Precision Measuring Instruments
P700, P705, P710, P715, P750,
P755, P770, P755-LOG, P770-LOG
Operation Manual
SERIE
DOSTMANN electronic
P700
Retractable stand
Mounting device for
probe handle
Measuring port 1
Measuring port 2
(P705, P715, P755, P770,
P755-LOG, P770-LOG)
USB PC interface port
Big
LC-Display
Keyboard
2
Unit diagram
3
Operation Manual
Summary
1. Handling
1.1. General advices
1.2. Setting to work
1.3. Switch on/off
1.4. Menu
1.4.1. Measuring unit switching (UNIT)
1.4.2. Probe selection (Prob)
1.4.3. Difference temperature (Lin2)
1.4.4. Calibration (CAL)
1.4.4.1. Calibration
combination probe
(temperature/humidity)
1.4.5. Channel activation (Chnl)
1.4.6. Enter Area for volume flow (ArEA)
1.4.7. Memory setup (Lo6)
1.5. Recalling memory data
(HOLD/MAX/MIN/AVG)
1.6. Measuring rate (FAST-modus)
1.7. AUTO-OFF-function
1.8. Special-functions
1.8.1 Ohm/microvolt/volt/hertz display
1.8.2 Zero adjustment
1.8.3 Deactivation of the 2nd channel (toggle)
2. Power supply / Changing the battery
3. Error codes / troubleshooting
4. Technical data
5. Interface protocol
6. Connector layout
7. Data of probe-calibration
8. Guarantee
4
1.1 General advice
• For cleaning the instrument please do not use abrasive cleaner but a dry or wet piece of cloth.
• Please store the measuring instrument in a dry and
clean place.
• Avoid any force like shocks or pressure to the instrument.
• Do not use force to connect the probe or interface
plugs in. The interface plug is different from the
probe plug.
• If no sensor is connected to the instrument while
switching on “open“ shows on the display (Please
refer to chapter error codes/troubleshooting).
• A retractable stand on the back of the instrument
allows it to be used as a bench top instrument.
1.2 Operation
Before switching on the instrument, connect the
probe/s to the instrument and insert the battery
(Please refer to chapter 6. Power supply / battery
changing). A number on the instrument's housing
marks each port.
1.3 Switching on and off
By operating the ON/OFF-key the instrument switched
on or off. After switching on the instrument indicates a
full segment test for 1,5 sec., afterwards the instrument shows the calibration-code and the adjusted
measurement category for channel 1. (Only 2-channel
instruments: After additionally 1,5 sec. the instrument
shows the calibration-code and the adjusted measurement category for channel 2.) Then it starts operating
in measurement mode indicating the actual measurement value (for example: temperature). All instruments
display the measurement value of channel 1 on the top
display line (big display line). Directly below you will
see the trending bargraph. The second channel of our
2-channel instruments you will see on the bottom line
(small display line).
Fig 1:
Example of channel information after switching on.:
channel 1
Line 1: [oFF P = calibration code of channel 1
according to standard linearization (DIN), probe selection of channel 1 = Pt100.
channel 2
Line 2: [oFF P = calibration code of channel 2
according to standard linearization (DIN), probe selection of channel 2 = Pt100.
1. Handling
1
2
5
Note: On all instruments you can select the measurement category (chapter 1.4.2. Prob) according to the
model version. Instruments that are delivered only with
one probe the correct measurement category is preset.
In other case please check chapter 1.4.2. (Prob) for the
correct set-up.
1.4 Menu
The adjustments of the instruments like the measurement value, calibration of Up and down keys probes,
deactivation of channels and so on are resulting from
the structure of the menu. You will reach into the main
menu by pushing [ENTER/MENUE]. With the up and
down keys [] you can choose your required menu
item. Push [ESC] to be back in the measuring mode.
Menu structure
1.4.1 Measuring unit switching °C and °F
respective %rH, td or g/m
3
/ [Unit]
Unit = Measuring unit
Measuring unit temperature
(°C=Celsius, °F=Fahrenheit)
Measuring unit humidity
(%rH=relative humidity, td=dew point, g/m
3
=absolute
humidity)
Important!
