eng Unit is the pressure or temperature engi-
• Tripped indicates the pres sure or temperature
• +12345 represents the pressure or temperature
• +vvvvv voltage value
To discontinue the switch testing process press
TRIP
Deadband
Using the left/right and up/down arrow keys
Deadband
With the word “disable” fl ashing press the
Section 18.3 Switch Deadband Test Pro ce dure
With the MDI system on and reading pres sure
TRIP
DET
Disable Manual
Using the left/right and up/down arrow keys
Disable Manual
With the word “Deadband” fl ashing press the
ENT
Gradually increase or decrease, as required,
+12345 +vvvvv
• Eng Unit is the pressure or tem per a ture en gi -
• Tripped indicates the pressure or tem per a ture
• +12345 pressure at which the switch tripped
• +vvvvvvoltage value
To perform a deadband test, maintain the
DET
Gradually allow the pressure/vacuum or
When the MDI system detects a reset on the
Deadband +xxxxxxx
xxxxxx is the measured trip point
zzzzzz is the measured reset point
yyyyyy is the measured deadband value
To perform additional deadband tests press any
To discontinue switch testing press the trip
Page 39
DET
Disable Manual
Using the left/right and up/down arrow keys
Disable Manual
With the word “Disable” fl ashing press the enter
ENT
Section 19.0 RS232 Interface General
Pin Function
1 Relay 1 common (for alarm option)
2 Transmit data
3 Read data
4 Data set ready
5 Ground
6 Data transfer ready
7 Relay 1 normally open (for alarm option)
8 Re lay 2 common (for alarm option)
9 Relay 2 normally open (for alarm option)
Set data bits to: 8
Set stop bits to: 2
Set parity to: None
Flow control: None
optional
plied with the upload program disks or manual.
In for ma tion
Section 19.1 Confi guring RS232 Interface for
Use with a Dumb Terminal
Section 19.2 RS232 Confi guration Options
Section 19.2.1 RS232 Interface ISO1745
Operating Mode Over view
Page 40
Section 19.2.2 RS232 Interface – Journal Mode
+0.005 inH2O+0.0000 psi
Left Min: +0.0045 Max: +0.0053
Right Min: +0.0000 Max: +0.0000
+0.003 inH2O+0.0000 psi
Left Min: +0.0032 Max: +0.0049
Right Min: +0.0000 Max: +0.0000
+0.003 inH2O+0.0000 psi
Left Min: +0.0033 Max: +0.0035
Right Min: +0.0000 Max: +0.0000
+0.003 Eng Unit +0.0000 Eng Unit
played on the left side of the display and includes the
With the MDI system on and reading pres sure
SET
UP
Using the arrow keys move through the menu
Owner Alarm
With the text RS232 fl ashing press the enter key.
RS232 interface
RS232 interface
Disable Enable
With the word Enable fl ashing press the
After selecting “Enable” the MDI system will
Baud Rate
Overview
Section 19.2.4 RS232 Interface – Re mote Mode
Overview
Section 19.3 Setup of the RS232 Interface in the
Journal Mode
Section 19.2.3 RS232 Interface – Inquiry Mode
Overview
Page 41
CrLf Prog
To use CrLf as the end of message character use
End of message
With the text CrLf fl ashing press the enter key.
qui si tion device, computer or recorder as pro grammed.
Invoking set up functions or ded i -
To select a programmable end of message char-
End of message
CrLf Prog
With the text Prog fl ashing press the enter key
ENT
xx.xx
Using the number keys enter the decimal code
With the decimal representation of the desired
ENT
sure measurement and will transmit data to the termi-
grammed. While communicating, engineering units may
Using the left/right arrow keys select the de-
Baud Rate
With the desired baud rate fl ashing press the
ENT
Journal Inquiry
Using the arrow keys select the word Jour nal.
Journal Inquiry
With the word Journal fl ashing press the
Report Interval
Using the number keys enter the desired inter-
600
With the desired time interval displayed press
ENT
Page 42
Invoking set up functions or ded i -
Section 19.4 Setup of the RS232 Interface in the
With the MDI system on and reading pres sure
SET
UP
Using the up/down and left/right arrow keys
Owner Alarm
With the text “RS232” fl ashing press the
RS232 interface
Use the arrow keys to select the word Enable.
RS232 interface
With the word Enable fl ashing press the enter key.
After entering the Enable option the MDI sys-
960024001200 300
Using the left/right arrow keys select the de-
960024001200 300
With the desired baud rate selected and fl ashing
After the desired baud rate has been entered the
Disable ISO1745
Using the arrow keys select the word “Inquiry”,
Disable ISO1745
With the word Inquiry fl ashing press the
ENT
Inquiry Char.
Using the number keys enter the desired end of
able ASCII characters and their corresponding decimal
With the decimal representation for the desired
CrLf Prog
Inquiry Mode
Page 43
Select the desired end of message char ac ter.
With the desired decimal representation for
ENT
Invoking set up functions or ded i -
Section 20.0 Status
With the MDI system on and reading pres sure
SET
UP
Using the left/right and up/down arrow keys
LeakRate Status
With the word Status fl ashing press the enter key.
ENT
After pressing ENT the display will read:
snXXXXXXdd/dd/dd
unit.
After pressing the enter key a second time, the
LeftMod dd/dd/dd
Type x
After reviewing this display and recording any
Type x
Press the enter key to return to the basic pres-
ENT
ter ies that power the MDI system. Two, mutually exclu-
Section 20.1 Reviewing Instrument Sta tus
Section 20.2 Battery Power Status Check
Page 44
+x.xx V: battery voltage level.
