IO Thrifty CAL599 User manual

CAL599
Thermocouple and Process Signal
Meter and Signal Source
IOThrifty
website: IOThrifty.com
email: [e-mail]
Phone: (860)733
-
1117

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Overview
This meter has the following functions:
100 mV, 30 V DC voltage measurement, 20 mA DC
current measurement, and switching value measurement;
100 mV, 30 V DC voltage output, 20 mA DC current
output and SIMULATE output;
V, mA manual step output,automatic waveform output;
Simultaneous display of V, mA and percentage;
Loop detection function: It simultaneously provides the 24
V loop power supply and measures the current.
Eight scale division (i.e., R, S, B, K, E, J, T and N)
thermocouple measurement and output function;
Temperature display in Celsius degree and Fahrenheit
degree;
Automatic and manual cold junction compensation
function.
Open-package Inspection
Check the goods to see if they are damaged during delivery.
Check if the goods are complete, and keep the packing materials
for future delivery.
This meter comes with the following standard
accessories:
• One pair of test leads (with alligator clips)
(H000013-00)
• One manual
• Three 1.5V alkaline batteries (LR03/AAA)
Safety Warnings
The design, manufacturing and test of this meter all meet

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the safety standard requirements of IEC61010-1. The manual
contains the warnings and safety rules that users must comply
with to ensure the safe use of the meter and its safe status. Please
read the following instructions before use.
Warning
Do not use a damaged meter. Before using the meter,
please check its enclosure to see if there is any crack,
missing plastic part or if its outer protective cover is in
place. Please pay special attention to the insulation layer of
the joints.
Please make sure that the battery cover is locked tightly
before using the meter.
Please remove the test leads from the meter before opening
the battery cover.
Check the test lead to see if its insulation has any damage
or it has any exposed part. Check the connectivity of the
test leads. If the lead is damaged, please replace it before
using the meter.
If the meter malfunctions, it means that the protection
could have been damaged, so please do not use it. If there
is any doubt, the meter should be sent for maintenance.
Do not use the meter near explosive gases, steam or dust.
The meter only uses LR03/AAA batteries, so please make
sure the battery is correctly installed.
When using a test probe, the finger should hold the back of
the probe's protective layer.
When connecting wires, connect the common test leads
first, and then connect the live test leads. When
dismantling, remove the live test lead first.
Please carefully read and understand the manual before
using the meter.
The requirements of the manual must be complied with at
any time, and the manual should be well kept to ensure it

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available for reference at any time.
During the meter test, incorrect operation may lead to
accident and damage to the meter.
Cautions
To prevent damage to the meter caused by the tested
equipment :
The knob switch must be turned to the correct position of
measurement range when conducting a measurement. The
test lead and the tested circuit must be disconnected before
turning the knob switch. It is strictly prohibited to switch
the range during a measurement, to prevent damage to the
meter.
When the screen shows " " signal, do not use the
meter.
Do not store or use the meter in a high temperature, high
humidity, combustible, explosive, or strong
electromagnetic environment, or a place with excessive dew
or direct exposure to sunlight.
Do not use abrasives or solvents to clean the meter; please
use a damp cloth or neutral detergent.
When the meter is dampened, please dry it up before
storing it.
Symbol
Symbol Meaning Symbol Meaning
AC Grounding
DC Double insulation
AC and DC Battery
Critical information

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Chapter II
Understand the Meter
Meter Panel
Figure 1
Startup

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To switch on the meter, please turn the knob switch to any
of the function positions.
When the power is turned on, the meter starts an internal
self-diagnosis with a full screen display before corresponding
operations can be conducted.
To ensure correct live operation of the meter, the meter
must be powered off for 5 seconds before restarting it.
Automatic Power Off
The factory setting of the meter: If the user does not
perform any operation on the meter within 15 minutes, it will
automatically turn off the power.
Once the meter automatically powers off, to restart it,
please turn the knob switch to OFF position and then turn it on.
Users can set on their own whether to use the automatic
power off function (Refer to Chapter IV "Setting Function").
Note: The meter will still consume about 1 mA current after
it automatically turns off power, so it is recommended to turn the
knob switch to the OFF position when not using it.
Turn on Back Light
Press the button to turn on the back light, and press the
button again to turn it off.
Automatic Back Light off
The factory setting of the meter: If the user does not turn off
the meter's back light within 30 seconds, the meter will
automatically turn off the back light.
Users can set on their own whether to use the automatic
back light off function (Refer to Chapter IV "Setting Function").
Turn on Flash Light
Press the button continuously for more than 2 seconds
to turn on the flash light, and press the button continuously
for more than 2 seconds again to turn it off.
Automatic Flash Light off
The factory setting of the meter: If the user does not turn off
the meter's back light within 30 seconds, the meter will
automatically turn off the flash light.
Users can set on their own whether to use the automatic
flash light off function (Refer to Chapter IV "Setting Function").
Knob Switch
Turn the knob switch to any function position to switch on