Unit
°C
°F
m/s
%rh
g/m
3
°C td
°F td
Pa
hPa
Prob Lin2 CAL Chnl ArEA Lo6
P
J
K
L
N
R
S
T
RH
D
Pr
H
T1-T2 oFF
oP1
oP2
OFF c OFF
ON mON
m
3
/s
❶ up and down keys
❷ key [ESC]
❸ key
[ENTER/MENUE]
❶
❷
❸
6
To change the measuring unit push [ENTER/MENUE].
Use the up and down keys [] to select Unit. Push
again [ENTER/MENUE]. On the left corner of the display appears a small 1, which indicates the selected
channel. For changing the channel use the up and
down keys [
] Push [ENTER/MENUE] to confirm.
On the right corner of the display appears °C or °F, or
%rH, td or gm
3
(depending on the selected probe).
Use the up and down keys [
] again to adjust the
requested measuring unit and push [ENTER/MENUE] to
confirm. Push [ESC] to be back in the measuring mode.
1.4.2 Probe selection / [Prob]
Push [ENTER/MENUE] to change a probe. Use the up
and down keys [
] to select Prob. Push [ENTER/
MENUE] to confirm.
On the left corner of the display appears a small 1,
which indicates the selected channel. For changing the
channel use the up and down keys [
]. Push again
[ENTER/MENUE] to confirm. On the right corner of the
display appears the active probe. Use the up and down
keys [
] to change the probe. P
ush [ENTER/MENUE]
to confirm the requested probe.
Push [ESC] to be back
in the measuring mode.
Measurement Probe selection LC-Display Suitable for
(Prob) these types
of measuring
instruments:
Temperature Pt100 (RTD) P700/P705/
P750/P755/P770
P755-LOG/P770-LOG
Temperature Fe-CuNi Type J for all P700-
instruments
Temperature NiCr-Ni Type K for all P700-
instruments
Temperature Fe-CuNi Type L for all P700-
instruments
Temperature NiCrSi-NiSi Type N for all P700-
instruments
Temperature Pt13Rh-Pt Type R P700/P705/
P750/P755/P770
P755-LOG/P770-LOG
Temperature Pt10Rh-Pt Type S P700/P705/
P750/P755/P770
P755-LOG/P770-LOG
Unit
MENUE
Prob Lin2 CAL PrEn Chnl ArEA Lo6
Unit
MENUE
Prob Lin2 CAL PrEn Chnl ArEA Lo6
7
Measurement Probe selection LC-Display Suitable for
(Prob) these types
of measuring
instruments:
Temperature Cu-CuNi Type T for all P700-
instruments
Humidity %rH P750/P755/P770
P755-LOG/P770-LOG
Flow m/s P750/P755/P770
P755-LOG/P770-LOG
Pressure Pa P750/P755/P770
P755-LOG/P770-LOG
Thermal flow m/s P750/P755/P770
probe P755-LOG/P770-LOG
Note: Please check the probe selection to be sure that
the correct probe is entered. If a measurement value is
changed with the ENTER-key at the menu Prob, the
standard calibration will be automatically used.
Indications for the combination probes
(temperature and humidity):
Please adjust relatively humidity as measurement
value for the channel on which the combination probe
is plugged. If you want that the measured temperature
of the plugged combination probe is shown as well,
you have to deactivate the channel on which no probe
is plugged on (see chapter 1.4.6./Chnl).
1.4.3 Difference temperature
(only 2-channel instruments) / [Lin2]
To display the difference temperature push
[ENTER/MENUE]. Use the up and down keys [
] to
select Lin2. Push again [ENTER/MENUE]. On the right
corner of the display appears a T
1-T2
. Use the up and
down keys [
] to adjust the requested selection.
Push [ENTER/MENUE] to confirm. Push [ESC] to be
back in the measuring mode.
Note: Both channel have to be activated for showing
the difference temperature.
