Long-Term Measurement Of Hvac With - TESTO 454 Getting Started

6.4
Long-term measurement of HVAC with databus
cntroller
6.4.1 Requirements
· PC and logger are connected to each other.
· The HVAC probe is connected.
· The PC is switched on, software has been started.
· The bus has been initialised.
6.4.2 Programming
1 Select Instrument menu -> Device control.
- Device control menu with Instrument register appears.
Instrument
:
Information on the logger, such as serial number, software version and rechargeable
battery capacity, number of protocols in the memory and the amount of free space avai-
lable.
2 Select second register card
New l l ocation
3 Insert name in box
The data is then easier to allocate.
· Additional text on the location, giving a more detailed description of the
measurement, can be entered at
4 Enter stop and start criteria.
Starting criteria:
· Date/Time
· PC start, manual
By activating the start button in this menu.
· Trigger
· Channel trigger:
Program starts once a specific limit is reached or exited.
Stopping criteria:
· Date/Time
· No. of values
· Until memory is full
· Wrap-around memory:
Once the last storage space has been taken, the first is written over once again
and the memory starts filling up again.
· Trigger
5 Enter measuring cycle
Determines in which intervals a new reading is accepted. The smallest possible mea-
suring cycle depends on the number and type of probes connected.
Data r r eduction
· In the case of
similar data is substituted by a representative value.
6 Save the measuring program with
7 End the program with
- The protocol appears under the selected location.
Program
.
.
Properties
data is only saved if there are significant changes,
Apply
.
Stop
6. Measurement example 53
.