Time in Hours
AA NiCad
4.5 3.25
24 10
en heit. Use of the MDI product at tem per a ture signifi -
Due to the extreme variation in battery
Install new batteries as outlined in the base unit
With the MDI system operating and dis play ing
BAT
CK
Installation of new alkaline bat ter ies will produce
It is recommended that batteries be
Section 21.0 Dual Module Functions
– The ability to subtract the measured value from the
– The ability to add the measured values of the two in-
summation
measurements:
mate ly
differential
Section 21.1 Accuracy of Dual Module
Measurements
Page 45
cu ra cy for the dp mea sure ment for dp ranges less than
Section 21.2 Setting Up Dual Module Differential
With the MDI system off, install the two Quick
With the modules installed, turn the MDI sys-
ON
OFF
With the MDI system on and displaying pres-
sure measurement data from the two installed Quick
UP
Using the up/down and left/right arrow keys
Calib Rtmodule
dp Meas TCmodule
Use the arrow keys to highlight the text “dp
display.
Calib Rtmodule
With the text “dp Meas” fl ashing press the enter
ENT
dp Meas Mode:
To perform dual module differential pressure
dp Meas Mode:
With the text “L-R” fl ashing press the enter key.
To activate the dual module dp mode of op-
er a tion press the port select key one time after the set up
low ing text for a MDI system dis play ing mea sure ment
xxxx xxxx
xxxx xxxx
PSI L-R PSI
PSI mA
xxxx xxxx
PSI PSI
L-R PSI PSI
Pressure Measurement
Page 46
i nate any offset caused by the elevated static to op ti mize
– On a display set up with an L-R indication on one
– Due to the length of the engineering unit des ig na tion
Section 21.3 Setting Up Dual Module Summation
With the MDI system off, install the two Quick
With the modules installed, turn the MDI sys-
ON
OFF
With the MDI system on and displaying pres-
sure measurement data from the two installed Quick
SET
UP
Using the up/down and left/right arrow keys
dp Meas
Use the arrow keys to highlight the text “dp
Calib Rtmodule
With the text “dp Meas” fl ashing press the
NONE L-R L+R
To perform pressure measurement using the
NONE L-R L+R
With the text “L+R” fl ashing press the enter key.
ENT
To activate the dual module dp mode of op-
er a tion press the port select key one time after the set
L+R PSI PSI
L+R PSI PSI
xxxx xxxx
xxx x xxxx
PSI mA
Pressure Measurement
Page 47
xxxx xxxx
PSI PSI
L+R PSI PSI
– On a display set up with an L+R indication on one
– Due to the length of the en gi neer ing unit des ig na tion
• sequentially ungrouped storage
• grouped for certifi cation generation
of an instrument under test.
Battery is Low
Section 22.1 Sequential Data Logging Function
• automatically at a defi ned time interval
• automatically with delayed start
• manually at the push of the data store key
DATA LOG
(Optional)
Section 22.0 Data Logging Function (Op tion al)
Section 22.2 Setting up the Data Logging
Function (Optional)
Page 48
Review Off
Label Erase
Std CertGen
ENT
Section 22.3 Labeling Function – Standard Data
mis sion sequence. Label in for ma tion can be viewed on
With the MDI system on and reading pres sure/
DATA
LOG
Using the up/down and right/left arrows browse
Label Erase
Using the left/right arrow keys select the word
With the word Label fl ashing press the enter key.
- - - - - - - - - - - - - - -
Use the Up/down arrows to enter letters,
With the MDI system on and reading pres sure
LOG
Using the up/down and right/left arrows browse
Auto Manual
Logging Mode
Section 22.4 Automatic Data Logging – Standard
Data Logging Mode
Page 49
With the word ‘‘Auto” fl ashing press the
ENT
Enter Interval
Using the number keys enter the desired time
Enter Interval
After the desired time interval is shown on the
ENT
The MDI system will respond by displaying the
NoneLeftRghtBoth
Using the arrow key select the desired Quick
NoneLeftRghtBoth
With the Quick Select module(s) to be mon i -
Disable Enable
Disable Enable
With the desired format displayed press the
To stop the data logging process press the Data
Review Off
Using the arrow keys select the word off. When
Review Off
With the word “Off” fl ashing press the enter
ENT
Section 22.5 Manual Data Logging – Stan dard
With the MDI system on and reading pres sure
DATA
LOG
Using the up/down and right/left arrows browse
u al” using the arrow keys. When selected the word
Auto Manual
With the word “Manual” fl ashing press the
Data Logging Mode
Page 50
ENT
Readings to Log
Using the arrow key select the desired Quick
Readings to Log
With the Quick Select module(s) to be mon i -
Disable Enable
lect ed.
Date/Time Stamp
With the desired format selected and fl ash ing
ENT
The MDI system is now ready to log data on
DATA
STORE
To disable the manual data logging ca pa bil i ty
LOG
Auto Manual
Using the arrow keys select the word “Off”.
Auto Manual
With the word “Off” fl ashing press the enter
Section 22.6 Review of Stored Data –
With the MDI system on and reading pres sure
LOG
Using the up/down and right/left arrows browse
With the word “Review” fl ashing press the
On In stru ment Display Standard
Data Logging Mode
Page 51
The MDI system will respond by displaying the
+xxx time
number for the data point in the sequence of
logged data.
date/time stamp was enabled.