1.4.4 Calibration function / [CAL]
Despite high quality manufacturing techniques, each
probe is slightly different from specified standards. To
eliminate inaccuracies caused by exchanging or ageing
of probes, the instrument offer easy calibration functions which guarantee that the system accuracy is
always as good as if the instrument was specifically
calibrated to the individual probes in our laboratory.
Important!
Important!
Important!
Unit
MENUE
Prob Lin2 CAL PrEn Chnl ArEA Lo6
8
The instruments offer three calibration options:
1) [OFF]:Standard characteristic curve (e.g. Pt100resistance according DIN IEC 60751)
2) [OP1]:Calibration by code (2 x four digit code) is
equivalent to a 2-point calibration
The code is marked clearly by a label on each standard probe.
3) [OP2]:Calibration by physical standard references
(1-point, 2-point or 3-point calibration)
CAL = calibration
Push [ENTER/MENUE] to calibrate the instrument with
sensor. Use the up and down keys
[]
to select CAL.
Push again [ENTER/MENUE]. On the left corner of the
display appears a small 1, which indicates the selected
channel. For changing the channel use the up and down
keys
[].
Push [ENTER/MENUE] to confirm.
Use the up and down keys [] to select the requested calibration option. Push [ENTER/MENUE] to
confirm.
Standard linearization
according DIN IEC 60751 / [oFF
Use the up and down keys [
] to select [oFF. Push
[ENTER/MENUE] to confirm.
Push [ESC] to be back in the measuring mode.
Calibration by code / oP1
Use the up and down keys [
] to select oP1. Push
[ENTER/MENUE] to confirm.
On the bottom of the display appears a very small 1,
after this number a four-digit number (Hex-Code/0..F) is
displayed. For changing the number use the up key
[
]. For stepping to the next number use the down key
[
]. If the requested number is complete then push
[ENTER/MENUE] to confirm. Now on the bottom of the
display appears a very small 2, after this number a second four-digit number is displayed. For changing the
number please follow the manual as before. Push [ESC]
to be back in the measuring mode.
Note: After confirming oP1 by pushing [ENTER/MENUE]
the function oP1 (calibration by code) is activated, even
though you leave the menu by pressing [ESC].
Important!
CAL
oFF oP1 oP2
Unit
MENUE
Prob Lin2 CAL PrEn Chnl ArEA Lo6
9
Display-indication with active calibration code (OP1):
The CAL -segment and the small 1 on the left indicates
to the user that oP1 is activated.
Calibration by physical standard references / oP2
Use the up and down keys [
] to select oP2. Push
[ENTER/MENUE] to confirm.
On the bottom of the display appears 1 P. For changing
between a 1-Point [1 P], 2-Point [2 P] or 3-Point [3 P] calibration use the up and down keys [
].
Example of a 1-Point calibration:
Push [ENTER/MENUE] to confirm. On the display
appears Go. After the displayed measuring value is
stabile push [ENTER/MENUE]. App. 2 seconds later in
the first display line appears P1 (measuring value 1); in
the second display line appears dP. (standing for decimal point).
Use the up and down keys [
] to select the number
of digits after decimal point:
dP. = two decimal digits
dP . = one decimal digit
(decimal point is jumping one digit to the right)
Push [ENTER/MENUE] to confirm. On the second line of
the display appears Si -. Use the up and down keys
[
] to select the requested sign.
Si = reference standard shows
a negative measuring value (below 0,00C°)
Si = reference standard shows
a positive measuring value (above 0,00C°)
Push [ENTER/MENUE] to confirm. On the second line of
the display appears Fd 0.
Use the up and down keys [
] to select the re-
quested range:
Fd 0 = below 100,00°C
Fd 1 = above 100,00°C
Push [ENTER/MENUE] to confirm. On the display
appears 00.00. For changing the value use the up key
[
] . For stepping to the next number use the down
key [
]. If the requested value is complete then push
[ENTER/MENUE] to confirm.
Push [ESC] to be back in the measuring mode.
Note: A break of the physical calibration cannot
be done by the [ESC]-button. Switching off the instrument can only do a break of the physical calibration.
Important!
oP2
1 P 2 P 3 P
10
Display-indication with active calibration code (OP2):
The CAL-segment and the small 2 on the left indicates
to the user that oP2 is activated.