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the meter. The standard display of the function will be shown on
the screen of the meter.
Figure 2
No. Location Knob Switch Function
①
DC millivolt (DCmV) measurement
TC measurement can be selected by
pressing the button .
②
DC voltage (DVC) measurement
③
Switching value measurement
④
DC current (DCmA) measurement
⑤
Loop current measurement (loop
power supply)
⑥
Current output
⑦
Analog transmitter
⑧
DC voltage (DCV) output
⑨
DC millivolt (DCmV) output
TC output can be selected by pressing
the button .
Display Screen
Figure 2-3 and Table 2-3 are the illustrations for the screen
display.

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Figure 3
Display Illustrations
Low battery
INPUT
The meter works in the measurement mode
The meter works in the output mode
Start automatic waveform output
Manual cold junction compensation of
thermocouple
Automatic cold junction compensation of
thermocouple
Data display area
% Percentages of voltage and current
K J R T S B E N Thermocouple (TC) scale division
℃, ℉Celsius degree, Fahrenheit degree.
mV, V, mA Units of voltage and current
Automatic ramp output, manual step output
25% 100% 25% 100% step output
▲▲▲▲ Output setting position
Automatic Power Off
Chapter III
Use of Meter
Measurement of DC Voltage
1. Turn the knob switch to the white “ ”or“ ”position;

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2. Insert the black probe into "COM" plughole and the red probe
into "INPUT" plughole;
3. Connect the probes to the circuit to be measured and read the
measured value after stabilization.
Displayed voltage value
Percentage display
0~10V 1~5V
0.00V 0.0% -25.0%
1.00V 10.0% 0.0%
5.00V 50.0% 100.0%
10.00V 100.0% 225.0%
30.00V 300.0% 750.0%
Measurement of Current
Turn the knob switch to the white " " position;
1. Insert the black probe into "COM" plughole and the red probe
into "INPUT" plughole;
2. Connect the probes to the circuit to be measured and read the
measured value after stabilization.
Displayed current value
Percentage display
4~20mA 0~20mA
0.00mA -25.0% 0.0%
4.00mA 0.0% 20.0%
20.00mA 100.0% 100.0%
22.00mA 112.5% 110.0%
Measurement of Circuit Current

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Figure 4
This function can be used to measure the flowing current
when 24V constant DC is applied.
The 24V circuit measurement function can be used to
measure the transmitter circuit.
(The meter can be connected to the transmitter instead of the
signal regulator. )
Warning
The typical value of circuit power supply is 24VDC. The
voltage between terminals may exceed 24V, as the case may be,
such as circuit current value, and the existence of internal series
resistance, and others.
1. Turn the knob switch to the " " position;
2 Insert the black probe into "INPUT" plughole and red probe
into "OUTPUT" plughole;
3. Connect the probes to the circuit to be measured and read the
measured value after stabilization.
Test of Switching Value
1. Turn the knob switch to " " position;
2. Insert the black probe into "COM" plughole and red probe
into "INPUT" plughole;
3. Connect the probes to the contacts on the switch to be tested.
And display "OFF" (open) or "ON" (close) according to the
status of the switch. When the test result is "ON", the buzzer
will tweet. When the switch resistance exceeds 20kΩ, it is
considered to be in an "OFF" status.
Measurement of Thermocouple
1. Turn the knob switch to white " ”" position and select
the corresponding scale division of thermocouple (TC).
2. Insert the thermocouple into "COM" and "INPUT" plugholes.
Ensure that the thermocouple plug with + symbol is
inserted into "INPUT" plughole of the meter.
3. Read the measurement result from the display.
The main display area shows the temperature value and the
auxiliary display area shows the cold junction temperature value.
Users can select automatic compensation (screen display ,
automatic compensation once every 10 seconds) or manual

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compensation (screen display ) for cold junction temperature;
or select to close cold junction compensation. Whether to open
the cold junction compensation is up to the user himself (Refer
to Chapter IV "Setting Function").
Use of Voltage Output Function
1. Turn the knob switch to yellow " " position or " "
position;
2. Insert the black probe into "COM" plughole and red probe
into "OUTPUT" plughole;
3. Connect the probes to the input end of user's meter;
4. Press the button to select the output setting position; press
the button to change the value of setting position,
which can increase or decrease automatically. Keep pressing
the button, and the value can be changed consecutively after
1 second.
Use of Thermocouple Output Function
1. Turn the knob switch to yellow " " position; press the
button to select the corresponding scale division of
thermocouple (TC);
2. Insert the black probe into "COM" plughole and red probe
into "OUTPUT" plughole;
3. Connect the probes to the input end of user's meter
4. Press the button to select the output setting position;
press the button to change the value of setting position,
which can increase or decrease automatically. Keep pressing
the button, and the value can be changed consecutively after
1 second.
The main display area displays the temperature setting
value, and the auxiliary display area displays the cold junction
temperature value. Users can select automatic compensation
(screen display , automatic compensation once every 10
seconds) or manual compensation (screen display ) for cold
junction temperature; or select to close cold junction
compensation. Whether to open the cold junction compensation
is up to the user himself (Refer to Chapter IV "Setting
Function").
Use of Current Output Function
This meter provides two output modes:
SOURCE mode: Current is provided from the meter;

