Pressure

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17

485

Order.No.: 00 .04850. 000 ???

Precision Barometer with carefully aged and temperature compensated diaphragm.
Liquid thermometer mounted on the dull metallic scale. Pressure trends can be recog-
nized by adjusting the movable marker to coincide with the current value.

Accessories:

factory calibration certificate and lined black leather case.

Technical data
Measuring ranges:

see below (other ranges available at extra cost);
thermometer: -10 to +50 °C; division 1 K

Accuracy:

±1 % of full scale

Dimensions:

131 mm Ø; 56 mm D

Weight:

0.9 kg (inclusive case)

Finish:

black lacquered

Article

Measuring range

For altitudes

Division Order.No.

485 B 985

920 to 1050 hPa

0 to 500 m

0.5 hPa 00 .04850. 000 985

485 B 915

850 to 980 hPa

500 to 1000 m

0.5 hPa 00 .04850. 000 915

485 B 865

800 to 930 hPa

1000 to 1600 m

0.5 hPa 00 .04850. 000 865

604

Order.No.: 00 .06040. 100 000

Mercury Barometer, Lambrecht type. Scale support with adjustable scale and ver-
nier on a cast aluminium base plate; plumbline for the vertical alignment and at-
tached thermometer. The instrument is delivered completely ready-to-work.

Accessories:

1 reading magnifier.

Technical data:
Measuring ranges:

840 to 1050 hPa; division 1 hPa (for up to 1200 m altitude);
on request: 630 to 790 mm Hg; division 1 mm Hg

Thermometer:

-15 to +50 °C; division 1 K

Accuracy:

±0.25 hPa (±0.2 mm Hg);

vernier scale giving readings to 0.1 hPa (or 0.1 mm Hg)

Size:

1030x105x75 mm (HxWxD),

Weight:

5.5 kg

Finish:

azure-blue (RAL 5009)

604 officially calibrated

Order.No.: 00 .06040. 100 002

Mercury Barometer, Lambrecht type. Same as model 604, except: delivered with
official calibration certificate.

607

Order.No.: 00 .06070. 100 000

Mercury Baro-Vacuum Gauge, determines the external atmospheric pressure as
well as the vacuum within a closed measuring chamber. The zero-adjustment pointer
can be moved on a sliding rail; the vernier scale is moved manually through a smooth
rack-and-pinion drive. Vertical alignment is adjusted by the attached plumbline.

Accessories:

reading magnifier and thermometer.

Technical data:
Measuring ranges...
...Barometer:

840 to 1040 h Pa (~ 0 to 1200 m altitude)

Accuracy:

±0.25 hPa

...Vacuum gauge:

100 to 30 % vacuum; 0 to 700 hPa

Accuracy:

±0.1 % vacuum; ±0.5 hPa

...Thermometer:

-15 to +50 °C; division 1 K

Dimensions:

1030x135x85 mm (HxWxD)

Weight:

7.1 kg

Finish:

azure-blue (RAL 5009)

606

Order.No.: 00 .06060. 000 000

Dehydrator, highly recommended if there is a risk of arising condense water within
the connection tube of model 607.

485

604

607

Pressure

18

Wilh. Lambrecht GmbH • Friedländer Weg 65-67 • D-37085 Göttingen

610

Order.No.: 00 .06100. 100 000

Mercury Station Barometer, Kew type. Constructed according to the DWD. Fixed zero
(no adjustment necessary). The reduced scale compensates level differences in the
lower mercury tank. With protective tube, engraved dull metallic scale, protected by a
glass tube and bottom-attached thermometer .

Accessories:

wall hook, stopping lever, transport screw, wrench and
magnifying glass.

Technical data:
Measuring ranges:

800 to 1080 hPa; division 1hPa (for up to 1500 m altitude);
on request: 600 to 810 mm Hg; division 1 mm Hg

Thermometer:

-15 to +50 °C; division 1 K

Accuracy:

±0.4 hPa (±0.3 mm Hg);
vernier scale giving readings to 0.1 hPa (0.1 mm Hg)

Dimensions:

65 mm max. Ø; 950 mm H

Weight:

3.2 kg

Finish:

azure-blue (RAL 5009)

610 officially calibrated

Order. No.: 00 .06100. 100 002

Mercury Station Barometer, same as model 610, except: delivered with official cali-
bration certificate (available in hPa-graduation only).

610 c

Order.No.: 00 .06103. 000 000

Illumination Device for model 610.

Technical data:
Operating voltage:

220 V AC

Dimensions:

70x330x50 mm (WxHxD)

Weight:

1 kg

Barometers for Electrical Telemetry

812 B

Order.No.: 00 .08120. ??? 010

Aneroid Barometer with 6 carefully aged aneroid diaphragms and resistance trans-
mitter. The overload-protected measuring system has a temperature compensation,
allowing transport up to 4000 m altitude.