1.4.4.1 Calibration function of the combination
probe (humidity/temperature) [CAL]
Each humidity probe is a combination probe.
That means that beside the humidity sensor these
probes also contain a temperature sensor. Both
measurement values are plugged in the same
channel over one probe. Before the calibrating of both
measurement values (humidity and temperature)
the calibrated measurement value must be adjusted at
the menu item Prob (Probe selection 1.4.2).
The instruments offer three calibration options:
1) [OFF]:Standard characteristic curve (no specific
probes correction will be carried out)
2) [OP1]:Calibration by code (2 x four digit code) is
equivalent to a 2-point calibration
The code is marked clearly by a label on each standard probe/rH = humidity & P°C = temperature.
3) [OP2]:Calibration by physical standard references (1-
point, 2-point or 3-point calibration) is only for the
measurement value rH humidity possible
CAL = calibration
Push [ENTER/MENUE] to calibrate the instrument with
sensor. Use the up and down keys [
] to
select CAL. Push again [ENTER/MENUE]. On the
left corner of the display appears a small 1, which indicates the selected channel. For changing the channel
use the up and down keys [
] . Push [ENTER/
MENUE] to confirm.
With the up and down keys [
] you can now choose
between rH for calibration of humidity and P°C for calibration of temperature.
Use the up and down keys [
] to select the request-
ed calibration option. Push [ENTER/MENUE] to confirm.
CAL
rH P °C
Unit
MENUE
Prob Lin2 CAL PrEn Chnl ArEA Lo6
11
Standard linearization / [oFF
Use the up and down keys [
] to select [oFF. Push
[ENTER/MENUE] to confirm.
Calibration by code / oP1
Use the up and down keys [
] to select oP1. Push
[ENTER/MENUE] to confirm the desired setting. On the
bottom of the display a small 1 appears, after this
number a four-digit number (Hex-Code /0..F) is displayed. For changing the number use the up key [
] .
For stepping to the next number use the key down [
]
. If the requested number is complete then push
[ENTER/MENUE] to confirm. Now on the bottom of
the display appears a small 2 and after this number a
second four-digit number is displayed. For changing
the number please follow the manual as before. Push
[ESC] to be back in the measuring mode.
1.4.5 Channel activation
(only 2-channel instruments) / [Chnl]
Chnl = channel
To activate or deactivate a measuring channel
push [ENTER/MENUE]. Use the up and down keys
[
] to select Chnl. Push again [ENTER/MENUE].
On the left corner of the display appears a small 1,
which indicates the selected channel. For changing
the channel use the up and down keys [
]. Push
[ENTER/MENUE] to confirm. Use the up and down
keys [
] again to activate on or deactivate off
the requested measuring channel and push [ENTER/
MENUE] to confirm. Push [ESC] to be back in the
measuring mode.
Short-Cut: Press 2 seconds the HOLD/MAX/MINButton for activate or deactivate channel 2.
Note: As a minimum one channel is active!
1.4.6 Enter Area for volume flow [ArEA]
To enter the area dimensions is only able with instruments for measuring airflow.
Important!
CAL
oFF oP1 oP2
Unit
MENUE
Prob Lin2 CAL PrEn Chnl ArEA Lo6
12
Push [ENTER/MENUE] and use the up and down keys
[
] to select ArEA. Push [ENTER/MENUE] to con-
firm. On the left corner of the display appears a small
1, which indicates the selected channel. For changing
the channel use the up and down keys [
] . Push
[ENTER/MENUE] to confirm. Use the up and down keys
[
] to select the dimension unit:
c = Centimeter
2
m = Meter
2
Push [ENTER/MENUE] to confirm.
On the display bottom appears:
00.00
For changing the number use the up key [
] . For step-
ping to the next number use the key down [
]. If the
requested dimension is complete then push
[ENTER/MENUE] to confirm.
1.4.7 Memory Setup [Lo6]
Only instrument with extension –LOG (e.g. P755-LOG)
have got an internal memory.
Push [ENTER/MENUE] and use the up and down keys
[
] to select Lo6. Push [ENTER/MENUE] to confirm.
