CEM DT-25 Operating Instructions Manual

••Operation of the Energy Monitor is only pemitted in interior spaces

and dry environments,Usage in the open air is strictly forbidden.
Always observe the declarations on the identification labels of
connected power loads.

Another use than the one described above leads to damages to the
product and is also associated with danger s like short c ircuit ,fire,
electric shock,etx. The entrie product may not be converted or
modified. The safety instructions must be strictly observed.

We will not assume any liability for damages to items or persons
caused by improper handling or non-com-pliance with the safety
notices. Any warranty claim will become null and void in such cased.

It must be observed that the conductive ground wire is not broken
as this can plse lethal danger in the event of a malfunction.

This device is not a toy and does not belong in the hands of children.

Only connect the Energy Monitor to certified protected comtact outlets
230V AC/50Hz (10/16A)with a ground wire.

The connected load may mot exceed 3000W(13A).

The recommended operation temperature is between +10 and +40°C.
High temperatures, especially during measurement of large power
loads, lead to danger of overheating and can thereby permanently
destory the Energy Monitor.

3 Safety instructions

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Avoid operating under adverse environmental temperatures and near
flammable gased, vapours and dust.

For reasons of safety, never allowthe device to be operated whenwet
or in a damp environment.

When cleaning or servicing, the device must be disconnected from
everysource of operation volatge.

Condesers in the device may still be charged, even if the device was
disconnected from all voltage sources.

In schools, training facilties, hobby and self-help workshops,pualified
personnel must supervise the operation of measurement units.

In commercial institutions, make sure you observe the accident
prevention regulations of the commercial trade organization for electric
installations.

Do not insert needles, metals or any oteh objects into the device.

If it has been ascertained that safe operation is no longer possible,
take the device out of opertation and secure it against accidental
reactivation. It can be ascertained that safe operation is no longer
possible if the devive shows visible damage, no longer works correctly,
has been stored for a long period under unfavourable conditons or
has been placed under heavy stesses in transport.

If the long time does not use, please takethe Energy Monitor internal
batteries preservation in the dry place.

B

TIME

SET/CLR Hour

Hour Minute UP

DOWEN

SET/CLR

Hour Minute

C

SET/CLR

SET/CLR

SET/CLR

SET/CLR

SET/CLR

SET/CLR

Display current time setting
Press “ ” button into current time mode.
Press “ ” button int o setting mode, “ ” or “Minute”
digital will flash display.
When “ ” or “ ” digital will flash display, press “ ” or
“ ” button setting time.
Again press “ ” button the Energy Monitor into normal
display current time, when “ ” or “ ”digital will Static display.

Display the electricity consumption of electric energy billing explorer
and the setting of time and billing.
Press MODE button between LCD display on and hour.
Press MODE button between LCD display on and kwh, that mean
the total power consumption; at this time press the key
will clear all data
Press MODE button between LCD display Time, mean the time of
current total power consumption; at this time press the
button to set the starting point of electricity time
Press MODE button between LCD display display T1 and Time,
mean the start time of T1, now pressthe button to set the
starting point of T1 electricity time
Press MODE button between LCD display display off, T1 and Time,
express the end of time of T1, now press the keyto set the
starting point of T2 electricity time.
Press MODE button between LCD display display on, T 1 and kwh,
mean the electricity consumption of period T1, now press the

key to set the Price of Electricity of T1
Press MODE button LCD between displayon, T2, that meanspower
consumption of T2, now press the button to set the
electricity price of T2 time

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Press MODE button between and following LCD screen display
kwh and Day, show that according to theunit price you setting you
can buget total cost of electricity by day.
Press MODE button between and following LCD screen display
kwh and Month, show that according to the unit price you setting
you can buget total cost of electricity by month.
Press MODE button between and following LCD screen display
kwh and Year, show that according to theunit price you setting you
can buget total cost of electricity by year.
The specific set ways as follows:

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The total electricity consumption in the
medium screen(hour). The total cost of
electricity under Screen(Total)

The total electricity consumption in the
medium screen(kwh), the total cost of
electricity under Screen(Total)

The current time in the mediun screen
(Time), the total cost of electricity under
Screen(Total)

The strating time of T1 in medium screen
(on), the total cost of electricity under
Screen(Total)

The ending time of T1 in medium screen
(off), the total cost of electricity under
Screen(Total)

Press SET clear 0

Press SET into time setting,
press UP/DOWN adjust, press
SET affirm

Press SET into the strating time
of T1’s setting, press UP/DOWN
adjust, press SET affirm

Press SET into the ending time
of T1’s setting, press UP/DOWN
adjust, press SET affirm

Press MODE

Press MODE

Press MODE

Press MODE

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These operating instructions belong to this product.They contain
important imformation for operation and handling. They must be
observed, even if the product is passed on to a third party. In this
regard,keep these operating instructions for future reference.

1 Introduction

2 Operation

With the Energy Monitor, you have acpuired a measurement device
created according to the most current state of the art. You are now
able to determine power costs of your power loads in the easiest way.
The Energy Monitor meets with the safety and corresponds with the
repuirements of valid European and nationa guidelines.The conformity
was proven a nd the correspondi ng declarations are available from
the manufacturer.
In order to maintain this condition and ensure safe operation, you as
the user have to observe this operating manual.

The measurement range of the energy Monitor extends from 50 to

3000W. If values fall below or exceed these limit values,exact
measurements are no longer possible.Also the device could be
overloaded and thereby destroyed.