Technical data:
Accuracy:

±1.5 % of full scale

Operating temp. range: -10 to +50 °C
Output:

0 to 100 Ohm, linear

Maximum current:

60 mA (~ 0.5 W)

Dimensions:

160x160x90 mm (WxHxD)

Weight:

4.5 kg

Finish:

white

Please select your required measuring range:
Article

Measuring range

according altitudes

Order.No.

812 B 1000

945 to 1055 hPa

220 to 0 m

00 .08120. 100 010

812 B 970

915 to 1025 hPa

450 to 220 m

00 .08120. 097 010

812 B 950

895 to 1005 hPa

690 to 450 m

00 .08120. 095 010

812 B 920

865 to 975 hPa

930 to 690 m

00 .08120. 092 010

812, with protection roof

610

Pressure

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19

812 MU

Order.No.: 00 .08120. ??? 6?2

Aneroid Barometer, same as model 812 B, except: built-in R-I-transducer.

Technical data:
Output:

0 to 20 mA, linear

last Order.No.: 602

or 4 to 20 mA, linear

last Order.No.: 642

max. load 500 ohm

Operating voltage:

24 V DC, ±10 %

Weight:

4.6 kg

Please select your required measuring range:
Article

Measuring range

acc. altitudes

Order.No.

mA

hPa

m

812 B 1000 MU

0 to 20

945 to 1055

220 to 0

00 .08120. 100 602

0 to 4

945 to 1055

220 to 0

00 .08120. 100 642

812 B 970 MU

0 to 20

915 to 1025

450 to 220

00 .08120. 097 602

4 to 20

915 to 1025

450 to 220

00 .08120. 097 642

812 B 950 MU

0 to 20

895 to 1005

690 to 450

00 .08120. 095 602

4 to 20

895 to 1005

690 to 450

00 .08120. 095 642

812 B 920 MU

0 to 20

865 to 975

930 to 690

00 .08120. 092 602

4 to 20

865 to 975

930 to 690

00 .08120. 092 642

8128

Order.No.: 00 .08128. 0?3 072

Sensor for air pressure.
Das kapazitive Meßelement nutzt die Eigenschaften des monokristalinen Siliziums.
Die Kapazität besteht im wesentlichen aus einer stabilen Trägersubstanz und einer
druckempfindlichen Siliziummembran, die bei Druckänderungen sehr genau definierten
und hysteresefreien Verformungen unterliegt. Die hieraus folgenden
Kapazitätsänderungen werden von der Elektronik präzise ermittelt und ausgewertet.
Zubehör:

Schutzgehäuse aus Aluminium

Technical data:
Please select between...

Order.No.

Measuring range:

800...1060 hPa (Typ A)

00 .08128. 093 072

600...1060 hPa (Typ B)

00 .08128. 083 072

Temp.operating range: -40...+60 °C
Humidity range:

not-condensing

Dependence on temperature...
at 1000 hPa:

less then ±0,01 hPa / °C

at

800 hPa:

less then ±0,05 hPa / °C

at

600 hPa:

less then ±0,08 hPa / °C

Long-term stability

±0,1 hPa / year

General
Output voltage:

0...5 V DC

Power supply:

10...30 V DC

Current consumption:

< 4 mA
< 1µA in sleep mode

Load resistor:

>10 kOhm

Load capacity:

< 47nF

Response time:

300 ms up to the full accuracy after the change of the
pressure

Min. allowed pressure:

0 hPa

Max. allowed pressure: 2000 hPa absolute
Housing:

Alu diecasting

Weight:

0,600 kg

Accessories

812 S

Order.No.: 00 .08123. 000 000

Protection Roof against rain and solar radiation. Suiting sensors 812 B and 812 MU.

Technical data:
Dimensions:

260x270x200 mm (WxHxD)

Weight:

2.3 kg

Finish:

white

8128

Pressure

20

Wilh. Lambrecht GmbH • Friedländer Weg 65-67 • D-37085 Göttingen

Low Pressure Gauges

General Notes

The liquid and diaphragm low pressure gauges described hereafter can be used to
determine underpressure, overpressure and differential pressure. In combination with
our Pitot Tubes, they work as differential pressure gauges for the measurement of
quantity and velocity of flowing gases.

654 M 16

Order.No.: 00 .06540. 160 000

Swing Tube Manometer, portable instrument with 4 measuring ranges (selected by
changing the tube inclination). With circular spirit level for the rough, and tubular spirit
level for the precise levelling; pivoted storage tank for zero adjustment.

Accessories:

100 cm

3

sealing liquid (r = 0.8 g/cm

3

), 3 supporting plates,

factory calibration certificate.

Technical data:
Scale range:

0 to 1600; divided to groups of 10

Accuracy:

±0.8 divisions

Inclinations:

1:2, 1:5, 1:10, 1:25

Pressure:

max. ±50 kPa static (~ 5000 mm of water column)

Dimensions:

390x147x22 mm (LxHxW)

Weight:

1.9 kg

Finish:

azure-blue (RAL 5009); black anodized inclination plate

Inclination sin

a

Measuring range

Scale values

1:2

0 to 800 Pa

5

1:5

0 to 320 Pa

2

1:10

0 to 160 Pa

1

1:25

0 to 64 Pa

0.4

654 T

Order.No.: 50 .06540. 003 000

Wooden Carrying Case for model 654 M 16.