Use the up and down keys [
] again to start [on] or
Stop [off] the logger. Push [ENTER/ MENUE] to confirm.
Use the up and down keys [
] again to select
between automatic storage [Auto] or manually operated storage [SPot]. Push [ENTER/MENUE] to confirm].
Use the up and down keys [
] again to select
between to add on data [Add] and creating a new file
[nLo6]. Push [ENTER/ MENUE] to confirm. By selected
automatic storage at the end you have to select the
time interval:
1 S 1 second
5 S 5 seconds
10 S 10 seconds
20 S 20 seconds
30 S 30 seconds
1 M 1 minute
2 M 2 minutes
5 M 5 minutes
10 M 10 minutes
20 M 20 minutes
By selected manually operated storage you are able to
save the measurement by pressing ESC by each time.
Push [ENTER/MENUE] to confirm. Push [ESC] to be back
in the measuring mode. Manual storing [Spot]. Press the
key [ESC] to store manually the measuring values.
Unit
MENUE
Prob Lin2 CAL PrEn Chnl ArEA Lo6
13
1.5 Recalling the memory data
(HOLD MAX MIN AVE)
After pushing first time the key [HOLD MAX MIN AVE]
the actual value will be hold on the top display line (big
display). Pushing again the key [HOLD MAX MIN AVE],
the saved maximum-, minimum and average value will
be displayed in the bottom display line (small display).
Note for 2-channel instruments: First the MAX-MINAVE-values of channel 1 will be displayed – afterwards
the values of the channel 2 will be displayed. Is there
only one probe on a 2-channel instrument we suggest
to deactivate the channel without probe (menu Chnl).
Note:
During the recall of the memory data the extremes
(MAX MIN) and the average value (AVE) will not be
calculated or carried on.
Clearing the memory (MAX MIN AVE)
Press [CLEAR] key once to erase the stored maximum,
minimum and average from memory. On the display
appears Clr. – After erasing the memory the instrument automatically switches back to measuring mode
indicating the actual measured value again.
1.6 Measuring rate (FAST-mode)
Press [FAST/
]key once to change the measuring rate.
Now the measuring rate is app. 4 measurements per
second. Press [FAST/
] key again and the instrument
is back in the standard mode (1 measurement per sec.).
Note:
In the fast mode the battery consumption is three
times higher than in the standard mode.
1.7 AUTO-OFF-function
dAoF = Disable Auto-off
EAoF = Enable Auto-off
Press [ESC/AUTO-OFF] key once. On the display
appears EAoF. Now the instrument switches off auto-
matically after app. 30 minutes. Press [ESC/AUTO-OFF]
key again. On the display appears dAoF. Now the
Auto-Off-function is deactivated.
1.8 Special-functions
1.8.1 (Ohm//Micro volt/Volt/Hertz-display)
If you want to get the shown value displayed according
to the basic units you will have to push, when you
switch on, the keys FAST and ON/OFF at the same time
for approximately 3 seconds till the next basic unit
appears:
Important!
Important!
14
o = Ohm (Pt100)
H = Hertz (flow m/s)
u = Micro volt (thermocouples)
U = Volt (humidity)
1.8.2 Zero adjustment
A long press on the F1 button (approx. 3 s) enables you
to set the displayed value on 0. Before pressing the
button make sure that the actual value also amounts to
0 (no current/pressure at the probe).
1.8.3 Deactivation of the 2nd channel (toggle)
A long press on the HOLD button (approx. 3 s) enables
you to activate or deactivate the 2nd measuring
channel.
15
For the power supply of the instrument a 9 Volt dry battery is used. To exchange the battery switch of the
instrument and open the battery cover on the backside
of the instrument. Remove and disconnect the battery
from the instrument. Connect a new 9 V battery to the
plug and put the battery back into the instrument.
By showing the segment the instrument indicates, that the battery has to be exchanged. After
showing the the instrument allows app. 1 hour
of further measuring.
Attention:
When using a rechargeable battery, the slide switch
must set to “Akku” to charge the battery by the USB
interface. When using a standard battery (non rechargeable) the slide switch must set to “Batt” to prevent any damage to battery or instrument.
