W HLER DM 602 Digital Manometer User Manual
- June 15, 2024
- W HLER
Table of Contents
W HLER DM 602 Digital Manometer
General Information
Start-up when delivered with optional battery pack
If your unit is operated with a rechargeable battery and not with batteries (optional), the transport lock is set during delivery so that the unit cannot be switched on.
- In this case, open the battery compartment on the back of the unit.
- Move the small black lever at the bottom of the battery module from the off position to the on position.
This procedure is only necessary before using the unit for the first time.
Note s
This operation manual allows you to safely work with the Wöhler DM 602. Please
keep this manual for your information.
The Wöhler DM 602 Pressure Gauge should be employed by professionals for its
intended use only.
Liability is void for any damages caused by not following this manual.
WARNING: Not following this warning can cause injury or death.
ATTENTION: Not following this note can cause permanent damage to the
device.
NOTE: Useful information
Intended Use
The Wöhler DM 602 is used for differential pres-sure and temperature
measurements. In particular, it can be used to set the gas pres-sure on gas
fireplaces, to measure the fan differ-ential pressure and to measure the
chimney draught.
Basic equipment
| Unit | Scope of supply |
|---|---|
| Wöhler DM 602 | Wöhler DM 602 Pressure Gauge |
2 batteries 1,5 V
| Hand strap
| Measuring Hose 1,5 m
Hand strap
If you want to use the hand strap included in the delivery, mount it as
follows:
- Remove the battery cover on the back of the unit.
- Hang the loop on the small hook below the batteries.
- Close the battery cover.
Information on disposal
Electronic equipment does not belong to domestic waste but must be disposed of
by the applicable statutory provisions.
You may hand in any defective batteries taken out of the unit to our company
as well as to recycling places of public disposal systems or to selling points
of new batteries or storage batteries.
Manufacturer
Wöhler Technik GmbH
- Wöhler-Platz 1
- 33181 Bad Wünnenberg
- Tel.: +49 2953 73-100
- E-Mail: info@woehler.de
Specifications
Measured values
Differential Pressure
| Description | Data |
|---|---|
| Default unit | Pa, mbar or in WC, |
depending on the device version
Range| ± 3.000 hPa
Permissible overload| ± 3.200 hPa
Precision| < 3 % of reading,
when < ± 2 hPa
better than ± 0,06 hPa
Resolution| 0,01 hPa
when –210 hPa to
+210 hPa,
otherwise 0,1 hPa
Internal Temperature Measurement
| Description | Data |
|---|---|
| Default unit | Pa, mbar or in WC, |
depending on the device version
Range| ± 3.000 hPa
Permissible overload| ± 3.200 hPa
Precision| < 3 % of reading,
when < ± 2 hPa
better than ± 0,06 hPa
Resolution| 0,01 hPa
when –210 hPa to
+210 hPa,
otherwise 0,1 hPa
External Temperature Measurement (e.g. with temperature measuring clamp )
| Description | Data |
|---|---|
| Default unit | Pa, mbar or inWC, |
depending on device version
Range| ± 3.000 hPa
Permissible overload| ± 3.200 hPa
Precision| < 3 % of reading,
when < ± 2 hPa
better than ± 0,06 hPa
Resolution| 0,01 hPa
when –210 hPa to
+210 hPa,
otherwise 0,1 hPa
Technical Data
| Description | Data |
|---|---|
| Power Supply | 2 batteries 1,5 V, AA LR6 |
| Power supply (option) | Lithium polymer battery 3,7 V, 700 mAh, Charging via |
USB-C cable
Battery Charging Cycles (option)| After 500 charging cycles, at least 70 % of
the capacity is still available.
Battery charging time (option)| 4 h
Operating time of the rechargeable battery (option)| 38 h
Auto Off Function| After 1 hour (can be deactivated in the settings)
Storage Temperature| -20 °C to + 50 °C
Operating Temperature| +5 °C to 40 °C for compliance with the accuracies
Weight| 140 g
Dimension| 170 x 47 x 29 mm
Component explanation
| Button (1) | Press Button | Funktionen |
|---|---|---|
| __ | 3 seconds | on/off |
__
Measuring mode
| briefly| Zero the pressure sensor
double click| print measuring data on thermoprinter
__
Settings mode
| briefly| select unit/solution / display lighting
double click| confirm setting
Number| Function
---|---
1| Button
2| USB-C- charging port (option, only with rechargeable battery)
3| Display
4 Pressure socket (right)| Main socket for differential pressure measurement
(positive)
5 Pressure socket (left)| Reference socket for differential pressure
measurement (negative)
6| Jack for external temperature probe or clamp NiCr-Ni (Type K)
7| Battery compartment on the backside of the unit
8| IR Port (Thermoprinter)
Temperature measurement connection:
For external temperature measurement, any type K thermocouple can be
connected, e.g. a temperature clamp or a temperature probe.
- Insert the temperature plug into the temperature socket on the underside of the unit (Abb. 3, part 6).
Switch on unit
WARNING: Due to the compressibility of gases, the accident prevention regulations “Working on Gas Installations” and the rules and regulations “Technical Rules for Gas Installations” must be observed for all pressure tests with air or inert gas for safety reasons.