If both the left and right pressure/fl ow
To review data logged values use the arrow
Key Re sult
< brings the next lowest stored address val ue to
the display.
> brings the next highest stored address value to
the display.
^ skips 10 stored values in in creas ing address
direction.
v skips 10 stored values in de creas ing address
direction.
% brings fi rst data point to display.
mA/V brings last data point to display.
When the review process is complete press the
DATA
LOG
Section 22.7 Erasing of Selected Stored Data
With the MDI system on and reading pres sure
DATA
LOG
Using the up/down and right/left arrows browse
view.” The menu line with the word Review appears as:
Review Off
Review Off
With the word review fl ashing press the enter
Data points may be browsed through by using
Key Result
> brings the next lowest stored address val ue to
the display.
< brings the next highest stored ad dress val ue to
the display.
^ skips 10 stored values in increasing ad dress
direction.
v skips 10 stored values in decreasing ad dress
direction.
% brings fi rst data point to display.
mA/V brings last data point to display.
CE
Standard Data Logging Mode
Page 52
Ent if OK
To delete the displayed stored data point press
+ xxx
Using the arrow keys additional data points can
To exit this function press the data log key.
DATA
LOG
Section 22.8 Erasing All Stored Data
With the MDI system on and reading pres sure
LOG
Using the up/down and right/left arrows browse
Using the left/right arrow keys select the word
Label Erase
With the word Erase fl ashing press the enter key.
ENT
Erase ALL Entrys
Using the right arrow select the word Erase and
ENT
Erase ALL Entrys
To erase all stored data press the enter key.
signed to simplify the capture of measurement data
With the MDI on and displaying mea sure ment
DATA
LOG
play ing the following.
Select Mode
Std CertGen
Standard Data Logging Mode
Section 23.0 Certifi cation Generation Enhanced
Data Logging Mode
Section 23.1 Set Up and Use of Certifi cation
Generation Data Logging Mode
Page 53
Select Mode
ENT
CertGen Exit
Cancel Erase
Using the arrow keys, highlight the text “Cert-
Erase
With the text “CertGen” fl ashing on the display
xxx Points left
Pressing any key will clear the memory avail-
able summary from the display and allow con tin u a tion
play ing the following.
Previous Tag
To initiate the data logging of mea sure ment in-
0, 1, 2, 3, 4, 5,
6, 7, 8, 9, _, A,
B, C, D, E, F, G,
H, I, J, K, L, M,
N, O, P, Q, R, S,
T, U, V, W, X, Y, Z
Page 54
Enter Tag Name
With the desired tag name dis played press the
Collect Readings
AsFound AsLeft
.000000
The MDI can store suf fi cient mea-
sure ment data to calibrate 10 devices each with 10 “as
di tion to storing the mea sure ment test data the head ing
remaining points
Using the numeral keys enter the desired
Enter #of Testpts
10
With the desired number of test points entered
Prior to beginning the collection of data the
Page 55
yyyy= the pres sure mea sure ment value
xxxx= the current measurement value
(output from the device under test)
With the data to be logged shown on the dis-
DATA
STORE
xx yy%
xx = the number of data points (records) and data
yy = the percent of data logging memory allocated
1234 = the measured values in the en gi neer ing units
Repeat the process, subjecting the MDI
DATA STORE
View Done Redo
sure ment data. See step 13 for continuation of
ERASE all data
After selecting “Done” the MDI will
Skip Enter
ENT
Ambient Temperature
To proceed with the entry/recording of the
ENT
73.4
Page 56
With the desired temperature value
None Recal Repl
With the desired selection highlighted press the
ENT
Collect As Left
Yes: If recalibration is selected as the ac tion taken.
No: If replace is selected as the action taken.
AsFnd: If no action is taken because the device under
“Use AF for AL”
To take “As Left” data and store the
Yes No AsFnd
With the text “yes” fl ashing press the enter key
Use the numeral keys to enter the num ber of “as
Enter#of Testpts
Be certain that the desired data to be logged
DATA
STORE
xx = the number of data sets (records) stored in
yy = the percent of data logging mem o ry allocated
1234 = the measured values in the en gi neer ing units
Repeat the process, subjecting the
STORE
AsLeft readings\
Page 57
creas ing order from data point to data point. Use
sure ment data. See step 13 for continuation of the
ERASE all data
After selecting “Done” the MDI will
Ambient Temp
Skip Enter
Skip Enter
To proceed with the entry/recording
per a ture module installed, it will automatically offer the
Enter Amb Temp
With the desired temperature value
None Recal Repl
With the desired selection highlighted
ENT
Points left
Press any key to return to the fi rst “CertGen”
sure ment and test activities.
CE
Section 24.0 MDI System Set Up for Uploading
Stored Data Into an
IBM Compatible PC
Page 58
Turn the power off on the base unit.
Connect the 9 pin RS232 cable to the MDI
Turn the power to the base unit on and with the
SET
UP
Using the arrow keys locate and select the text
Owner Alarm
With the text RS232 fl ashing, press the enter key.
Disable Enable
Using the arrow keys select the word Enable.