Waste disposal:
This product has been manufactured using high-grade
materials and components which can be recycled and
reused.
Never dispose of empty batteries and rechargeable
batteries in household waste.
As a consumer, you are legally required to take them to
your retail store or to appropriate collection sites
depending to national or local regulations in order to
protect the environment.
The symbols for the heavy metals contained are:
Cd=cadmium, Hg=mercury, Pb=lead
This instrument is labelled in accordance with the EU
Waste Electrical and Electronic Equipment Directive
(WEEE).
Please do not dispose of this instrument in household
waste. The user is obligated to take end-of-life devices
to a designated collection point for the disposal of
electrical and electronic equipment, in order to ensure
environmentally-compatible disposal.
2. Power supply
16
By displaying the following error codes the instrument
support the operation of the instrument.
Error Meaning
oPEn no probe
or wrong probe is connected
|
oLo
“too low“ – underflow of the
measuring range
|
oHi
„too high“ – exceeding of the
measuring range
|
Er1
temperature of the cold
junction above the measuring
range
|
Er2
temperature of the cold
junction above the measuring
range
E15 low battery – (battery is com-
pletely exhausted)
E19 low battery – (battery is com-
pletely exhausted)
E1d low battery – (battery is com-
pletely exhausted)
E16 time out / auto-off-function
E1o time out / auto-off-function
E1e time out / auto-off-function
E23 EE-prom destroyed or
EE-prom index is wrong
E25 EE-prom destroyed or
EE-prom index is wrong
E31 temperature of cold junction
out of range
3. Error Codes
Important!
17
P700 (1-channel) / P705 (2-channel)
Inputs 1/2 Pt100,
thermocouple:
type K, J, L, N, R, S, T,
Measuring range
Pt100 -200...+850 °C
Thermocouple according DIN (-200...1760°C)
Accuracy
Pt100 ±0,1 °C from -100 °C...+200 °C
0,1% remaining range
Thermocouple
R, S ±1.0 °C +0.1%
K, J, L, N, T ±0.2 °C from 0 °C...+200 °C
±0.5 °C to 1000 °C
±1.0°C remaining range
Resolution 0.1°C
Ex-mark –––
Battery life appr. 20 hours
Connectors DIN 8-pole
Allowable
operating temp. 0 °C ... +40 °C
Display 2-line LCD
Housing plastic
Dimensions 200 x 93 x 44 mm (LxWxH)
Weight 350 g
Power supply 9 V battery
4. Technical data
18
P710 (1-channel) / P715 (2-channel)
Inputs 1/2 thermocouple:
type K, J, L, N, R, S, T,
Measuring range
Pt100 –––
Thermocouple according DIN (-200...1760°C)
Accuracy
Pt100 –––
Thermocouple
R, S –––
K, J, L, N, T ±0.2 °C from 0 °C...+200 °C
±0.5 °C to 1000 °C
±1.0°C remaining range
Resolution 0.1°C
Ex-mark –––
Battery life appr. 20 hours
Connectors DIN 8-pole
Allowable
operating temp. 0 °C ... +40 °C
Display 2-line LCD
Housing plastic
Dimensions 200 x 93 x 44 mm (LxWxH)
Weight 350 g
Power supply 9 V battery
19
P750 (1-channel) / P755 (2-channel)
Inputs 1/2 Pt100,
thermocouple:
type K, J, L, N, R, S, T,
humidity, flow
resistance, voltage
Measuring range
Pt100 -200...+850 °C
Thermocouple according DIN (-200...1760°C)
Resistance 0 ... 400
Humidity 0 %...100 %rH
Flow 0 ... 40 m/s
Accuracy
Pt100 ±0.03°C from -50°C...+199.99°C
±0.05°C from -200°C...-50.01°C
otherwise 0.05%
Thermocouple
R, S ±1.0 °C +0.1%
K, J, L, N, T ±0.2 °C from 0 °C...+200 °C