Technical data:
Dimensions:

425x120x170 mm (LxWxH)

Weight:

2.5 kg

655 M 16

Order.No.: 00 .06550. 160 000

Micromanometer, stationary instrument with 5 measuring ranges (selectable by chang-
ing the tube inclination). With 2 tubular spirit levels, pivoted storage tank for zero ad-
justment, liquid trap in the minus pipe and switch on the storage vessel. Sturdy casted
base plate with three-point setup; nickel-plated components.

Accessories:

250 cm³ sealing liquid (r = 0.8 g/cm³), 3 supporting plates,
factory calibration certificate, wooden case.

Technical data:
Scale range:

0 to 1600; divided to groups of 10

Accuracy:

±0.4 divisions

Inclinations:

1:1, 1:2, 1:5, 1:10, 1:25

Pressure:

max. ±100 kPa static (~ 10 000 mm of water column)

Dimensions:

case 455x180x195 mm (LxWxH)

Weight:

instrument 2.7 kg; case 3 kg

Finish:

azure-blue base plate (RAL 5009)

Inclination sin

a

Measuring range

Scale values

1:1

0 to 1600 Pa

10

1:2

0 to 800 Pa

5

1:5

0 to 320 Pa

2

1:10

0 to 160 Pa

1

1:25

0 to 64 Pa

0.4

654

655

Pressure

Telephone ++49 / 551 / 49 58-0 • Fax ++49 / 551 / 49 58-312 • email [e-mail]

21

671 M

Order.No.: 00 .06710. 015 000

Low Pressure Gauge, diaphragm type. In overload-protected pressure-tight plastic
case for switchboard mounting. Connection via two pipe inlets on the back; with zero-
adjusting screw (accessible from the front).

Technical data:
Measuring ranges:

0 to 1500 Pa (other ranges on request)

Accuracy:

±1.5 % of full scale

Static pressure:

max. 50 kPa (~ 5000 mm of water column)

Dimensions:

103 mm flange Ø; 70 mm scale Ø;70 mm mounting depth

Weight:

0.300 kg

Finish:

black

Important Note

If not otherwise particularly requested, the diaphragm low pressure gauges are ad-
justed with a vertical scale. An overload by more than 10% usually results in a lasting
deformation of the measuring element.
The following non-standard types can be supplied at extra cost:
•

other pressure units (for instance mm of water column, mm Hg, hPa)

•

zero point at the right bottom of the scale

•

zero point at any point of the scale

•

scale division in velocity units (for instance m/s, m/h, miles/h)

•

scale division in quantity units (for instance m³/s, m³/h)

•

double division.

Sealing Liquid

Order.No.: 32 .06550. 013 000

Density: 0.8 g/cm³; amount: 250 cm³. For models 654 M16 and 655 M16.

671

Pressure

22

Wilh. Lambrecht GmbH • Friedländer Weg 65-67 • D-37085 Göttingen

628 …631

Pitot Tubes (Prandtl Type)

All Pitot Tubes are manufactured of nickel-plated brass and feature two connectors
(static pressure and overall pressure). Their regular maximum operating temperature
is 300 °C. For the connection between Pitot tube and indicator, we recommend the
following hoses: PVC and rubber (resistant up to 60 °C) or silicone-caoutchouc (resis-
tant up to 200 °C as well as temperature peaks of 300 °C).
Hose dimensions:

5 mm inside Ø, 8 mm outside Ø (both types).

628

Order.No.: 00 .06280. 025 000

Technical data:
Dimensions:

1 mm orifice; 3 mm outside Ø; 250 mm long

Weight:

0.020 kg

630

Order.No.: 00 .06300. 025 000

Technical data:
Dimensions:

3 mm orifice; 10 mm outside Ø; 250 mm long

Weight:

0.200 kg

630 a

Order.No.: 00 .06300. 050 000

Identical with model 630, except: 500 mm long; weight 0.250 kg.

630 b

Order.No.: 00 .06300. 075 000

Identical with model 630, except: 750 mm long; weight 0.300 kg.

631 c

Order.No.: 00 .06310. 100 000

Technical data:
Dimensions:

5 mm orifice, 17mm outside Ø; 1000 mm long

Weight:

0.700 kg

628 G

Order.No.: 00 .06286. 000 000

630 G

Order.No.: 00 .06306. 000 000

631 G

Order.No.: 00 .06316. 000 000

Screw Necks, for the stationary mounting of Pitot Tubes. In case of deep immersion
and high airflow velocity, Pitot Tubes require this additional support.
Please specify your Pitot Tube-model when ordering!

Pitot tubes are available in VA steel
(material 1.4571).
This versions are usable for tem-
peratures up to 600 °C and for
peaks of 700 °C.