Disable Enable
With the word Enable fl ashing press the
Baud Rate
Using the left/right arrow keys select the de-
Baud Rate
With the desired baud rate fl ashing press the
ENT
Disable ISO1745
In order to use the upload software provided
Disable ISO1745
With the text ISO1745 fl ashing press the
ENT
Section 24.1 Installing and Operating Up load
Information regarding the in stal la tion
1- Installation category 1
2- Pollution degree 2
***CAUTION***
Turn the MDI indicator bottom side up and
Software
Section 24.2 Battery Back Up Replacement
Page 59
Remove and place aside the four Phillips head
Holding the two case halves together, turn the
Note the orientation of the cables and the con-
Locate battery to be replaced. The battery unit
Remove depleted battery and install re place -
Remove jumper on connection P6 between pin
Carefully reconnect cable between printed
Carefully reconnect cable between printed
Replace top half of case.
Holding the two case halves together, turn the
Reinstall four (4) screws used to connect the
Follow steps in Section 3.5 to reinstall the
Power unit up and down three (3) times to en-
Section 25.0 Event Timer Function
the Event Timer and data log-
With the MDI system on and measuring pres-
SET
UP
Using the arrow keys select the event timer,
LeakRate Status
With the text EvntTimr selected and fl ashing on
XXXXXX
HH = hours in military time
MM = minutes (0-60)
SS = seconds (0-60)
When entered the start time will look as follows
213000 Start
When the desired start time has been input and
ENT
HHMMSS Stop
Enter the desired stop time using the number
HHMMSS stop
When the desired stop time has been input and
Section 25.1 Event Timer Set-Up
Page 60
Disable Enable
Use the right arrow key to select the word En-
Event Timer
With the word Enable fl ashing press the enter
Section 25.2 Data Log Set Up for Operation
With the MDI system on and reading pres sure
LOG
To program the MDI system for time de layed
Auto Manual
With the word Auto fl ashing press the enter
sec. xxxxxx
Using the number keys enter the desired time in-
Enter Interval
After the desired time interval is entered and
NoneLeftRghtBoth
Using the arrow key select the desired Quick
NoneLeftRghtBoth
With the Quick Select module(s) to be mon i -
ENT
Disable Enable
If data storage is done with the time/date stamp
Using the arrow keys select the desired storage
Disable Enable
With the desired format displayed press the
ENT
with the Event Timer
Page 61
cal ly turn itself on and make the pro grammed mea sure -
Section 26.0 Alarm Function – Overview
With the MDI system on and reading pres sure
SET
UP
Using arrow keys select the alarm function
DateTimeRS232
With the word Alarm fl ashing press the enter key.
ENT
installed
After pressing the enter key the display will read:
Enable Disable
Alarm Relay
With the word “Enable” fl ashing press the enter key.
After pressing the enter key the MDI system
High Setpoint
Using the number keys, enter the alarm level
10.0
After the desired alarm value has been keyed
(Optional Feature)
Section 26.1 Alarm Set Up
Page 62
Open Close
When the desired confi guration has been
After the enter key has been pressed the MDI
Monitor Function
i tor ing the left or right Quick Select pressure or tem-
per a ture mod ule. Using the arrow keys select the desired
Use the left/right arrow keys to select the
Monitor Function
ENT
Section 27.0 Recertifi cation of the Cal i bra tor
cess code. The recalibration ac cess code is dif fer ent
The MDI system will respond by displaying the
Open Close
Using the arrow keys select the desired me-
chan i cal confi guration. When selected the con fi g u ra tion
Open Close
ENT
After pressing the enter key the MDI system
????????
Using the number keys on the keypad, enter the
Low Setpoint
After the desired alarm value has been keyed
ENT
The MDI system will respond by displaying the
Open Close
Using the arrow keys select the desired me-
chan i cal confi guration. In this example we have con-
fi g ured the system to close the relay contact when the
Section 27.1 Access Codes
Page 63
Section 27.2 Calibration/Recertifi cation Over view
low ing equip ment is re quired to per form recalibration or
ca pa ble of pro vid ing
with an ac cu ra cy rat ing
with ba nana jacks and mini clips.
- Model CQS cal i bra tion quick se lect
Module Bay #1 Module Bay #2
Remove any in stalled measurement modules.
Turn pow er on and al low for at least 15 min utes
With the MDI pow ered up and dis play ing a
SET
UP
Using the ar row keys lo cate the text “Calib” in
Calib Rtmodule
With the text “Calib” dis played and fl ash ing
The MDI will re spond by dis play ing:
.00000
Enter the 5 dig it cal i bra tion ac cess code pro-
vid ed with the base unit.
12345
With the cor rect ac cess code dis played press
Electrical
Pressure
When this screen ap pears, the word “Elec tri cal”
Calibration
Section 27.3 Required Equipment
Section 27.4 As Recieved Readings of the
Base Unit Electronics
Page 64
The val ue dis played un der the dashed line
sure ment. The read ing will look as fol lows:
——— 1.0V
-.xxxxx Ref Check
To check the measured volt age us ing a pre-
ci sion volt age source:
to J3 pin 7
sure ment. The read ing will look some thing like fol lows:
——— 0.1V
CE
rent or volt age) to be test ed and in put ting a se ries of
With the MDI on and dis play ing pres sure mea-
To per form “as re ceived” read ings use the down
Reference Check
With text Reference Check Flash ing press the
*****WARNING*****
nec tions for the in put of the volt age stan dard to the MDI
To check the measured volt age us ing a pre-
ci sion volt age source ap ply 1.00000 volt ±50 microvolts.
When the MDI is ready to measure the
Apply 1.00000V
ci sion volt age gen er a tor so that the pos i tive line is con-
nect ed to pin 7 and the ground is con nect ed to Pin 6.