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SIMULATE mode (analog): The meter absorbs the current
from the external voltage source.
Constant Current Output (SOURCE Mode)
1. Turn the knob switch to the " " position and the
output is set as 0mA;
2. Insert the black probe into "COM" plughole and red probe
into "OUTPUT" plughole;
3. Connect the lead wire to the circuit to be measured;
4. Press the button to select the output setting position;
press the button to change the value of setting
position, which increase or decrease automatically. Keep
pressing the button, and the value can be changed
consecutively after 1 second.
Constant Current Output (SIMULATE Mode)
SIMULATE (analog) mode refers to simulation of a set of
current circuit transmitters by using the meter. When the external
DC voltage (5 to 28V) and the measured current circuit are in
series, SIMULATE mode should be selected.
Warning
Before connecting test leads to current circuit, set the knob
switch in some position of mA output first. Otherwise, the low
impedance from other positions of the knob switch may occur in
the circuit, resulting in the current up to 35mA flowing in the
circuit.
Apply polarity of voltage according to the diagram and do not
reverse the voltage.
1. Turn the knob switch to the " " position and the
output is set as 0mA;
2. Insert the black probe into "COM" plughole and red probe
into "OUTPUT" plughole;
3. Connect the lead wire to the circuit to be measured;
4. Press the button to select the output setting position;
press the button to change the value of setting position,
which can increase or decrease automatically. Keep pressing
the button, and the value can be changed consecutively after
1 second.

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Figure 5
Manual Step Output
Under 10V voltage and current output, press the button
to select 25% or 100% manual step output function in turn,
the screen shows: .
Press the button to increase or decrease the voltage or
current by 25% step or 100% step.
Different voltage and current span can be selected through
this function. (Refer to Chapter IV "Setting Function")
Voltage stepping
Output value
0~10V 1~5V
0.0% 0.00V 1.00V
25.0% 2.50V 2.00V
50.0% 5.00V 3.00V
75.0% 7.50V 4.00V
100.0% 10.00V 5.00V
Current stepping
Output value
4~20mA 0~20mA
0.0% 4.00mA 0.00mA
25.0% 8.00mA 5.00mA
50.0% 12.00mA 10.00mA
75.0% 16.00mA 15.00mA

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100.0% 20.00mA 20.00mA
Automatic Waveform Output
Under 10V voltage and current output, press the button
to select the automatic waveform output function with the screen
display: , and at the same time display the default output set
value and output the corresponding signal.
Press the button to start or stop automatic waveform
output. If automatic waveform output is started, the screen
displays the " " character; if the automatic waveform output
is stopped, the output will remain at the current value.
Different voltage and current span can be selected through
this function. (Refer to Chapter IV "Setting Function")
Chapter IV
Setting Function
To enter the meter setup, press the button under the
meter shutdown status, and then turn the knob switch to any
non-OFF position. In the setup mode, the screen's auxiliary
display area displays the settings, and the main display area
shows the factory default values. Press the button to change
the settings; press the button continuously to save the settings
(the main display area shows , indicating that this setting
has been saved). When the setup is completed, turn off the
machine.
Settings Function Default
Values
Automatic
shutdown
ON or OFF. Press the
button to select. ON
Automatic
ally switch
off back
light
ON or OFF. Press the
button to select. ON
Automatic
ally switch
off
flash
ON or OFF. Press the
button to select. ON

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light
Current
span
4-20 or 0-20. Press the
button to select. 4-20
Voltage
span
0-10 or 1-05. Press the
button to select. 0-10
Temperatu
re unit
℃ or ℉ . Press the
button to select. ℃
Cold
junction
compensat
ion of
thermocou
ple
ON or OFF. Press the
button to select. ON
Cold-junct
ion
compensat
ion method
Automatic ( ) or
manual operation ( ).
Press the button to
select.
Temperatu
re on the
manual
-10.0℃~50.0℃
(0.0℉~122.0℉). Press
the button
for the
23.0
cold
junction
setting position; press the
button to change the
setting position value.
Return to
the factory
default
value
Press the button
continuously, and the
main display area
displays ,
indicating that it has
returned to the factory
default value.
Chapter V
General Maintenance
Clean the meter enclosure on a regular basis with a damp
cloth and mild detergent. Do not use abrasives or solvents.
If the battery isn't used for a long time, it shall be taken out.
Dirt or wet air on the plughole can affect the reading.
Please follow the following steps to clean the connection
port:

