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Testo 521-526 series multifunction meter with built-in micromanometer

Testo 521-526 Series Micromanometers
Multifunction Meters


Testo 521 series multifunction meter with built-in micromanometer
The Testo 521
multifunction meter with the built-in micromanometer is configured for differential pressure measurements in the HVAC range of 0 to 40" wg (0-100 hPa), e.g. pressure drops across filters or inspection of fans or extraction equipment. The meter has nine user selectable display pressure units: in H2O, mbar, hPa, bar, Pa, kPa, mmH2O, torr and psi. Flexibility is enhanced as additional probes can be connected to testo 521/526 pressure meters via 2 user defined probe sockets.

Pitot tube measurement: Flow velocities of 985 – 20,000 ft/min (5 - 100 m/s) are measured via the internal pressure sensor. The external 0.4 in H2O (100 Pa) probe allows precise measurements in the 200 – 2,400 ft/min (1 - 12 m/s). The advantages during flow measurement are direct calculation of the flow velocity and volume flow, averaging by points and time and automatic tightness compensation.

 

The Testo 526 series multifunction pressure meters have a range from 0 to 80" H2O (0 to 2000 hPa) and are designed for industrial applications, where critical processes require measurement and monitoring with accuracy up to 0.05 % of full scale value.

Pressure test: The integrated test menu on the Testo 526series manometers permits seamless recording, particularly for leak tests in containers. The data can be subsequently processed using software or printed out via the printer so that the pressure test is documented. The Testo Comsoft3 easy to use software contains data base, analysis, trend, and chart functions.

Advantages of the 521

  • Two probe sockets for connecting additional probes for measuring pressure, temperature, current and voltage
  • Dynamic pressure measurement at a measuring frequency of 0.04 seconds to once every 24 hours, user selectable
  • Calculation of flow velocity and volume flow via pitot tube
  • Transmitter signal with a 0/4...20 mA interface
  • Available in 2 accuracy classes: 0.2 % and 0.1 % of full scale value
Additional Advantages of the 526 Micromanometer
  • Verification of pressure drop in tanks, pipes etc. via the integrated test menu
  • Measurement of leakage rate (time-dependent pressure drop)

  • Available in 2 accuracy classes: 0.1 % and 0.05 % of full scale value

 

testo 526 PDM Accessories

Model #
Description
0560 5210 Testo 521-1 Differential pressure meter 0 to 40 in H2O (100 hPa) including battery and calibration certificate. Accuracy ±0.2% full scale
0560 5211 Testo 521-2 Differential pressure meter 0 to 40 in H2O, (100 hPa) including battery and calibration certificate. Accuracy ±0.1% full scale
0560 5280 Testo 526-1 Differential pressure meter 0 to 800 in H2O (0 to 2000 hPa) including quick-release coupling, battery and calibration certificate. Accuracy ±0.1% full scale
0560 5281 Testo 526-2 Differential pressure meter 0 to 800 in H2O (0-2000 hPa) including quick-release coupling, battery and calibration certificate. Accuracy ±0.05% full scale
0554 0545 Testo IR printer, 1 roll of thermal paper, 4 AA size batteries
0409 0178 RS-232 Computer Interface Cable
0554 0830 Comsoft3 Software used by all datalogging instruments
0516 0446 TopSafe protective case
0604 0493 Temp - Immersion-penetration probe (-330 to 1112° F)
0610 9714 Temp - Air and gas probe with fixed cable
0600 4593 Temp - Pipe wrap probe (up to 2" diameter) flow temp measurement
0554 0007 Current/voltage cable (±1 V, ±10 V, ±20 mA) with fixed cable
0554 0528 4-20 mA interface
0638 1847 Absolute pressure probe interface 0 – 800 in H2O (0-2000 hPa)
0430 0143 * Probes requiring cables – standard 5’ cable
0430 0145 * Probes requiring cables – longer 16’ cable
0638 1347 Differential pressure probe, 0 – 0.4 in H2O (0-100 Pa)
0638 1447 Differential pressure probe, 0 – 4 in H2O (0-10 hPa)
0638 1547 Differential pressure probe, 0 – 40 in H2O (0-100 hPa)
0638 1647 Differential pressure probe, 0 – 400 in H2O (0-1000 hPa)
0638 1747 Differential pressure probe, 0 – 800 in H2O (0-2000 hPa)
0409 0202 **Cable, 2.5 m for probes 0638 1347/1447/1547/1647/1747
0635 2145 Pitot tube 14" long stainless steel (350 mm)
0635 2045 Pitot tube 20" long stainless steel (500 mm)
0554 0440 Silicone Hose
0554 0441 Connecting hose set
0515 0025 9v rechargeable batteries
0554 0088 120V AC power supply/battery charger
0516 0527 Transport case
0516 0526 System case
   

