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5.2 Module 2 - S
2-SEC
SEL
HI-En
Max Display
Enable
MAX DISPLAY ENABLE
HI-En
NO
NO
Enables the Maximum Display Capture capability.
MAX CAPTURE DELAY TIME
HI-t
0. 0
to
999. 9
2. 0
When the Input Display is above the present MAX value for the entered
delay time, the meter will capture that display value as the new MAX reading.
A delay time helps to avoid false captures of sudden short spikes.
MIN DISPLAY ENABLE
LO-En
NO
NO
Enables the Minimum Display Capture capability.
MIN CAPTURE DELAY TIME
LO-t
to
0. 0
999. 9
2. 0
When the Input Display is below the present MIN value for the entered delay
time, the meter will capture that display value as the new MIN reading. A delay
time helps to avoid false captures of sudden short spikes.
FACTORY SERVICE OPERATIONS
FCS
NO
NO
Select
to perform either of the Factory Service Operations shown below.
YES
RESTORE FACTORY DEFAULT SETTINGS
Entering Code 66 will overwrite all user settings with
CodE
the factory settings. The meter will display
66
return to
CodE 00
Pressing both the SEL and the RST button on power-up
will also load the factory settings and display
the event of a memory failure or corruted data.
econdary
PARAMETER MENU
LO-En
HI-t
Max Capture
Min Display
Delay Time
Enable
YES
seconds
YES
seconds
yES
rESEt
. Press SEL button to exit the module.
. This allows operation in
rESEt
f
unction
LO-t
FCS
Min Capture
Factory
Delay TIme
Service
Operations
CodE
48
slowly change. The result is that the stored calibration values may no longer
accurately define the input circuit. For most applications, recalibration every 1
to 2 years should be sufficient.
Calibration of the CUB5TC involves a voltage calibration and a cold
junction calibration. It is recommended that both calibrations be performed.
The voltage calibration MUST precede the cold junction calibration. Allow 30
minute warm up before performing any calibration related procedure. The
following procedures should be performed at an ambient temperature of 15 to
35 °C (59 to 95 °F).
Calibration should only be performed by individuals experienced in
calibrating electronic equipment.
CAUTION: The accuracy of the calibration equipment will directly affect the
accuracy of the CUB5TC.
Input Voltage Calibration
1. Connect a precision DC voltage source with an accuracy of 0.01% or better
to the TC+ (positive) and the TC- (negative) terminals of the CUB5TC. Set
the output of the voltage source to zero.
2. With the display at
will display
CAL NO
3. Press the
button to select
RST
4. Press the
button. Display reads
SEL
5. With the voltage source set to zero, press
eight seconds.
6. When display reads
reads
for about eight seconds.
CALC
7. When display reads
the normal display mode.
8. Proceed to Cold Junction Calibration.
Cold Junction Calibration
1. Install all option cards needed for your application and the rear cover,
or invalid results will occur.
2. The ambient temperature must be within 20°C to 30°C.
3. Connect a thermocouple (types T, E, J, K, or N only) with an accuracy of 1°C
or better to the meter.
4. Enter programming mode and verify the following settings in Module 1:
= thermocouple type connected to the unit
tYPE
=
;
CJC
YES
SCALE
5. Place the thermocouple in close thermal contact to a reference thermometer
probe. (Use a reference thermometer with an accuracy of 0.25°C or better.)
The two probes should be shielded from air movement and allowed sufficient
time to equalize in temperature. (A calibration bath of known temperature
could be used in place of the thermometer.)
6. Compare the unit display with the reference temperature indicator (or
calibration bath). If a difference of more than ±1.0 °C exists, note the
difference (CJ error) and continue with cold junction calibration.
CJ Error = Reference Temperature - Unit Display.
7. Enter programming mode. Step through Module 2 to the Service Access
and then
Code parameter and select
unit displays
CAL NO
8. Press
. Display reads
SEL
Calculate a new cold junction value as follows:
New cold junction = Current cold junction + CJ Error (noted above)
9. Press
and set the display to the new cold junction value. Press and hold
RST
. Display reads
SEL
10. Press
twice to exit calibration and return to the normal display mode.
SEL
Verify the input reading is correct. If not, repeat steps 6 through 10.
8
p
(
araMeterS
Pro
CodE
Access Code
For Service
Operations
CALIBRATION
The CUB5TC uses stored voltage calibration and cold
junction temperature values to provide accurate temperature
and voltage measurements. Over time, the electrical
characteristics of the components inside the meter could
, press and hold the
SEL
CodE 48
.
.
INP
.
0. 0 u
. Display reads
SEL
, apply 60.000 mV input signal. Press
60. 0 u
, press
twice to exit Module 2 and return to
SEL
CAL NO
=
;
=
;
=
°C
dECPt
0. 0
OFSEt
0
. Press and hold the
CodE 48
. Press the
button to select
RST
followed by the current cold junction value.
CJC
for about four seconds and then returns to
CALC
)
2-SEC
button for 2 seconds. Unit
for about
CALC
. Display
SEL
button until the
SEL
.
CJC
.
CAL NO
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