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1. Turn off the meter power and dismantle all test leads;
2. Clean the dirt on the connection port;
3. Clean each connection port with a new cotton swab
dipped in alcohol.
Replace Battery
This meter uses three 1.5V (LR03/AAA) alkaline batteries.
Please follow the following steps to replace the battery:
1. Turn off the instrument power supply and disconnect
all test lines;
2. Use a flat screwdriver to turn the screw on the battery
cover counterclockwise for 1/4 turn to remove the
battery cover;
3. Replace 3 new batteries and pay attention to the
positive and negative polarity of the batteries;
4. Install the battery cover and turn the screw on the
battery cover clockwise for 1/4 turn to lock the battery
cover.

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Chapter VI
Technical Specification
General Characteristics
Display refresh 2~3 times/second
Overload protection 50mA/30V
Working temperature and humidity range 0~40 ºC and a relative humidity below 85% (no condensation)
Storage temperature and humidity range -20 ºC
～ 60 ºC and a relative humidity below 90% (no condensation)
Precision ensures the temperature and
humidity range 23±5ºC and a relative humidity below 75% (no condensation)
Temperature coefficient 0.1 × basic precision/℃(temperature range <18 ℃or >28 ℃)
Ambient conditions for use Indoor and outdoor use (not waterproof), with an elevation of 0~2000 m
Outrange display OL
Battery kind Three 1.5 V (LR03/AAA) alkaline batteries
Power consumption When alkaline battery is used
Loop current measurement and DC current output (SOURCE) 20mA (a

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load of 1000Ω): approx. 1000mVA
Other work function: approx. 300mVA
Low battery Display battery sign
Automatic shutdown No operation for about 15 min by default
Preheating time 10 min
Close the meter enclosure for calibration No need for internal adjustment
Size 151
（ L ） ×75 （ W ） ×42 （ D ） mm
Weight Approx. 230 g
Calibration cycle One year
Detailed Precision Index
The accuracy is determined within one year after calibration when the operating temperature is 23 + 5 ºC, and the relative
humidity is 75%.
The precision range can be marked as: ± ([% of the reading]+ count) (Note: "count" represents the increased or decreased
number of the minimum effective digit).
Detailed Precision Index of Measurement

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Measurement
Function Range Measure Range Resolution Accuracy Notes
DC voltage
100mV -10.0mV ～ 110.0mV 100uV
0.2%+4 • Input impedance: 30V: 300kΩ(nominal value)
mV:>1MΩ(nominal value)
• Common mode rejection: 50Hz or 60Hz >80dB
• Series mode rejection: 50Hz or 60Hz > 40dB
• Overvoltage protection:30V (peak to peak value)
30V -5.00V
～ 30.00V 10mV 0.2%+4
DC current 20mA 0.00mA ～ 22.00mA 0.01mA 0.2%+4
• Overload protection: 50mA/30V
• Load voltage: approx. 18mV/mA
Thermocouple
R 0°C ～ 1760°C
1°C 0.2%+4
• Thermocouple measurement adopts ITS-90
thermometric scale,whose precision does not
include error of the cold junction compensation,
and the impact of thermoelectrical potential
S 0°C
～ 1760°C
B 400°C
～ 1820 °C
K -200°C
～ 1370°C
E -200°C
～ 1000°C
J -200°C
～ 1200°C

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T -200°C
～ 400°C
N -200°C
～ 1300 °C
Detailed Precision Index of Output
Output Function Range Output Setting Range Resolution Accuracy Notes
DC voltage
100mV 0.0mV ～ 110.0mV 100uV 0.2%+4 • Maximum output current 1mA
10V 0.00V
～ 11.00V 10mV 0.2%+4 • Maximum output current 5 mA (<10V)
DC current 20mA 0.00mA
～ 22.00mA 0.01mA
0.2%+4
• 20mA maximum load: 1kΩ
Analog transmitter
SIMULATE
-20mA 0.00mA
～ -22.00mA 0.01mA
• External power supply: 5 ～ 28V
• 20mA maximum load: 1kΩ
Loop power
supply LOOP 24V ±10% • Maximum output current 25mA
Thermocouple
R 0°C
～ 1760°C
1°C 0.2%+4 • Thermocouple measurement adopts
ITS-90 thermometric scale,whose
precision does not include error of the
S 0°C
～ 1760 °C