Section 27.5 Adjustment/Calibration Base Unit
Electronics
Page 65
SET
UP
Using the ar row keys lo cate the text “Calib” in
When the cal i bra tion func tion has been se lect ed
Calib RTmodule
With the text “Calib” dis played and fl ash ing
The MDI will re spond by dis play ing:
.000000
Enter the 5 dig it cal i bra tion ac cess code pro-
vid ed with the MDI base unit.
12345
With the cor rect ac cess code dis played press
Pressure
Use the ar row keys to se lect the word “elec-
tri cal”. When se lect ed the word will fl ash on the
Electrical
When this screen ap pears, the word “Elec tri cal”
ENT
Cal½i¼braÐtion
Ref¼erÐence Check
With the text “Calibrate” fl ash ing
Using a pre ci sion volt age source ap ply 1.00000
i mum, equal 1.0 volt. Do not ac cept a volt age less than
*****WARNING*****
ApÐply 1.00000V
Page 66
Apply 20.0000 mA
to mA jack
Using a pre ci sion cur rent gen er a tor ap ply a
When the prop er cur rent is be ing ap plied press
ENT
xxxxx workÐing
Save Can¼cel
Using the left/right ar row keys se lect “Save” to
ma nent ly destroyed.
With the de sired se lec tion fl ash ing (Save or
ENT
mmddyy
Using the num ber keys en ter the cur rent date
mmddyy
With the de sired date en tered and dis played,
es sary in ter nal ad just ment to cal i brate the volt age mea-
sure ment elec tron ics to 1.0000 volts.
The read ing must
ApÐply 0.100000V
to J3 pin 7
Apply 10.0000V
Using a pre ci sion volt age gen er a tor ap ply a
ENT
xxxxx workÐing
to volts jack
Using a pre ci sion volt age gen er a tor ap ply a
When the prop er volt age is be ing ap-
plied press the en ter key.
ENT
Page 67
Turn off the MDI and in stall the
Turn on theMDI to re sume gen er al pres sure
try (CE) key. When the clear en try key is pressed dur ing
Section 27.6 Recertifi cation of Quick Select
sure stan dards must be used to as sure the accu-racy of the
a lent range would have to have an ac cu ra cy of at least
am ple, if a ±0.1% of span Quick Se lect pres sure module
i mum ac cu ra cy of ±0.0125% of span.
With the pow er to the MDI off in stall the Quick
Pow er up the MDI sys tem by press ing the
ON
OFF
Set the left side of the dis play for the en gi -
With the MDI on and dis play ing pres sure mea-
SET
UP
Using the ar row keys lo cate the text “Calib” in
With the text “Calib” dis played and fl ash ing
The MDI will re spond by dis play ing:
.000000
Enter the 5 dig it cal i bra tion ac cess code pro-
vid ed with the MDI base unit.
12345
With the cor rect ac cess code dis played press
ENT
PresÐsure
With the word “Pres sure” fl ash ing
Yes No
To per form zero cal i bra tion (ad just ment) se lect
ENT
With the pres sure module at zero pres sure,
Pres sure Modules
Page 68
menced.
plied to the left Quick Se lect pres sure module.
With the full scale (F.S.) pres sure ap-
plied and the cor re spond ing val ue shown on the dis play,
Yes No
Yes No
With the word No fl ash ing press the
ENT
Save Can¼cel
To save the new zero and span val ues to mem-
o ry, there by over writ ing the pre vi ous ly stored val ues
mmddyy
Using the num ber keys en ter the cur rent date
mmddyy
PresÐsure Type
xxxxx workÐing
Full Scale Cal
To per form full scale cal i bra tion (ad just ment)
ENT
Apply the full scale pres sure for the
sure ment range of the pres sure module be ing cal i brat ed)
ENT
Enter presÐsure
Using the key pad en ter the
ex act
val ue of the
Page 69
With the de sired date en tered and dis played,
Turn off the MDI and in stall the de-
sired Quick Se lect module.
Turn on the MDI to re sume gen er al pres sure
To re-lin ear ize a Quick Se lect pres sure module
Linearity Cal
With the word “Yes” fl ash ing press the
ENT
Clr Old Lin Data
Use the ar row keys to se lect “Pro ceed” to con-
Cancel Pro¼ceed
To con tin ue the lin ear iza tion pro cess, with the
value 1.00000
Apply the pres sure re quired for point one and
Apply and en¼ter
With the ap plied pres sure dis played
ENT
+xxxxx working
value 2.00000
Apply the pres sure re quired for the next cal i -
Apply and en¼ter
With the re quired pres sure lev el ap-
plied and shown on the dis play press the en ter key.
ENT
Repeat steps 23-26 as many times as
sure modules. Fac to ry cal i bra tion con sists of a 10 point
The num ber of cal i bra tion points
Sensor Number
Accuracy of Points
0.025% & 0.05% 20
including temperature (5% in cre ments)
Page 70
0.025-0.07% 11
(10% in cre ments and zero)
0.1% 6
0.25% 5
When the fi nal lin ear iza tion point to
CE
Save Can¼cel
To save the new lin ear iza tion data
If “can cel” is se lect ed the cal i bra tor
- - - - - -
Using the num ber keys en ter the cur rent date
031196
With the de sired date en tered and dis played,
ENT
Turn off the MDI and in stall the de-
sired Quick Se lect module.