The Energy Monitor has been developed for monitoring and measuring
electrical loads.
Although the Energy Monitor is very accurat e, it is not officially cer tified
for usage by power companies and users for measuring power
expenditures.

The Energy Monitor is only certified for operation at 230V AC.The
maximum power of any conne cted load may not exceed 3000W
(max,current 13A).

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Operating Instructions
Energy Monitor

4 Front Panel Description

Note:

5

1 LCD display
2 V(AC Voltage), A(AC Current),

W (Watt) Select button
3 MODE/Power on button
4 230V AC supply power

indication
5 Load power plug
6 SET/CLR(Reset)/exit button
7 TIME display button
8 Set DOWN button
9 Set UP button

Tilt battery compartment

are on rear of unit.

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1.The above figure shows the actural voltage, current, active power
values of current metrical.(as follows)

2.Middle figure show the time of the electric energy meter billing
(current time, T1, T2’s time) and general energy consumption
(as follows)

3.The following figures are used to display current total electricity
billing and price setting, and can be budgeted the total cost by every
day, every month, year.(asfollows)

LCD Display

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Monitoring of voltage, current, active power display Max value recording
of voltage, current, active power.
Display of used energy and accrued power costs.
Cost forecast.

Before you connect the Energy Monitor to an outlet or power load,
the desired power tariff must be set.

: when has not turned on the AC230V electric power supply,
presses MODE key to be possible starting to carry on the function
establishment.

Display of supply voltage, load current, load active power values.
Immediately after the Energy Monitor
is plugged into an outlet, the supply
voltage,load active power and present
current consumption of the connected
loads is displayed in the LCD.
Press the “V,A,W”button select to
display of supply voltage, load current,
load active power values.
When supply voltage>250V AC; Load
current>13A; Load active power>3000W,
LCD will display “OL” and flash alarm.

Properties

7 Connection, operation settings

Note

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The total electricity of T1 in medium screen
(kwh), The total electricity consumption
in the under screen(Total)

Press SET into the cost of T1’s
setting(Price), press UP/DOWN
adjust, press SET affirm

The total electricity of T2 in medium
screen(kwh), the total cost of electricity
under Screen(Total)

Press SET into the cost of T2’s
setting(Price), press UP/DOWN
adjust, press SET affirm

Daily Budget of current total power
consumptionat current power in medium
screen, daily budget of current total cost
of electricity under screen

monthly Budget of current total power
consumptionat current power in medium
screen, monthly budget of current total
cost of electricity under screen

yearly Budget of current total power
consumptionat current power in medium
screen, yearly budget of current total
cost of electricity under screen

8 Replacing the battery

AAA

AAA

9 Additional notes

When the LCD loses contrast, immediately replace the battery of the
device. The Energy Monitor requires two 1.5V “ ” batteries.
For replacing the battery,proceed as follows:

Turn the screw of the battery compartment and remove the battery
compartment.
Remove the used batterty from the Energy Monitor and replace it
with two new 1.5V “ ” batteries. Observe correct polarity when
inserting the battery.
Replace the battery compartment cover and refasten the screw.

The connected loads should be operated as normal when producing
the cost forecast if an exact cost forecast is to be made per week/
month/year for a power load, we recommend leaving the energy
monitor connected to the load for at least one day. The energy monitor
can thereby calculate an average power/load and accrued costs
more accurately. The longer the Energy Monitor is connected, the
more accurate is the cost forecast.

The power supply on a power net is never constant and varies from
place to place. For example, a voltage fluctuation of 1% per second
for a calculated cost forecast over 5 minutes will never be as accurate
as a cost forecast taken 3 hours.

Some devices use more current than others immediately after switching
on. The current usage decreases the longer the device is use (warm

-up phase).

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Technical data
Operating voltage

Max. connected power
Max. current
Input/Output
Overrun display

Tolerance

Working temperature
Battery type
Auto power off

Tariff setting range
Power load display
Voltage measurement
Current measurement

10.Maintenance

Regularly inspect the Energy Monitor for damage.
For cleaning the device and LCD, only use a dry, soft cloth. Do not
use any cleaning solutions.
Never immerse the device in water.
Maintenance or repairs may only be performed by a technician
familiar with associated regulations.

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230V AC/50Hz alternating
voltage(AC)
3000W(3kW)
13A

Via protected contact plug/outlet
Blinking display at approx. 3000W
Caution More than 3000W will
destroy the device.
±1%±1W typical(max. ±2%
and ±2W for Measurements up

to 2500W; max, ±4% for
measurements over 2500W)
10 to 40°C
two “1.5V (AAA)” batteries.
When has not turned on 230V
AC power supply, the Energy

Monitor appliance automatic
close-down's time probably is
5 seconds

0.01 to 99.99
1 to 3000 kwh
1V

0.01A

Active and apparent power
Energy(kwh)and costs(Total)
Dimensions(LxWxH)
Weight

1W

0.01
approx.140×72×43mm
214g

11..Liability exclusion
Manufacturers and distributotors take noresponsibility for incorrect
measurement values or the results of such values.
This product may not be used for medical pur poses or published
information.
This desice has been developed as an indicator for current usage
and energy costs. Despite the high accuracy of the device, it is not
to be used official calculation between power providers and users.
The technical data of the device can be changed without prior notice.
The product is not a toy-keep it away from children.
These instruction or declarations may only be reproduced with the
permission of the manufacturer

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Press MODE

Press MODE

Press MODE

Press MODE

Press MODE

Rev.090630