- Switch on the unit: Press and hold the button for 2 seconds.
- Switch off the unit: Press and hold the button for 3 seconds.
After switching it on, the overall display lights up briefly, and then the
start screen lights up for approx. 7 seconds.
During this time, the unit carries out a pressure zeroing.
ATTENTION: During zeroing, no hose may be connected or no differential
pressure applied, as the unit stabilizes and determines its zero point
After zeroing the measuring display appears
Display
In measuring mode, the main display shows the currently measured pressure value and below the temperature value.
Top line:
Battery level indicator:
- 3 dashes : high battery voltage
- Flashing: very low battery voltage
Middle line:
Actual measured differential pressure
Bottom line:
- Internally measured temperature or externally measured temperature (with connected temperature sensor or clamp)
- The differential pressure is always shown in the display without (+) or (-).
- Instead, there is a plus sign (+) under the pressure port through which the higher value is measured and a minus sign (-) under the pressure port with the lower value.
Note: We recommend connecting the overpressure or underpressure to be measured to the right-hand con-nection and to leave the left-hand connection open as a reference connection
Temperature measurement connection:
For external temperature measurement, any type K thermocouple can be
connected, e.g. a temperature clamp or a temperature probe.
- Insert the temperature plug into the temperature socket on the underside of the unit.
Settings
- Immediately after switching on, as soon as the battery symbol has appeared in the display and before the measured value display appears, double-click with the button.
Selecting the pressure unit
This will take you to the setting mode.
The pressure units bar, bar, WC, psi, mmH2O, mH2O, Pa, hPa, kPa, and mPa appear one after the other.
- Confirm the selected unit with a double click.
Selecting the pressure solution
The display shows „reso“ (resolution).
You can now set the displayed resolution for the pressure. The resolution
refers to the previously selected pressure unit. There are 3 different
resolutions to choose from.
- Press the button briefly to select the desired resolution.
- Confirm the selection with a double click.
Selecting the temperature unit
The display shows „Temp. unit“.
You can now select between the temperature units °C or °F.
- To change between °C and °F press the button briefly.
- Confirm the selection with a double click.
Switching the display lighting on/off
The display shows „Light on“.
- Press the button briefly to switch the display lighting on and off again.
- Confirm the selection with a double click.
Auto Off Function “Auto Off” appears in the display.
The unit switches off automatically after one hour if no key has been pressed.
This auto-off function can be deactivated at this point.
- Press the operating key briefly to switch between “Auto Off” (automatic switch-off activated) and “Ever ON” (automatic switch-off deactivated).
- Confirm your selection with a double click.
The display then switches back to the start screen for a few seconds and then to the measuring mode.
Changing the batteries
- Switch off the unit.
- Remove the battery cover from the backside of the unit.
- Replace the batteries with 2 new 1.5 V AA LR6 batteries.
- Observe the correct polarity according to the labeling in the battery compartment.
Maintenance
| Interval | Maintenance work |
|---|---|
| When necessary (user) | Clean the housing with a damp cloth and mild detergent. |
| 1x per year (factory) | Send the unit to one of our service centers for in- |
section and calibration.
Accessories
Chimney drive
Draught probe with hose and cone: Art. no. 4578
Service work on gas pipes
- Pressure Measurement Set for Wöhler Digital Manometer: Art. no. 56126
- High-pressure plug ½ “ and 1“: Art. no. 7213
- Hose set with measuring hose Ø 8 mm for measurements up to 1.5 bar : Art. no. 11341
Temperature
- Clamp temperature sensor type K K : Art. no. 62616
Printer
- Wöhler TD 100 Thermal Printer: Art. no. 4160
- Thermal Paper, 10 rolls: Art. no. 4145
Warranty and Service
Warranty
- Each Wöhler Digital Manometer DM 602 will be tested in all functions and will leave our factory only after extensive quality control testing.
- If used properly, the warranty period for the Wöh-ler DM 602 will be twelve month from the date of sale. Not covered by the warranty are batteries and defects of the pressure sensor caused by overpressure.
- Service by non-authorized personnel or making modifications to the unit voids any warranty.
Service
Wöhler has built our reputation on excellence in customer service. Therefore,
of course, we are readily available to assist you after the warranty period
ends.
- Send us the device, and we will repair it and return it to you with our package service.
- Immediate help is provided by our technical staff over the telephone.
Declaration of conformity
The manufacturer:
- WÖHLER Technik GmbH
- Wöhler-Platz 1, D-33181 Bad Wünnenberg declares that the product:
Product Name: Wöhler DM 602 Digital Manometer
complies with the key safety requirements set down in the guidelines of the
Council for the Harmonization of the Legal Requirements of the Member States
concerning the electromagnetic compatibility 2014/53/EU and 2014/30/EU.
The following standards were availed of to evaluate the product with respect of electro-magnetic compatibility:
- EN 55011:2016 + A1:2017
- EN 55032:2015
- EN 61000-4-2:2009
- EN 61000-4-3:2006 + A1:2008 + A2:2010
Bad Wünnenberg, 06.07.2022
Dr. Stephan Ester, Geschäftsführer/Managing Director
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>