Turn on the MDI to re sume gen er al pres sure
Page 71
TO CONVERT cmH
FROM TO
@ 20°C @ 20°C @ 20°C @ 0°C @ 0°C
kg/cm
kg/cm
water water water
psi 1 68.9476 0.0689476
6894.76 6.8947 70.433 27.730 2.3108 51.7149 2.03602 70.030696 0.07030686 26.9484 2.2457
mbar
0.0145038 1 0.001
bar
atm
14.6959 1013.25 1.01325 1 101325 101.325 1035.08 407.511
Pa
0.145038 10.0 0.010 0.0098692 1000 1 10.215 4.02118 0.3352 7.5006 0.295300 10.19716 0.0101972 3.9085 0.32571 .099276
cmH
.382613 0.031884 .0097182
ftH
0.0193368 1.33322 0.0013322 0.00131579 133.322 0.133322 1.3619 0.53620 0.04468 1 0.03937 1.35951 1.35951 .521096 0.043424 .013236
in. sea water
ft sea water
0.4453 30.702 0.030702 0.030301 3070.2 3.0702 31.3638 12.3482 1.02900 23.029 0.90664 31.308 0.031308 12 1 .3048
m sea water
Page 72
0 00000000 00 (NUL)
1 00000001 01 (SOH)
2 00000010 02 (SRX)
3 00000011 03 (ETX)
4 00000100 04 (EOT)
5 00000101 05 (ENQ)
6 00000110 06 (ACK)
7 00000111 07 (BEL)
8 00001000 08 (BS)
9 00001001 09 CI)
10 00001010 0A (LF)
11 00001011 0B (VT)
12 00001100 0C (FF)
13 00001101 0D (CR)
14 00001110 0E (SO)
15 00001111 0F (SI)
16 00010000 10 (DLE)
17 00010001 11 (DCI)
18 00010010 12 (DC2)
19 00010011 13 (DC3)
20 00010100 14 (DC4)
21 00010101 15 (NAK)
22 00010110 16 (SYN)
23 00010111 17 (SRX)
24 00011000 18 (CAN)
25 00011001 19 (EM)
26 00011010 1A (SUB)
27 00011011 1B (ESC)
28 00011100 1C FS)
29 00011101 1D (GS)
30 00011110 1E (RS)
31 00011111 1F (115)
32 00100000 20 (SP)
33 00100001 21 !
34 00100010 22 ’’
35 00100011 23 #
36 00100100 24 $
37 00100101 25 %
38 00100110 26 Et
39 00100111 27 ‘
40 00101000 28 (
41 00101001 29 )
42 00101010 2A *
43 00101011 2B +
44 00101100 2C ’
45 00101101 2D -
46 00101110 2E .
47 00101111 2F /
48 00110000 30 0
49 00110001 31 1
50 00110010 32 2
51 00110011 33 3
52 00110100 34 4
53 00110101 35 5
54 00110110 36 6
55 00110111 37 7
Hexa- ASCII
Dec i mal Binary decimal Character
Hexa- ASCII
Dec i mal Binary decimal Character
56 00111000 38 8
57 00111001 39 9
58 00111010 3A :
59 00111011 3B ;
60 00111100 3C <
61 00111101 3D =
62 00111110 3E >
63 00111111 3F ?
64 01000000 40 @
65 01000001 41 A
66 01000010 42 B
67 01000011 43 C
68 01000100 44 D
69 01000101 45 E
70 01000110 46 F
71 01000111 47 G
72 01001000 48 H
73 01001001 49 I
74 01001010 4A J
75 01001011 4B K
76 01001100 4C L
77 01001101 4D M
78 01001110 4E N
79 01001111 4F O
80 01010000 50 P
81 01010001 51 Q
82 01010010 52 R
83 01010011 53 S
84 01010100 54 T
85 01010101 55 U
86 01010110 56 V
87 01010111 57 W
88 01011000 58 X
89 01011001 59 Y
90 01011010 5A Z
91 01011011 5B [
92 01011100 5C /
93 01011101 5D ]
94 01011110 5E ^
95 01011111 5F -
96 01100000 60 ‘
97 01100001 61 a
98 01100010 62 b
99 01100011 63 c
100 01100100 64 d
101 01100101 65 e
102 01100110 66 f
103 01100111 67 g
103 01100111 67 g
104 01101000 68 h
105 01101001 69 1
106 01101010 6A j
106 01101010 6A j
107 01101011 6B k
108 01101100 6C l
109 01101101 6D m
110 01101110 6E n
111 01101111 6F o
Page 73
Hexa- ASCII
Dec i mal Binary decimal Character
Hexa- ASCII
Dec i mal Binary decimal Character
112 01110000 70 p
112 01110000 70 p
113 01110001 71 q
113 01110001 71 q
114 01110010 72 r
115 01110011 73 s
116 01110100 74 t
117 01110101 75 u
118 01110110 76 v
119 01110111 77 w
120 01111000 78 x
121 01111001 79 y
121 01111001 79 y
122 01111010 7A z
123 01111011 7B {
124 01111100 7C |
125 01111101 7D }
126 01111110 7E ~
127 01111111 7F (DEL)
128 10000000 80
129 10000001 81
130 10000010 82
131 10000011 83
132 10000100 84
133 10000101 85
134 10000110 86
135 10000111 87
136 10001000 88
137 10001001 89
138 10001010 8A
139 10001011 8B
140 10001100 8C
141 10001101 8D
142 10001110 8E
143 10001111 8F
144 10010000 90
145 10010001 91
146 10010010 92
147 10010011 93
148 10010100 94
149 10010101 95
150 10010110 96
151 10010111 97
152 10011000 98
153 10011001 99
154 10011010 9A
155 10011011 9B
156 10011100 9C
157 10011101 9D
158 10011110 9E
159 10011111 9F
160 10100000 AO
161 10100001 A1
162 10100010 A2
163 10100011 A3
164 10100100 A4
165 10100101 A5
166 10100110 A6