±0.5 °C to 1000 °C
±1.0°C remaining range
Humidity ±1.5%rH
Flow 1% of end value
Resistance 0.5%
Resolution 0.0 1°C from -200 °C...+200 °C,
otherwise 0.1°C,
respectively 0.1%
Ex-mark –––
Battery life appr. 20 hours
Connectors DIN 8-pole
Allowable
operating temp. 0 °C ... +40 °C
Display 2-line LCD
Housing plastic
Dimensions 200 x 93 x 44 mm (LxWxH)
Weight 350 g
Power supply 9 V battery
20
P770 (2-channel)
Inputs 1/2 Pt100,
thermocouple:
type K, J, L, N, R, S, T,
humidity, flow
Measuring range
Pt100 -200...+850 °C
Thermocouple according DIN (-200...1760°C)
Resistance –––
Humidity 0 %...100 %rH
Flow 0 ... 40 m/s
Accuracy
Pt100 ±0.1 °C from -100 °C...+200 °C
otherwise 0.1%
Thermocouple
R, S ±1.0 °C +0.1%
K, J, L, N, T ±0.2 °C from 0 °C...+200 °C
±0.5 °C to 1000 °C
±1.0°C remaining range
Humidity ±1.5%rH
Flow 1% of end value
Resistance –––
Resolution 0.1°C, 0.1% and 0.1 m/s
Ex-mark –––
Battery life appr. 20 hours
Connectors DIN 8-pole
Allowable
operating temp. 0 °C ... +40 °C
Display 2-line LCD
Housing plastic
Dimensions 200 x 93 x 44 mm (LxWxH)
Weight 350 g
Power supply 9 V battery
21
P755-LOG (2-channel)
Inputs 1/2 Pt100,
thermocouple:
type K, J, L, N, R, S, T,
humidity, flow
resistance, voltage
Measuring range
Pt100 -200...+850 °C
Thermocouple according DIN (-200...1760°C)
Resistance 0 ... 400
Humidity 0 %...100 %rH
Flow 0 ... 40 m/s
Accuracy
Pt100 ±0.03°C from -50°C...+199.99°C
±0.05°C from -200°C...-50.01°C
otherwise 0.05%
Thermocouple
R, S ±1.0 °C +0.1%
K, J, L, N, T ±0.2 °C from 0 °C...+200 °C
±0.5 °C to 1000 °C
±1.0°C remaining range
Humidity ±1.5%rH
Flow 1% of end value
Resistance 0.5%
Memory appr. 6,000 measurements
Resolution 0.0 1°C from -200 °C...+200 °C,
otherwise 0.1°C,
respectively 0.1%
Ex-mark –––
Battery life appr. 20 hours
Connectors DIN 8-pole
Allowable
operating temp. 0 °C ... +40 °C
Display 2-line LCD
Housing plastic
Dimensions 200 x 93 x 44 mm (LxWxH)
Weight 350 g
Power supply 9 V battery
22
P770-LOG (2-channel)
Inputs 1/2 Pt100,
thermocouple:
type K, J, L, N, R, S, T,
humidity, flow
Measuring range
Pt100 -200...+850 °C
Thermocouple according DIN (-200...1760°C)
Resistance –––
Humidity 0 %...100 %rH
Flow 0 ... 40 m/s
Accuracy
Pt100 ±0.1 °C from -100 °C...+200 °C
otherwise 0.1%
Thermocouple
R, S ±1.0 °C +0.1%
K, J, L, N, T ±0.2 °C from 0 °C...+200 °C
±0.5 °C to 1000 °C
±1.0°C remaining range
Humidity ±1.5%rH
Flow 1% of end value
Resistance –––
Memory appr. 6,000 measurements
Resolution 0.1°C, 0.1% and 0.1 m/s
Ex-mark –––
Battery life appr. 20 hours
Connectors DIN 8-pole
Allowable
operating temp. 0 °C ... +40 °C
Display 2-line LCD
Housing plastic
Dimensions 200 x 93 x 44 mm (LxWxH)
Weight 350 g
Power supply 9 V battery
23
P700
Measuring value 1 + 2 recognize autom. FC (hex)
alternatively ü (ASCII)
Enabling the keyboard 0 (hex)
Read version number of firmware 6E (hex)
alternatively n (ASCII)
Read memory (only LOG-instruments) 6C (hex)
alternatively l (ASCII)
Device serial number S (ASCII)
Interface parameter:
Baud rate 2400 baud
Data bit 8
Stop bit 2
Parity None
Attention: By sending the command FC (hex) you
will get the complete data, the instrument lock automatically the keyboard. To release the keyboard you
have to send the command 0 (hex).