testo 526 PDM Technical Data

 
521-1
521-2
526-1
526-2
Pressure Sensor Type Piezoresistive pressure sensor Piezoresistive pressure sensor
Measuring Range 0 to 40 in H2O

0 to 100 hPa

0 to 800 in H2O

0 to 2000 hPa

Overload 120 in H2O (300 hPa) 1,200 in H2O (3000 hPa)
Static Pressure 800 in H2O (2000 hPa) 800 in H2O (2000 hPa)
Accuracy ±1 digit ±0.2% full scale ±0.1% full scale ±0.1% full scale ±0.05% full scale
Resolution ±0.0004 in H2O (±0.0010 hPa) ±0.004 in H2O 
(±0.01 hPa (0.0 to 1000.0 hPa))
±0.04 in H2O 
(±0.1 hPa  (1000.0 to 2000.0 hPa))
Dimensions 8.6" x 2.7" x 2" (219.0 x 68.0 x 50.0 mm) 9" x 2.7" x 2" (229.0 x 68.0 x 50.0 mm)
Weight 10.58 Oz (300g) 11.36 oz (322g)
 
 
521-526 Manometer - Common Data
Sensor Type Piezoresistive pressure sensor for external pressure probes Ceramic sensor for external pressure probes NTC / Thermistor Probes
Measuring Range 0 to 800 in H2O
0 to 2000 hPa
-33.5 to 13,382 in H2O (-1 to 400 bar) -40 to 302°F
-40 to +150° C
Accuracy ±0.1% of reading ±0.2% of reading ±0.2°C (-10 to 50°C)
±0.4°C (rem. meas. range)

0.1°C
Resolution 0.1 Pa (0638 1347)
0.001 hPa (0638 1447)

0.01 hPa (0638 1547)

0.1 hPa (0638 1647; 0638 1747; 0638 1847)
±4.0 in H2O
(±0.01 bar)
0.1° F
0.1° C
Sensor Type Type K (NiCr-Ni) Volt measurement
(0554 0007)
Current Measurement
(0554 0007)
Current Measurement
(0554 0528)
Range -328 to 2498°F
-200.0 ... 1370.0°C
0 to 10 volt 0 to 20 mA 0 to 20 mA
Accuracy ±1.0 °C (-200.0 to -100.0 °C)
±0.4 °C (-100.0 to 200.0 °C)

±1.0 °C (200.0 to 1370.0 °C)
± 0.01 V ±0.01 mA See sensor data
Resolution 0.1°F
0.1°C
0.01 V 0.01 mA 0.01 mA
Operating Temp (compensated) 0.0...50.0 °C
Storage Temp -20.0...70.0 °C
Battery Type 9 volt (6LR61)
Battery Life In permanent operation with internal pressure sensor:
AlMN rechargeable battery: 30 hours

NiMH: 10 hours

Zinc Carbon: 18 hours
Miscellaneous AC connection & battery charging connection built into the instrument
Housing ABS Connections Hose: Ø internal 4 mm
Ø external 6 mm
Display LCD Display with symbol, 7-segment display and dot matrix
Refresh Rate 2x per second, for quick measurements 4x per sec.
Memory 100 KB - corresponds to approx 25,000 measurements
PC RS232 Interface
Warranty 2 years
 

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    Prairieville, LA  70769 
1-800-337-6291  
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    Fax: 225-673-6725
 

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