167 10100111 A7
168 10101000 A8
169 10101901 A9
170 10101010 AA
171 10101011 AB
172 10101100 AC
173 10101101 AD
174 10101110 AE
175 10101111 AF
Page 74
176 10110000 B0
177 10110001 B1
178 10110010 B2
179 10110011 B3
180 10110100 B4
181 10110101 B5
182 10110110 B6
183 10110111 B7
184 10111000 B8
185 10111001 B9
186 10111010 BA
187 10111011 BB
188 10111100 BC
189 10111101 BD
190 10111110 BE
191 10111111 BF
192 11000000 C0
193 11000001 C1
194 11000010 C2
195 11000011 C3
196 11000100 C4
197 11000101 C5
198 11000110 C6
199 11000111 C7
200 11001000 C8
201 11001001 C9
202 11001010 CA
203 11001011 CB
204 11001100 CC
205 11001101 CD
206 11001110 CE
207 11001111 CF
208 11010000 D0
209 11010001 D1
210 11010010 D2
211 11000011 D3
212 11010100 D4
213 11010101 D5
214 11010110 D6
215 11010111 D7
216 11011000 D8
217 11011001 D9
218 11011010 DA
219 11011011 DB
220 11011100 DC
221 11011101 DD
222 11011110 DE
223 11011111 DF
224 11100000 E0
225 11100001 E1
226 11100010 E2
227 11100011 E3
228 11100100 E4
229 11100101 E5
230 11100110 E6
231 11100111 E7
232 11101000 E8
233 11101001 E9
234 11101010 EA
235 11101011 EB
236 11101100 EC
237 11101101 ED
238 11101110 EE
239 11101111 EF
240 11110000 F0
241 11110001 F1
242 11110010 F2
243 11110011 F3
244 11110100 F4
245 11110101 F5
246 11110110 F6
247 11110111 F7
248 11111000 F8
249 11111001 F9
250 11111010 FA
251 11111011 FB
252 11111100 FC
253 11111101 FD
254 11111110 FE
255 11111111 FF
Hexa- ASCII
Dec i mal Binary decimal Character
Hexa- ASCII
Dec i mal Binary decimal Character
Page 75
PHYSICAL SPECIFICATIONS
–4° to 158°F
ac adapter provided for 100Vac/60 Hz
Pack*
–15 to 50 psi
/
NPT female
/
British standard
/
NPT female
/
female with fl ush port
(ranges 10 psi and over)
G
/
British standard
G
/
British standard with fl ush
(ranges 10 psi and over)
Welded VCR fi tting with standard
fi nish
type SMP
BASE UNIT OPERATING SPECIFICATIONS
TEMPERATURE INTERFACE MODULES
PRESSURE SENSOR MODULE SPECIFICATIONS
ACCESSORIES
Page 76
0.5*
1.0*
2.0*
3.0*
5.0*
10*
15*
25*
50*
identifi ed above are
Consult factory.
±0.125*
±0.25*
±0.5*
±1.0*
±1.5*
±2.5*
±5.0*
±7.5*
±12.5*
±25*
±50*
±75*
±100*
with 9-pin D type at 300,
Calibration module and proper
Provide 9 Vdc output.
Protects base unit
Connects base unit to 9-pin
Serial port connector on
Provide
/
/
NPT external fi tting adaptor to convert hose
/
STANDARD RANGES
HQS-2 HQS-1
(gauge and (gauge/
absolute differential
pressure) pressure)
*5
10
15
30
50
60
100
150
200
250
300
500
600
1000
1500
2000
2500
3000
5000
6000
7500
10,000
vacuum
*5
10
15
compound
±5
±10
±15
–15/+30
–15/+60
ELECTRICAL SPECIFICATIONS
INTERFACE AND DATA LOGGING
ACCESSORIES
ST-2H DIMENSION DRAWINGS
Page 77
Includes the MDI base unit and GQS-TC1 interface module.
Does not include inaccuracy of the thermocouple device. Consult thermocouple manufacturer or ISA MC96.1 for
–210 to –151 0.7 1.1 0.02
–150 to 1200 0.3 0.4 0.01
–200 to –101 1.0 1.5 0.03
–100 to 999 0.5 0.8 0.02
0
14.0
0.44
°F = (1.8 x °C) + 32
°K = °C + 273.15
°R = (1.8 x °C) + 427.67
Does not include inaccuracy due to the thermocouple device. Reference junction not applicable
to direct millivolt readings.)
0.0125 millivolts .001
Max. additional error
Accuracy @ 25°C Accuracy @ 25°C due to ambient
Thermocouple Measurement Range Ambient (Not Including Ambient (Including temperature deviation
Type (°C) Internal Reference Internal Reference from 25°C. Expressed
Junction) Expressed as ±°C Junction) Expressed as ±°C as additional C error per
each C deviation from 25°C
K –240 to –201 1.5 2.2 0.05
T –250 to –201 1.5 2.2 0.05
–200 to –101 0.8 1.2 0.03
–100 to 400 0.5 0.8 0.02
E –250 to –201 1.2 2.0 0.04
–200 to –101 0.6 1.1 0.02
–100 to 400 0.3 0.6 0.01
R&S –50 to 299 3.4 3.6 0.10
300 to 1768 1.2 1.3 0.04
B 100 to 199 14.0
200 to 499 5.0 5.0 0.16
500 to 999 3.0 3.0 0.08
1000 to 1820 1.2 1.2 0.04
N –250 to –226 4.3 5.7 0.14
–225 to –101 2.1 2.8 0.07
–100 to 1300 1.0 1.4 0.02
Input Range of Accuracy @ 25°C Max. additional error due to ambient
temperature deviation from 25°C.