The datas would be sent in the following format.
Data Type = String
The length of the string depends on the instrument
(a two-channel or one-channel instrument).
For PC communication with the P700 series via the
USB interface, it is necessary to use a driver (VCP Virtual Com Port).
The required driver can be found on the optional “DEGraph” software for P700-series (order code 5090-
0081). It is also possible to download the driver from
the Internet at: www.ftdichip.com.
Depending which PC operating system Used (Windows7, XP etc.), there are different driver versions to
select.
5. Interface protocol
24
6. Connector layout
Connector layout Pt100 4-wire
Measuring channel 1 /2
Pt100 4-Wire
Soldering
Side
Connector layout thermocouple
Measuring channel 1 /2
Pt100 2-Wire
In the plug
NiCr-Ni thermocouple
International colours of thermocouples
Thermocouple DIN 43 722 DIN 43 710 ANSI MC 96.1
Type R orange white green
Pt13Rh-Pt + orange – white + red - white + black - red
Type S orange white green
Pt10Rh-Pt + orange – white + red - white + black - red
Type J black black
Fe-CuNi + black - white + white - red
Type T brown blue
Cu-CuNi + brown - white + blue - red
Type K green ....green yellow
NiCr-Ni + green - white + red - green + yellow - red
Type N rosa
NiCrSi-NiSi + pink - white
Type L brown
Fe-CuNi + red - blue
Soldering
Side
Connector layout of a probe for flow Mini Air6 (series P750/P755/770)
Measuring channel 1 /2
25
Soldering
Side
Pt100 2-Wire
In the plug
midget thermocouple connector
gn (ws)
rt (gn)
cable length 12 cm
Mini Air6 Impeller
Soldering
Side
black whiteyellow
Adaptor DIN Connector for Thermocouples Socket (series P700)
Measuring channel 1 /2
26
Our quality-probes are the main reason for the precision and quality of your measuring. To facilitate the
exchange of a probe without a loss of precision, our
probes were measured in our company and added with
a code that describes the characteristic line of the
probe. The code is attached well visible on a label on
the probe.
If you change the probe you have to enter the code into
the measuring instrument. In order to avoid any problems later on (esp. if the probe is installed somewhere
hard accessible, or if there are several of those external probes in use), we recommend to note down the
two values:
Art.No.:
Appellation:
Serial number:
Calibration data:
Art.No.:
Appellation:
Serial number:
Calibration data:
Art.No.:
Appellation:
Serial number:
Calibration data:
Art.No.:
Appellation:
Serial number:
Calibration data:
Art.No.:
Appellation:
Serial number:
Calibration data:
7. Data of probe-calibration
27
With regular use guarantee lasts 12 months for the
instruments and 6 months for the probes and sensors.
Opening of the instruments leads to expiration of
guarantee.
The producer guarantees that his product will not have
any material defect or defect in workmanship during the
above-mentioned period if the product is accordingly
used and maintained. Exceptions are defined in the
following way:
The guarantee does not apply for batteries and fuses.
The guarantee does not enclose products that are damaged, used improperly or negligent, practised or stored
improper.
These guarantee conditions replace all possible
expressly or tacitly confirmations. No liability will be
assumed for special, casual or constructive damages
when it occurs through unauthorized act or through
another way even if it is within the contract.
8. Guarantee
Dostmann electronic GmbH
Waldenbergweg 3b · D-97877 Wertheim
No part of this manual may be reproduced without
written consent of Dostmann electronic GmbH. The
technical data are correct at the time of going to print
and may change without prior notice.
03/15 • © DOSTMANN electronic GmbH
Loading...