Expressed as additional millivolt error
per each °C deviation from 25°C
–10 to 100 millivolt
0
Page 78
Remote Communications Mode
Connect cable to MDI Indicator serial port and PC com port. The cable connection should be null modem (i.e
Power up MDI Indicator by pressing the on/off button.
Confi gure the serial port on the MDI indicator as follows:
A. Press “Setup”
B. Cursor to “RS232” <ENT>
C. Cursor to “Enable” <ENT>
D. Cursor to “9600” <ENT>
E. Cursor to “Remote” <ENT>
The MDI indicator’s serial port is now con fi g ured for 9600 baud communication.
Confi gure the com port in a PC Terminal application.
A. Click on the Settings menu option and pull down to select Com mu ni ca tions
B. Click on 9600 Baud, 8 Data Bits, 1 Stop Bit, Parity None, Flow Control None, select the appropriate
1. Type a question mark character and press enter on the terminal keyboard. The Indicator should respond
? 0.004469,-0.000227
2. If there is no response, verify the cable connections, cable type (modem vs.. thru), the Com Port settings
Page 79
Commands must be ter-
The underscore char ac ter ( _ ) in the following table represents a single space.
Command Function
? Returns the cur rent displayed value(s)
BATCK? Returns the battery charge status
DAMP? Returns the status of the damping function
DAMP_0 Turns damping off
DAMP_1 Sets damping to level 1
DAMP_2 Sets damping to level 2
DAMP_3 Sets damping to level 3
EUNIT? Returns a code representing the current engineering unit(s)
EUNIT_1 Sets left display to PSI
EUNIT_2 Sets left display to inHG
EUNIT_3 Sets left display to inH2O
EUNIT_4 Sets left display to FtSeawater
EUNIT_5 Sets left display to Bar
EUNIT_6 Sets left display to mBar
EUNIT_7 Sets left display to Kpa
EUNIT_8 Sets left display to MPA
EUNIT_9 Sets left display to mmHg
EUNIT_10 Sets left display to cm Water
EUNIT_11 Sets left display to mm Water
EUNIT_12 Sets left display to kg/cm2
EUNIT_13 Sets left display to User Defi ned Engineering Unit (see
engineering unit feature in manual)
Note:
Each displayed value can be set to a unique engineering unit by in clud ing
both in the command line as in the following example: EUNIT_2,_11. This will
set the left display to inches HG and the right display to mm Water.
EUNIT_15 Degrees C
EUNIT_16 Degrees F
EUNIT_17 Degrees K
EUNIT_18 Degrees R
EUNIT_19 Ohms
Page 80
Note:
EUNIT_15 through EUNIT_19 commands apply only when a temperature module
is in stalled in one of the MDI ports
HOLD? Returns the status of the display hold feature
HOLD_1 Activates hold
HOLD_0 Deactivates hold
KEYLOCK? Returns the status of the keylock feature
KEYLOCK_1 Activates (locks out) front panel access
KEYLOCK_2 Deactivates front panel keylock
LAMDIERR? Returns the value of the last error code
MINMAX? Returns the min and max values for each installed module
PORT? Returns a value representing the current port confi guration
PORT_0 Set left display to pressure right display to Ma
PORT_1 Set left display to Ma and right display to pressure
PORT_2 Set left and right displays to pressure
PORT_3 Set left display to left minus right differential display
PORT_4 Set right display to left minus right differential display
PORT_5 Set left display to left plus right
PORT_6 Set right display to left plus right
TARE? Returns status of tare function
TARE_1,_0 Activate tare on left display only
TARE_0,_1 Activate tare on right display only
TARE_1,_1 Activate tare on both displays
TARE_0,_0 Deactivate Tare on both displays
ZERO Zeros installed sensors
ZERO_0,_1 Zero left display only
ZERO_0,_1 Zero right display only
ZERO_1,_1 Zero both ports
Page 81
PIN FUNCTION
2 4W+
3 4W–
4 2W–
PIN FUNCTION
2 4W+
3 4W–
4 2W–
Page 82
1. Remove all existing modules from the base unit (handheld calibrator fi rmware rev. 3.01 or later, digital indicator
2. Attach copper wire to the + and - terminal posts of a precision millivolt calibrator/source, rated at .0025% or better.
3. Wire the opposite end of the wires to a miniature “U” type (copper-copper) thermocouple connector, and plug the
4. Turn on the millivolt calibrator/source and adjust until it is supplying 0mV to the TC1 module.
5. Turn on the base unit by pressing the on-off switch. Allow the base unit to complete its startup routine.
6. Press the “Setup” button.
7. Using the arrow key, toggle once to the right and down 7 times until “TCmodule” is fl ashing.
8. Press enter.
9. Set engineering unit to “millivolt” by pushing the right arrow button until “mV” is fl ashing.
Page 83
Page 84
© Ashcroft Inc.
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